Combustible Mixture Stratification Means Patents (Class 123/295)
  • Patent number: 10808601
    Abstract: An internal combustion engine includes a fuel injection nozzle provided with a nozzle hole for injecting fuel, the nozzle hole exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a hollow duct, an inlet and an outlet of which are exposed to the combustion chamber. The duct is provided in a manner allowing fuel spray injected from the nozzle hole of the fuel injection nozzle to pass through from the inlet to the outlet. The fuel injection nozzle and the duct are configured such that a part of fuel spray that is injected in pilot injection that is performed before main injection directly adheres to an inner wall surface of the duct.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: October 20, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Hashizume
  • Patent number: 10800227
    Abstract: An air-conditioning control apparatus is mounted in a vehicle that is capable of unmanned travelling. The apparatus has a determining section and an output section. The determining section determines whether an occupant is in the vehicle and whether the vehicle is traveling. The output section performs an air-conditioning control including temperature adjusting using a radiator through heat exchange with air outside the vehicle. The output section performs the air-conditioning control when the vehicle is in an unmanned state and a travelling state, and refrains from performing the air-conditioning control when the vehicle is in the unmanned state and a stop state.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 13, 2020
    Assignee: DENSO CORPORATION
    Inventor: Koji Sakai
  • Patent number: 10801393
    Abstract: A control system for a compression ignition engine configured to start compression ignition combustion by igniting mixture gas formed by injecting fuel into combustion chambers is provided, which includes combustion chambers each defined in respective cylinders so that displacements of the combustion chambers change by respective pistons reciprocating, a throttle valve, ignition plugs, injectors, a sensor having measuring parts including an atmospheric-pressure detector configured to detect an atmospheric pressure, and configured to measure parameters related to operation of the engine, and a controller. The controller executes a lean compression ignition combustion control in which compression ignition combustion is performed at a given lean air-fuel ratio higher than a stoichiometric air-fuel ratio.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Yuto Matsushima, Masayoshi Higashio, Yugou Sunagare, Shinji Takayama, Kenko Ujihara, Yuta Masuda
  • Patent number: 10801436
    Abstract: In a first region on a low load side of an operation region of a direct fuel injection engine, homogenous combustion is performed, while, in a second region of the operation region on a load side higher than the first region, stratified combustion is performed. In the stratified combustion, a fuel is dispersed in a cylinder by a first injection operation and a fuel is unevenly distributed in a vicinity of the ignition plug by a second injection operation. Shift control by the stratified combustion is executed at a time of shifting when an operation state of the engine has shifted from the first region to the second region, and in the shift control, a fuel in an amount larger than a target amount of the second injection operation in the second region is injected by the second injection operation and then, an injection amount of the second injection operation is decreased toward the target amount.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: October 13, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Masaharu Kassai, Takayoshi Kodama
  • Patent number: 10794310
    Abstract: In some examples, a system including one or more processors may receive sensor data from one or more sensors indicating one or more engine parameters of an engine including a combustion chamber. Based on the sensor data, the system may determine a homogeneity index indicative of a homogeneity of an air-fuel mixture within the combustion chamber. Furthermore, the system may determine an estimated amount of NOx in the exhaust gas based at least in part on the homogeneity index. In addition, based at least partially on the estimated amount of NOx in the exhaust gas, the system may send an instruction to control an engine component.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 6, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Zicheng Ge, Yahodeep Lonari, Kazuhiro Oryoji
  • Patent number: 10794237
    Abstract: A control device has a VVT (variable valve timing) mechanism which changes opening or closing timing of at least one of an intake valve and an exhaust valve, and includes: a processor; a sensor for detecting atmospheric pressure; and a sensor for detecting the amount of air flowing through an intake air flow path. The processor calculates a charging efficiency based on the detected amount of air, calculates a volumetric efficiency from the detected amount of air and the detected atmospheric pressure, calculates the charging efficiency valve opening timing of the intake valve based on the charging efficiency, calculates the volumetric efficiency valve opening timing of the intake valve based on the volumetric efficiency, and sets the valve opening timing(s) of at least one of the intake valve and the exhaust valve based on one of the charging efficiency valve opening timing and the volumetric efficiency valve opening timing.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: October 6, 2020
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryosuke Itano, Toshiyuki Miyata, Hitoshi Toda, Tsuyoshi Tadanaga
  • Patent number: 10781760
    Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: September 22, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Leslie Bromberg, Daniel R. Cohn, John B. Heywood
  • Patent number: 10753267
    Abstract: Embodiments of apparatus are disclosed for affecting working fluid flow in a system that delivers material between two locations by carrying the material in the working fluid. For example, embodiments of the disclosed apparatus may be used in an internal combustion engines to carry fuel droplets to a combustion area using air as the working fluid. The apparatus may include a passage including a funnel portion and tumble area that direct working fluid into a stratified stream. The stratified stream may include an outer boundary flow having a toroidal and/or helical flow characteristic and an inner flow carrying injected material that is bound by the outer flow.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: August 25, 2020
    Inventors: Elario D. Dalmas, II, Brett J. Leathers
  • Patent number: 10718257
    Abstract: A method of operating a dual-fuel combustion system includes reciprocating a piston between a bottom dead center and a top dead center of a cylinder, the piston including a piston bowl, a circumferentially extending recess located radially outside of the piston bowl, and a plurality of diverters in the recess. The method includes opening an intake valve to introduce a first fuel, and injecting, by a set of fuel injector orifices substantially aligned with the diverters, a second fuel toward the diverters. The method also includes autoigniting the second fuel to ignite the first fuel.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: July 21, 2020
    Assignee: Caterpillar Inc.
    Inventors: Jonathan W. Anders, Bobby John
  • Patent number: 10712373
    Abstract: The subject matter of this specification can be embodied in, among other things, a method for characterizing a fluid injector that includes receiving a collection of waveform data, identifying a pull locus, determining a detection threshold level value, identifying a first subset of the collection of data representative of a selected first electrical waveform of the collection of electrical waveforms, identifying an opening value, identifying a representative closing value, identifying an anchor value, identifying a second subset of the collection of data based on the collection of data, the pull locus, the first subset, and the opening value, identifying a maximum electrical value, identifying an opening locus based the collection of data, the anchor value, and the maximum electrical value, identifying a hold value, and providing characteristics associated with the fluid injector comprising the pull locus, the opening locus, the hold value, the anchor value, and the representative closing value.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 14, 2020
    Assignee: Woodward, Inc.
    Inventors: Kamran Eftekhari Shahroudi, Suraj Nair
  • Patent number: 10704523
    Abstract: A control system of a compression-ignition engine includes an intake variable mechanism and a controller. In a second operating range, the controller controls the intake variable mechanism so that, while partial compression-ignition combustion is performed under an air-fuel ratio (A/F) lean environment, an intake valve open timing takes timing at an advanced side of an exhaust TDC. In a first operating range on a lower load side, the controller controls the intake variable mechanism so that, while the partial compression-ignition combustion is performed under the A/F lean environment, under the same engine speed condition, the intake valve close timing is more retarded within a range on a retarded side of an intake BDC as the engine load decreases, and an absolute value of a change rate of the intake valve close timing to the engine load becomes larger than in the second range.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 7, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Masanari Sueoka, Atsushi Inoue, Keiji Maruyama, Takuya Ohura, Tomohiro Nishida, Yusuke Kawai, Tetsuya Chikada, Tatsuhiro Tokunaga
  • Patent number: 10704524
    Abstract: A control system of a compression-ignition engine which performs SPCCI combustion in which mixture gas is ignited with a spark plug to be partially combusted by SI combustion and the rest of mixture gas self-ignites to be combusted by CI combustion, is provided. When the engine is operated at least in a given first operating range, a controller of the device controls a variable intake mechanism so that an A/F lean environment where an air-fuel ratio in a cylinder becomes higher than a stoichiometric air-fuel ratio is formed, while causing the spark plug to perform spark ignition at a given timing so that the mixture gas combusts by SPCCI combustion, and controls so that, under the same engine load condition, an intake valve close timing is more retarded as the engine speed decreases, within a range where an amount of air inside the cylinder decreases by retarding the close timing.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: July 7, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Masanari Sueoka, Atsushi Inoue, Keiji Maruyama, Takuya Ohura, Tomohiro Nishida, Yusuke Kawai, Tetsuya Chikada, Tatsuhiro Tokunaga
  • Patent number: 10675587
    Abstract: An exhaust purification system including a NOx catalyst 32 provided in an exhaust passage of an internal combustion engine 10 and purifying NOx in exhaust; a MAF sensor 40 for acquiring an air flow-rate of the internal-combustion engine 10; a control unit 60, 70 that execute catalyst regeneration treatment of recovering a NOx purification ability of the NOx catalyst 32 by performing, in combination, air-based control of reducing air flow-rate of the internal-combustion engine 10 to a predetermined target air flow-rate and injection-based control of increasing a fuel injection amount, wherein, in a case of executing the catalyst regeneration treatment, the control unit 60, 70 starts with the air-based control and starts the injection-based control when the air flow-rate acquired by the MAF sensor 40 is reduced to the target air flow-rate.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 9, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka, Hiroyuki Yuza
  • Patent number: 10655546
    Abstract: Provided is a control device for controlling an internal combustion engine including a fuel injection valve, an ignition device, and a variable valve operating device configured to switch between a base opening/closing mode of an intake valve and a continuous valve opening mode. The control device is configured to execute a cold start control at a cold start. The cold start control includes: a startability improvement processing executed in a predetermined number of cycles after the start of cranking; and a combustion start processing executed after this predetermined number of cycles. In the startability improvement processing, the continuous valve opening mode is selected in at least an expansion stroke and an exhaust stroke, and fuel injection is executed without ignition. In the combustion start processing, the base opening/closing mode is selected continuously during one cycle, and ignition is executed.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: May 19, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shigeki Miyashita
  • Patent number: 10648409
    Abstract: A control apparatus for a compression autoignition engine includes an engine, a state quantity setting device, a spark plug, and a controller. After the spark plug ignites air-fuel mixture to start combustion, unburned air-fuel mixture is combusted by autoignition. The controller changes, according to an operation state of the engine, a heat amount ratio that represents an index associated with a ratio of an amount of heat generated by air-fuel mixture being combusted by flame propagation, to a total amount of heat generated by air-fuel mixture in the combustion chamber being combusted.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: May 12, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Patent number: 10648443
    Abstract: A control apparatus for a compression autoignition engine controls compression autoignition by ignition. The control apparatus includes an injector, a spark plug, and a controller. The controller controls the injector so that fuel is injected by a plurality of divided injections, and thereafter, outputs a control signal to the spark plug at predetermined ignition timing so that, by ignition, unburned air-fuel mixture combusts by autoignition. Control is performed so that, when load on the engine is high, an amount of fuel injected at later timing among the plurality of injections becomes larger than when the load is low.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: May 12, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Patent number: 10619580
    Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: April 14, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Leslie Bromberg, Daniel R. Cohn, John B. Heywood
  • Patent number: 10605193
    Abstract: A control system for a compression-ignition engine is provided, which includes an engine having a combustion chamber, an injector configured to supply fuel into the combustion chamber, a spark plug, a swirl valve provided to an intake passage of the engine, and a controller connected to the injector, the spark plug and the swirl valve to control them. The controller includes a processor configured to execute a swirl adjusting module to adjust an opening of the swirl valve to generate a swirl flow inside the combustion chamber, a fuel injection timing controlling module to control a fuel injection timing and control the injector to retard the fuel injection timing as an engine speed increases, and a combustion controlling module to control the spark plug to ignite at a given ignition timing after the swirl generation and the fuel injection, so that partial compression-ignition combustion is performed.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: March 31, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Masanari Sueoka, Takuya Ohura, Tatsuhiro Tokunaga, Keiji Maruyama, Tomohiro Nishida
  • Patent number: 10590874
    Abstract: Methods and systems are provided for mitigating issues related to sluggish engine performance. In one example, a method comprises, responsive to an indication of degradation of one or more cylinders in the engine, reducing carbon buildup associated with the one or more cylinders via injecting a diesel exhaust fluid into an intake manifold of the engine while the engine is combusting air and fuel. In this way, a water content of the diesel exhaust fluid may be vaporized in the one or more engine cylinders, which may effectively reduce the carbon buildup.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: March 17, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10539098
    Abstract: A control system of a compression-ignition engine is provided, which includes an engine configured to cause combustion of mixture gas inside a combustion chamber, a spark plug, and a controller configured to operate the engine. The combustion is performed in a given mode in which, after the spark plug ignites the mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller has a heat amount ratio changing module configured to change, according to an engine operating state, a heat amount ratio as an index relating to a ratio of a heat amount generated when the mixture gas combusts by flame propagation with respect to a total heat amount generated when the mixture gas inside the combustion chamber combusts. The controller causes the changing module to increase the heat amount ratio at a high engine speed than at a low engine speed.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 21, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Kota Matsumoto, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Patent number: 10533526
    Abstract: The present connection structure of an intake pipe is a connection structure of an intake pipe for an engine head. The connection structure includes a partition wall member partitioning an intake passage along its axial direction and being inserted into the engine head, and an elastic gasket having a frame shape provided between the engine head and the intake pipe to seal therebetween. The intake pipe is provided at its connection end portion with an elastic body that presses the partition wall member in its insertion direction.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 14, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Takuma Yamaguchi
  • Patent number: 10526928
    Abstract: A valve train assembly includes a rocker arm assembly, and axial shifting cam assembly, and a lost motion device. The axial shifting cam assembly is movable between a first axial position and a second axial position on a camshaft, the cam assembly having a first cam having a first lobe, and a second cam having a second lobe. The first and second lobes are configured to each selectively engage the rocker arm assembly to respectively perform a first and a second discrete valve lift event. The lost motion device is operably associated with the rocker arm assembly and configured to perform a third discrete valve lift event, distinct from the first and second valve lift events.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: January 7, 2020
    Assignee: Eaton Corporation
    Inventors: Philip William Wetzel, Douglas J. Nielsen, James E. McCarthy, Jr.
  • Patent number: 10519830
    Abstract: The invention describes a method for adjusting the pressure in a pumping system (10) of a motor vehicle with an internal combustion engine. The pumping system (10) comprises one or more pumps, wherein each pump is provided with a respective driving motor, and at least one programmable electronic control unit (12). The method comprises the steps of adjusting or mapping the programmable electronic control unit (12) of the pumping system (10), carried out by setting a set of predefined operating parameters of each pump in the programmable electronic control unit (12) of the pumping system (10), and of controlling the operation of the pumping system (10), wherein such control is an open-loop control and wherein the control action is independent from the values of the output parameters of the pumping system (10).
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: December 31, 2019
    Assignee: FLUID-O-TECH S.R.L.
    Inventors: Diego Andreis, Francesco Tirelli
  • Patent number: 10487720
    Abstract: A control system of a compression-ignition engine is provided, which includes an engine, an injector, a spark plug, and a controller connected to the injector and the spark plug, and configured to operate the engine by outputting a control signal to the injector and the spark plug. After the spark plug ignites mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller outputs the control signal to the injector to perform a first-stage injection of fuel and then a second-stage injection in which fuel is injected to at least form the mixture gas around the spark plug. The controller also outputs the control signal to the injector to control a ratio of the injection amount of the second-stage injection with respect to the injection amount of the first-stage injection to be higher at a high engine speed than at a low engine speed.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: November 26, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Kota Matsumoto, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Patent number: 10487721
    Abstract: An internal combustion engine (10), including a cylinder (15) with a cylinder wall (12) defining a combustion chamber (32), a piston (13) reciprocally disposed within the combustion chamber (32) a crankcase (16) including a crankshaft (11) rotatably disposed therein, the piston (13) being connected to the crankshaft (11) by a connecting rod (17), a first scavenger duct (3) extending between the combustion chamber (32) and the crankcase (16), the first scavenger duct (3) including a top port (31a) and a bottom port (31b), a fuel and air inlet channel (22) in fluid communication with the crankcase (16) by way of a piston ported fuel and air inlet port (23) so that the fuel and air inlet channel (22) delivers a fuel and air mixture to the crankcase (16), and an airhead channel (6) in fluid communication with the first scavenger duct (3) by way of a first piston ported air inlet port (7), characterized in that the fuel and air inlet channel (22) is in fluid communication with the airhead channel (6) so that the f
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: November 26, 2019
    Assignee: HUSQVARNA AB
    Inventors: Alexander Lundgren, Joel Berneklev, Tommy Shoug
  • Patent number: 10480438
    Abstract: Disclosed herein is a fuel injection control device for a direct injection engine including an engine body (engine 1) and a fuel injection control unit (engine controller 100). The fuel injection control unit injects a fuel in a predetermined injection mode into a combustion chamber (17) such that while the engine body is warm, an air-fuel mixture layer and a heat-insulating gas layer, surrounding the air-fuel mixture layer, are formed in the combustion chamber at a point in time when an air-fuel mixture ignites, and changes the injection mode of the fuel into the combustion chamber such that while the engine body is cold, the lower the temperature of the engine body is, the thinner the heat-insulating gas layer becomes.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: November 19, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takeshi Nagasawa, Keiji Araki, Noriyuki Ota, Kenji Uchida, Ryohei Ono, Kiyotaka Sato, Hidefumi Fujimoto
  • Patent number: 10480426
    Abstract: A method of controlling a gas engine connected to a turbocharger including a compressor and a turbine includes: performing a knocking control operation of optimizing an ignition timing as a steady operation; and in a case where a load of the gas engine increases during the steady operation, when a degree of increase in the load is relatively small, gradually increasing an actual fuel injection amount while keeping the ignition timing, and when the degree of increase in the load is relatively great, retarding the ignition timing and then gradually increasing the actual fuel injection amount.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: November 19, 2019
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tomoaki Kizuka, Yosuke Nonaka, Hiroyoshi Ishii, Satoru Fukao, Shigeharu Fujihara, Towa Hirayama
  • Patent number: 10436134
    Abstract: When it is determined that the combustion state during the catalyst warm-up control is unstable, an additional ignition is performed on the TDC side relative to the discharge period CP. In a first countermeasure example, an additional ignition period CP2 is provided on the TDC side relative to the ignition period CP1 at the normal time while performing normal ignition and injection. A second countermeasure example is carried out when it is determined that the combustion state is still unstable despite the first countermeasure example. In the second countermeasure example, an additional ignition period CP3 which is a longer period than the additional ignition period CP2 is provided instead of the additional ignition period CP2.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: October 8, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Hayashi
  • Patent number: 10408185
    Abstract: A control method for internal combustion engine includes forming an air-fuel mixture leaner than that at a stoichiometric air-fuel ratio in a cylinder by first fuel injection, performing second fuel injection to inject fuel toward the vicinity of a discharge channel of an ignition plug during a period in which the air-fuel mixture is undergoing a low temperature oxidation reaction in a compression stroke, and after the second fuel injection, performing spark ignition by the ignition plug at a timing at which a spark of the ignition plug reaches the fuel injected by the second fuel injection.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: September 10, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Masaharu Kassai, Hiroki Hashimoto
  • Patent number: 10408145
    Abstract: An EGR control device includes: a drive unit, a basic opening degree deriving unit, a measurement unit, a memory unit, a correction opening degree deriving unit and a control unit. The drive unit varies an opening degree of an EGR valve. The basic opening degree deriving unit derives a basic EGR valve opening degree based on an operating condition of an engine. The measurement unit measures a temperature in the downstream side of a position of where EGR gas is recirculated in an intake passage. In the memory unit, information acquired in advance is stored. The information indicates a relationship between the opening degree and a temperature difference. The correction opening degree deriving unit derives a correction opening degree with reference to the information. The control unit controls the drive unit such that the opening degree of the EGR valve becomes a target EGR valve opening degree by correcting the basic EGR valve opening degree with the correction opening degree.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: September 10, 2019
    Assignee: SUBARU CORPORATION
    Inventor: Hirooki Ushijima
  • Patent number: 10400705
    Abstract: An assembly at least comprising a fuel injector for dual fuel operation of an internal combustion engine. The assembly includes a nozzle holder defining a fuel circuit and provided with a nose adapted in use to be in connection with a combustion space of an internal combustion engine, and first and second nozzles in communication with the fuel circuit in the nozzle holder for directly injecting liquid fuel into the combustion space of the internal combustion engine for ignition of a combustible mixture present in the combustion space. The first and second nozzles adjacent to the nose of the nozzle holder are interconnected by a cooling channel. At each actuation of a fuel pump upstream of the first and second nozzles, substantially a full volume of fuel pumped during actuation of the fuel pump is allowed to flow through the cooling channel and via the first and second nozzles.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 3, 2019
    Inventors: Paul Johan Willem Maria Nooijen, Jaroslav Hlousek
  • Patent number: 10400706
    Abstract: Embodiments of the present invention prevent the occurrence of rapid or intense self-ignition of fuel in an internal combustion engine that performs diesel combustion using a fuel having a relatively high self-ignition temperature. Pre-combustion is brought about by spark ignition during the compression stroke. Thereafter, main injection by an in-cylinder injection valve is performed before the top dead center of the compression stroke. In consequence, combustion of the fuel injected by the main injection is started by flame generated by the pre-combustion, and self-ignition and diffusion combustion of fuel occurs subsequently. Moreover, in at least a part of the operation range of the internal combustion engine, middle injection is performed at a time after the spark ignition of the pre-injected fuel and before the main injection. The fuel injected by the middle injection is burned by propagation of flame.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: September 3, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuta Ochi
  • Patent number: 10400702
    Abstract: Methods and systems are provided for fueling an engine of a vehicle during an exit from a deceleration fuel shut-off (DFSO) condition. In one example, a method may include fueling the engine using a compression stroke direct injection during the exit from the DFSO condition to reach a first engine torque threshold, and may further include increasing a separation between the compression stroke direct injection and a spark to gradually increase the engine torque to a second, higher engine torque threshold, and thereafter transitioning engine fueling from the compression stroke direct injection to an intake stroke direct injection. In this way, torque bumps may be reduced during DFSO exit.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: September 3, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Marc G. Uphues
  • Patent number: 10401398
    Abstract: The subject matter of this specification can be embodied in, among other things, a method for characterizing a fluid injector that includes receiving a collection of waveform data, identifying a pull locus, determining a detection threshold level value, identifying a first subset of the collection of data representative of a selected first electrical waveform of the collection of electrical waveforms, identifying an opening value, identifying a representative closing value, identifying an anchor value, identifying a second subset of the collection of data based on the collection of data, the pull locus, the first subset, and the opening value, identifying a maximum electrical value, identifying an opening locus based the collection of data, the anchor value, and the maximum electrical value, identifying a hold value, and providing characteristics associated with the fluid injector comprising the pull locus, the opening locus, the hold value, the anchor value, and the representative closing value.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: September 3, 2019
    Assignee: Woodward, Inc.
    Inventors: Kamran Eftekhari Shahroudi, Suraj Nair
  • Patent number: 10393061
    Abstract: A cylinder head cooling structure includes: an intake-side cooling passage, inter-cylinder cooling passages, inter-port cooling passages, first cooling water supply passages that include an upstream end connected to a cooling water supply passage provided in a cylinder block of the engine and a downstream end which joins an upstream end of the inter-cylinder cooling passage; and blocking walls that are provided in the inter-cylinder cooling passages and extend obliquely in a direction from the exhaust ports of the cylinder on an upstream side to the intake ports of the cylinder on a downstream side to divide the inter-cylinder cooling passage.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: August 27, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Tsunaki Hayasaki
  • Patent number: 10393049
    Abstract: The control apparatus operates an engine water temperature adjustment apparatus so that the temperature of cooling water that passes through an engine head enters a first temperature region in a lean mode, and operates the engine water temperature adjustment apparatus so that the temperature of the cooling water enters a second temperature region that is lower than the first temperature region in a stoichiometric mode. When knocking is detected after switching is started from the lean mode to the stoichiometric mode, the control apparatus performs any one of a first operation to operate a variable valve apparatus so as to retard the closing timing of an intake valve, a second operation to operate an oil jet apparatus so as to increase an oil jet amount, and a third operation to operate an EGR apparatus so as to increase an EGR amount.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 27, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Hotta, Hiroyuki Tanaka
  • Patent number: 10358971
    Abstract: An object of the invention is to reduce the amount of smoke generated and to improve the stability of diesel combustion in cases where an EGR apparatus is used in an internal combustion engine that performs diesel combustion using fuel having a relatively high self-ignition temperature. A control apparatus performs first injection at a first injection time during the compression stroke, causes spray guide combustion to occur, and starts to perform second injection at such a second injection time that causes combustion of injected fuel to be started by flame generated by the spray guide combustion, thereby causing self-ignition and diffusion combustion of fuel to occur. The apparatus changes the ratio of the first injected fuel quantity to the total fuel injection quantity and the ratio of the second injected fuel quantity to the total fuel injection quantity for the same total fuel injection quantity in one combustion cycle, based on the EGR rate in the intake air.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 23, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuta Ochi, Toshimi Kashiwagura
  • Patent number: 10358993
    Abstract: When it is determined that the combustion state during the catalyst warm-up control is unstable, an additional ignition is performed on the TDC side relative to the discharge period CP. In a first countermeasure example, an additional ignition period CP2 is provided on the TDC side relative to the ignition period CP1 at the normal time while performing normal ignition and injection. A second countermeasure example is carried out when it is determined that the combustion state is still unstable despite the first countermeasure example. In the second countermeasure example, an additional ignition period CP3 which is a longer period than the additional ignition period CP2 is provided instead of the additional ignition period CP2.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: July 23, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Hayashi
  • Patent number: 10337447
    Abstract: A fuel injection control apparatus of an internal combustion engine, which can appropriately control the amount of fuel injection from an in-cylinder injection valve so as to achieve a desired air-fuel ratio, regardless of the operating state of the internal combustion engine, is provided. The fuel injection control apparatus comprises: an additional injection means which, when determining that the operating state of the internal combustion engine is a transient state, allows the in-cylinder injection valve to inject a fuel amount conformed to a changing intake air amount; and a subtraction means for subtracting a minimum fuel amount, injectable from the in-cylinder injection valve, from a fuel amount to be injected, before injection by the additional injection means is performed.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: July 2, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshiyuki Miyata, Hitoshi Toda
  • Patent number: 10309294
    Abstract: An engine includes: a piston including a cavity; a cylinder head configured so as to form a combustion chamber having a pent roof shape; a fuel injection valve configured to inject fuel from a second half of a compression stroke until a first half of an expansion stroke; and a spark plug arranged at a position corresponding to an upper side of the cavity. Injection openings which are arranged in a circumferential direction surrounding a longitudinal axis of the valve and through each of which the fuel is injected in a direction inclined relative to the longitudinal axis by a predetermined angle is formed such that when a height of a ceiling of the combustion chamber at a position corresponding to an edge end portion of the cavity in an injection direction of the injection opening is large, the injection angle of the injection opening is large.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 4, 2019
    Assignees: MAZDA MOTOR CORPORATION, DENSO CORPORATION
    Inventors: Takayuki Hikita, Masahisa Yamakawa, Tomonori Urushihara, Kazuhiro Nagatsu, Tatsuya Fujikawa, Takashi Youso, Takaaki Nagano, Yuuki Kawai, Toshifumi Hayami
  • Patent number: 10309322
    Abstract: When it is determined that the initial combustion is unstable, the engine speed is forcibly increased. When the engine speed is forcibly increased, fluidity in the cylinder increases. When the fluidity in the cylinder rises, homogeneity of the homogeneous air-fuel mixture is improved. Therefore, it is possible to enlarge the flame kernel. When the flame kernel is enlarged, the initial flame resulting from the flame kernel is also enlarged. Then, the initial flame becomes easy to involve the closest fuel spray thereby the initial combustion can be stabilized.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: June 4, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kenji Hoshi
  • Patent number: 10302028
    Abstract: Provided are a work machine, a power unit, and a diesel engine of a work machine that make it possible to reduce emitted noxious substances to levels below reference values stipulated by exhaust gas regulations in advanced countries and regions while also omitting or simplifying a post-treatment device. A hydraulic pump is driven by a diesel engine that limits maximum output torque in a low revolution speed region lower than a high revolution speed region including a rated revolution speed in such a manner that the maximum output torque has a characteristic of intermediate torque lower than torque of a maximum output horsepower point at the rated revolution speed, and a hydraulic actuator is driven by hydraulic fluid delivered from the hydraulic pump.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 28, 2019
    Assignees: Hitachi Construction Machinery Co., Ltd., Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Manabu Edamura, Yuusuke Kajita, Masatoshi Hoshino, Kouji Ishikawa, Kentarou Itoga, Naoki Ishikawa, Tsutomu Umehara
  • Patent number: 10280859
    Abstract: A control system reduces the amount of fuel injected from a second fuel injector in one cycle to an amount smaller than a second basic injection amount according to operating conditions of an internal combustion engine, and increases the amount of fuel injected from a first fuel injector in one cycle to an amount larger than a first basic injection amount according to operating conditions of the engine, during a predetermined period after a flow restricting operation is finished, so as to reduce fluctuations in the air-fuel ratio due to fluctuations in the wall temperature.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takahiro Tsukagoshi
  • Patent number: 10273922
    Abstract: An object of a control method to control a direct injection internal combustion engine that directly injects fuel in a cylinder is to reduce an increase in PN caused by attachment of the fuel to a fuel injection valve distal end. The control method cools the fuel before a fuel temperature when the fuel passes through an injection hole on a fuel injection valve reaches a temperature at which an amount of attached fuel to the fuel injection valve distal end increases.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: April 30, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro Imaoka, Takao Inoue, Takeshi Tsuyuki
  • Patent number: 10267243
    Abstract: Methods and systems are provided for learning a transport delay for individual cylinders that is associated with maldistribution of water among cylinders during a water injection event. Differences in knock intensity between individual cylinders, following a water injection, are used to identify water maldistribution. Differences in the amount and timing of an engine dilution effect following a manifold water injection are learned via an intake oxygen sensor and used to reduce cylinder-to-cylinder imbalance in water delivery.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 23, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael McQuillen, Daniel A. Makled, Mohannad Hakeem, Gopichandra Surnilla
  • Patent number: 10240491
    Abstract: A control system of an engine is provided. The control system includes an exhaust variable valve mechanism for changing an operation mode of an exhaust valve, a fuel injection controlling module for controlling a fuel injector to inject fuel at a fuel injection timing associated with an operating state of the engine, a variable valve mechanism controlling module for operating the exhaust valve via the exhaust variable valve mechanism in a first operation mode when the operating state of the engine is within a compression self-ignition range, and in a second operation mode when the operating state of the engine is within a spark-ignition range, and a first in-cylinder state quantity estimating module for estimating a first state quantity inside the cylinder relating to a burned gas amount within the cylinder.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 26, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Shuhei Shintani, Takuji Okumura, Hiroaki Horiuchi, Shigeru Nakagawa
  • Patent number: 10227945
    Abstract: An optimized port plus direct injection (PFI+DI) fueling system for reducing DI-generated particulates from a spark ignition gasoline engine is disclosed. It uses information from a computational model that includes piston wetting. Means for DI particulate reduction include control of DI timing and duration as a function of various parameters. Illustrative computational results for decreasing particulates in various drive cycles are presented. These calculations illustrate large potential particulate reductions (e.g. 95%) that can be obtained relative to DI operation alone. The optimized PFI+DI system could provide DI generated particulate reduction, efficiency and cost advantages relative to operation of a DI alone engine with a gasoline particulate filter (GPF). Alternatively, it could be used in combination with a GPF to ease GPF operation requirements and provide additional particulate reduction. Techniques for reducing piston wetting generation of particles from use of DI alone are also described.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 12, 2019
    Assignee: Ethanol Boosting Systems, LLC
    Inventors: Leslie Bromberg, Daniel R. Cohn
  • Patent number: 10221788
    Abstract: A controller of an engine performing a premixed combustion operation and a diffusion combustion operation that are switchable in accordance with the traveling state of a vehicle, includes a detector detecting the gear position of the transmission mounted in the vehicle, and a changer changing the traveling conditions for performing the premixed combustion operation on the basis of the gear position detected by the detector.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: March 5, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Takafumi Yamaguchi, Kuniki Kanayama, Keita Nakamoto
  • Patent number: 10221804
    Abstract: A fuel injection control device for an internal combustion engine, includes a fuel pressure sensor and circuitry. The fuel pressure sensor detects an actual fuel pressure of the fuel supplied to a cylinder fuel injection valve. The circuitry calculates a demanded amount of the fuel supplied to the internal combustion engine. The circuitry calculates a cylinder injection amount of fuel injected from the cylinder fuel injection valve. The circuitry corrects the cylinder injection amount to decrease in accordance with a degree of drop in the actual fuel pressure comparing to a target fuel pressure of the fuel supplied to the cylinder fuel injection valve such that fuel injection from the cylinder fuel injection valve ends by a target injection end timing. The circuitry calculates a port injection amount of the fuel injected from a port fuel injection valve based on the demanded fuel amount and the corrected cylinder injection amount.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: March 5, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuichi Masukake, Koichiro Shinozaki, Nobuyuki Fujioka
  • Patent number: 10221795
    Abstract: The control apparatus operates an engine water temperature adjustment apparatus so that the temperature of cooling water that passes through an engine head enters a first temperature region in a lean mode, and operates the engine water temperature adjustment apparatus so that the temperature of the cooling water enters a second temperature region that is lower than the first temperature region in a stoichiometric mode. When knocking is detected after switching is started from the stoichiometric mode to the lean mode, the control apparatus performs any one of a first operation to operate a variable valve apparatus so as to retard the closing timing of an intake valve, a second operation to operate an oil jet apparatus so as to increase an oil jet amount, and a third operation to operate an EGR apparatus so as to increase an EGR amount.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 5, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Hotta, Hiroyuki Tanaka