Injection Of Fuel Onto Igniter, Deflector, Heater, Or Atomizer Patents (Class 123/298)
  • Patent number: 10907533
    Abstract: In a spark-ignition internal combustion engine in which a protrusion including an intake-side inclined surface and an exhaust-side inclined surface is formed on a top surface of a piston, and a cavity is formed in the protrusion at a position associated with a spark plug, the intake-side inclined surface and the exhaust-side inclined surface are formed in such a way that a ratio of a length of the exhaust-side inclined surface with respect to a length of the intake-side inclined surface is 1.25 or larger in a cross section passing through a center axis of the piston and orthogonal to an axis direction of a crankshaft.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 2, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Shuma Aoki, Hiroaki Muranaka, Naohiro Yamaguchi, Yoshitaka Wada
  • Patent number: 10876464
    Abstract: A piston for an internal combustion engine includes a crown portion having a bowl that includes a plurality of protrusions. Each of the plurality of protrusions includes a first side surface and a second side surface. Other features including at least one ledge formed between protrusions in segments, and a generally flat, inward facing surface on the protrusions may also be used.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: December 29, 2020
    Assignee: Caterpillar Inc.
    Inventors: Kenth I. Svensson, Jonathan W. Anders, Adam Dempsey
  • Patent number: 10801395
    Abstract: Various technologies presented herein relate to heating a fuel and enhancing fuel and charge-gas mixing inside a combustion chamber to enable minimal, or no, generation of soot and/or other undesired emissions during ignition and subsequent combustion of the locally premixed mixtures. To enable sufficient mixing of the fuel and charge-gas, a jet of fuel can be directed to pass through a bore of a duct causing charge-gas to be drawn into the bore creating turbulence to mix the fuel and the drawn charge-gas. The duct can be heated to provision heating of the fuel and charge-gas mixture. The duct can be located proximate to an opening in a tip of a fuel injector. An ignition assist component can be located downstream of the duct to facilitate ignition of the fuel/charge-gas mixture.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 13, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventor: Charles J. Mueller
  • Patent number: 10697391
    Abstract: A control system of a compression-ignition engine is provided, which includes an engine configured to cause combustion of a mixture gas inside the combustion chamber, an injector attached to the engine and configured to inject fuel into the combustion chamber, a spark plug disposed to be oriented into the combustion chamber and configured to ignite the mixture gas inside the combustion chamber, 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, respectively. After the spark plug ignites the mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller outputs the control signal to the injector so that a fuel injection timing is advanced when the engine operates at a high speed than at a low speed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: June 30, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Kota Matsumoto, Yusuke Kawai, Toru Miyamoto, Yudai Koshiro
  • Patent number: 10590898
    Abstract: Examples are directed to a fuel injection device positioned in a cylinder liner. In one example, a cylinder includes a combustion chamber which is jointly formed by a piston crown of a piston, by a cylinder barrel which laterally delimits the combustion chamber, and by a cylinder head. The cylinder includes an injection device positioned in the cylinder barrel for direct introduction of fuel into the combustion chamber, which injection device has at least one opening which, during a course of an injection process, is configured to be activated to introduce fuel into the combustion chamber, the injection device terminating flush, at a combustion chamber side, with the cylinder barrel.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: March 17, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Albert Breuer, Thomas Lorenz, Maziar Khosravi, Helmut Hans Ruhland
  • Patent number: 10378464
    Abstract: When it is determined that the igniting environment is out of the desired range, the variable valve mechanism is controlled so that the swirl ratio is increased. When the swirl ratio becomes high, the discharge spark and the initial flame move largely in the flow direction of the swirl flow SW and approach the closest fuel spray. Therefore, the discharge spark and the initial flame are attracted to the closest fuel spray and the initial flame enlarges by involving the closest fuel spray (middle stage of FIG. 7). Further, the initial flame enlarges further by involving surrounded fuel spray (lower stage of FIG. 7).
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 13, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kenji Hoshi
  • Patent number: 10273870
    Abstract: The present invention relates to a combustion chamber structure of an engine configured to inject fuel in a predetermined operation range in a period from a second half of a compression stroke until a first half of an expansion stroke to perform ignition after a compression top dead center. The combustion chamber structure includes: a piston including a cavity; a fuel injection valve provided at a middle portion of the piston; and a spark plug provided at a radially outer side of the middle portion of the piston and an upper side of the cavity. The cavity is formed by a curved surface having curvature that becomes larger as the curved surface extends toward the radially outer side. A tangential direction of an edge end portion of the curved surface intersects with a combustion chamber ceiling radially outward of the spark plug.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 30, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Takaaki Nagano, Yuji Harada
  • Patent number: 10208698
    Abstract: A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 19, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Seiichi Hosogai, Hidekazu Hironobu, Tatsuo Yamanaka, Haruya Kitano, Yasuhiro Okura
  • Patent number: 10066562
    Abstract: In a catalyst warming-up control, a first time injection is performed by an injector in an intake stroke. A second time injection is performed with an amount smaller than the first time injection in an expansion stroke after a compression top dead center. In the catalyst warming-up control, an interval from the start of the ignition period of an spark plug to the completion of the second time injection is controlled by the ECU so that the initial flame generated from an air-fuel mixture containing the fuel spray injected by the first time injection is brought into contact with the fuel spray injected by the second time injection.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: September 4, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shota Tsukamoto, Kotaro Suzuki
  • Patent number: 9856837
    Abstract: A flexible-fuel internal combustion engine apparatus comprises a combustion chamber, an intake valve, a first fuel injector, a second fuel injector, and a computer. The intake valve is operable to admit an intake charge into the combustion chamber. The first fuel injector injects a gaseous fuel directly into the combustion chamber. The second fuel injector injects a liquid fuel into the intake charge upstream of the intake valve. The computer is operatively connected with the first fuel injector and the second fuel injector to actuate injection of fuel respectively therefrom. The computer is programmed to command a gaseous-to-liquid fuel ratio as a function of at least one operating parameter from a group comprising gaseous fuel pressure, gaseous fuel mass, engine speed, engine torque, inlet air temperature, inlet air humidity, knock detection, operating history, torque command, and emissions.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: January 2, 2018
    Assignee: WESTPORT POWER INC.
    Inventors: Mark E. Dunn, John M. Lapetz, Alan B. Welch
  • Patent number: 9506439
    Abstract: A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including one or more orifices, the one or more orifices injecting fuel into the combustion chamber as one or more fuel jets. The system includes one or more adjustable length ducts disposed within the combustion chamber between the flame deck surface and the piston top surface, the one or more adjustable length ducts being disposed such that each of the one or more fuel jets, at least partially, enters one of the one or more adjustable length ducts upon being injected into the combustion chamber.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: November 29, 2016
    Assignee: Caterpillar Inc.
    Inventors: Jonathan Anders, Kenth Svensson, Chad Koci
  • Patent number: 9494119
    Abstract: A fuel injector injecting a fuel toward a combustion chamber mounted to a gasoline engine is provided with plural injection ports through which the fuel is injected. Each injection port includes an injection-port axial line limiting a pointing direction of the injection port, and the injection-port axial lines point to different directions. The injection ports include at least one intake injection port the injection-port axial line of which points to an intake space in the combustion chamber between a top surface of a piston of the internal combustion engine and an intake valve of the internal combustion engine. The intake injection port is defined by an inner peripheral wall surface extending in the injection-port axial line of the intake injection port and having a straight shape.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: November 15, 2016
    Assignee: DENSO CORPORATION
    Inventor: Noritsugu Kato
  • Patent number: 9435308
    Abstract: It is an object of the present invention to reduce the penetration of a fuel spray directed toward a certain area in a cylinder, thereby reducing oil dilution that increases sliding resistance in the engine, reducing fuel adhesion or the like onto the cylinder liner, and also reducing the adverse effect of a fuel spray having an increased penetration. A fuel injection valve that has a plurality of injection holes and injects fuel into a cylinder 3 of an internal combustion engine includes: injection holes a2 and a6 having a larger diameter for injecting fuel toward a ring-shaped space T1 including areas A2 and A6 of strong tumble flow T formed in the cylinder; and injection holes a1, a4, a3 and a5 having a smaller diameter for injecting fuel toward a space including areas A1, A4, A3 and A5 of weak tumble flow formed in the cylinder 3.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: September 6, 2016
    Assignee: Bosch Corporation
    Inventors: Kaoru Maeda, Yuichiro Goto, Wolfram Wiese, Daniel Scherrer
  • Patent number: 9228531
    Abstract: A piston for balancing combustion efficiency and smoke generation with NOx production includes a combustion face forming a combustion bowl having a compound curvature increased in sharpness in a radially outward direction. An outer bowl surface defines a large radius of curvature adjacent an inner bowl surface, and a medium radius of curvature adjacent a cylindrical wall surface. The inner bowl, outer bowl, and wall surfaces together contour the combustion bowl, such that a diameter of the combustion bowl is about 124 mm so as to establish a bowl to bore ratio of about 0.71 in a direct injection compression ignition engine with a compression ratio of about 15:1 to 17:1.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: January 5, 2016
    Assignee: Caterpillar Inc.
    Inventors: Aaron Ness, Scott Coulier, Thomas Kammerdiener, Jonathan Kilkenny
  • Patent number: 9217359
    Abstract: An internal-combustion engine includes a cylinder, a piston, a spark plug, and a fuel injection device. The piston includes a top surface, a guiding protrusion, and a cavity. The cavity is provided at a position closer to the fuel injection device than the guiding protrusion when viewed from above the top surface of the piston. The guiding protrusion includes a guiding surface to guide the fuel mist toward the spark plug when the fuel mist is injected from the fuel injection device at a first predetermined timing in a compression stroke. The cavity includes a guiding wall portion to guide the fuel mist toward the spark plug when the fuel mist is injected from the fuel injection device at a timing in the compression stroke between the first predetermined timing and a second predetermined timing.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: December 22, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kinya Fujii, Teruo Kobayashi, Yuki Ito, Shuichi Kitahara, Nobuo Suzuki, Yuusuke Wada, Kaoru Ishii, Kan Nakaune
  • Patent number: 9212819
    Abstract: A fuel injection duct for a combustion apparatus is provided. The fuel injection duct includes an inlet opening, an outlet opening, and an inner surface, wherein the inner surface exhibits a surface structure imparting a swirl to fuel moving from the inlet opening to the outlet opening, the fuel interacting with the surface structure of the inner surface. The manufacture of the fuel injection duct is easy and cost-effective and imparts a swirl to fuel flowing through the fuel injection duct.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: December 15, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Victoria Sanderson
  • Patent number: 9194317
    Abstract: A gasoline engine control system includes a crankshaft rotation sensor configured to measure a rotation speed of a crankshaft, a coolant temperature sensor configured to measure a coolant temperature, an engine knocking sensor, a valve timing mechanism, an engine igniter, an air/fuel controller, and a controller configured to obtain a crankshaft rotation speed, a coolant temperature, and knocking information from the crankshaft rotation sensor, the coolant temperature sensor, and the engine knocking sensor, respectively, to determine a fuel class flowing in the engine and a cold start adaption factor, determine a fuel/cold start adaption factor based on the fuel class and the cold start adaption factor, and control an operation of at least one of the valve timing mechanism, the engine igniter, and the air/fuel controller according to the determined fuel/cold start adaption factor when the determined fuel/cold start adaption factor may be not a predetermined reference fuel/cold start adaption factor.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 24, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Seungbum Kim
  • Patent number: 9046068
    Abstract: A fuel system for an engine having a cylinder liner is disclosed. The fuel system may have a gaseous fuel injector having a nozzle located at an air intake port of the cylinder liner. The gaseous fuel injector may be configured to inject gaseous fuel radially into the cylinder liner at an oblique vertical angle with respect to a plane perpendicular to an axis of the cylinder liner. The fuel system may also have a liquid fuel injector configured to inject liquid fuel axially into the cylinder liner.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 2, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Scott B. Fiveland, David T. Montgomery
  • Patent number: 8991357
    Abstract: There is provided efficient compression auto-ignition combustion over intermediate load range extended towards a low and high load range. An internal combustion engine enables compression auto-ignition combustion by securing a so-called sealed duration created by negative valve overlap. It includes a cylinder head, a cylinder, a piston in the cylinder having a top coupled to the cylinder head, a combustion chamber between an inner surface of a cylinder head and a top of the piston, and intake and exhaust valves. Two intake valves are arranged per each combustion chamber and made to differ in valve lift.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 31, 2015
    Assignee: Suzuki Motor Corporation
    Inventor: Hiroaki Inoue
  • Patent number: 8983756
    Abstract: An internal combustion engine has a cylinder, a cylinder head mounted to the cylinder, a piston disposed in the cylinder, and a fuel injection valve. A combustion chamber is defined by the piston, the cylinder head and the cylinder. The fuel injection valve has a plurality of injection holes that injects fuel directly inside the cylinder from a side of the combustion chamber. The injection holes inject fuel in a spray shape with an overall shape, which is formed by a plurality of sprays being injected from the injection holes. The overall shape expands toward the cylinder head and forms one part of a conical shape that is dented near the piston. Central axes of some of the injection holes are oriented toward a boundary portion near the exhaust valve formed at a crown surface of the piston and an inner wall of the cylinder when fuel is injected.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: March 17, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomohiro Sakata, Daisuke Tanaka, Futoshi Yoshimura, Ryo Uchida
  • Patent number: 8967129
    Abstract: An internal combustion engine includes an engine block having a cylinder bore and a cylinder head having a flame deck surface disposed at one end of the cylinder bore. A piston connected to a rotatable crankshaft and configured to reciprocate within the cylinder bore has a piston crown portion facing the flame deck surface such that a combustion chamber is defined within the cylinder bore and between the piston crown and the flame deck surface. A fuel injector having a nozzle tip disposed in fluid communication with the combustion chamber has at least one nozzle opening configured to inject a fuel jet into the combustion chamber along a fuel jet centerline. At least one duct defined in the combustion chamber between the piston crown and the flame deck surface has a generally rectangular cross section and extends in a radial direction relative to the cylinder bore substantially along the fuel jet centerline.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Inc.
    Inventor: Charles Mueller
  • Patent number: 8967115
    Abstract: Fuel is injected into and through the exhaust port and into the cylinder of the piston engine during the time when the flow is reversed from the normally expected flow. The engine is able to operate with some or all of its fuel injected backwards of conventional expectations. In another embodiment the fuel is injected with solid stream injector sprays directed against exhaust valves and ports and deflected into the piston cylinder against the flow of normally aspirated or supercharged engines. This invention can apply to gasoline or diesel cycles and four and two stroke type cycles of engine.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: March 3, 2015
    Inventor: Francis Xavier Gentile
  • Publication number: 20150053172
    Abstract: A diesel combustion system including an injector and a combustion chamber. The combustion chamber is formed by a cylinder head, a cylinder liner, and a piston. The combustion chamber includes an upper layer and a lower layer. The diameter D1 of the upper layer is larger than the diameter D2 of the lower layer. A junction of the upper layer and the lower layer is provided with an impinging block for rebounding the diesel fuel spray. The impinging block includes an impinging surface, an upper guide surface, and a lower guide surface. When in use, part of the diesel fuel spray is rebounded by the impinging surface, and part of the diesel fuel spray is diffused along the upper guide surface and the lower guide surface of the impinging block to achieve double-layered split flow of the diesel fuel.
    Type: Application
    Filed: October 31, 2014
    Publication date: February 26, 2015
    Inventors: Wuqiang LONG, Kunpeng QI, Jiangping TIAN, Qiang ZHANG, Kai SHENG, Ping YI, Yicong WANG, Yao FU
  • Patent number: 8960151
    Abstract: A direct injection engine includes a fuel injector receiving a flow of pressurized fuel. The fuel injector provides fuel injections directly into a combustion chamber of the engine. The fuel injector includes a first fuel injector nozzle opening directing with a first narrow injection angle a first portion of a fuel injection mass at a spark gap of a spark plug. The fuel injector further includes a second fuel injector nozzle opening dispersing with a second wider injection angle a second portion of the fuel injection mass within the combustion chamber.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 24, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Ronald O. Grover, Jr., Hanho Yun, Paul M. Najt
  • Patent number: 8910619
    Abstract: A method of improving the combustion of a spark-ignition internal combustion engine. Such engines have at least one cylinder, each cylinder having a compression chamber and operated such that an air-fuel mixture introduced into the combustion chamber is ignited to cause a combustion event. An antenna is placed within the combustion chamber, and is used to apply electromagnetic energy to the combustion.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: December 16, 2014
    Assignee: Southwest Research Institute
    Inventors: Jess W. Gingrich, Terrence F. Alger, II, Charles E. Roberts, Jr.
  • Patent number: 8881706
    Abstract: A piston for an internal combustion engine, for example a diesel engine, including a body delimited laterally by a skirt and configured to collaborate with walls of a cylinder of axis of revolution C in which the piston can slide along the axis C, the piston including a transverse face including a central pip, a peripheral ring, and a bowl of axis of revolution B that extends from the central pip towards the peripheral ring to which it connects at a lip of thickness Ep, the bowl including, in substantial vertical alignment with the lip, a torus in profile, for example of dome-shaped, of maximum radius capable of guiding fuel injected under the lip in the region of a re-entrant zone towards the central pip. The tip of the central pip exhibits a flattened region centred on the axis of revolution B of the bowl, of a width Lt ranging between 0 mm and 5 mm, or substantially equal to 2.5 mm.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 11, 2014
    Assignee: Renault S.A.S.
    Inventors: Sylvain Augot, Anne-Marie Doisy, Gregory Musq
  • Patent number: 8800527
    Abstract: A fuel injector-igniter incorporating adaptive swirl injection and ignition. The fuel injector-igniter comprises a housing, an actuator, and a valve. The valve includes a valve head operative to open and close against a valve seat in response to activation of the actuator. The valve seat includes an electrode portion extending beyond the valve head and within the housing to form at least one gap, such as an annular gap. A current discharge between the housing and electrode portion establishes a plasma and electromagnetic forces driving the plasma from the gap. The injector-igniter may further comprise a power supply connected to the housing and valve seat that is operative to provide the current discharge. The electrode portion includes a plurality of flow shaping features, such as a plurality of twisted fins disposed around the electrode portion and thereby operative to impart a rotation to the plasma.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 12, 2014
    Assignee: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Patent number: 8776760
    Abstract: Passageways are provided within the combustion chamber of a fuel injected internal combustion engine to convey injected fuel to desired positions within the combustion chamber. The fuel-conveying passageways may be either open-sided or closed, and are positioned within the combustion chamber in substantial alignment with a respective spray jet of fuel, enabling optimum distribution of the fuel through the combustion chamber for enhanced mixing with air prior to combustion.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: July 15, 2014
    Assignee: Southwest Research Institute
    Inventor: Chad H. Stovell
  • Patent number: 8718903
    Abstract: In a direct injection spark ignition internal combustion engine that includes a fuel injection valve, and closes an intake valve after gas in the combustion chamber begins to flow back into an intake passageway after the compression stroke begins. The required fuel injection amount is injected a first fuel injection and a second fuel injection in a single combustion cycle, and the first fuel injection is performed while the intake valve is open during the compression stroke, and the second fuel injection is performed after the intake valve closes. The timing of the first fuel injection is set such that the injected fuel is deflected upwards in the top of the combustion chamber by the gas flowing toward the intake valve.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 6, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Sachio Mori
  • Patent number: 8714136
    Abstract: In a direct fuel-injection engine equipped with a pentroof-shaped piston, cross-sectional shapes containing a piston central axis (Lp) of a cavity recessed in a central part of the piston having a top face with the height varying in the circumferential direction are set so as to be basically identical at each position in the circumferential direction (see broken line).
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 6, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kenichiro Ikeya, Nobuhiko Sasaki, Hiroshi Sono, Yukihisa Yamaya, Akihiro Yamaguchi, Yoshimasa Kaneko, Goichi Katayama, Yutaka Tajima
  • Patent number: 8701627
    Abstract: In a combustion space of a combustion engine, an inlet valve to supplies a gaseous medium which contains oxygen to the combustion space. A movable piston to compress the gaseous medium in the combustion spaces. An injector injects fuel in the combustion space in a jet which comprises a multiplicity of small fuel drops. The injector injects fuel in the combustion space at such a high initial velocity that the fuel injected in the jet mixes with the gaseous medium to form a substantially homogeneous mixture before the mixture has been decelerated to a velocity at which the fuel ignites and burns. Devices may cool the gaseous medium and the fuel before entry into the combustion space.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: April 22, 2014
    Assignee: Scania CV AB (Publ)
    Inventors: Vesa Hokkanen, Lars Dahlén, Jonas Holmborn, Andreas Cronhjort
  • Publication number: 20140090622
    Abstract: An internal combustion engine electrically ignites most of the fuel as it is introduced into the combustion chamber. This design solves the lower efficiency of typical Otto Cycle engines by allowing the use of a full air charge for each power cycle. This design also solves the problem of heavy duty designs required for existing diesel cycle engines by allowing relatively low compression ratios and therefore lighter weight engine designs. The engine design allows a wide range of fuel combustion properties, as it avoids a dependence on flame propagation through a combustible mixture, where fuel combustion properties control evaporation, rate of flame front propagation and the like. The engine design forces the combustion to be initiated as and at the rate the fuel is introduced into the combustion chamber.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Inventor: Harold Cranmer Seelig
  • Patent number: 8677974
    Abstract: A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including a generally concave portion including a flat bottom surrounding a central protruding dome. The relatively flat bottom portion is bounded by two radial concave surface portions which are disposed below two convex separation features for the injected fuel spray. Such surface geometries may reduce soot and improve fuel-air mixing.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 25, 2014
    Assignee: Southwest Research Institute
    Inventors: Rainer J. Rothbauer, Charles E. Roberts, Jr., Chad H. Stovell
  • Patent number: 8671908
    Abstract: A four-valve per cylinder engine has two intake valves, two exhaust valves and a centrally located fuel injector. Between each adjacent pair of valves is a valve bridge with a point of minimum separation between adjacent valves. In the present disclosure, the glow plug port is defined in the cylinder top at a location outboard of the minimum separation between adjacent and at a depth which is tangent to an edge of a fuel jet emanating the injector. By placing the glow plug farther outboard than found in the prior art, the glow plug contacts the fuel as it comes out of the injector and as it rebounds off a feature of the piston bowl.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 18, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: David Curtis Ives, Brien Lloyd Fulton, Eric Matthew Kurtz, Bradley David Opperman, Joshua Putman Styron, Patrick Brian Morgan, Martin Johannes Atzwanger
  • Patent number: 8646428
    Abstract: A piston is positioned for reciprocal movement in a combustion engine cylinder. Half way between flame plume impingement areas are arranged a first type of protrusions protruding into the combustion chamber and having a smooth form adapted for preserving kinetic energy in a flame plume. Each of the first type of protrusions has a shape of a longitudinal ridge that extends only in the outer bowl area. The first type of protrusions have a left side flank and a right side flank of the ridge when seen from the injector. The left side flank is formed differently compared to the right side flank in order to redirect the movement of a flame plume progressing towards the left side flank in a plane perpendicular to the reciprocal movement, differently compared to corresponding flame plume progressing, towards the right side flank.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: February 11, 2014
    Assignee: Volvo Technology Corporation
    Inventors: Jan Eismark, Michael Balthasar
  • Patent number: 8534260
    Abstract: A sub-injector injects liquid fuel into a vaporized-fuel chamber of a vaporized-fuel tank. The injected liquid fuel is vaporized in the vaporized-fuel chamber. The generated vaporized fuel is supplied to a combustion chamber through a vaporized-fuel passage. A supply of the vaporized fuel to the combustion chamber is controlled by a purge valve. Thereby, the vaporized fuel can be precisely supplied to the engine at a start of engine, so that emission can be reduced.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: September 17, 2013
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Takanobu Kawano, Toru Kosuda, Yasuo Kato, Fukuo Kitagawa, Motomasa Iizuka
  • Patent number: 8505513
    Abstract: The present invention is a fuel injection method for a direct-injection internal-combustion engine, preferably of diesel type, comprising a cylinder (10) closed by a cylinder head (16), a piston (12) comprising a bowl (18), and a fuel injector (48). The method feeds the fuel into a bowl coated with a thermal insulation coating in at least two successive injections in quick succession to achieve low-temperature combustion of the fuel mixture.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 13, 2013
    Assignee: IFP
    Inventor: Julian Kashdan
  • Patent number: 8468998
    Abstract: An engine assembly may include an engine structure, a piston, and a direct injection fuel system. The engine structure may define a cylinder bore and an intake port in communication with the cylinder bore and adapted to mitigate intake air swirl within the cylinder bore. The piston may be disposed within the cylinder bore for a reciprocal stroke between a top dead center position and a bottom dead center position. The piston may define an annular recess portion in an axial end surface thereof. The direct injection fuel system may include a fuel injector that provides a fuel spray to a combustion chamber defined by the piston and the cylinder bore. The fuel spray may define an annular plume intersecting the annular recess portion in the piston when the piston is in an injection position within twenty percent of the reciprocal stroke from the top dead center position.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: June 25, 2013
    Inventor: Robert D. Straub
  • Patent number: 8464686
    Abstract: A wall shape of a cavity consists of an inward protruding portion located at the periphery of an opening, a center portion projecting toward a fuel injector, and a peripheral portion connecting the inward protruding portion and the center portion. The fuel injector and the cavity are configured so that fuel injected from fuel injector directs to the proximity of the border between the inward protruding portion and the peripheral portion. The peripheral portion consists of a first portion located farthermost from the fuel injector, a second portion located between the inward protruding portion and the first portion, and a third portion located between the first portion and the center portion. The radii of arcs of the peripheral portion decrease from the second portion to the first portion and increase from the first portion to the third portion.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: June 18, 2013
    Assignee: Mazda Motor Corporation
    Inventors: Sangkyu Kim, Daisuke Shimo, Motoshi Kataoka
  • Patent number: 8459229
    Abstract: A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including at least one surface feature that forms at least one edge portion as a target for the fuel spray, the edge portion defined by two or more surface portions. The surface feature may protrude from the inner surface of the bowl or may be recessed into the inner surface. Such surface features may reduce soot and improve fuel-air mixing.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: June 11, 2013
    Assignee: Southwest Research Institute
    Inventors: Rainer J. Rothbauer, Charles E. Roberts, Jr.
  • Publication number: 20130133614
    Abstract: An internal-combustion engine includes a cylinder, a piston, a spark plug, and a fuel injection device. The piston includes a top surface, a guiding protrusion, and a cavity. The cavity is provided at a position closer to the fuel injection device than the guiding protrusion when viewed from above the top surface of the piston. The guiding protrusion includes a guiding surface to guide the fuel mist toward the spark plug when the fuel mist is injected from the fuel injection device at a first predetermined timing in a compression stroke. The cavity includes a guiding wall portion to guide the fuel mist toward the spark plug when the fuel mist is injected from the fuel injection device at a timing in the compression stroke between the first predetermined timing and a second predetermined timing.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 30, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: HONDA MOTOR CO., LTD.
  • Patent number: 8448624
    Abstract: A direct injection internal combustion engine employs a spray guided combustion method, wherein a fuel spray injected from a fuel injection valve is collected at an electrode section of a spark plug so that satisfactorily high combustion performance may be achieved even with a small amount of injected fuel. The engine includes spray control posts 30 arranged on both sides of the spark plug 5, for guiding the fuel injected from the fuel injection valve 4 to be directed toward the electrode section 10 of the spark plug 5.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 28, 2013
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Dai Tanaka, Koji Hata, Kazuyoshi Nakane, Kimihiko Sato, Shigeo Yamamoto
  • Publication number: 20130118447
    Abstract: A method for vaporizing fuel is provided. The method comprises heating the fuel in a cylinder of an engine via radiation to vaporize the fuel without ignition. In this way, the fuel may be heated to increase vaporization efficiency prior to ignition.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 16, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Douglas Raymond Martin, Kenneth James Miller
  • Publication number: 20130092123
    Abstract: An internal combustion engine includes an engine assembly that defines a bore, and a piston disposed and moveable within the bore. The piston and the engine assembly cooperate to define a combustion chamber therebetween. A direct injection fuel system directs a fuel spray into the combustion chamber along a linear path. The combustion chamber includes a contoured surface having a plurality of annular recesses. The contoured surface divides and re-directs the fuel spray from the linear path into each of the annular recesses to form a plurality of independent rotating vortices.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Robert D. Straub
  • Patent number: 8418673
    Abstract: In a diesel engine including a fuel injection valve for injection of fuel into a combustion chamber to produce sprays in the chamber, an axis of the valve is deviated radially outwardly of an axis of a cylinder, so that the valve is positioned close to an inner periphery of the cylinder. Nozzle holes of the valve are grouped into two groups with respect to a line formed by connecting, in plan view, the axis of the valve with the axis of the cylinder. The sprays injected from the nozzle holes advance in a fan-like manner in the plan view and strike against the inner periphery of the cylinder on a side away from the valve.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: April 16, 2013
    Assignee: IHI Corporation
    Inventors: Youichi Marutani, Yasunori Ashikaga, Takayuki Yamada, Mamoru Kurashina
  • Publication number: 20130019838
    Abstract: A diesel engine piston having a combustion chamber may include a profile surface that protrudes toward a center axis of the combustion chamber from an inner wall thereof and includes a protrusion on the inner wall, the protrusion extending from the inner wall with a predetermined length, wherein the protrusion divides a spray fuel, which may be sprayed and atomized onto the protrusion, into a fuel flow at an upper portion of the combustion chamber and a fuel flow at a lower portion of the combustion chamber, respectively.
    Type: Application
    Filed: November 4, 2011
    Publication date: January 24, 2013
    Applicant: Hyundai Motor Company
    Inventors: Myungjun Lee, Dae Choi, Hyunsung Jung, Minyoung Ki, Hyeungwoo Lee
  • Patent number: 8327822
    Abstract: A diesel engine in which a lubrication oil on the wall surface of the cylinder liner is prevented from being burned and diluted, and a smoke resulting from the local lack of air in the combustion chamber is also prevented from being generated. The diesel engine comprises a group injection hole nozzle 20 and a piston 110. A step 115 having a height gradually increased toward the radial outer circumference of the piston is formed over the entire circumference of the top surface 111 of the piston. Furthermore, a tilted part 115b is formed as the step surface of the step 115.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: December 11, 2012
    Assignees: Yanmar Co., Ltd., Denso Corporation
    Inventors: Gou Asai, Takeshi Takahashi, Terumitsu Takahata, Takahiko Kimura, Tomoyuki Tsuda
  • Patent number: 8291884
    Abstract: An engine having cylinders capable of combusting gaseous fuel includes at least one spark plug per cylinder, a gaseous fuel injector extending into each cylinder and having at least one nozzle cluster containing a one or more nozzles positioned to direct gaseous fuel only toward a spark gap of an associated spark plug, and a control system operating each spark plug and each injector to deliver gaseous fuel directly to the cylinder and initiate combustion. A method for controlling an engine capable of operating with gaseous fuel includes injecting the gaseous fuel directly into each cylinder through a centrally located injector having a plurality of clusters of nozzles, each cluster associated with one of at least two spark plugs positioned closer to a cylinder wall than to the injector, each cluster directing the gaseous fuel toward an associated spark plug gap.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 23, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Brad Alan Boyer, Matthew Aaron Younkins
  • Publication number: 20120152202
    Abstract: A fuel injection valve having a nozzle body having nozzle holes in a tip portion thereof, where fuel led into the nozzle body is injected from the nozzle holes, the fuel injection valve including a first swirl member for generating a first swirl flow in a part of the fuel in the nozzle body; and a second swirl member for generating a second swirl flow in a part of remaining fuel in the nozzle body, the first and second swirl members being mounted so that, as viewed along a center line of the nozzle hole, the first swirl flow is located on one side of an inlet opening of the nozzle hole, while the second swirl flow is located on the other side of the inlet opening, and the first and second swirl flows are formed as opposed flows passing each other across the nozzle hole from each other.
    Type: Application
    Filed: July 21, 2009
    Publication date: June 21, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Toshikuni Kurokawa
  • Publication number: 20120085316
    Abstract: A direct-injection internal combustion engine is provided. The engine comprises at least one cylinder in which a combustion chamber is jointly formed by a piston crown of a piston and by a cylinder head, each cylinder having an inlet opening for the supply of fresh air, and an injection nozzle which is arranged in the cylinder head on the opposite side of the piston crown, on which injection nozzle, at a free end projecting into the combustion chamber, are provided a plurality of nozzle holes for the direct injection of the fuel, the injection nozzle being arranged eccentrically, spaced apart from a longitudinal axis of the cylinder and inclined at an angle ? to the longitudinal axis of the cylinder, at least two of the plurality of nozzle holes including opening cross-sections of different size. In this way, an equal fuel distribution in the cylinder may be provided.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 12, 2012
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Guohui Chen, Werner Willems, Claudia Conee, Arnd Sommerhoff