Reactor Plus A Washer, Sorber Or Mechanical Separator Patents (Class 60/297)
  • Patent number: 10378411
    Abstract: The present disclosure is directed at a dosing method and apparatus for treatment of reductant urea solutions with water soluble organometallic catalyst precursors which convert to active catalyst compounds in diesel exhaust gas systems. The active catalysts then promote hydrolysis of isocyanic acid into ammonia and/or decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 13, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Cary A. Henry, Ryan C. Hartley
  • Patent number: 10352220
    Abstract: The exhaust gas stirring device comprises a cylindrical frame on an inner surface of a flow path member forming an exhaust flow path; supporting parts arranged to radially reach across the frame; a shielding part shielding a central axis of the frame and its circumference in the axis direction of the frame. One of the supporting parts comprises a pair of first skeletons extending radially outwardly from the central axis of the frame. The frame and the supporting parts are configured by assembling assembling members. One of the assembling members comprises the pair of first skeletons, and second skeletons respectively extending in an arc shape from one end of each of the first skeletons and constituting a part of the frame. Each of the first skeletons and the second skeletons in the assembling members comprises a vane part formed to protrude respectively from each of the first and second skeletons.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 16, 2019
    Assignee: FUTABA INDUSTRIAL CO., LTD.
    Inventor: Yoshinobu Nagata
  • Patent number: 10344458
    Abstract: A hydraulic drive system 100A for a work machine includes: a boom cylinder 4; an arm cylinder 8; a hydraulic pump device 51; a control valve 5; a regenerative device 61; a first operation device 41; a second operation device 42; a sensor device 71; and a controller 27. The sensor device 71 includes at least one of pressure sensors 23, 24, 25, and 26. The controller 27 includes an abnormality detection part 142 and a first control part. The abnormality detection part 142 determines whether or not the sensor device 71 is abnormal. If the sensor device 71 is abnormal, the first control part controls the regenerative device 61 such that the hydraulic fluid returning from the boom cylinder 4 is not supplied to the arm cylinder 8 even if the values measured by the sensor device 71 satisfy regenerative conditions.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: July 9, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Seiji Hijikata, Kouji Ishikawa, Shinya Imura
  • Patent number: 10344647
    Abstract: Provided are a method and a system for treatment of an exhaust stream, from a combustion engine comprising nitrogen oxides. An estimate of at least one future operating condition for the exhaust treatment system is determined based on a road section ahead of the vehicle. A first additive is input into the exhaust stream to cause a first reduction of nitrogen oxides in a first reduction catalyst device. A second additive is input into the exhaust stream to cause a second reduction of a second amount of nitrogen oxides in a second reduction catalyst device, arranged downstream of the first reduction catalyst device. The first supply of additive is controlled based on the estimated at least one future operating condition, such that the first reduction catalyst device is exposed, over time, to a substoichiometric condition, with respect to the first additive and the first amount of nitrogen oxides.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: July 9, 2019
    Assignee: Scania CV AB
    Inventor: Magnus Nilsson
  • Patent number: 10337381
    Abstract: The invention relates to an exhaust gas aftertreatment device for an internal combustion engine, where the device comprises: an exhaust duct allowing a through-flow of exhaust gas; a catalytic NOx converter arranged in the exhaust duct; and a fluid inlet arranged to introduce a liquid reductant into or onto a structure in the exhaust duct upstream the catalytic NOx converter. The invention is characterized in that the structure is a sorption structure having pores configured to retain the liquid reductant in liquid form until it evaporates. The invention also relates to a vehicle provided with such a device.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: July 2, 2019
    Assignee: VOLVO CAR CORPORATION
    Inventors: Marie Stenfeldt, Peter Sandberg, Rakshith Ramachandra
  • Patent number: 10309285
    Abstract: An exhaust gas control system for an internal combustion engine, before execution of a filter regeneration process, executes a pre-regeneration process that is a process of raising a temperature of a filter to a second target temperature lower than a first target temperature and increasing the concentration of NO2 contained in exhaust gas flowing into the filter for a predetermined period. The first target temperature during execution of the filter regeneration process in the case where a speed of change in a detected value of a differential pressure sensor during execution of the pre-regeneration process is high is set so as to be lower than the first target temperature in the case where the speed of change is low.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: June 4, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daichi Imai, Hiromasa Nishioka, Kiyoshi Fujiwara, Yoshio Yamashita, Kouta Tanaka
  • Patent number: 10302000
    Abstract: An exhaust gas control system for an internal combustion engine, before execution of a filter regeneration process, executes a pre-regeneration process that is a process of raising a temperature of a filter to a second target temperature lower than a first target temperature and increasing the concentration of NO2 contained in exhaust gas flowing into the filter for a predetermined period. An execution time of the filter regeneration process when a physical quantity that correlates with a speed of change in a detected value of a differential pressure sensor during execution of the pre-regeneration process is large is shorter than an execution time of the filter regeneration process when the physical quantity is small.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 28, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daichi Imai, Hiromasa Nishioka, Kiyoshi Fujiwara, Yoshio Yamashita, Kouta Tanaka
  • Patent number: 10280824
    Abstract: An exhaust system includes a particulate filter, a variable valve, and a controller communicatively connected to the variable valve. The controller is operative to determine a backpressure caused by the particulate filter in the exhaust system, and control a position of the variable valve as a function of the backpressure caused by the particulate filter.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: May 7, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Glenn Pietila, John Pierce, III, Gerald J. Clark
  • Patent number: 10273858
    Abstract: A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. Responsive to the time value being greater than or equal to the predetermined time threshold, the controller decreases a flow threshold value to a lower flow threshold value. If the flow amount is greater than or equal to the lower flow threshold value, then the controller activates a delta pressure soot load estimation process. A combined soot load estimate is then calculated using a delta pressure soot load estimation of the delta pressure soot load estimate process responsive to the lower flow threshold value.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: April 30, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Tony J. Hall, Yinghuan Lei, Weiwen Wang, Daniel D. Wilhelm
  • Patent number: 10222303
    Abstract: A dual spray chamber apparatus is described. In one or more implementations, the dual spray chamber apparatus includes a first cyclonic spray chamber for receiving an aerosol and conditioning the aerosol to separate a first conditioned portion of the aerosol from a second portion of the aerosol. The first cyclonic spray chamber defines a first chamber interior and comprises an input port in fluid communication with the first chamber interior. The dual spray chamber apparatus also includes a second spray chamber coupled with the first cyclonic spray chamber for receiving the first conditioned portion of the aerosol and further conditioning the first conditioned portion of the aerosol. The second spray chamber defines a second chamber interior and comprises an output port for expelling a first further conditioned portion of the first conditioned portion of the aerosol from the second chamber interior.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: March 5, 2019
    Assignee: ELEMENTAL SCIENTIFIC, INC.
    Inventors: Daniel R. Wiederin, Kyle W. Uhlmeyer, James W. Harris
  • Patent number: 10221740
    Abstract: An exhaust gas post treatment system for an internal combustion engine, in particular a heavy fuel oil-powered engine, including an SCR catalyst, using ammonia as a reducing agent for the denitration of the exhaust gas, and a device positioned upstream of the SCR catalyst by which ammonia or an ammonia precursor substance, which is converted to ammonia, is introduced upstream of the SCR catalyst. Downstream of the SCR catalyst an exhaust gas scrubber is positioned, by which excess ammonia, contained in the exhaust gas leaving the SCR catalyst, together with sulfur oxides, can be scrubbed out of the exhaust gas forming ammonium salts while maintaining a pH value of approximately 6. For the control thereof, a bypass around the SCR catalyst can be provided as a westgate, or comprising an additional SCR catalyst.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 5, 2019
    Assignee: MAN Energy Solutions SE
    Inventor: Andreas Döring
  • Patent number: 10161281
    Abstract: The present disclosure provides an exhaust purification system including: an engine; a lean NOx trap (LNT) mounted on an exhaust pipe and enable to absorb nitrogen oxide (NOx) contained in an exhaust gas at a lean air/fuel ratio, or to release the absorbed NOx at a rich air/fuel ratio; a selective catalytic reduction (SCR) catalyst provided downstream of the LNT so as to reduce the NOx contained in the exhaust gas; a controller to perform denitrification (DeNOx) by using the LNT and/or the SCR catalyst based on a driving condition of the engine; a first oxygen sensor disposed between the engine and the LNT to detect an oxygen amount in the exhaust gas; a second oxygen sensor disposed between the LNT and the SCR catalyst to detect an oxygen amount in the exhaust gas exhausted from the LNT; and an air injection device selectively injecting air into the exhaust pipe.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 25, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Jin Woo Choung
  • Patent number: 10138834
    Abstract: A diesel engine system comprises a particulate filter interposed in an exhaust line and a plurality of fuel injectors associated with an engine. When a quantity of particulate accumulated within said filter is estimated to be greater than a threshold, a control mode of the injectors is activated causing an automatic regeneration of the filter, by increasing a temperature of exhaust gases fed to the filter sufficient for burning the particulate within the filter. A statistical model is applied which estimates the quantity of particulate accumulated in the filter per time unit The estimation of the particulate accumulated in the filter is corrected after each regeneration of the filter, on a basis of a comparison between the real variation of said temperature during the regeneration as detected by a sensor and a stored reference variation of said temperature previously detected empirically during a regeneration with the filter being empty.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 27, 2018
    Assignee: Fiat Group Automobiles S.p.A.
    Inventor: Danilo Garombo
  • Patent number: 10138777
    Abstract: Methods for evaluating a soot quantity accumulated in a selective catalytic reduction wash-coated particulate filter (SCRF) of an exhaust gas treatment system are provided, and include injecting reductant proximate the SCRF, determining one or more mapping values, computing a correction value of a soot quantity using a map correlating the one or more mapping values, detecting an apparent soot burning operating temperature, and correcting an estimated value of the soot quantity using the correction value in order to obtain an evaluated value of the soot quantity. The one or more mapping values can include a reductant injection quantity value, a NOx quantity value, a temperature value, and a mass flow value of an exhaust gas. The apparent soot burning operating temperature can comprise a temperature at which a ?P across the SCRF improperly implies an actual soot burning. Further provided are apparatuses for performing the disclosed methods.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: November 27, 2018
    Inventors: Luciano Nunziato Di Perna, Stefano Pellegrino, Isadora Ricci
  • Patent number: 10138788
    Abstract: A lattice board is obliquely arranged in a bent portion halfway in an exhaust pipe where exhaust gas flows curvedly so as to bisect an angle made by inflow and outflow directions the exhaust gas entered upstream of and discharged downstream of the bent portion, respectively. An injector is arranged in the outflow direction of the exhaust gas to inject urea water to an entry side of the lattice board such that flow passage walls of the lattice board on which hit is the exhaust gas from upstream has rear surfaces on which hit is a spray of urea water from the injector.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: November 27, 2018
    Assignee: HINO MOTORS, LTD.
    Inventors: Hirofumi Tongu, Tomoyuki Tsuruta
  • Patent number: 10125654
    Abstract: An exhaust control system for an internal combustion engine comprises: a trapping capability acquisition part that obtains information regarding a PM trapping capability, based on a detection value of an exhaust sensor provided to detect a predetermined parameter relating to an exhaust gas flowing out of an SCRF; and a NOx reduction capability acquisition part obtains information regarding a NOx reduction capability, based on an amount of NOx in the exhaust gas flowing out of the SCRF. The exhaust control system determines and distinguishes between a trapping abnormal state in which a PM trapping function by the SCRF is failed and a sensor abnormal state in which a detection function of the predetermined parameter by the exhaust sensor is failed, based on the NOx reduction capability obtained by the NOx reduction capability acquisition part, when the trapping capability obtained by the trapping capability acquisition part is in a predetermined low trapping capability state.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 13, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Taiga Hagimoto, Tomoyuki Kogo, Arifumi Matsumoto, Kenji Furui, Akifumi Uozumi
  • Patent number: 10087809
    Abstract: A system and method for preventing a failure of an exhaust heat recovery device are provided. The method includes operating a sole exhaust heat recovery mode when cooling water has a temperature less than a warm-up reference temperature to introduce all exhaust gas flowing from a DPF into the exhaust heat recovery device where the exhaust gas exchanges heat with the cooling water. Additionally, a passage through which the exhaust gas bypasses the exhaust heat recovery device is opened when the exhaust gas at a rear of the DPF has a temperature greater than the warm-up reference temperature during the sole exhaust heat recovery mode.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 2, 2018
    Assignee: Hyundai Motor Company
    Inventors: Myung Jun Lee, Jun Yong Lee
  • Patent number: 10072548
    Abstract: A method for injecting a reductant into an exhaust gas of a power system. The method includes oscillating injections of the reductant between a higher reductant injection rate and a lower reductant injection rate. The higher injection rate is high enough to result in storage of a decomposed form of the reductant on a selective catalytic reduction on-filter (“SCR+F”), and the lower injection rate being low enough to result in depletion of the decomposed form of the reductant on the SCR+F. The SCR+F includes a diesel particular filter and a selective catalytic reduction catalyst applied thereto.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 11, 2018
    Assignee: Deere & Company
    Inventors: Josh C Schmitt, Scott A Chase, Taner Tuken
  • Patent number: 10041391
    Abstract: An apparatus includes a catalytic converter on an exhaust pipe and provided with a lean NOx trap (LNT) device coated with an LNT catalyst, and a catalyzed particulate filter (CPF) coated with a catalyst. The LNT device and CPF are sequentially disposed in the catalytic converter. The CPF includes at least one inlet channel, extending in a longitudinal direction, having a first end into which fluid flows and a blocked second end; at least one outlet channel, extending in the longitudinal direction, having a blocked first end and a second end through which the fluid flows out; at least one porous wall defining a boundary between neighboring inlet and outlet channels and that extends in the longitudinal direction; and a support coated with the catalyst and located within at least one among the at least one inlet channel and the at least one outlet channel.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: August 7, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: ChangHo Jung, Pyung Soon Kim
  • Patent number: 10030560
    Abstract: An exhaust purification device for purifying exhaust gas flowing in an exhaust gas flow passage of an engine includes: a cylindrical casing; a pipe that is disposed on a downstream side of the casing and inserted in the casing so as to extend in a direction substantially orthogonal to an axial direction of the casing, the pipe being provided with a through-hole communicating with the casing; and an injector configured to inject a reducing agent from an upstream end of the pipe into the pipe, in which a contracting flow passage portion narrowing in an axial direction of the pipe from an upstream side toward the downstream side is formed in the exhaust gas flow passage in the casing.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 24, 2018
    Assignee: Hino Motors, Ltd.
    Inventors: Kuniharu Tobe, Hirofumi Tongu, Tomoyuki Tsuruta
  • Patent number: 10029209
    Abstract: An exhaust gas purification material according to the present invention is provided with a particulate filter that traps particulate matter in exhaust gas and contains an SCR catalyst for adsorbing ammonia and reducing NOx in the exhaust gas. A maximum allowable adsorption amount of ammonia adsorbable by the filter differs between an upstream portion of the filter including an exhaust gas inlet-side end, and an downstream portion of the filter including an exhaust gas outlet-side end. A maximum allowable adsorption amount of ammonia A in the upstream portion is smaller than a maximum allowable adsorption amount of ammonia B in the downstream portion (A<B).
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 24, 2018
    Assignee: CATALER CORPORATION
    Inventors: Makoto Tsuji, Hiroto Imai, Shintaro Kobayashi
  • Patent number: 10024265
    Abstract: Methods and systems are provided for estimating exhaust pressure based on an exhaust air/fuel ratio sensor. In one example, a method may comprise estimating an exhaust pressure based on periodic waveform outputs of an exhaust air/fuel ratio (AFR) sensor, and adjusting at least one engine operating parameter based on the estimated exhaust pressure. The exhaust pressure may be estimated based on one or more of the standard deviation and frequency of the periodic waveform outputs.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: July 17, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Douglas Raymond Martin, John Eric Rollinger, Richard E. Soltis, Jennifer Helen Chang
  • Patent number: 10018089
    Abstract: A diesel particulate filter system comprising: a temperature sensor on the inlet side of the diesel particulate filter; a temperature sensor on the outlet side of the diesel particulate filter; a pressure sensor on the inlet side of the diesel particulate filter; and a control module in communication with the temperature sensors and the pressure sensor, and the control module is loaded with a look-up table that correlates the amount of soot loaded in the diesel particulate filter to a change in pressure measured by the pressure sensor; wherein the control module Initiates a regeneration cycle when soot loading of the diesel particulate filter achieves a predetermined soot load.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 10, 2018
    Assignee: Dow Global Technologies LLC
    Inventor: Ashish Kotnis
  • Patent number: 9982584
    Abstract: A device for aftertreatment of exhaust gas includes: a prechamber having an exhaust gas inlet; a main chamber; a mixing device, in which the exhaust is mixable with an additive; and an intermediate device, via which a partial exhaust gas flow is deliverable from the prechamber to the mixing device. The intermediate device has swirl elements configured to reverse the direction of swirl of swirled exhaust gas flow generated in the prechamber as the exhaust gas overflows into the interior of the intermediate device, and/or the prechamber is configured to impel a first partial exhaust gas flow in a direction of swirl, and the main chamber is configured to impel a second partial exhaust gas flow from the prechamber in a direction of swirl, the direction of swirl of the exhaust gas in the prechamber being opposed to the direction of swirl of the exhaust gas in the main chamber.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 29, 2018
    Assignee: MAN Truck & Bus AG
    Inventors: Maximilian Püschel, Herbert Albert
  • Patent number: 9962653
    Abstract: A catalyzed particulate filter that includes: at least one inlet channel extending in a longitudinal direction, one end of which lets fluid in, and the other end of which is blocked; at least one outlet channel extending in the longitudinal direction, one end of which is blocked and the other end of which lets the fluid out; at least one porous wall that defines the boundary between neighboring inlet and outlet channels and that extends in the longitudinal direction; and a support with a catalyst coating thereon.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 8, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Pyung Soon Kim, Chang Ho Jung, Chang Hwan Kim
  • Patent number: 9920676
    Abstract: A mixer for an emissions cleaning module is provided. The mixer having an elongate body configured for location within a flowhood and a downstream conduit of an emissions cleaning module. A plurality of apertures are included in the mixer and configured to permit passage of exhaust gas therethrough, to promote mixing, in use of an injected additive and a flow of exhaust gas. An emissions cleaning module including such a mixer is also described.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: March 20, 2018
    Assignee: Perkins Engines Company Limited
    Inventors: Susannah Freeman, Anton Zimmermann, Andrew Keen, David Heaton, Christopher Petto
  • Patent number: 9890684
    Abstract: A method and a device for operating an exhaust gas aftertreatment, wherein a diesel particulate filter is regenerated during the operation, in particular passively regenerated, wherein a corrected differential pressure is calculated from a current differential pressure across the diesel particulate filter at a current exhaust gas volumetric flow rate and with a current correction factor. The current correction factor is determined by determining a lower differential pressure in a predetermined time interval at a defined exhaust gas volumetric flow rate, in particular in a specified exhaust gas volumetric flow rate interval around the defined exhaust gas volumetric flow rate, and comparing the lower differential pressure with a specified current reference value and, depending thereon, calculating a new correction factor or retaining the previous correction factor as the current correction factor.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 13, 2018
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Andrea Prospero, Tim Späder, Stefan Merk
  • Patent number: 9869230
    Abstract: An end cap module for a vehicle exhaust system is comprised of an outer skin and inner skin that cooperate to define an internal cavity. The outer skin includes a mount interface configured for attachment to a vehicle structure. A cast internal sub-structure is mounted within the internal cavity. The inner skin positioned within the internal cavity such that the cast internal sub-structure is positioned between the inner skin and the outer skin.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 16, 2018
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventor: Jerome Brian Hornback
  • Patent number: 9816422
    Abstract: A flowhood is provided to which an upstream conduit and a downstream conduit of an emissions cleaning module can be connected includes a first section and a second section. The second section includes a first aperture for connection to the upstream conduit and a second aperture for connection to the downstream conduit. The first and second apertures may face substantially in the same direction to permit a compact arrangement. A body of the first section may be shaped to channel gas flow from the first aperture to the second aperture. An emissions cleaning module including such a flowhood is also described.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: November 14, 2017
    Assignee: Perkins Engines Company Limited
    Inventors: Susannah Freeman, Anton Zimmermann, Andrew Keen, David Heaton, Christopher Petto
  • Patent number: 9790828
    Abstract: The risk of a particulate filter from being damaged is reduced while an increase in pressure loss of the particulate filter due to ash is suppressed. Micropore zones are defined at upstream sides of partition walls of a particulate filter and macropore zones are defined at downstream sides of partition walls. The pore size of the partition walls at the micropore zones is set so that the particulate matter and the ash can be trapped by the partition walls at the micropore zones, while the pore size of the partition walls at the macropore zones is set so that the ash can pass through the partition walls at the macropore zones. When the difference dQPM between the quantity of the particulate matter which is trapped at the micropore zones and the quantity of particulate matter which is trapped at the macropore zones exceeds a predetermined threshold value, PM removal control is executed.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 17, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daichi Imai, Kazuhiro Itou, Hiromasa Nishioka
  • Patent number: 9752478
    Abstract: An engine device of a working vehicle is structured such that a first case and a second case can be firmly fixed with a high rigidity by making good use of a frame of an engine room. In the engine device of the working vehicle having the first case which removes particulate matter in exhaust gas of the engine and the second case which removes nitrogen oxide in the exhaust gas of the engine, the first case is provided in the engine room which is inward provided with the engine, via a first case support body, and the second case is provided in the engine room via second case support bodies.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 5, 2017
    Assignee: Yanmar Co., Ltd.
    Inventors: Yoshiyuki Sandou, Tomoyuki Kimura
  • Patent number: 9732650
    Abstract: An exhaust gas purification apparatus includes: a reduction catalyst converter that reduces and purifies nitrogen oxides in exhaust gas; a tank that stores a liquid reducing agent or precursor thereof; and an injection nozzle that injects the liquid reducing agent or precursor thereof stored in the tank on an exhaust gas upstream side of the reduction catalyst converter. Some of the exhaust gas flowing through an exhaust pipe is diverted to the tank by a bypass pipe, to cause an exchange of heat between the diverted exhaust gas and the liquid reducing agent or precursor thereof stored in the tank, thereby thawing the liquid reducing agent or precursor thereof frozen in the tank.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: August 15, 2017
    Assignee: UD Trucks Corporation
    Inventor: Yasuyoshi Tomita
  • Patent number: 9719399
    Abstract: In a method of operating an exhaust emission control device, the presence of an actual pressure loss of a particulate filter is determined, and a model pressure loss is determined as a function of a state variable. On the basis of the actual pressure loss and the model pressure loss a pressure quotient is determined and a condition of the particulate filter is ascertained in a diagnostic mode in response to the pressure quotient.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 1, 2017
    Assignee: AUDI AG
    Inventor: Bodo Odendall
  • Patent number: 9714625
    Abstract: A system according to the principles of the present disclosure includes an air/fuel ratio determination module and an emission level determination module. The air/fuel ratio determination module determines an air/fuel ratio based on input from an air/fuel ratio sensor positioned downstream from a three-way catalyst that is positioned upstream from a selective catalytic reduction (SCR) catalyst. The emission level determination module selects one of a predetermined value and an input based on the air/fuel ratio. The input is received from a nitrogen oxide sensor positioned downstream from the three-way catalyst. The emission level determination module determines an ammonia level based on the one of the predetermined value and the input received from the nitrogen oxide sensor.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: July 25, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Min Sun, Kevin L. Perry, Donovan L. Dibble, Chang H. Kim, Mary Beth Furness
  • Patent number: 9707525
    Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 18, 2017
    Assignee: DONALDSON COMPANY, INC.
    Inventors: Korneel De Rudder, Stéphane Le Merdy
  • Patent number: 9695730
    Abstract: An exhaust gas purifying apparatus includes an oxidative catalyst and a filter that are disposed in an exhaust gas path of an engine; a fuel injecting device that injects fuel according to a fuel injection pattern; and a control device that estimates a deposition amount of a particulate matter and sets the fuel injection pattern. When the fuel injection pattern including post-injection is set to recover the filter, the fuel injection pattern is set such that a post-injection amount is reduced as the deposition amount increases.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: July 4, 2017
    Assignee: Yanmar Co., Ltd.
    Inventors: Katsunari Jonouchi, Tomohiro Fukuda, Yusuke Amari
  • Patent number: 9689330
    Abstract: A power system may include a first generator configured to be connected to at least one other generator. Each generator may be configured to be connected to a bus. The bus may be connected to at least one load. The first generator includes a controller that operates the first generator and determines a need to regenerate a diesel particulate filter in the first generator. The controller communicates the need to regenerate the diesel particulate filter to the at least one other generator.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: June 27, 2017
    Assignee: Kohler Co.
    Inventors: Douglas W. Dorn, Isaac S. Frampton
  • Patent number: 9683507
    Abstract: A system includes an internal combustion ignition engine with an exhaust gas flow, a particulate filter in the exhaust gas flow, a NOx reduction catalyst in the exhaust gas flow downstream of the particulate filter, a first oxygen sensor coupled to the exhaust gas flow downstream of the NOx reduction catalyst, and a second oxygen sensor coupled to the exhaust gas flow between the particulate filter and the NOx reduction catalyst. A controller includes an exhaust conditions module that interprets a first oxygen signal from the first oxygen sensor and a second oxygen signal from the second oxygen sensor and a combustion control module that commands a high engine-out air-fuel ratio when the first oxygen signal indicates a low oxygen content and commands a low engine-out air-fuel ratio when the first oxygen signal indicates a high oxygen content.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: June 20, 2017
    Assignee: Cummins Inc.
    Inventors: Aleksey Yezerets, Timothy R. Frazier, Marten H. Dane, Samuel C. Geckler, Govindarajan Kothandaraman
  • Patent number: 9683535
    Abstract: Methods and systems are provided for inferring spark plug fouling due to accumulation of fuel additives thereon. In one example, an engine controller may infer spark plug hot fouling based on higher than expected exhaust temperatures by correlating the elevated exhaust temperature with late combustion phasing due to additive accumulation. A confidence factor of the spark plug hot fouling detection may be enhanced based on data regarding concurrent misfire and/or pre-ignition events.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 20, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Garlan J. Huberts, Nelson William Morrow
  • Patent number: 9670811
    Abstract: A dosing and mixing arrangement is disclosed herein. The arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: June 6, 2017
    Assignee: DONALDSON COMPANY, INC.
    Inventors: Korneel De Rudder, Corine Chauvin
  • Patent number: 9631532
    Abstract: Provided is an engine device of a working vehicle structured such that a first case and a second case can be firmly fixed with a high rigidly by sharing supporting loads of the first case and the second case by an engine room and a working portion. In the engine device of the working vehicle having the first case which removes particulate matter in exhaust gas of an engine, and the second case which removes nitrogen oxide in the exhaust gas of the engine, the first case is provided in an outer side of the engine room which is inward provided with the engine via a first case support body, and the second case is provided in the working portion which is adjacent to the engine room via a second case support body.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 25, 2017
    Assignee: Yanmar Co., Ltd.
    Inventors: Yoshiyuki Sandou, Tomoyuki Kimura
  • Patent number: 9624856
    Abstract: An exhaust gas purification system with a diesel particulate filter in an exhaust passage of an internal combustion engine. A surface filtration cake layer formation enhancement control or a particulate matter generation amount reduction control is temporarily performed immediately after a forced regeneration treatment on the diesel particulate filter. The system and a method are directed to a particulate matter slip-through phenomenon in which the particulate matter slip-through amount temporarily increases immediately after particulate matter re-combustion in a forced regeneration treatment on the diesel particulate filter. The diesel particulate filter is disposed in the exhaust passage of the internal combustion engine and reduces the total amount of particulate matter emitted to the atmosphere immediately after the particulate matter re-combustion in the forced regeneration treatment on the diesel particulate filter.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: April 18, 2017
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiji Nagaoka, Takayuki Sakamoto
  • Patent number: 9599005
    Abstract: An apparatus, system, and method are provided for determining a health value of a catalyzed diesel particulate filter using a midbed temperature of the catalyzed diesel particulate filter and a reference temperature.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: March 21, 2017
    Assignee: Cummins Inc.
    Inventors: Nassim Khaled, Richard A. Booth
  • Patent number: 9574474
    Abstract: A diesel engine aftertreatment system comprises a diesel engine having an exhaust manifold and a filter substrate in direct connection with the exhaust manifold without any intervening catalyst, wherein the filter substrate comprises on its inlet side an SCR catalyst incorporating a non-coking molecular sieve.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: February 21, 2017
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Daniel Swallow
  • Patent number: 9568214
    Abstract: The present invention may be embodied as a biofuel heating system comprising a controller for operating a fan based on a load operating parameter such that air flows along a flow path extending through a combustion chamber, through a burn-out port, through a burn-out chamber, through a heat exchange port, through a heat exchange chamber, and out of an exhaust port. A heat exchange system transfers heat energy from air flowing through the heat exchange chamber to a working fluid. The controller operates in a char mode based at least in part on the load operating parameter, and the biofuel remains within the combustion zone during the char mode.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: February 14, 2017
    Assignee: GREENWOOD CLEAN ENERGY, INC.
    Inventors: David S. Sharpe, Michael R. Kuehner, Douglas S. Denton, Bryan J. Louviere
  • Patent number: 9562453
    Abstract: An internal combustion engine comprises a hydrocarbon feed valve (15) arranged in an engine exhaust passage and a booster pump (60) for boosting an injection pressure of the hydrocarbon feed valve (15). The hydrocarbon feed valve (15) performs NOX removal injection and clogging prevention injection. A boosting action of the injection pressure by the booster pump (60) and the NOX removal injection are controlled so that the boosting action of the injection pressure by the booster pump (60) and the NOX removal injection are not performed simultaneously, and the boosting action of the injection pressure by the booster pump (60) and said clogging prevention injection are allowed to be performed simultaneously.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: February 7, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yuki Bisaiji
  • Patent number: 9517436
    Abstract: An internal combustion engine wherein an exhaust purification catalyst and hydrocarbon feed valve are arranged in an engine exhaust passage and wherein the NOX which is contained in the exhaust gas is removed by injection of hydrocarbons from the hydrocarbon feed valve by a predetermined period. Hydrocarbons are injected from the hydrocarbon feed valve toward the upstream side of the engine exhaust passage. When hydrocarbons are injected from the hydrocarbon feed valve by a predetermined period, the injection pressure of the hydrocarbons is made to gradually fall from injection start to injection end in the injection time period of each injection.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: December 13, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Bisaiji, Kohei Yoshida, Mikio Inoue, Kohki Nakamura
  • Patent number: 9512760
    Abstract: An aftertreatment system for an engine is disclosed. The aftertreatment system may include an exhaust passage configured to receive an exhaust flow from the engine, and an injector disposed in the exhaust passage and configured to inject reductant into the exhaust flow. The aftertreatment system may also include a bypass conduit fluidly connected to the exhaust passage downstream of the injector, at least one valve disposed in the bypass conduit and configured to divert exhaust gases from the exhaust passage into the bypass conduit, and a reductant storage device disposed in the bypass conduit and configured to store ammonia in the exhaust gases. The aftertreatment system may also include a control module configured to selectively operate the at least one valve.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: December 6, 2016
    Assignee: Caterpillar Inc.
    Inventors: Robert Dale Clayton, Jr., Thomas Edward Paulson
  • Patent number: 9468889
    Abstract: An exhaust gas treatment system includes an exhaust line through which exhaust gas flows. A nitrogen oxide purification catalyst is disposed at one side of the exhaust line to reduce the nitrogen oxide. A diesel particulate filter is disposed at a downstream side of the nitrogen oxide purification catalyst, filters a particulate material, and eliminates the material in a set condition, wherein a set amount of oxygen storage material is included in the diesel particulate filter.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: October 18, 2016
    Assignee: Hyundai Motor Company
    Inventors: Sungmu Choi, Hyokyung Lee
  • Patent number: 9464546
    Abstract: The assembly for purification of exhaust gases comprises an upstream conduit and a downstream conduit positioned parallel to each other. A space has an exhaust gas inlet communicating with the upstream conduit and an exhaust gas outlet communicating with the downstream conduit. A middle line divides the inlet into first and second areas providing a same passage section to the exhaust gases. The assembly comprises a baffle covering at least 75% of the first area and covering less than 25% of the second area. The baffle and the space are laid out so that a portion of the exhaust gases penetrate through the first area of the inlet flows into the space along flow lines forming a cusp around the baffle.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: October 11, 2016
    Assignee: Faurecia Systemes D'Echappement
    Inventors: Yohann Perrot, Jean-Paul Brunel