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公开(公告)号：US12092043B2
公开(公告)日：2024-09-17
申请号：US18275817
申请日：2022-02-04
申请人： Isuzu Motors Limited
发明人： Satoshi Hanawa
CPC分类号： F02D13/0234 , F02D41/009 , F02D41/182 , F02D2200/0411
摘要： Provided are a control device for an internal combustion engine, wherein the internal combustion engine is provided with a crank mechanism for converting a reciprocating motion of a piston into a rotating motion of a crankshaft, a cylinder accommodating the piston, and an intake valve capable of opening and closing an inlet for sucking gas into the cylinder, and the control device is provided with: a volumetric efficiency calculating unit for calculating a volumetric efficiency representing a suction efficiency when gas is sucked into the cylinder, on the basis of a cylinder capacity when the intake valve is closed; a gas suction amount calculating unit for calculating a gas suction amount sucked into the cylinder, by means of a predetermined formula, on the basis of the calculated volumetric efficiency; and a control unit for controlling the internal combustion engine on the basis of the calculated gas suction amount.
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公开(公告)号：US12012906B2
公开(公告)日：2024-06-18
申请号：US18002728
申请日：2021-05-11
发明人： Yoshinari Tokunaga , Yuki Kasuya , Takano Nakai , Kenichiro Suzuki , Yoshiyuki Kamoyama , Toru Hirota
CPC分类号： F02D13/0215 , F02D13/0203 , F02D13/0223 , F02D13/0234 , F02D13/0242 , F02D13/0249 , F02D13/08 , F02D41/009 , F02D41/042 , F02D2041/001
摘要： A stop control device for an internal combustion engine is structured that stops the engine in a state suitable for starting and that does not cause a crank angle to change after the engine is stopped. A four-cycle internal combustion engine includes an electric valve opening and closing timing control device that sets an opening and closing timing of either or both of an intake valve and an exhaust valve. Stop control of stopping the internal combustion engine is performed when a stop signal for stopping the internal combustion engine is acquired, and post-stop phase control of displacing the opening and closing timing of the valve opening and closing timing control device in either an advancing direction or a retarding direction is performed after the internal combustion engine is stopped by the stop control.
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公开(公告)号：US20240175401A1
公开(公告)日：2024-05-30
申请号：US18493318
申请日：2023-10-24
发明人： Akira YAMASHITA
CPC分类号： F02D35/023 , F02D13/0234 , F02D41/0027 , F02D41/401 , F02P5/153
摘要： The ECM calculates a peak value of an in-cylinder pressure before ignition based on the operating state of the hydrogen engine. When the peak value of the in-cylinder pressure before ignition exceeds a threshold value, the ECM performs an advancement correction of the ignition timing such that the peak value becomes less than or equal to the threshold value.
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公开(公告)号：US20240117775A1
公开(公告)日：2024-04-11
申请号：US18275817
申请日：2022-02-04
申请人： Isuzu Motors Limited
发明人： Satoshi HANAWA
CPC分类号： F02D13/0234 , F02D41/009 , F02D41/182 , F02D2200/0411
摘要： Provided are a control device for an internal combustion engine, wherein the internal combustion engine is provided with a crank mechanism for converting a reciprocating motion of a piston into a rotating motion of a crankshaft, a cylinder accommodating the piston, and an intake valve capable of opening and closing an inlet for sucking gas into the cylinder, and the control device is provided with: a volumetric efficiency calculating unit for calculating a volumetric efficiency representing a suction efficiency when gas is sucked into the cylinder, on the basis of a cylinder capacity when the intake valve is closed; a gas suction amount calculating unit for calculating a gas suction amount sucked into the cylinder, by means of a predetermined formula, on the basis of the calculated volumetric efficiency; and a control unit for controlling the internal combustion engine on the basis of the calculated gas suction amount.
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公开(公告)号：US11852045B2
公开(公告)日：2023-12-26
申请号：US16767983
申请日：2017-11-29
发明人： Arne Andersson , David Carlson
CPC分类号： F01L1/3442 , F01L1/047 , F01L1/344 , F02D13/0234 , F02D13/0269 , F02D41/009 , F02D41/062 , F01L2800/00 , F01L2820/042 , F02D2200/0411
摘要： The present invention relates to a method for controlling an internal combustion engine arrangement (100). The internal combustion engine arrangement (100) comprises a combustion cylinder (102) and an inlet valve (106) arranged to be positioned in a closed position at a distance before a piston (104) reaches a bottom dead center during normal operation. The inlet valve is further controllable to be arranged in the open position until the piston reaches the bottom dead center if a required volumetric efficiency of the combustion cylinder is higher than a volumetric efficiency during normal operation.
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公开(公告)号：US11821374B2
公开(公告)日：2023-11-21
申请号：US16624356
申请日：2017-06-28
发明人： Kenji Suzuki , Ryouichi Ootaki , Yukiyo Yamada , Masashi Ono , Hiroshi Takada
CPC分类号： F02D15/02 , F02D13/0234 , F02D41/0007 , F02D41/1448 , F02D2041/001 , F02D2200/0406
摘要： An internal-combustion engine includes a variable compression ratio mechanism for changing a mechanical compression ratio, and a variable valve timing mechanism for changing the valve timing of an intake valve. When acceleration is demanded, a target compression ratio is set to a lower compression ratio than the target value in a normal condition, and the valve timing is set to the advance angle side. Since the allowable combustion pressure decreases in a prescribed intermediate compression ratio region, if an actual compression ratio exists in the prescribed intermediate compression ratio region in the course of a compression ratio change accompanying acceleration, the variable compression ratio mechanism restricts the intake pressure by increasing a degree of opening of a wastegate valve or reducing a degree of opening of a throttle valve, for example.
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公开(公告)号：US20230366360A1
公开(公告)日：2023-11-16
申请号：US18310082
申请日：2023-05-01
发明人： Koji OKAMURA , Kazuki TSURUOKA , Hitoshi MATSUNAGA
CPC分类号： F02D41/023 , F02D13/0234 , F02D41/0002 , F02D2041/001
摘要： The vehicle controller controls a vehicle. The vehicle includes a transmission and an internal combustion engine that has a variable valve actuation device. The vehicle controller includes an execution device. The execution device executes first and second gear ratio adjustment processes and first and second intake VVT adjustment processes. The first intake VVT adjustment process includes adjusting the intake valve timing such that the internal combustion engine is operated in an Atkinson cycle. The second intake VVT adjustment process includes setting the intake valve timing such that the closing timing of the intake valve is more advanced than in a case in which the first intake VVT adjustment process is executed.
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公开(公告)号：US20230313753A1
公开(公告)日：2023-10-05
申请号：US18104168
申请日：2023-01-31
发明人： Douglas Keith , Josef Thalhauser , Nikolaus Spyra
IPC分类号： F02D41/14 , F02B37/16 , F01N3/28 , F02B37/18 , F02B37/22 , F02D13/02 , F02D41/00 , F02D41/40 , F02P5/15
CPC分类号： F02D41/1448 , F01N3/2892 , F02B37/16 , F02B37/162 , F02B37/18 , F02B37/183 , F02B37/22 , F02D13/0234 , F02D41/0007 , F02D41/146 , F02D41/401 , F02P5/1502 , F02D2041/389
摘要： An internal combustion engine with an open-loop or closed-loop control device (2), wherein at least one combustion chamber (3) of the internal combustion engine (1) is designed to burn a fuel-air mixture using at least one combustion parameters that can be influenced by the open-loop or closed-loop control device (2), wherein the open-loop or closed-loop control device (2) has an emission control loop that is configured to actuate the at least one actuator that influences the at least one combustion parameter as a substitute parameter for NOx emissions by means of a functional relationship in such way that at last one combustion parameter can be set for each target or actual power rating of the internal combustion engine (1), wherein the functional relationship takes account of an influence of a change of the exhaust backpressure (p3’) affecting at least one combustion chamber (3).
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公开(公告)号：US11773804B2
公开(公告)日：2023-10-03
申请号：US17897058
申请日：2022-08-26
发明人： Yoshihisa Nou , Fumihiko Saito
CPC分类号： F02D41/401 , F02D13/0234 , F02D35/023 , F02D35/028 , F02D41/009 , F02D41/062 , F02D41/2477 , F02D2200/024 , F02D2200/0612
摘要： An engine controlling method is provided, which includes, during motoring of the engine, outputting, by an in-cylinder pressure sensor, to a controller a signal indicative of a reference pressure corresponding to a pressure change after an intake valve of a cylinder of the engine is closed when not performing fuel injection, and then injecting, by an injector, fuel for analysis into the cylinder at a specific timing after the intake valve is closed. The method includes, by the controller, acquiring a crank angle period from the intake valve close timing, through the fuel injection, to a timing of the in-cylinder pressure reaching the reference pressure based on signals from the in-cylinder pressure sensor and a crank angle sensor, and determining a property of the injected fuel by comparing the acquired crank angle period with that of a standard fuel based on stored information on a property of the standard fuel.
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公开(公告)号：US11698033B2
公开(公告)日：2023-07-11
申请号：US17449992
申请日：2021-10-05
申请人： Cummins Inc.
CPC分类号： F02D13/0234 , F01L1/047 , F01L1/18 , F01L1/24 , F01L2001/2444
摘要： A variable valve timing assembly is provided for extending a duration of an intake valve opening. The variable valve timing assembly includes an intake rocker mounted on a pedestal and operable by a cam lobe to open and close the intake valve. The intake rocker includes a lever extension, and a holding member in the pedestal is lockable in position by a hydraulic circuit in the pedestal to contact the lever extension of the intake rocker and hold the intake valve in the open position. A reset pin in the pedestal is actuatable by the cam lobe to release the holding member to allow the intake valve to close.
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