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公开(公告)号：US20210215116A1
公开(公告)日：2021-07-15
申请号：US17218049
申请日：2021-03-30
摘要： Systems and methods for estimating an engine event location are disclosed herein. In one embodiment, a control system is configured to receive feedback from at least one vibration sensor coupled to a reciprocating engine, estimate an engine parameter based at least on the feedback and an Empirical Transform Function (ETF), estimate a location of an engine event based on the engine parameter, and adjust operation of the reciprocating engine based at least on the location of the engine event.
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公开(公告)号：US11060464B2
公开(公告)日：2021-07-13
申请号：US16271652
申请日：2019-02-08
摘要： Systems and methods for operating an internal combustion engine are described. In one example, an engine's position is adjusted during engine stopping so that the engine may be less likely to stop at a crankshaft angle where rotating a fuel pump may increase engine cranking torque due to work performed by the fuel pump.
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公开(公告)号：US11028787B2
公开(公告)日：2021-06-08
申请号：US16430481
申请日：2019-06-04
申请人： Taketo Nagasaki , Daijiro Tanaka , Kouji Takasu
发明人： Taketo Nagasaki , Daijiro Tanaka , Kouji Takasu
摘要： The center injection engine is an engine equipped with the direct injector and an ignition apparatus at center of a ceiling part of the combustion chamber. The positive tumble flow flows from the intake port side to the exhaust port side on the ceiling part side of the combustion chamber, and also flows from the exhaust port side to the intake port side on the piston top part side. The ECU calculates the injection timing of the direct injector based on the engine load. In the first injection control, the higher the engine load becomes, the more the end crank angle is retarded.
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公开(公告)号：US20210148323A1
公开(公告)日：2021-05-20
申请号：US16949742
申请日：2020-11-12
申请人： Caterpillar Inc.
摘要： A controller for a dedicated exhaust gas recirculation (D-EGR) engine is disclosed. The controller may receive a plurality of cylinder pressure signals, each of which is associated with a respective cylinder in a plurality of cylinders of the D-EGR engine. The plurality of cylinders includes at least one donor cylinder and a set of non-donor cylinders. The controller may receive a crankshaft angle signal associated with a crankshaft of the D-EGR engine. The controller may selectively adjust ignition timing of a cylinder, of the plurality of cylinders, based on the crankshaft angle signal and a cylinder pressure signal, of the plurality of cylinder pressure signals, associated with the cylinder; or a fuel rate of the at least one donor cylinder based on the crankshaft angle signal and a set of cylinder pressure signals, of the plurality of cylinder pressure signals, associated with the set of non-donor cylinders.
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公开(公告)号：US10982616B2
公开(公告)日：2021-04-20
申请号：US16640143
申请日：2018-08-23
发明人： Atsushi Inoue , Masanari Sueoka , Yusuke Kawai , Tetsuya Chikada
IPC分类号： F02D41/30 , F02B11/02 , F02B23/02 , F02B23/10 , F02D13/02 , F02D41/00 , F02D41/40 , F02P5/04 , F02P5/15 , F02D15/00 , F02M26/23 , F02D41/38
摘要： When the geometric compression ratio of an engine body is set to 13:1 or more and the engine body operates in a preset high load region, the effective compression ratio of the engine body is set to 12:1 or more with a difference from the geometric compression ratio being within 2, a gas to be introduced into a combustion chamber is supercharged by a supercharging system, fuel is injected at least in a compression stroke by an injector, and after the fuel injection is finished, an air-fuel mixture in the combustion chamber is ignited by an ignition device before the compression top dead center and is thus burned by flame propagation in the engine body, and then the unburned air-fuel mixture is burned by compression ignition.
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公开(公告)号：US10975828B2
公开(公告)日：2021-04-13
申请号：US15985428
申请日：2018-05-21
IPC分类号： F02P5/152 , F02D35/02 , F02D41/00 , F02D17/02 , F02P9/00 , F01L13/00 , F02D13/06 , F02D41/40 , F02P5/04
摘要： Methods and systems are provided for operating a variable displacement engine that includes a knock control system. Engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are deactivated to determine the presence or absence of engine knock. Additionally, engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are reactivated such that the engine operates with all cylinder combusting so that the possibility of indicating knock when knock is not present may be avoided.
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公开(公告)号：US10961942B2
公开(公告)日：2021-03-30
申请号：US16329695
申请日：2016-08-31
摘要： Systems and methods for estimating an engine event location are disclosed herein. In one embodiment, a control system is configured to receive feedback from at least one knock sensor coupled to a reciprocating engine, estimate an engine parameter based at least on the feedback and an Empirical Transform Function (ETF), estimate a location of an engine event based on the engine parameter, and adjust operation of the reciprocating engine based at least on the location of the engine event.
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公开(公告)号：US10961934B2
公开(公告)日：2021-03-30
申请号：US16678913
申请日：2019-11-08
发明人： Jae-Min Jin , Seung-Hyun Lee , In-Soo Jung , Kyoung-Doug Min , Yong-Joo Lee , Seung-Il Lee
摘要： A method for controlling engine combustion may include receiving a signal of a crank position sensor, determining an angular velocity and an angular acceleration of a crank on the basis of the signal of the crank position sensor, determining a combustion characteristic index for each cylinder using the angular velocity and the angular acceleration of the crank, judging an unstable combustion cylinder using the combustion characteristic index for each cylinder, and changing a combustion factor for controlling the unstable combustion cylinder.
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公开(公告)号：US20210071606A1
公开(公告)日：2021-03-11
申请号：US16562351
申请日：2019-09-05
发明人： John Paul Bogema , Joseph Goode , Kirk Andrew Parrish , Peter Mitchell Lyon , Sanket Anil Gujarathi , William Clifford Brown
摘要： Methods and systems are provided for regenerating an aftertreatment device of a vehicle. In one example, a method may include adjusting conditions of the regeneration in response to a stickiness of the exhaust valve. Adjusting conditions may include adjusting an air/fuel ratio and/or a post-injection amount.
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公开(公告)号：US10934989B2
公开(公告)日：2021-03-02
申请号：US16518237
申请日：2019-07-22
申请人： SUBARU CORPORATION
摘要： A vehicle control apparatus includes input-side and output-side rotating elements, a fuel injection controller, and an ignition timing controller. The ignition timing controller controls ignition timing of an engine to first timing on the condition that the engine is controlled from a fuel cut state to a fuel injection state, and afterwards, changes the ignition timing to second timing on advance side of the first timing. The ignition timing controller changes the ignition timing toward the second timing at a first change rate until a rotational acceleration rate of the output-side rotating element reaches a threshold. After the rotational acceleration rate of the output-side rotating element reaches the threshold, the ignition timing controller changes the ignition timing toward the second timing at a second change rate greater than the first change rate.
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