-
公开(公告)号：US12025070B2
公开(公告)日：2024-07-02
申请号：US18534627
申请日：2023-12-09
CPC分类号： F02D41/0245 , F02B19/12 , F02D13/0249 , F02D41/008 , F02D41/024 , F02P5/1504
摘要： A method of heating a catalytic converter of an internal combustion engine, wherein the method comprises the steps of: igniting the gas charge in one of the cylinders in a range from 10° CA before ignition top dead center to 20° CA after ignition top dead center; and opening the exhaust valve of the cylinder exhaust of the cylinder in a range from 30° CA to 55° CA after ignition top dead center. The method allows the catalytic converter of the internal combustion engine to quickly reach operating temperature and thus contributes to the reduction of pollutant emissions. An internal combustion engine is also provided that is designed to carry out the method of the invention for heating a catalytic converter.
-
公开(公告)号：US11905903B2
公开(公告)日：2024-02-20
申请号：US17382695
申请日：2021-07-22
CPC分类号： F02D41/068 , B61C17/00 , F02D41/008 , F02D41/0082 , F02D41/04 , F02D2200/10
摘要： Methods and systems are provided for operating an engine having a plurality of cylinders that utilize oil for lubrication purposes. In one embodiment, a method for the engine may include determining if one or more conditions have been met for port heating based on one or more operating conditions of the engine, continuing current operation if the one or more conditions for port heating have not been met, and determining a souping level of the engine if the one or more conditions for port heating have been met and subsequently running port heating on a set of cylinders of the engine based on the souping level of the engine and/or the one or more conditions for port heating. The engine may be a non-EGR engine and/or a high speed diesel engine. Each cylinder of the set of cylinders may have at least one port.
-
公开(公告)号：US20240052794A1
公开(公告)日：2024-02-15
申请号：US18366228
申请日：2023-08-07
发明人： Shinnosuke HONDA , Yoshinori FUJITAKE , Suguru KUMAZAWA , Motohiko TANIYAMA , Keita SATO , Yuki IIZAWA , Yoshiyuki SHOGENJI , Yasutaka TSUCHIDA
CPC分类号： F02D17/02 , F02D41/008 , F02D41/26
摘要： A vehicle control system, a vehicle control method, and a storage medium are provided. A stopping process stops fuel supply to one or more stopping cylinders and supplies fuel to one or more remaining cylinders during a load operation of an engine. During execution of the stopping process, a compensating process compensates for a decrease in output of the one or more stopping cylinders due to the execution of the stopping process by increasing output generated by combustion in the one or more remaining cylinders. The system control circuit causes, when the engine rotation speed of the engine is the same, the output after being increased by the compensating process to decrease as a shaft torque of the crankshaft of the engine increases.
-
公开(公告)号：US20230407800A1
公开(公告)日：2023-12-21
申请号：US18027503
申请日：2021-08-27
申请人： Hitachi Astemo, Ltd.
发明人： Kunihiko SUZUKI
CPC分类号： F02D41/008 , F02D41/0002 , F02D41/0052 , F02D2200/101 , F02D41/2464 , F02D2200/0408 , F02D41/22
摘要： Provided is an electronic control device that controls an engine including an EGR system that includes an EGR pipe and an EGR valve disposed in the EGR pipe, an air flow sensor provided in an intake pipe, a throttle valve on a downstream side of the air flow sensor, and an intake pipe pressure sensor that detects an intake pipe pressure. The electronic control device includes a state estimation unit that estimates the intake pipe pressure and an EGR rate based on at least a detection value from the air flow sensor and an EGR valve opening, and an estimation value correction unit that corrects an EGR rate estimation value from the state estimation unit based on a detection value from the intake pipe pressure sensor and an intake pipe pressure estimation value from the state estimation unit.
-
公开(公告)号：US20190195736A1
公开(公告)日：2019-06-27
申请号：US16181539
申请日：2018-11-06
发明人： Dong-Hoon Lee
CPC分类号： G01M15/11 , F02D41/008 , F02D41/1454 , F02D41/1495
摘要： A method for diagnosing deviation of an air-fuel ratio between cylinders using an oxygen sensor roughness, the method may include a diagnosis condition determination step, an oxygen sensor roughness determination activation step, an oxygen sensor roughness level determination step, an air-fuel ratio deviation detection step, and a failure reporting step.
-
公开(公告)号：US20190170072A1
公开(公告)日：2019-06-06
申请号：US16190365
申请日：2018-11-14
发明人： Yuya YOSHIKAWA , Isao Nakajima , Akihiro Katayama , Ryo Suzuki , Sohichi Imai , Eiichiro Kido
CPC分类号： F02D41/008 , F02D41/1408 , F02D41/1475 , F02D41/1497 , F02D41/1498 , F02D41/2458 , F02D41/263 , F02D41/38 , F02D41/401 , F02D2200/0614 , F02D2200/1002 , F02D2200/1015 , F02P5/045 , F02P5/15 , F02P5/1502
摘要： A first limit requesting process limits a dither control process of fuel injection valves in such a manner that the absolute value of the difference between the air-fuel ratios of the cylinders becomes smaller when the degree of variation of the injection amounts of the fuel injection valves provided for respective cylinders is great than when the degree of variation is small. A second limit requesting process limits the dither control process in such a manner that the absolute value is smaller when the torque fluctuation amount of the internal combustion engine is great than when the torque fluctuation amount is small. The limiting process limits the dither control process in accordance with one of requests generated by the first limit requesting process and the second limit requesting process that causes the absolute value to be smaller than the other.
-
公开(公告)号：US20190063349A1
公开(公告)日：2019-02-28
申请号：US16011873
申请日：2018-06-19
申请人： Cummins Inc.
CPC分类号： F02D41/0052 , F02D21/08 , F02D41/0072 , F02D41/008 , F02D41/0082 , F02D41/045 , F02D41/12 , F02D41/38 , F02D2041/0075 , F02D2041/389 , F02M26/43
摘要： Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary exhaust gas recirculation (EGR) cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the fueling to the at least one primary EGR cylinder in response to EGR fraction reduction conditions.
-
公开(公告)号：US20190032589A1
公开(公告)日：2019-01-31
申请号：US16061241
申请日：2016-12-22
CPC分类号： F02D41/22 , F02B19/1004 , F02D35/021 , F02D35/027 , F02D41/0007 , F02D41/0027 , F02D41/008 , F02D41/1446 , F02D41/1454 , F02D41/1498 , F02D2041/224 , F02D2200/1015 , F02P17/12 , F02P2017/125 , Y02T10/144 , Y02T10/40
摘要： Internal combustion engine (1) with a controller (2) and at least one combustion chamber (3) and an at least one ignition amplifier (4) associated with the combustion chamber (3), whereby the at least one combustion chamber (3), on the one hand via a feeding device (5) for a fuel-air mixture, can be supplied with energy, and on the other hand can be supplied with energy by the associated ignition amplifier (4), whereby the controller (2) is designed to change the excess-air ratio (λ) of the fuel-air mixture in a detection mode for the at least one combustion chamber (3), and at least one sensor (6) is provided, whose signals can be supplied to the controller (2) and whose signals are characteristic of the combustion event in at least one combustion chamber (3) and that the controller (2) is designed such that, depending on the signals supplied by at least one sensor (6), a representative detection signal is generated associated with a status of the at least one ignition amplifier (4) associated with at least one combustion chamber (3).
-
公开(公告)号：US20180283306A1
公开(公告)日：2018-10-04
申请号：US15527060
申请日：2015-09-18
发明人： Ryo KUSAKABE , Tomoaki HORII , Shingo KIMURA , Takaki ITAYA , Mitsuru NAGASE , Shirou YAMAOKA
CPC分类号： F02D41/20 , F02D41/008 , F02D41/3809 , F02D41/401 , F02D41/402 , F02D2041/2003 , F02D2041/2017 , F02D2041/2027 , F02D2041/2051 , F02D2041/2082 , F02D2041/389 , F02D2200/0602 , F02M51/061 , Y02T10/44
摘要： The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases. This drive device for a fuel injection device is equipped with a function whereby, when the pulse width of the injection pulse is set to an energization time 815 that closes a valve after a drive current has been switched to a maintenance current, the injection pulse width when the voltage of a high-voltage source has decreased is corrected so as to be longer than the injection pulse width when the voltage of the high-voltage source has not decreased, and, when the pulse width of the injection pulse is set to an energization time 804′ that closes the valve before the drive current has been switched to the maintenance current, the absolute value of the amount of correction of the injection pulse width is made smaller than when the injection pulse width is set to the energization time 815 that closes the valve after the drive current has been switched to the maintenance current.
-
公开(公告)号：US10012156B2
公开(公告)日：2018-07-03
申请号：US15051349
申请日：2016-02-23
申请人： Robert Bosch GmbH
发明人： Martin Rauscher , Andreas Roth , Raffael Hedinger , Wolfgang Fischer , David Gaenzle , Christopher H. Onder
CPC分类号： F02D35/024 , F02D35/023 , F02D41/008 , F02D41/009 , F02D41/2432 , G01M15/08
摘要： A method for determining a signal offset between a crankshaft angle signal and a combustion chamber pressure signal includes: measuring the combustion chamber pressure signal; shifting an alignment of the measured combustion chamber pressure signal with respect to the crankshaft angle signal by a plurality of respective offset angles to generate a plurality of offset combustion chamber pressure signals; reconstructing the offset combustion chamber pressure signals using a plurality of predetermined inherent pressure curves to generate reconstructed combustion chamber pressure signals; determining reconstruction errors of the reconstructed combustion chamber pressure signals as a function of differences between the offset combustion chamber pressure signals and the reconstructed combustion chamber pressure signals; and determining the signal offset between the crankshaft angle signal and the combustion chamber pressure signal as a one of the plurality of offset angles producing the reconstruction error having the lowest value.
-
-
-
-
-
-
-
-
-
搜索结果
1258 条记录 (耗时 0.021 秒)
