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公开(公告)号：US20240003324A1
公开(公告)日：2024-01-04
申请号：US18137129
申请日：2023-04-20
发明人： Atsushi YUI , Tomohiro NAKANO
CPC分类号： F02P5/045 , F02P5/1502 , F02D19/022 , F02D41/0027 , F02D41/401
摘要： The electronic control unit performs a retarding process of retarding the ignition timing when the fuel pressure decreases, and lowers the peak of the combustion pressure in the cylinder, thereby suppressing the inflow of the combustion gas to the injector. Further, the electronic control unit performs an increasing process of increasing the injection amount of the hydrogen gas together with the retarding process, thereby suppressing the torque decrease of the engine due to the retard of the ignition timing.
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2.发明授权公开(公告)号：US11680512B2
公开(公告)日：2023-06-20
申请号：US17794419
申请日：2020-12-09
发明人： Dietmar Bertsch
CPC分类号： F02B19/12 , F02D41/0035 , F02P5/045 , F02P5/1518 , F02P13/00 , F02D2041/389
摘要： A method for operating an internal combustion engine of a motor vehicle, where the internal combustion engine includes a combustion chamber and a prechamber spark plug which is assigned to the combustion chamber and which has a prechamber which is fluidically connected to the combustion chamber via a plurality of openings. The method includes operating the internal combustion engine in a catalytic converter heating operation in which an ignition time, at which an ignition spark for igniting a fuel-air mixture in the combustion chamber is generated in the prechamber within a particular operating cycle of the internal combustion engine, is shifted later compared to a normal operation. An injection time, at which a last direct fuel injection into the combustion chamber is carried out within the particular operating cycle, is a same in the catalytic converter heating operation and in the normal operation.
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公开(公告)号：US11655791B2
公开(公告)日：2023-05-23
申请号：US17596248
申请日：2020-08-14
申请人： Hitachi Astemo, Ltd.
发明人： Kunihiko Suzuki
摘要： Provided is an internal combustion engine control device capable of reducing a control error of the ignition timing as compared with the conventional technique. The internal combustion engine control device of the present disclosure includes a neural network model that receives three or more variables including at least a rotation speed, a load, and another specific variable of an internal combustion engine as inputs and outputs a control amount of the internal combustion engine. The neural network model includes a first neural network model having a reference value of the specific variable as an input and a second neural network model having a current value of the specific variable as an input. The internal combustion engine control device of the present disclosure corrects a reference value of the control amount calculated based on the rotation speed and the load using a difference or a ratio between the output of the first neural network model and the output of the second neural network model as a correction amount.
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公开(公告)号：US20230079934A1
公开(公告)日：2023-03-16
申请号：US17793550
申请日：2021-01-15
申请人： Hitachi Astemo, Ltd.
发明人： Kazuhiro ORYOJI , Yoshihiko AKAGI , Ryutaro KOIWAI
摘要： Provided is a control device of an internal combustion engine capable of increasing the temperature of a catalyst and the temperature of coolant more efficient1y than a conventional waste heat control device. A control device acquires a coolant temperature T_cw and a catalyst temperature T_cat of an exhaust system and controls an ignition timing θ of the internal combustion engine. The control device executes coolant heating control for increasing the energy distribution from the internal combustion engine to the coolant when the coolant temperature T_cw is equal to or less than a first threshold, and catalyst heating control for increasing the energy distribution from the internal combustion engine to the exhaust gas when the catalyst temperature T_cat is equal to or less than a second threshold.
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公开(公告)号：US11473654B2
公开(公告)日：2022-10-18
申请号：US17157890
申请日：2021-01-25
申请人： Defang Yuan
发明人： Defang Yuan
摘要： A crankshaft system is provided. The crankshaft has a main journal, a rod journal rotates around the main journal, a planet gear is attached to the rod journal and can rotate around the rod journal, the rotation of the planet gear is constrained by a constraining gear, the teeth number of the constraining gear is integer k times of the teeth number of the planet gear, a crankpin is mounted on the planet gear, one end of a connecting rod of a piston is attached to the crankpin, the constraining gear is a ring gear or a sun gear, the trajectory of the crankpin is noncircular. The combustion chamber volume keeps constant from 0° ATDC to 14° ATDC, or the minimum combustion chamber volume extends from TDC to 14° ATDC or after 14° ATDC.
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公开(公告)号：US20220316435A1
公开(公告)日：2022-10-06
申请号：US17596248
申请日：2020-08-14
申请人： Hitachi Astemo, Ltd.
发明人： Kunihiko SUZUKI
摘要： Provided is an internal combustion engine control device capable of reducing a control error of the ignition timing as compared with the conventional technique. The internal combustion engine control device of the present disclosure includes a neural network model that receives three or more variables including at least a rotation speed, a load, and another specific variable of an internal combustion engine as inputs and outputs a control amount of the internal combustion engine. The neural network model includes a first neural network model having a reference value of the specific variable as an input and a second neural network model having a current value of the specific variable as an input. The internal combustion engine control device of the present disclosure corrects a reference value of the control amount calculated based on the rotation speed and the load using a difference or a ratio between the output of the first neural network model and the output of the second neural network model as a correction amount.
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公开(公告)号：US11448146B2
公开(公告)日：2022-09-20
申请号：US16681418
申请日：2019-11-12
摘要： A method for starting an internal combustion engine (ICE) having a crankshaft and an electric turning machine (ETM) operatively connected to the crankshaft comprises energizing an absolute position sensor adapted for providing an indication of an angular position of a rotor of the ETM and applying a current to the ETM to generate a sufficient torque to rotate the crankshaft.
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公开(公告)号：US11326543B2
公开(公告)日：2022-05-10
申请号：US17051522
申请日：2019-04-17
发明人： Kota Matsumoto , Tomonori Urushihara , Keiji Maruyama , Masanari Sueoka , Ryohei Ono , Yuji Harada , Toru Miyamoto , Atsushi Inoue , Tatsuhiro Tokunaga , Takuya Ohura , Yusuke Kawai , Tomohiro Nishida , Keita Arai , Yodai Yamaguchi
IPC分类号： F02D41/30 , F02B5/00 , F02B9/02 , F02B31/06 , F02D13/02 , F02D41/40 , F02P5/04 , F02P5/15 , F02D41/38
摘要： The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Timing of the preceding ignition is more advanced when a swirl flow is gentle than when the swirl flow is strong.
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公开(公告)号：US11168639B2
公开(公告)日：2021-11-09
申请号：US17051546
申请日：2019-04-19
发明人： Kota Matsumoto , Tomonori Urushihara , Keiji Maruyama , Masanari Sueoka , Ryohei Ono , Yuji Harada , Toru Miyamoto , Atsushi Inoue , Tatsuhiro Tokunaga , Takuya Ohura , Yusuke Kawai , Tomohiro Nishida , Keita Arai , Yodai Yamaguchi
IPC分类号： F02P1/00 , F02D41/30 , F02P5/04 , F02P5/15 , F02D41/14 , F02P15/08 , F02B31/06 , F02D41/40 , F02B9/02 , F02D41/38
摘要： A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion in which an air-fuel mixture is subjected to CI combustion by self-ignition. The control apparatus creates a lean A/F environment where an air-fuel ratio as a ratio between air and fuel in a cylinder exceeds 20 and is lower than 35, or a lean G/F environment where a gas air-fuel ratio as a ratio between entire gas and the fuel in the cylinder exceeds 18 and is lower than 50 and the air-fuel ratio substantially matches a stoichiometric air-fuel ratio. Prior to planned timing of the CI combustion, in the lean A/F environment or the lean G/F environment, the control apparatus causes an ignition plug to generate a spark and to generate a high-temperature portion.
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公开(公告)号：US20210239067A1
公开(公告)日：2021-08-05
申请号：US17051546
申请日：2019-04-19
发明人： Kota MATSUMOTO , Tomonori URUSHIHARA , Keiji MARUYAMA , Masanari SUEOKA , Ryohei ONO , Yuji HARADA , Toru MIYAMOTO , Atsushi INOUE , Tatsuhiro TOKUNAGA , Takuya OHURA , Yusuke KAWAI , Tomohiro NISHIDA , Keita ARAI , Yodai YAMAGUCHI
摘要： A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion in which an air-fuel mixture is subjected to CI combustion by self-ignition. The control apparatus creates a lean A/F environment where an air-fuel ratio as a ratio between air and fuel in a cylinder exceeds 20 and is lower than 35, or a lean G/F environment where a gas air-fuel ratio as a ratio between entire gas and the fuel in the cylinder exceeds 18 and is lower than 50 and the air-fuel ratio substantially matches a stoichiometric air-fuel ratio. Prior to planned timing of the CI combustion, in the lean A/F environment or the lean G/F environment, the control apparatus causes an ignition plug to generate a spark and to generate a high-temperature portion.
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