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公开(公告)号：US11536239B2
公开(公告)日：2022-12-27
申请号：US17530596
申请日：2021-11-19
申请人： Cummins Inc.
摘要： A method of controlling an ignitor for a spark-ignition engine includes receiving, by a controller, at least one of fuel quality data regarding a fuel for the spark-ignition engine or a characteristic regarding the ignitor for the spark-ignition engine. The method additionally includes controlling, by the controller, an ignition energy characteristic of the ignitor in response to the at least one of the fuel quality data regarding the fuel or the characteristic regarding the ignitor for the spark-ignition engine.
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公开(公告)号：US11512677B1
公开(公告)日：2022-11-29
申请号：US17689369
申请日：2022-03-08
申请人： Qun Wei , William P Attard , Shawali Chaudhury
发明人： Qun Wei , William P Attard , Shawali Chaudhury
摘要： A combustion control system and method for a turbulent jet ignition engine is presented. A controller is configured to receive a torque request, determine a target spark stagger based on a first spark from a first ignition device and a second spark from a second ignition device, determine an adjusted maximum brake torque (MBT) based on the spark stagger, determine a delta spark based on a difference between the adjusted MBT and an actual leading spark from the first and second ignition devices, determine a torque efficiency based on the delta spark, estimate an actual torque, and command a first and a second spark timing from the first and second ignition devices to satisfy the torque request.
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公开(公告)号：US11506168B2
公开(公告)日：2022-11-22
申请号：US17363397
申请日：2021-06-30
IPC分类号： F02P15/08 , F02B19/14 , F02D41/40 , F02F1/24 , F02B19/10 , F02B19/12 , F02B31/00 , F02P5/15 , F02P15/00 , F02P15/12
摘要： An internal combustion engine includes a combustion chamber with a cylinder head, a cylinder, and a piston. The internal combustion engine also includes at least one intake valve and at least one exhaust valve that are connected to the combustion chamber, a fuel injector that injects fuel into the combustion chamber, at least two ignition devices arranged in the combustion chamber, and control means that control the valves, the injector, and the ignition means. The control means operate the engine according to different combustion modes including a controlled ignition combustion mode, a compression ignition combustion mode, and an assisted compression ignition combustion mode. The control means activate the ignition means in the assisted compression ignition combustion mode.
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公开(公告)号：US11448156B2
公开(公告)日：2022-09-20
申请号：US17051596
申请日：2019-04-23
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： An engine control apparatus includes 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 a expansion stroke to initiate the 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 the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
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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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公开(公告)号：US10995726B2
公开(公告)日：2021-05-04
申请号：US15940366
申请日：2018-03-29
申请人： Woodward, Inc.
发明人： David C. Petruska , Sai Venkataramanan , Suraj Nair , Mark Notarfrancesco , Monte Wegner , Andy Vlietstra
IPC分类号： F02P17/12 , F02P17/10 , F02P3/045 , F02P3/08 , F02P3/05 , F02P5/15 , F02P9/00 , F02P15/08 , F02P17/02 , F02P3/01 , F02P11/06
摘要： The subject matter of this specification can be embodied in, among other things, a method that includes receiving a collection of measurements of electric current amplitude in a primary winding of an engine ignition system having the primary winding and a spark plug, identifying an ignition start time, identifying an inflection point based on the plurality of measurements, determining an inflection point time representative of a time at which the identified inflection point occurred, determining a spark start time based on an amount of time between the ignition start time and the inflection point time, and providing a signal indicative of the spark start time.
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公开(公告)号：US10539114B2
公开(公告)日：2020-01-21
申请号：US15900841
申请日：2018-02-21
申请人： DENSO CORPORATION
发明人： Naoto Hayashi , Makoto Toriyama , Kaori Doi , Kanechiyo Terada , Kenta Kyouda , Satoru Nakayama
摘要： An ignition apparatus inputs energy during a predetermined energy input period after the interruption of a primary electric current by an ignition switch and a discharge of an ignition plug caused by a secondary electric current. Moreover, the ignition apparatus includes a blow-off detection unit that detects, during the energy input period IGW after the start of the discharge by the ignition plug, occurrence of blow-off of the discharge. When the secondary electric current I2 drops below a blow-off detection electric current threshold value Ibo at a time instant tbo in a “second region” where it is impossible to perform a re-discharge after blow-off, the blow-off detection unit determines that blow-off has occurred and the ignition apparatus stops the energy input from an energy input unit to an ignition coil. By preventing unnecessary energy input, it is possible to suppress unnecessary electric power consumption and wear of electrodes of the ignition plug.
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公开(公告)号：US10443559B2
公开(公告)日：2019-10-15
申请号：US15574067
申请日：2016-04-20
发明人： Pasquale Forte , Stefano Silva , Eugenio Carugati
摘要： An electronic ignition system for an internal combustion engine. The system includes an ignition coil provided with a primary winding and a secondary winding, a switch that is connected to the primary winding and that is drivable to an open and/or closed position according to a value of a driving signal. A control unit is configured to drive the switch to the open and/or closed position based on the driving signal. A voltage changing electronic element is operatively interposed between an electrical connection and the primary winding and is configured to change the voltage value of the primary winding between at least a first and a second voltage value. The control unit is configured to generate the control signal and send the control signal to having the first value to the changing electronic element at least during a first charging interval of the primary winding.
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公开(公告)号：US10385819B2
公开(公告)日：2019-08-20
申请号：US15796339
申请日：2017-10-27
发明人： Thomas C. Marrs , Stephen P. Barlow
摘要： An ignition system for an internal combustion engine has a power source, a transformer having a first primary winding and a second primary winding and a secondary winding, a connector extending from the secondary winding so as to connect with a terminal of a spark plug, and a multi-strike circuit cooperative with the electronic spark timing circuit so as to fire the transformer with multiple strikes between the falling edge and the rising edge. A booster circuit is cooperative at the electronic spark timing circuit so as to collect and store energy from the power source while the electronic spark timing circuit fires the transformer. A delay circuit fires the transformer at a time subsequent to the falling edge and before the rising edge.
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