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公开(公告)号：US11732668B1
公开(公告)日：2023-08-22
申请号：US17650431
申请日：2022-02-09
IPC分类号： F02D41/22 , F02B75/22 , F02D41/00 , G01M15/11 , G01M15/10 , F01N13/10 , F02B75/18 , F02D41/14 , F02D41/28
CPC分类号： F02D41/22 , F01N13/107 , F02B75/22 , F02D41/009 , F02D41/1443 , F02D41/1498 , G01M15/104 , G01M15/11 , F02B2075/1832 , F02D2041/288 , F02D2200/1015
摘要： Methods and systems are provided for detection of cylinder misfire in an engine. In one example, a system may comprise a first cylinder and second cylinder of the engine having exhaust flows combined together in an exhaust system before being combined with other cylinders of the engine. The first cylinder and second cylinder may share an exhaust gas sensor mounted in the exhaust in a position to sense exhaust from the first cylinder and second cylinder, and being positioned before exhaust from other cylinders is combined with sensed exhaust from the first cylinder and second cylinder. The system may further include a control system with instructions stored therein to indicate detected misfire in one or more of the first and second sensors based on an output from the exhaust gas sensor.
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公开(公告)号：US11643989B2
公开(公告)日：2023-05-09
申请号：US17497984
申请日：2021-10-11
发明人： Hitoki Sugimoto
CPC分类号： F02D41/0087 , F02D41/1475 , F02D41/1498 , F02D41/38 , G01M15/11 , F02D2200/1015
摘要： A determination device for an internal combustion engine executes a partial fuel cut-off process. The determination device determines that exhaust gas characteristics have deteriorated when the misfire rate of the internal combustion engine is greater than or equal to a determination threshold. The determination device sets the determination threshold to a first determination threshold when the calculated misfire rate is a misfire rate in a period of non-execution of the partial fuel cut-off process. Also, the determination device sets the determination threshold to a second determination threshold, which is less than the first determination threshold, when the calculated misfire rate is a misfire rate in a period of execution of the partial fuel cut-off process.
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公开(公告)号：US20190234336A1
公开(公告)日：2019-08-01
申请号：US16034861
申请日：2018-07-13
发明人： Seung Bum KIM
CPC分类号： F02D41/22 , F02D41/0002 , F02D2041/227 , F02D2200/04 , F02D2200/0406 , F02D2200/0614 , F02D2200/1002 , F02D2200/1015 , F02D2200/503 , F02D2200/602 , F02N11/0818 , F02P5/145 , G06F16/283 , G06N20/00 , G07C5/008
摘要： A vehicle predictive control system based on big data includes: a vehicle terminal, which is installed in each of a plurality of vehicles, collecting status information related with an in-vehicle device in a corresponding vehicle to transmit the collected status information in real time, and transmitting problem occurrence information upon problem occurrence of the in-vehicle device; and a big data service provider classifying and storing the status information received from the vehicle terminal as big data, and obtaining a problem occurrence condition based on the status information to transmit information corresponding to the problem occurrence condition to the vehicle terminal when receiving the problem occurrence information of the in-vehicle device from the vehicle terminal of at least some vehicles among the plurality of vehicles.
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公开(公告)号：US20190128779A1
公开(公告)日：2019-05-02
申请号：US16179852
申请日：2018-11-02
IPC分类号： G01M15/11
CPC分类号： G01M15/11 , F02D41/0097 , F02D41/1498 , F02D2200/101 , F02D2200/1015
摘要： A misfire determination device includes: a combustion fluctuation canceled value acquisition unit that acquires a first combustion fluctuation canceled value corresponding to a first angle position and a second combustion fluctuation canceled value corresponding to a second angle position; a combustion fluctuation manifested value calculation unit that calculates a first fluctuation manifested value by removing the first combustion fluctuation canceled value from a rotation speed at the first angle position, and calculates a second fluctuation manifested value by removing the second combustion fluctuation canceled value from a rotation speed at the second angle position; a first-order difference calculation unit that calculates a first-order difference between the first fluctuation manifested value and the second fluctuation manifested value; and a specific cylinder misfire determination unit that determines a misfire in a specific cylinder by using the first-order difference.
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公开(公告)号：US09890758B2
公开(公告)日：2018-02-13
申请号：US15173374
申请日：2016-06-03
CPC分类号： F02P3/045 , F02D35/023 , F02D41/005 , F02D41/008 , F02D41/0097 , F02D2200/1015 , F02P3/0442 , F02P5/1516 , F02P17/12 , F02P2017/125 , Y02T10/47
摘要： A system and method for assessing the presence or absence of ignition coil degradation for an ignition system that includes two ignition coils for each spark plug. Ignition coil degradation may be determined without having to monitor ignition coils via specialized hardware circuitry. In one example, degradation of one or more ignition coils may be inferred from cylinder the presence or absence of cylinder misfire.
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公开(公告)号：US20180023486A1
公开(公告)日：2018-01-25
申请号：US15654285
申请日：2017-07-19
发明人： Yoshiyuki YAMASHITA
CPC分类号： F02D15/04 , F02B75/041 , F02D13/0238 , F02D13/0269 , F02D41/2422 , F02D2041/001 , F02D2200/0625 , F02D2200/101 , F02D2200/1015 , Y02T10/12 , Y02T10/142
摘要： A control device of an internal combustion engine 100 provided with a compression ratio control part controlling a mechanical compression ratio to a target compression ratio. The compression ratio control part is configured provided with an optimum compression ratio calculating part calculating an optimum compression ratio in an engine operating state based on the engine operating state, a permittable changed compression ratio calculating part calculating a permittable changed compression ratio giving an effect of improvement of the fuel efficiency even considering the amount of fuel consumed by driving a motor when the optimum compression ratio is higher than a target compression ratio, and a target compression ratio changing part changing the target compression ratio to the permittable changed compression ratio if the optimum compression ratio is higher than the target compression ratio and the optimum compression ratio becomes the permittable changed compression ratio or more.
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公开(公告)号：US20170356359A1
公开(公告)日：2017-12-14
申请号：US15181198
申请日：2016-06-13
CPC分类号： F02D41/0025 , F02D35/027 , F02D37/02 , F02D41/0225 , F02D41/16 , F02D41/221 , F02D41/26 , F02D41/3005 , F02D2200/1015 , F02M25/028 , F02M25/03 , F02M26/06 , F02P5/045 , F02P5/15 , F02P5/1504 , F02P5/1508 , F02P17/12
摘要： Methods and systems are provided for reducing a spark plug soot load and a combustion chamber soot load by controlling spark plug timing while injecting water or washer fluid. In one example, water or washer fluid is injected during a torque reduction while advancing spark timing so as to provide at least a portion of the torque reduction while opportunistically cleaning soot from the spark plug and combustion chamber. By reducing spark plug soot load, misfire occurrence is reduced, while pre-ignition occurrence is reduced by decarbonizing the combustion chamber.
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公开(公告)号：US09822711B2
公开(公告)日：2017-11-21
申请号：US14429202
申请日：2013-09-18
发明人： Akira Kiyomura
CPC分类号： F02D15/02 , F02D13/0226 , F02D41/0002 , F02D41/1447 , F02D2041/001 , F02D2200/0411 , F02D2200/0804 , F02D2200/101 , F02D2200/1015 , F02D2250/18 , F02P5/152 , F02P5/153 , Y02T10/12 , Y02T10/18 , Y02T10/42 , Y02T10/46
摘要： The present invention relates to a control device and a control method for an internal combustion engine equipped with a variable compression ratio mechanism. The control device sets an air charging efficiency as an engine load equivalent value and performs setting of a determination value used for misfire diagnosis, setting of an ignition timing, an estimation of a catalyst temperature, or the like. In the control device, when a compression ratio is higher than the basic compression ratio, and the theoretical thermal efficiency is high, the air charging efficiency is corrected to be increased, to perform the control on the basis of the corrected air charging efficiency. Furthermore, in a torque control that sets a target air charging efficiency on the basis of a torque command value, when the compression ratio is higher than the basic compression ratio, the target air charging efficiency is reduced.
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公开(公告)号：US20170328333A1
公开(公告)日：2017-11-16
申请号：US15150796
申请日：2016-05-10
CPC分类号： F02P5/152 , F02D35/027 , F02D35/028 , F02D41/1497 , F02D41/1498 , F02D2041/389 , F02D2200/1015 , F02P17/12 , F02P2017/128 , G01M15/12 , Y02T10/46
摘要： A system for and a method of knock detection and control for an engine utilizes a knock sensor configured to generate a knock signal indicative of a vibration of the engine caused by abnormal combustion. A controller is configured to receive the knock signal, determine, with respect to a crank angle of the engine, distinct monitoring windows for low speed pre-ignition (LSPI) knock and spark knock, respectively, based on (i) spark timing and (ii) an appropriate mass fraction burn (MFB) location, monitor the knock signal using the distinct monitoring windows, detect one of LSPI knock and spark knock based on the monitoring, and control the engine to mitigate the detected LSPI knock or spark knock.
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公开(公告)号：US09810191B2
公开(公告)日：2017-11-07
申请号：US14376630
申请日：2013-02-11
申请人： SEM AB
CPC分类号： F02P17/12 , F02D35/021 , F02D41/0027 , F02D2200/1015 , F02M21/029 , G01M15/11
摘要： This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine (5) having a spark ignited ignition system (2) wherein said ignition system (2) includes misfire detection by means of a sensor device (4) providing information to a control system (20), connected to or within said ignition system (2), and wherein said combustion includes diluted operation to optimize emissions wherein said sensor device (4) includes an ion sensing measurement means (40) arranged to measure an ion current in said engine (5) and that said ignition system (2) has a built-in function to detect misfiring through an analysis of the ion current of the engine (5) during combustion.
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