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公开(公告)号：EP3779155A1
公开(公告)日：2021-02-17
申请号：EP19795976.0
申请日：2019-04-23
发明人： MATSUMOTO, Kota , URUSHIHARA, Tomonori , MARUYAMA, Keiji , SUEOKA, Masanari , ONO, Ryohei , HARADA, Yuji , MIYAMOTO, Toru , INOUE, Atsushi , TOKUNAGA, Tatsuhiro , OHURA, Takuya , KAWAI, Yusuke , NISHIDA, Tomohiro , ARAI, Keita , YAMAGUCHI, Yodai
摘要： The control apparatus according to the present invention is applied to a compression-ignition type engine capable of carrying out partial compression ignition combustion in which some of air-fuel mixture is subjected to SI combustion by spark ignition while the rest of the air-fuel mixture is subjected to CI combustion by self-ignition. This control apparatus includes an ignition control section and an injection control section. When the 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 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 higher when an engine speed is high than when the engine speed is low.
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公开(公告)号：EP3502448B1
公开(公告)日：2020-11-25
申请号：EP18209066.2
申请日：2018-11-29
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公开(公告)号：EP3726035A1
公开(公告)日：2020-10-21
申请号：EP20159946.1
申请日：2020-02-28
发明人： MARUYAMA, Keiji , OHURA, Takuya , SUEOKA, Masanari , TOKUNAGA, Tatsuhiro , MIYAMOTO, Toru , NISHIDA, Tomohiro
摘要： A control device is provided for an engine in which SPCCI combustion is carried out in which SI combustion of a portion of a mixture gas is performed by jump-spark ignition, and CI combustion of the remaining mixture gas is performed by self-ignition. When the engine is low load and a temperature is less than a given value, an early injection in which fuel is injected during an intake stroke and a retarded injection in which fuel is injected during the second half of a compression stroke are performed, and SPCCI combustion of A/F-lean mixture gas is performed. When the engine is low load and the temperature is greater than or equal to the given value, an injection amount ratio of the early injection is increased and the ratio of the retarded injection is decreased, and SPCCI combustion of A/F-lean mixture gas is performed.
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公开(公告)号：EP3726033A1
公开(公告)日：2020-10-21
申请号：EP20160524.3
申请日：2020-03-03
发明人： MARUYAMA, Keiji , OHURA, Takuya , SUEOKA, Masanari , TOKUNAGA, Tatsuhiro , MIYAMOTO, Toru , NISHIDA, Tomohiro
摘要： A control device is provided for an engine in which homogeneous-charge compression ignition combustion is carried out. The device includes an air amount adjusting mechanism, a variable valve mechanism, an exhaust choke valve, a water temperature sensor, and a processor. The processor controls the variable valve mechanism so that a valve overlap period of a given amount or more is formed in a low-load range where the engine load is low, and controls an injector, the air amount adjusting mechanism, and the exhaust choke valve so that A/F lean mixture gas is formed inside a combustion chamber, and homogeneous-charge compression ignition combustion of the mixture gas is carried out. During the operation in the low-load range, the combustion controlling module makes an opening of the exhaust choke valve when a temperature parameter is low, smaller than that when the temperature parameter is high.
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5.发明公开
公开(公告)号：EP3572656A1
公开(公告)日：2019-11-27
申请号：EP19174815.1
申请日：2019-05-16
发明人： INOUE, Atsushi , SUEOKA, Masanari , MARUYAMA, Keiji , OHURA, Takuya , NISHIDA, Tomohiro , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro , KAWAI, Yusuke
摘要： A compression-ignition engine control system is provided, which includes an intake phase-variable mechanism and a controller. Within a first operating range and a second operating range on a higher engine load side, the controller controls the variable mechanism to form a gas-fuel ratio (G/F) lean environment in which an air-fuel ratio inside a cylinder is near a stoichiometric air-fuel ratio and burnt gas remains inside the cylinder, and controls a spark plug to spark-ignite mixture gas inside the cylinder to combust in a partial compression-ignition combustion. The controller controls the variable mechanism to retard the intake valve open timing on an advancing side of TDC of an exhaust stroke, as the engine load increases within the first range, and advance the intake valve close timing on a retarding side of TDC of intake stroke, as the engine load increases within the second range.
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6.发明公开
公开(公告)号：EP3502433A1
公开(公告)日：2019-06-26
申请号：EP18209036.5
申请日：2018-11-29
摘要： A control system for a compression-ignition engine is provided, which includes an engine having a combustion chamber, an injector configured to supply fuel into the combustion chamber, a spark plug, a swirl valve provided to an intake passage of the engine, and a controller. The controller includes a processor configured to execute a swirl adjusting module to adjust a swirl valve opening to generate a swirl flow inside the combustion chamber, a fuel injection amount controlling module to control fuel injection amounts of pre-injection and post-injection so as to increase a ratio of an injection amount of the post-injection to a total fuel injection amount into the combustion chamber in one cycle as an engine speed increases, and a combustion controlling module to control the spark plug to ignite at a given ignition timing after the swirl generation and fuel injection, so that partial compression-ignition combustion is performed.
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7.发明公开
公开(公告)号：EP3767098A1
公开(公告)日：2021-01-20
申请号：EP20183618.6
申请日：2020-07-02
发明人： NISHIDA, Masami , MIYAMAE, Toru , YAMASHITA, Shigeki , TAKEMOTO, Kazuhiro , ITO, Michio , NISHIMURA, Kazuhiro , KAWAI, Yusuke , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro
摘要： A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configured to open and close a suction port, is provided. When a pressurizing cycle consists of a period of pressurizing stroke in which the volume of the pressurizing chamber is reduced to allow fuel to be pressurized and a period of suction stroke in which the volume of the pressurizing chamber is increased to allow fuel to be drawn into the pressurizing chamber, , a closing cycle of the on-off valve is controlled so that a ratio of the closing cycle to the pressurizing cycle becomes smaller in a second combustion mode where a partial compression-ignition combustion is performed than in a first combustion mode where SI combustion is performed.
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公开(公告)号：EP3719289A1
公开(公告)日：2020-10-07
申请号：EP20160391.7
申请日：2020-03-02
发明人： SUEOKA, Masanari , TAGA, Junichi , OMORI, Hideki , MARUYAMA, Keiji , TOKUNAGA, Tatsuhiro , OHURA, Takuya , MIYAMOTO, Toru , NISHIDA, Tomohiro , TANIMURA, Kenji , TAKAYAMA, Shinji
摘要： The control apparatus for a compression ignition type engine includes a plurality of cylinder inner pressure sensors that detect pressure in each cylinder, and a combustion control unit. The combustion control unit corrects a target fuel injection amount of each cylinder by an injector based on a deviation between a predicted combustion period that is a period from an ignition timing by an ignition plug to a predetermined mass combustion timing and that is obtained based on a preset combustion model, and an actual combustion period that is a period from the ignition timing by the ignition plug to an actual combustion timing and that is obtained based on cylinder inner pressure, such that the period from the ignition timing by the ignition plug to the predetermined mass combustion timing, which is the timing when fuel having a predetermined mass ratio combusts, is equalized in each cylinder.
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9.发明公开
公开(公告)号：EP3572655A1
公开(公告)日：2019-11-27
申请号：EP19174813.6
申请日：2019-05-16
发明人： SUEOKA, Masanari , INOUE, Atsushi , MARUYAMA, Keiji , OHURA, Takuya , NISHIDA, Tomohiro , KAWAI, Yusuke , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro
摘要： A control system for a compression-ignition engine which performs SPCCI combustion in which mixture gas is ignited with a spark plug to be partially combusted by SI combustion and the rest of mixture gas self-ignites to be combusted by CI combustion, is provided. When the engine is operated at least in a given first operating range, a controller of the device controls an intake variable mechanism so that an A/F lean environment where an air-fuel ratio in a cylinder becomes higher than a stoichiometric air-fuel ratio is formed, while causing the spark plug to perform spark ignition at a given timing so that the mixture gas combusts by SPCCI combustion, and controls so that, under the same engine load condition, an intake valve close timing is more retarded as the engine speed decreases, within a range where an amount of air inside the cylinder decreases by retarding the close timing.
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10.发明公开
公开(公告)号：EP3502447A1
公开(公告)日：2019-06-26
申请号：EP18209031.6
申请日：2018-11-29
摘要： A control system for a compression-ignition engine is provided, which includes an engine having a combustion chamber, an injector, a spark plug, a swirl valve provided to an intake passage of the engine, and a controller connected to the injector, the spark plug, and the swirl valve to control them. The controller includes a processor configured to execute a swirl adjusting module to control an opening of the swirl valve so as to make the opening of the swirl valve smaller as an engine speed decreases and output a control signal to the injector to inject the fuel after the control of the swirl valve, and a combustion controlling module to output an ignition instruction to the spark plug so as to ignite at a given ignition timing after the EGR ratio adjustment, so that partial compression-ignition combustion is performed.
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