-
公开(公告)号：EP3741977A1
公开(公告)日：2020-11-25
申请号：EP20161091.2
申请日：2020-03-05
发明人： TAKEMOTO, Kazuhiro , ITO, Michio , SUEOKA, Masanari , NISHIMURA, Kazuhiro , HADAMA, Kouji , SUMITA, Masataka , NISHIDA, Masami
摘要： A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism sets an air-fuel ratio of a fuel-air mixture to be generated within a combustion chamber to an air-fuel ratio equal to or leaner than a theoretical air-fuel ratio, based on an operating condition of an engine; drives the fuel injection valve, based on the set air-fuel ratio; estimates a deposition amount of deposits on an injection hole of the fuel injection valve, based on an operating condition of the engine; causes the fuel pressure adjustment mechanism to increase the fuel pressure, when the estimated deposition amount of deposits exceeds a predetermined value; and restricts the fuel pressure from increasing, even when the estimated deposition amount of deposits exceeds the predetermined value, as far as the set fuel-air ratio is set to an air-fuel ratio leaner than the theoretical fuel-air ratio.
-
2.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.
-
公开(公告)号：EP3741979A1
公开(公告)日：2020-11-25
申请号：EP20161086.2
申请日：2020-03-05
发明人： TAKEMOTO, Kazuhiro , ITO, Michio , SUEOKA, Masanari , NISHIMURA, Kazuhiro , HADAMA, Kouji , SUMITA, Masataka , NISHIDA, Masami
摘要： A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism integrates a deposition amount of deposits per unit time, and estimates a deposition amount of deposits on an injection hole of the fuel injection valve. The controller causes the fuel pressure adjustment mechanism to increase a fuel pressure, when the estimated deposition amount exceeds a predetermined value, and corrects the unit deposition amount acquired by the deposition amount estimation according to the set fuel injection timing of the fuel injection valve. The controller corrects such that as compared with the unit deposition amount when the fuel injection timing is set to a first timing away from a top dead center of the piston by a first period, the unit deposition amount decreases when the fuel injection timing is set to a second timing away by a second period longer than the first period.
-
公开(公告)号：EP3599364A1
公开(公告)日：2020-01-29
申请号：EP19186906.4
申请日：2019-07-18
发明人： MASUDA, Yuta , HIGASHIO, Masayoshi , SUNAGARE, Yugou , ITO, Michio , UJIHARA, Kenko , MATSUSHIMA, Yuto
摘要： A control system for a compression ignition engine is provided, which includes a sensor and a cylinder count control module which changes between all-cylinder and reduced-cylinder operations when the compression ignition combustion is performed at a given lean air-fuel ratio. The cylinder count control module executes a preparation control to change from the all-cylinder operation to the reduced-cylinder operation when the change is demanded. In the preparation control, the cylinder count control module outputs a signal to a throttle valve to execute an air amount increase processing, outputs a signal to a fuel injection valve to execute a fuel amount increase processing, and outputs a signal to an ignition plug to execute a retard processing. The cylinder count control module ends the fuel amount increase processing and the retard processing when it is determined that an air-fuel ratio is in a given air-fuel ratio state, and starts the reduced-cylinder operation.
-
-
-
搜索结果
4 条记录 (耗时 0.014 秒)
