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公开(公告)号：US10215124B2
公开(公告)日：2019-02-26
申请号：US15125712
申请日：2015-03-19
Applicant: DENSO CORPORATION
Inventor： Kosuke Nakano , Hiroshi Katsurahara
Abstract: A fuel injection control device is a control device controlling an injection of fuel by a fuel injector and includes: a setting part that sets a request injection quantity of an injection quantity requested of the fuel injector; a dividing part that divides the request injection quantity set by the setting part into a specified injection quantity and an adjusting injection quantity other than the specified injection quantity; an injection performing part that performs a dividing injection of an adjusting injection and a partial lift injection by the fuel injector, the adjusting injection injecting the adjusting injection quantity of fuel, the partial lift injection finishing a lift of a valve body of the fuel injector in a partial lift state before the valve body reaching a full lift position and injecting the specified injection quantity of fuel; and a learning part that learns an injection characteristic of the fuel injector at the time of the partial lift injection.
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Patent Agency Ranking
公开(公告)号：US08756914B2
公开(公告)日：2014-06-24
申请号：US13752791
申请日：2013-01-29
Applicant: Denso Corporation
Inventor： Kosuke Nakano , Shingo Nakata , Mikiyasu Matsuoka
IPC: F01N3/00
CPC classification number: F01N9/005 , F02D41/1441 , F02D41/1454 , F02D2041/1431
Abstract: An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a catalytic-state determination portion which determines a rich/lean state of the catalyst, a rich direction control portion which performs and terminates a rich direction control depending on the rich/lean state of the catalyst, a lean direction control portion which performs a lean direction control after the rich direction control, and a characteristic control portion which performs a lean responsiveness control at least during the lean direction control.
Abstract translation: 发动机的排放控制系统包括催化剂和排气传感器，其设置在排气的流动方向上的催化剂下游。 排气传感器包括传感器元件，其包括一对电极和位于电极之间的固体电解质体。 排放控制系统还包括通过在电极之间施加恒定电流来改变排气传感器的输出特性的恒定电流供给部，确定催化剂的富/贫状态的催化态判定部，富 方向控制部分，其根据催化剂的浓/贫状态执行和终止丰富方向控制;在丰富方向控制之后进行瘦方向控制的瘦方向控制部分，以及执行精益响应控制的特性控制部分 至少在倾向控制期间。
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公开(公告)号：US10519889B2
公开(公告)日：2019-12-31
申请号：US15766032
申请日：2016-09-28
Applicant: DENSO CORPORATION
Inventor： Masanori Kurosawa , Kosuke Nakano
Abstract: An ECU functioning as a diagnostic device includes an information acquisition portion acquiring a flow rate of a fluid flowing through an intake pipe, and a diagnostic portion performing a diagnosis on a second purge pipe employed as a fuel gas pipe regarding a connection failure. The diagnostic portion diagnoses a connection failure of the fuel gas pipe according to magnitude of a pulsation of the flow rate acquired by the information acquisition portion.
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公开(公告)号：US10718290B2
公开(公告)日：2020-07-21
申请号：US15745465
申请日：2016-06-14
Applicant: DENSO CORPORATION
Inventor： Naoki Yoshiume , Makoto Tanaka , Keisuke Yanoto , Kosuke Nakano
IPC: F02D41/40 , F02D41/20 , F02M51/06 , F02D41/34 , F01N3/36 , F02M61/10 , F02D41/24 , F02D41/14 , F02D41/02 , F01N3/10
Abstract: A control device for controlling a fuel injection in an internal combustion engine provided with a fuel injection valve has a driving portion supplying an electric power to a terminal of the fuel injection valve so as to drive the fuel injection valve to be opened; a current detecting portion detecting a drive current flowing through the fuel injection valve when the fuel injection valve is driven to be opened; a voltage detecting portion detecting a terminal voltage of the terminal of the fuel injection valve; a correction portion correcting the electric power supplied by the driving portion so that an actual value of the drive current detected by the current detecting portion agrees with a target value; a valve close detecting portion detecting a valve closing timing of the fuel injection valve based on the terminal voltage detected by the voltage detecting portion in a condition where the electric power supplied by the driving portion is corrected by the correction portion.
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公开(公告)号：US10151274B2
公开(公告)日：2018-12-11
申请号：US15752933
申请日：2016-10-25
Applicant: DENSO CORPORATION
Inventor： Yoshinori Maegawa , Masanori Kurosawa , Kosuke Nakano
Abstract: An abnormality detection device of an internal combustion engine includes an ECU that is an abnormality detection unit detecting a leakage occurrence of a second pure pipe. When the internal combustion engine is in a supercharging operation state that a supercharger operates and the second purge pipe is closed by a second purge valve, the ECU detects the leakage occurrence of the second purge pipe based on a differential pressure between a pressure in the second purge pipe and an atmospheric pressure. In this case, the valve pressure in the second purge pipe is a pressure in the second purge pipe between the second purge valve and the intake pipe.
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公开(公告)号：US08899014B2
公开(公告)日：2014-12-02
申请号：US13752728
申请日：2013-01-29
Applicant: Denso Corporation
Inventor： Kosuke Nakano , Shingo Nakata , Mikiyasu Matsuoka
CPC classification number: F01N11/00 , F02D41/1439 , F02D41/1455 , F02D41/1456 , F02D41/1475
Abstract: An emission control system for an engine includes a catalyst and an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas. The exhaust-gas sensor includes a sensor element that includes a pair of electrodes and a solid electrolyte body located between the electrodes. The emission control system further includes a constant current supply portion that changes an output characteristic of the exhaust-gas sensor by applying a constant current between the electrodes, a rich direction control portion that performs a rich direction control after a fuelling-stop control, and a characteristic control portion that performs a rich responsiveness control during the rich direction control. In the rich direction control, an air-fuel ratio of the exhaust gas is made to be richer. In the rich responsiveness control, the constant current supply portion increases a detection responsiveness of the exhaust-gas sensor with respect to rich gas.
Abstract translation: 发动机的排放控制系统包括催化剂和排气传感器，其设置在排气的流动方向上的催化剂下游。 排气传感器包括传感器元件，其包括一对电极和位于电极之间的固体电解质体。 发光控制系统还包括：恒流供给部，其通过在电极之间施加恒定电流来改变排气传感器的输出特性;丰富方向控制部，其在加油停止控制之后执行丰富方向控制;以及 特征控制部分，在丰富方向控制期间执行丰富的响应性控制。 在丰富的方向控制下，使排气的空燃比更加丰富。 在丰富的响应性控制中，恒流供应部分增加废气传感器相对于富气的检测响应性。
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