发明名称 |
FUEL INJECTION CONTROL DEVICE OF ENGINE AND FUEL INJECTION CONTROL METHOD OF ENGINE |
摘要 |
A fuel injection control device of an engine is disclosed, that is provided with a fuel injection valve configured to inject a fuel according to a target pulse width into an intake passage, an intake flow rate detection unit arranged to detect a flow rate of an intake air supplied to the engine, an intake pressure detection unit arranged to detect an intake pressure in the intake passage, a fuel pressure detection unit arranged to detect a pressure of a fuel supplied to the fuel injection valve, and a pressure control unit configured to control the fuel pressure according to an engine operation state. The device is further provided with a request pulse width calculation unit configured to calculate a request pulse width on the basis of an intake flow rate detected by the intake flow rate detection unit, a fuel pressure detected by the fuel pressure detection unit, and a differential pressure between the fuel pressure and an intake pressure detected by the intake pressure detection unit, a post-correction request pulse width calculation unit configured to calculate a post-correction request pulse width through correcting the request pulse width according to the differential pressure, when injecting a fuel of which flow rate is lower than a predetermined flow rate; and a target pulse width setting unit configured to set the target pulse width on the basis of the post-correction request pulse width. |
申请公布号 |
US2016215725(A1) |
申请公布日期 |
2016.07.28 |
申请号 |
US201314917288 |
申请日期 |
2013.09.09 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
TERAUCHI Kazumichi;YOKOYA Shigehiro;AMANO Akio;KATAYAMA Takatsugu |
分类号 |
F02D41/40;F02D41/18 |
主分类号 |
F02D41/40 |
代理机构 |
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代理人 |
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主权项 |
1. A fuel injection control device of an engine for controlling an injection amount of fuel, comprising:
a fuel injection valve configured to inject a fuel according to a target pulse width into an intake passage; an intake flow rate detection unit arranged to detect a flow rate of an intake air supplied to the engine; an intake pressure detection unit arranged to detect an intake pressure in the intake passage; a fuel pressure detection unit arranged to detect a pressure of a fuel supplied to the fuel injection valve; a pressure control unit configured to control the fuel pressure according to an engine operation state; a request pulse width calculation unit configured to calculate a request pulse width on the basis of an intake flow rate detected by the intake flow rate detection unit, a fuel pressure detected by the fuel pressure detection unit, and a differential pressure between the fuel pressure and an intake pressure detected by the intake pressure detection unit; a post-correction request pulse width calculation unit configured to calculate a post-correction request pulse width through correcting the request pulse width according to the differential pressure, when injecting a fuel of which flow rate is lower than a predetermined flow rate; and a target pulse width setting unit configured to set the target pulse width on the basis of the post-correction request pulse width. |
地址 |
2, Takara-cho, Kanagawa JP |