发明名称 |
CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE |
摘要 |
This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio. |
申请公布号 |
US2016017829(A1) |
申请公布日期 |
2016.01.21 |
申请号 |
US201314763566 |
申请日期 |
2013.01.29 |
申请人 |
HAYASHITA Go;AOKI Keiichiro |
发明人 |
HAYASHITA Go;AOKI Keiichiro |
分类号 |
F02D41/14 |
主分类号 |
F02D41/14 |
代理机构 |
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代理人 |
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主权项 |
1. A control system of an internal combustion engine comprising: an air-fuel ratio sensor which is provided in an exhaust passage of the internal combustion engine; and an engine control system which controls the internal combustion engine in accordance with an output of said air-fuel ratio sensor,
wherein said air-fuel ratio sensor is configured so that an applied voltage, whereby an output current becomes zero, changes in accordance with the exhaust air-fuel ratio, and so that when the exhaust air-fuel ratio is a stoichiometric air-fuel ratio, if increasing the applied voltage at said air-fuel ratio sensor, the output current increases along with that, and wherein when said air-fuel ratio sensor detects the air-fuel ratio of the exhaust gas, the applied voltage at said air-fuel ratio sensor is fixed to a constant voltage, and said constant voltage is a voltage which is different from the voltage whereby the output current becomes zero when the exhaust air-fuel ratio is the stoichiometric air-fuel ratio, and is the voltage whereby the output current becomes zero when the exhaust air-fuel ratio is an air-fuel ratio which is different from the stoichiometric air-fuel ratio. |
地址 |
Toyota-shi, Aichi JP |