发明名称 |
CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE |
摘要 |
An object is to achieve stable diesel combustion and improvement in the thermal efficiency of the diesel combustion in an internal combustion engine using a fuel having a relatively high self-ignition temperature. A control apparatus for an internal combustion engine includes a fuel injection valve capable of injecting fuel into a combustion chamber and an ignition device whose position relative to the fuel injection valve is set in such a way that it can ignite fuel spray directly. The apparatus performs pre-injection at a predetermined pre-injection time during the compression stroke and main injection at a predetermined injection start time after pre-spray formed by the pre-injection is ignited by the ignition device, thereby causing self-ignition to occur and causing at least a portion of the main-injected fuel to burn by diffusion combustion. When the quantity of the pre-injected fuel is increased, the pre-injection time is advanced responsive to the increase in the quantity of the pre-injected fuel. |
申请公布号 |
US2016333818(A1) |
申请公布日期 |
2016.11.17 |
申请号 |
US201515112245 |
申请日期 |
2015.01.16 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OCHI Yuta;KASHIWAGURA Toshimi |
分类号 |
F02D41/40;F02D41/26;F02D37/02;F02P15/00;F02P5/15 |
主分类号 |
F02D41/40 |
代理机构 |
|
代理人 |
|
主权项 |
1. A control apparatus for an internal combustion engine comprising:
a fuel injection valve capable of injecting gasoline as fuel into a combustion chamber of said internal combustion engine; an ignition plug whose position relative to the fuel injection valve is set in such a way that fuel spray injected through said fuel injection valve passes through an ignition-capable region and the ignition plug can spark-ignite the fuel spray directly; and a controller comprising at least one processor configured to perform pre-injection through said fuel injection valve at a predetermined pre-injection time during a compression stroke and main injection at such a predetermined injection start time before the top dead center of the compression stroke that enables combustion to be started by flame generated by combustion of pre-injected fuel after pre-spray formed by the pre-injected fuel is spark-ignited by said ignition plug, thereby causing a predetermined way of combustion in which self-ignition occurs and at least a portion of the main-injected fuel is burned by diffusion combustion, wherein when the quantity of said pre-injected fuel is increased, said controller advances said pre-injection time responsive to the increase in the quantity of said pre-injected fuel, thereby increases an injection interval between said pre-infection time and said predetermined injection start time of said main injection. |
地址 |
Toyota-shi, Aichi JP |