| 摘要 |
<P>PROBLEM TO BE SOLVED: To cope with the high temperature abnormality of an EGR gas caused by a problem of an EGR cooler or the like. <P>SOLUTION: An engine includes a cylinder injection injector for injecting directly fuel into a combustion chamber 2, and a port injection injector for injecting fuel into an intake port. The temperature THEGR of the EGR gas is detected on the outlet side of the EGR cooler (S1), to be compared with the first-third threshold values (S2-S4). An injection amount from the cylinder injection injector is increased to prevent knocking (S6), when the temperature of the EGR gas is elevated to exceed the first threshold value. An injection amount from the port injection injector is increased to prevent an intake system resin part from being fusion-damaged (S7), when the temperature of the EGR gas is further elevated to exceed the second threshold value. The EGR is stopped (S8), when the temperature of the EGR gas is further elevated to exceed the third threshold value. <P>COPYRIGHT: (C)2011,JPO&INPIT |
