START-UP CONTROL DEVICE AND START-UP CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

摘要

An engine ECU stores a map in which three regions, that is, a high-temperature region (1), a low-temperature region (3), and a region (2) therebetween, are prescribed. The pre-feed time T set when the present condition falls in the region (2) is the longest. An engine ECU executes a program that includes the step (S400) of detecting an engine cooling water temperature THW (S200) when the start-up of the engine is requested (YES in S100), the step (S600) of executing the pre-feed until the fuel pressure P becomes equal to or greater than a fuel pressure threshold value P(TH), and the step (S700) of starting the cranking when the fuel pressure P becomes equal to or greater than the fuel pressure threshold value P(TH) (YES in S600). Thus, the bad start-up caused by fuel vapor is avoided without operating the fuel pump unnecessarily for a long time.