Patent ID: 7934490
Filing Date: 2011-05-03
Classification: F02D,F02M,Y02T

Abstract:
1. A start-up control device of an internal combustion engine, the start-up control device comprising: a detector that detects a fuel temperature when a start-up of the internal combustion engine is requested; and a controller that pre-drives a fuel pump that supplies fuel, via a fuel piping, to a fuel injection valve that sends fuel into a combustion chamber of the internal combustion engine before the internal combustion engine is started up by injecting fuel from the fuel injection valve, wherein the controller divides the fuel temperature into fuel temperature ranges based on the detected fuel temperature, and sets a pre-feed time during which the fuel pump is pre-driven, for each of the fuel temperature ranges, wherein the fuel temperature ranges comprise: wherein, if it is judged that the detected fuel temperature falls in the second temperature range, then the controller judges that the degree of occurrence of fuel vapor that affects the start-up characteristic of the internal combustion engine is great, and controls the pre-feed time so that the pre-feed time for the second temperature range becomes relatively long compared to a pre-feed time for the first temperature range and the third temperature range.