Patent ID: 7801672

Claim:
An after-stop fuel pressure control device of a direct injection engine including a pressure reducing mechanism for reducing pressure of fuel in a high-pressure fuel system, which supplies high-pressure fuel from a high-pressure pump to an injector, after the engine stops, the after-stop fuel pressure control device comprising: an engine stop position determining means for detecting or estimating an engine stop position; an after-stop target fuel pressure setting means for setting after-stop target fuel pressure in accordance with the engine stop position detected or estimated by the engine stop position determining means such that the fuel pressure in the high-pressure fuel system is reduced to as low fuel pressure as possible within a range, in which single compression starting is possible, wherein the single compression starting is to start the engine by causing a first explosion in a cylinder that is in a first compression stroke at an engine start; and an after-stop fuel pressure controlling means for controlling the pressure reducing mechanism to reduce the fuel pressure in the high-pressure fuel system to the after-stop target fuel pressure after the engine stops.