Patent ID: 9347410
Filing Date: 2016-05-24
CPC Classification: F02D,F02M

Claim Text:
1. A fuel injection device of a direct injection engine, comprising: an engine body; a fuel injection valve for directly injecting fuel containing gasoline into a cylinder of the engine body; and a controller for controlling the fuel injection by the fuel injection valve, the fuel injection valve including: wherein the controller operates the first solenoid coil and not the second solenoid coil to stroke the valve a first lift amount and thereby perform the fuel injection at least in an intake stroke period, when an operating state of the engine is within a range where an engine load is at least below a predetermined load within a low-engine-load range where compression-ignition combustion is performed, and wherein the controller operates at least the second solenoid coil to stroke the valve body a second lift amount that is greater than the first lift amount and thereby perform the fuel injection with a fuel pressure of 40 MPa or above in a period between a late stage of compression stroke and an early stage of expansion stroke, only when the operating state of the engine is within a low-engine-speed range where an engine speed is below a predetermined speed within a high-engine-load range where the engine load is higher than the low-engine-load range.