| 摘要 |
PURPOSE:To fully apply a factor of pressure increase and adjust fuel injection pressure, by positively adjusting a quantity of fuel charged till the time to fire in a fuel injection device which supplies high pressure fuel oil held at fixed pressure into a cylinder synchronously with movement of an engine. CONSTITUTION:High pressure fuel is supplied to a fuel accumulator 2 from a fuel pump 1, and fuel from the accumulator 2 is injected into a cylinder 4 through a fuel selector valve 3 controlled by a fuel injection controller 12 and a fuel injection valve 13. While temperature of a cylinder wall or temperature of cooling water in a part of the cylinder wall detected by a temperature detector 5 is input to an arithmetic unit 6 with a fuel injection timing signal 14 to calculate target fuel pressure most suitable for the detected temperature. A pressure controller 7 compares a target fuel pressure signal 10 with a fuel pressure signal from the accumulator 2 to control the pump 1 so as to eliminate a deviation between said signals. |
