| 摘要 |
PURPOSE:To have accurate injection of the fuel in a required amount through the use of a low pressure accumulator by furnishing a control device to control a one-way selector valve, a pressure regulator valve and a flow control valve in accordance with the operating condition of internal-combustion engine. CONSTITUTION:When a command signal is given from No.1 drive circuit 25 to a direction selector valve 64 so as to change over from (a) into (b), the outlet from a flow control valve 35 is put in communication with No.2 working oil inlet/outlet 60 to allow the working oil adjusted to Pressure P1 by a pressure regulator valve 33 to be fed into a pressurization cylinder chamber 62, and meantime the working oil in a decompression cylinder chamber 61 returns to oil tank 34. A piston 55 shafts now downward to compress the fuel oil in a pressure boosting chamber 58, and thus the fuel is injected. When the direction selector valve 64 is then changed over from (a) into (c), the working oil in said pressurization cylinder chamber 62 is released to the il tank 34, and meantime the working oil at Pressure P1 is fed to the decompression cylinder chamber 61 to actuate upward motion of pistons 54, 55. |
