| 摘要 |
PROBLEM TO BE SOLVED: To obtain a desired injection amount profile by using a single electro- magnetic solenoid precisely. SOLUTION: In the demagnetization state of an electromagnetic soldnoid 13, the pressurization chamber 231 of a pressure increase means 19 is communicated with a pressure release part 32 through a pressurization passage, the throttle passage 141 in a selector valve 14 and a pressure release passage 31 in this device and the communication of the control pressure chamber 361 of a pressure control means 44 with the pressure release part 32 is intercepted by a valve 16 for injection. In the exciting state of the electromagnetic solenoid 13, the pressurization chamber 231 is communicated with an operation fluid supply part 26 through the pressurization passage 33, annular passage 151 and pressurization passage 34 and the control pressure chamber 361 is communicated with the pressure release part 32. |
