| 摘要 |
PROBLEM TO BE SOLVED: To precisely obtain a desired injection quantity profile by using a single electro-magnetic solenoid. SOLUTION: The spring force of a spring 21 for injection for energizing a valve 20 for injection is made larger than the spring force of the spring 26 for pressure increasing for energizing a valve 25 for pressure increasing. In the demagnetization state of an electro-magnetic solenoid 16, the pressurization room 281 of a pressure increase means 32 is communicated with an operation fluid supply part 37 and the communication of the control pressure room 301 of a pressure control means 44 with the pressure release part 39 is intercepted. In the weak exciting state of the electromagnetic solenoid 16, the pressurization room 281 is communicated with the operation fluid supply part 37 and the control pressure room 301 is communicated with the pressure release part 39. In the strong exciting state of the electromagnetic solenoid 16, the pressurization 281 is communicated with the pressure release part 39 and the control pressure room 301 is communicated with the pressure release part 39. |
