| 摘要 |
PROBLEM TO BE SOLVED: To allow an injection valve to perform prescribed opening/closing operation even if vaporized gas acting to the injection valve as a primary side pressure becomes high pressure due to temperature rise in a system injecting the prescribed positive pressure vaporized gas. SOLUTION: A drive current value I2 higher than a drive current value I1 of an injection valve, a suction time T2 and a retaining time D2 longer than a suction time T1 and a retaining time D1 of a valve element which are set for injecting the prescribed positive pressure vaporized gas, are set. The valve element is opened by a strong suction force and retained in a long-time valve opening position so as to appropriately inject the fuel. When the high pressure state is released, the valve element is returned to the opening/closing operation in compliance with the I1, T1 and D1. COPYRIGHT: (C)2004,JPO&NCIPI |
