| 摘要 |
<p>A fuel injector comprising a restricted opening (25) arranged between the pressure chamber (17) and the pressure control chamber (18), a check valve (28) for permitting fuel to flow only from the pressure control chamber (18) to the pressure chamber (17), and an opening and closing valve opening (29) when the fuel pressure in the pressure control chamber (18) becomes lower than the fuel pressure in the pressure chamber (17), by a predetermined pressure. The restricted opening (25), the check valve (28) and the opening and closing valve (29) are arranged in parallel to each other, and by controlling the fuel pressure in the pressure control chamber (18) by a fuel pressure control unit (35), a first pattern in which the fuel injection rate is gradually raised, and a second pattern in which the fuel injection rate is quickly raised, can be obtained. <IMAGE></p> |
