Injection device has control chamber side opening that opens into inner side of valve chamber, which differs from side opposite side where low pressure source side opening opens

摘要

The device has a control chamber into which fuel under pressure is fed so it applies a closing pressure to a nozzle needle (31), a control chamber side opening connected to the control chamber, a low pressure side opening connected to a low pressure source, a valve chamber and a valve element. The control chamber side opening opens into the inner side of the valve chamber, which differs from a side opposite a side where the low pressure source side opening opens, whereby a direction in which the control chamber side opening opens is in a direction in which the valve element is absent.