Patent ID: 7651039
Filing Date: 2010-01-26
Classification: F02M

Abstract:
1. A fuel injection valve comprising: a valve chamber; a control valve that is provided in the valve chamber, wherein: an actuator that actuates the control valve; a control chamber that is always communicated with the valve chamber through a communication passage; and a nozzle that has a needle for opening and closing an injection orifice, wherein the needle is biased in a valve closing direction for closing the injection orifice by pressure of fuel in the control chamber, wherein: high pressure fuel in the high-pressure fuel passage is introduced into the control chamber only through the communication passage in a state, where the communication between the valve chamber and the high-pressure fuel passage is allowed; the communication passage has a common orifice having a first diameter; the low-pressure fuel passage has an out orifice having a second diameter; and the first diameter is larger than the second diameter.