초록 ▼

A control valve, preferably for use with a fuel injector, includes a valve body defining a solenoid cavity, an inlet passage, an outlet passage and a metering passage extending between the solenoid cavity and the outlet passage. A solenoid is mounted in the solenoid cavity. A valve member has one en

A control valve, preferably for use with a fuel injector, includes a valve body defining a solenoid cavity, an inlet passage, an outlet passage and a metering passage extending between the solenoid cavity and the outlet passage. A solenoid is mounted in the solenoid cavity. A valve member has one end attached to the solenoid and is positioned to reciprocate in the valve body between an open position in which the inlet passage is opened to the outlet passage and a closed position in which the inlet passage is closed to the outlet passage. The inlet passage is in fluid communication with the solenoid cavity via the metering passage when the valve member is in its open position. Appropriate sizing of the metering passage can prevent secondary injections by providing adequate pressure relief to the solenoid cavity while also substantially damping any pressure waves that may travel to the solenoid cavity through the metering passage.

대표청구항 ▼

[ We claim:] [1.] A control valve comprising:a valve body defining a solenoid cavity, an inlet passage, an outlet passage and a metering passage extending between said solenoid cavity and said outlet passage;a solenoid mounted in said solenoid cavity;a valve member with one end attached to said sole

[ We claim:] [1.] A control valve comprising:a valve body defining a solenoid cavity, an inlet passage, an outlet passage and a metering passage extending between said solenoid cavity and said outlet passage;a solenoid mounted in said solenoid cavity;a valve member with one end attached to said solenoid and positioned to reciprocate in said valve body between an open position in which said inlet passage is open to said outlet passage and a closed position in which inlet passage is closed to said outlet passage; andsaid inlet passage being in fluid communication with said solenoid cavity via said metering passage when said valve member is in said open position.