FUEL INJECTION NOZZLE

摘要

Fuel Injection Nozzle Loss of valve opening pressure attributed to wear of contacting portions in fuel injection nozzle valves is limited due to provision of a valve tip having a lower portion which repetitively engages only a lower portion of a valve seat. Advantageous wear of the engaging portions increases the seating area but reduces the effective differential area for fuel pressure to act against, thus reducing the need for increased pressure to open or unseat the valve. Increased clearance results in less wear between a reciprocating valve and a cooperating guide which also contributes to reduced loss during the life of such nozzle valves.