Fuel injector valve for IC engine - uses continuous fuel circulation with fuel feed pipe with open ends inside branch pipe

摘要

Each fuel injector is connected by a branch pipe (2) to a fuel circuit (3). Fuel under pressure flows through the circuit continuously while the ignition is switched on. Each branch pipe contains a fuel pipe (5) arranged coaxially inside the branch pipe. The inlet end (6) of the fuel pipe is located as low as possible inside the injector valve. The outlet end extends into the fuel circuit. The outlet end is formed as an ejector (7). The fuel enters the injector valve via the branch pipe (2) and leaves via the coaxial feed pipe (5). The purpose is to create a fuel circulation to cool the injector and avoid the formation of air bubbles.