The present application relates to a pump unit (301) for a fuel injection system. The pump unit (301) comprises an inlet sealing ring (311), a pumping chamber (305) and a plunger (321) for pressurising fuel in the pumping chamber (305). The inlet sealing r...

The present application relates to a pump unit (101; 201; 201') for a fuel injection system. The pump unit (101; 201; 201') has an inlet valve (107; 207), an outlet valve (109; 209), a supply line (111; 211) for supplying fuel, a pumping chamber (105; 205;...