Patent ID: 7210463

Claim:
A pump for a fuel injection apparatus for an internal combustion engine, the pump comprising at least one pump element ( 14 ) having a pump piston ( 24 ) guided in a sealed fashion in a cylinder bore ( 26 ) of a housing part ( 10 ) which delimits a pump working chamber ( 30 ) in the cylinder bore ( 26 ), the pump piston ( 24 ) being driven into a stroke motion, the pump working chamber ( 30 ) being connected to an inlet conduit ( 34 ) via a connection controlled by an inlet valve ( 32 ) opening into the pump working chamber ( 30 ) and connected to an outlet conduit ( 38 ) via a connection controlled by an outlet valve ( 36 ) opening out from the pump working chamber ( 30 ), the inlet valve ( 32 ) having a valve element ( 46 ) that cooperates with a valve seat ( 44 ) and being acted on in a closing direction toward the valve seat ( 44 ) by a valve spring ( 48 ), the inlet conduit ( 34 ) in the housing part ( 10 ) having a part in the form of a first blind bore ( 42 ), which directly adjoins the pump working chamber ( 30 ) in the cylinder bore ( 26 ) with no intervening structure between them, the first blind bore having a smaller diameter than the cylinder bore ( 26 ), the valve seat ( 44 ) being formed at the transition from the cylinder bore ( 26 ) to the first blind bore ( 42 ), and a second blind bore ( 50 ), as another part of the inlet conduit ( 34 ), feeding into the first blind bore ( 42 ).