Patent ID: 6379132
Filing Date: 2002-04-30
Classification: F02M

Abstract:
A fuel pump of the type having a pump housing defining a bore and a plunger reciprocal in said bore, and further including a tappet having a non-pressurized fluid supplying passageway with an outlet at one end, said tappet extending into said bore for driving said plunger to pressurize fuel in a pumping chamber for delivery of the fuel to a fuel injector, said fuel pump further including a load transmission apparatus interposed between said tappet and said plunger, said load transmission apparatus comprising:an enclosed housing defining a first chamber therein, said housing defining an aperture through a top thereof receiving therethrough said end of said tappet having said outlet; a member within said housing and abutted to said tappet end, said member defining a second chamber therein in fluid communication with said tappet outlet when said tappet is not transmitting a load, said member resiliently biased to an extended position and movable to a compressed position when loaded by said tappet.