Patent ID: 6588383
Filing Date: 2003-07-08
Classification: F02B,F02M,Y10S

Abstract:
A diaphragm carburetor for an internal combustion engine, said carburetor comprising:a housing having housing sections; an impulse pressure driven fuel pump that is disposed in said housing and is formed of a pump chamber, an operating chamber, and a diaphragm to which force is applied by a spring, wherein lateral edges of said diaphragm are held in a plane of separation between said housing sections and said diaphragm separates said pump chamber and said operating chamber, and wherein a freely movable diaphragm surface is defined between said lateral edges of said diaphragm, which edges are spaced apart by a distance b that in said plane of separation is equal to more than half of a width B of said housing; a pressure impulse connector that communicates with said operating chamber; a fuel intake valve associated with said pump chamber; and a fuel outlet valve associated with said pump chamber wherein both said fuel intake valve and said fuel outlet valve are disposed at a distance a from said plane of separation.