Patent ID: 6918383
Filing Date: 2005-07-19
Classification: F02M,Y02T

Abstract:
1. For use in combination with an internal combustion engine having an engine block, a plurality of combustion chambers, intake air passages formed in the engine block so that one intake air passage is fluidly associated with and connected to each combustion chamber, a source of fuel, and a primary intake manifold having an air inlet and a plurality of outlet ports with at least one port associated with each combustion chamber, said system comprising: a cold start fuel injector assembly having an inlet and an outlet, said cold start fuel injector assembly inlet being fluidly connected to the source of fuel, an auxiliary intake manifold having an internal chamber, said auxiliary intake manifold having a manifold housing portion interposed between the primary intake manifold and the engine block, said manifold housing portion defining a fuel passageway fluidly connecting each air intake passage with its associated port(s) in the primary air intake manifold, a plurality of control orifice members, at least one control orifice member being associated with each combustion chamber, each control orifice member being open to one fuel passageway in the manifold housing portion, said cold start fuel injector assembly outlet being fluidly connected to said auxiliary intake manifold chamber, a plurality of fuel feed tubes, one fuel feed tube extending between said auxiliary intake manifold chamber and to each control orifice member.