Governor apparatus and system

Claim 1

A carburetor and governor assembly for an internal combustion engine, comprising body means, induction passage means formed through said body means and having an inlet end and an outlet end, a venturi situated within said induction passage means and generally between said inlet and outlet ends, variably positionable throttle valve means situated in said induction passage means for variably controlling the rate of flow of motive fluid through said induction passage means and into said engine, a fluid pressure responsive motor means comprising first and second chamber means generally separated by a pressure responsive movable diaphragm, connecting means operatively interconnecting said diaphragm with said throttle valve means, first conduit means communicating between a source of ambient atmosphere and said first chamber means, second conduit means adapted to communicate as between said source of ambient atmosphere and said second chamber means, third conduit means adapted to communicate as between a source of engine vacuum and said second chamber means, actuatable control valving means generally interposed in fluid circuit in said second and third conduit means, said control valving means when actuated toward a first position being effective to permit a relatively proportionally greater communication between said second chamber means and said source of ambient atmosphere and a relatively proportionately lesser communication between said second chamber means and said source of engine vacuum, said control valving means when actuated in a direction opposite from said first position and toward a second position also being effective to permit a relatively proportionally lesser communication between said second chamber means and said source of ambient atmosphere and a relatively proportionally greater communication between said second chamber means and said source of engine vacuum, said diaphragm being effective to move said throttle valve means toward a more nearly closed throttle position when said communication as between said second chamber means and said source of engine vacuum becomes sufficiently great to cause a pressure differential of sufficient magnitude across said diaphragm, and fourth conduit means effectively communicating between said second chamber means and said induction passage means generally in the vicinity of said venturi, said fourth conduit means being effective for communicating a venturi generated vacuum to said second chamber means, each of said third and fourth conduit means comprising calibrated passage means, said third and fourth conduit means being interconnected to each other, said third conduit means communicating with said induction passage means generally downstream of said throttle valve means, and said communication between said fourth conduit means and said second chamber means being controlled by said valving means in the same manner and relationship with respect to said ambient atmosphere as is said communication between said source of engine vacuum and said second chamber means.