US 4,359,024 A · Engine attachment

Abstract

An apparatus for regulating the quantity of air-fuel mixture supplied to each of the cylinders of an internal combustion engine and for selectively obstructing the flow of the air-fuel mixture to one or more such cylinders to effectively disable those cylinders. A butterfly valve is provided for each cylinder of the engine and is positioned in the passage in the intake assembly which supplies the air-fuel mixture to that cylinder at a location adjacent the end of the passage which is remote from the carburetor. The valves are controlled individually or in groups by a manually operated control mechanism. In one embodiment, the intake assembly includes a valve plate which is positioned between the engine block assembly and the intake manifold, with a portion of each branch passage being defined by a respective opening through the valve plate and each butterfly valve being provided in a respective one of such openings in the valve plate.

Claims8

Dependent claims

A multi-cylinder, reciprocating piston, four-stroke cycle, internal combustion engine, comprising:

an engine block assembly having a plurality of cylinders, a reciprocable piston in each cylinder and an intake port for supplying an air-fuel mixture to each said cylinder;
intake means mounted on said engine block assembly and having a plurality of passages, each of said passages being in communication with the intake port of one of said cylinders;
air-fuel mixture supply means connected to said intake means and communicating with each of said passages thereof for supplying an air-fuel mixture to each of said cylinders in said engine block assembly through one of said passages and its associated intake port;
valve means for regulating the quantity of said air-fuel mixture that can flow through said passages, said valve means including a valve positioned in each of said passages at a location remote from said supply means and adjacent to the intake port of its associated cylinder;
and
control means cooperable with said valve means for selectively operating said valves to effect regulation of the quantity of the air-fuel mixture that can flow through said passages.

3 more elements

Dependencies are inferred from the claim text.

Engine attachment

Life of this patent

Engine attachment

Life of this patent

Abstract

Claims8