External idle air bypass for carbureted engines
OwnerPeter G. Szczepanskiinventor
Life of this patent
Estimating the term…
Abstract
An external idle air bypass for carbureted engines having a threaded housing containing a ball valve, which mounts to the outside of the carburetor at a passage which admits air to the intake plenum beneath the carburetor's throttle blades. The threaded housing may be made of metal or other materials. The ball valve may be made from brass and steel, though other materials can be used. A handle is used to operate the ball valve and is retained by a threaded nut. An air cleaner may be attached to the valve housing. Opening and closing the ball valve permits a precisely metered amount of air to enter the engine at idle, enabling the mechanic to vary the amount and air/fuel ratio of the engine without disturbing the throttle blades.
Claims5
An adjustable external idle air bypass for an internal combustion engine's carburetor, said carburetor having one or more throttle blades, comprising
- a. a housing attached to the outside of said carburetor such that air can enter said carburetor through said housing downstream of the carburetor's throttle blades
- b. the housing having an opening at the end most distant from the carburetor through which air enters the housing
- c. said housing drawing air from outside the carburetor body which has not entered the carburetor's throttle bores
- d. an adjustable ball valve mounted in said housing for metering the amount of air entering said carburetor
- whereby the amount of air entering the engine at idle can be precisely metered without moving said throttle blades.
An adjustable external idle air bypass for an internal combustion engine's carburetor, said carburetor having one or more throttle blades and mounted to an intake manifold, comprising
- a. a housing attached to a carburetor spacer mounted between a carburetor and said intake manifold
- b. said carburetor spacer having a passage communicating between the inside of the carburetor spacer beneath the throttle blades and air outside the carburetor spacer
- c. the housing having an opening at the end most distant from the carburetor spacer through which air enters the housing
- d. the housing drawing air from outside the carburetor's body which has not entered the carburetor's throttle bores
- e. an adjustable ball valve mounted in said housing for metering the amount of air entering said carburetor spacer
- whereby the amount of air entering the engine at idle can be precisely metered without moving the throttle blades.
An adjustable external idle air bypass for an internal combustion engine's carburetor, said carburetor having one or more throttle blades and mounted to an intake manifold, comprising
- a. a carburetor spacer mounted between said carburetor and said intake manifold,
- b. a passage in said carburetor spacer communicating between the inside of the carburetor spacer beneath the throttle blades and air outside the carburetor spacer
- c. an adjustable valve mounted in said passage in the carburetor spacer for metering the amount of air entering the intake manifold
- whereby the amount of air entering the engine at idle can be precisely metered without moving the throttle blades.
An adjustable external idle air bypass for an internal combustion engine's carburetor, said carburetor having one or more throttle blades and mounted to an intake manifold, comprising
- a. a housing attached to said intake manifold such that air can pass through said housing and enter the intake manifold downstream of the throttle blades
- b. said housing having an opening at the end most distant from the intake manifold through which air enters the housing
- c. said housing drawing air from outside the carburetor body which has not entered the carburetor's throttle bores
- d. an adjustable ball valve mounted in said housing for metering the amount of air entering the intake manifold
- whereby the amount of air entering said engine at idle can be precisely metered without moving the throttle blades.
An adjustable external idle air bypass for an internal combustion engine's carburetor, said carburetor having one or more throttle blades and mounted to an intake manifold, comprising
- a. a passage in the wall of said intake manifold communicating between the inside of the intake manifold beneath the throttle blades and the outside air
- b. an adjustable ball valve mounted in said passage in the intake manifold for metering the amount of air entering said intake manifold
- whereby the amount of air entering the engine at idle can be precisely metered without moving the throttle blades.
Dependencies are inferred from the claim text.