Combined fuel injection and intake valve for electronic fuel injection engine systems

• US 4,020,803 A
• Filed: 10/30/1975
• Issued: 05/03/1977
• Est. Priority Date: 10/30/1975
• Status: Expired due to Term

• Current Assignee: The Bendix Corporation (Honeywell International Inc.)
• Original Assignee: The Bendix Corporation (Honeywell International Inc.)
• Inventors: Tomala, Ambrose, Thuren, John B.
• Primary Examiner(s): Cox, Ronald B.
• Application Number:
  US05/627,484
• Time in Patent Office: 551 Days
• Field of Search: 123/32 AE, 123/32 SP, 123/32 ST, 123/32 VN, 123/139 AW, 123/90.11, 123/75 B
• US Class Current: 123/275
• CPC Class Codes: F02B 19/10 with fuel introduced partly into pre-combustion chamber, and partly into cylinder
• CPC Class Codes: F02M 51/0617 having two or more electromagnets
• CPC Class Codes: F02M 51/0657 the body being hollow and its interior communicating with the fuel flow
• CPC Class Codes: F02M 51/0671 the armature having an elongated valve body attached thereto
• CPC Class Codes: F02M 51/08 specially for low-pressure fuel-injection
• CPC Class Codes: F02M 57/04 the devices being combustion-air intake or exhaust valves
• CPC Class Codes: F02M 61/08 the valves opening in direction of fuel flow F02M61/047 takes precedence
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A solenoid actuated combined fuel injection and intake valve supplies an air-fuel mixture to an electronic fuel injection system for an internal combustion engine. In one embodiment of the invention fuel injection is controlled dependent upon the operation of an auxiliary air-fuel intake valve while in another embodiment of the invention fuel injection is controlled independent of the operation of the auxiliary valve.

Claims

1. Combined fuel injection and air intake apparatus for an internal combustion engine, comprising:

a substantially hollow longitudinal extending housing mounted to the engine manifold;

longitudinally extending valve means supported within the housing and manifold;

an air-fuel mixing chamber within the manifold;

the valve means including a longitudinally extending channel;

fuel flow metering means supported within the channel in operative relation with the valve means;

a fuel inlet conduit in communication with the channel;

an air inlet conduit in communication with the mixing chamber;

solenoid means supported within the housing in cooperative relation with the valve means and fuel flow metering means, said valve means being seated to prevent communication between the mixing chamber and a combustion chamber within the manifold, and the fuel metering means being seated to prevent communication between the channel and the mixing chamber, when the solenoid means is de-energized;

energization of the solenoid means displacing the valve means and the fuel metering means to unseat both of said means, whereupon fuel is injected into the mixing chamber to provide an air-fuel mixture which is supplied to the combustion chamber; and

means arranged with the fuel metering means so that upon energization of the solenoid means the fuel metering means is displaced a predetermined distance with the valve means until the fuel metering means is stationary, and the valve means is displaced away from the stationary fuel metering means whereupon both of said means are unseated.

2. Apparatus as described in claim 1, wherein the means arranged with the fuel metering means so that upon energization of the solenoid means the fuel metering means is displaced a predetermined distance with the valve means until the fuel metering means is stationary includes:

biasing means for biasing the fuel metering means in the direction of the displacement so that the metering means is displaced with the valve means; and

stop means for preventing displacement of the fuel metering means with the valve means beyond the predetermined distance.

3. Apparatus as described by claim 2, including:

biasing means arranged with the valve means for returning the valve means to the seated position upon de-energization of the solenoid means, with the fuel metering means being displaced with the valve means away from the stop means and to its seated position.

4. Combined fuel injection and air intake apparatus for an internal combustion engine, comprising:

a substantially hollow longitudinal extending housing mounted to the engine manifold;

longitudinally extending valve means supported within the housing and manifold;

an air-fuel mixing chamber within the manifold;

the valve means including a longitudinally extending channel;

fuel flow metering means supported within the channel in operative relation with the valve means;

a fuel inlet conduit in communication with the channel;

an air inlet conduit in communication with the mixing chamber;

solenoid means supported within the housing in cooperative relation with the valve means and fuel flow metering means, said valve means being seated to prevent communication between the mixing chamber and a combustion chamber within the manifold, and the fuel metering means being seated to prevent communication between the channel and the mixing chamber, when the solenoid means is de-energized;

energization of the solenoid means displacing the valve means and the fuel metering means to unseat both of said means, whereupon fuel is injected into the mixing chamber to provide an air-fuel mixture which is supplied to the combustion chamber; and

the solenoid means including a first solenoid supported within the housing in cooperative relation with the valve means, a second solenoid supported within the housing in cooperative relation with the fuel metering means, energization of the first solenoid displacing the valve means in one direction to unseat said means, energization of the second solenoid displacing the fuel metering means in the opposite direction to unseat said means, and the displacement of the fuel metering means being independent of the displacement of the valve means.