US1960432A

US1960432A - Carburetor control for motor cars

Info

Publication number: US1960432A
Application number: US424496A
Authority: US
Inventors: Aubrey W Barker; Barrie R Barker
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-01-30
Filing date: 1930-01-30
Publication date: 1934-05-29
Anticipated expiration: 1951-05-29

Description

May 29, 1934- A. w. BARKER ET AL CARBURETOR CONTROL FOR MOTOR CARS Filed Jan. 30, 1930 2 Sheets-Sheet l urfy /l/ a Ear/v6 uur am@ May 29, 3934 A. w. BARKER ET AL CARBURETOR CONTROL FOR MOTOR CARS 2 sheets-sheet 2 Filed Jan. 50, 1930 FUEL r H. M a mn iw; s Wim y@ UNITED STATES PATENT OFFICE CARBURETOR CONTROL FOR MOTOR CARS Aubrey W. Barker and Barrie R. Barker, Glad wyne, Pa.

Application January 30, y1930, Serial No. 424,496

7 Claims.

Objects of the present invention are to eliminate fuel waste through the idling jet or jets when a motor car is coasting down grade with the throttle closed and the clutch engaged; to effect economy in the use of gasoline or like iiuid fuel; to automatically cut off the supply from the carburetor to the engine when the vehicle is coasting against a running engine and to permit the fuel to flow to the idling jet only when the motor requires it.

To these and other ends hereinafter set forth or appearing, the invention, generally stated, comprises means for eliminating fuel waste through the idling jet of a carburetor associated with a throttle valve and with an engine intake manifold and clutch, whichinclude a normally open valve arranged between the bowl of the carburetor and the Venturi tube, an electro-magnetic device, for example, and its circuit connections adapted to effect closing of the valve, and a circuit controller for the circuit connections having an actuating diaphragm exposed to and operated by the high degree of vacuum in the manifold when the throttle is closed and the` clutch engaged, asin coasting. A mechanically connected device responsive to the vacuum in the intake manifold may also be used.

I'he invention also comprises the improvements to be presently described and nally claimed.

In the following description reference will be made to the accompanying drawings forming part hereof and in which Figure 1 is a diagrammatic and schematic sectional view generally in elevation illustrating features of the invention.

Figure 2 isa similar view illustrating a modification of the invention, and

Figure 3 is a diagrammatic view showing a modification which is mechanically operated.

Referring to the drawing, and more particularly to Figure 1, 1 indicates an idling jet or jet tube. 2 is the throttle valve. 'I'he clutch is not illustrated because it is too well understood to require illustration or description. These are the ordinary provisions of a power plant of an automobile or like vehicle or conveyance. 4 is a normally open valve arranged between the bowl 5 of the carburetor and the idling jet 1 and the main jet 18. As shown the valve consists of a ball 6 adapted by gravity to normally occupy the cavity provided for it in the passage '1 that extends from the carburetor bowl and communicates with the idling jet passage 1. which, when energized, moves the ball into position for closing the passage 7 and thus sealing 8 is an electro-magnet oif the idling jet 1 and the main jet 18. The circuit connections for the electro-magnet are indicated as including the storage battery 9 and the conductors 10 and 11. 12 is a circuit controller and it includes an actuating diaphragm 13 ex- 60. posed to the atmosphere on one face and exposed on the other face to pressure conditions in the internal combustion engine by Way of the tube or connection 14.

The mode of operation may be described as follows:

With the engine running and the clutch in engagement and the car coasting, the throttle 2 is closed. Under these conditions there is a high degree `of vacuum in the -manifold 3, so that atmospheric pressure on the diaphragm causes it,

'in the present instance by shifting the upper contact of the controller 12 into engagement with the lower contact, to close the circuit, yenergize the electro-magnet 8, and close the valve 4, thus preventing fuel :from reaching the idling jet 1 and consequently effecting a saving of fuel. This saving of fuel is quite substantial and in at least one instance has amounted to 10%.

The construction and mode of operation of the modification illustrated in Fig. 2 are substantially as above described except that the ball valve 6a is spring pressed, for example, by the spring 15 into open position and is closed by the magnet 8a when energized. Furthermore the parts referred to are arranged in a fitting 17 adapted to be mounted through the wall of the Venturi tube so that a device embodying features of the invention can be applied to existing structures. In this modification only the idling jet 1 is closed, 90 it being preferable to leave the main jet 18 full of fuel to provide for immediate speeding up of the engine on opening the throttle valve 2.

The modification shown in Figure 3 operates kin the same manner as the preceding modications save that the valve is mechanically operated from the diaphragm 13 instead of being electrically operated. Also in this modification the valve 6b is placed directly opposite the idling jet 1 and may be arranged so as to shut off only the idling jet 1 from the fuel supply passage 7 or to disconnect both the idling jet 1 and the main jet 18 from the passage 7. It is preferable to only shut off the idling jet 1 as then fuel is sup- 105 plied to the main jet 18 when the throttle valve 2 is opened.

In this modification the diaphragm 13 is connected to the intake manifold by a pipe 14 as in the preceding modifications. The diaphragm 110 13 is also connected by the lever 19 to the valve 6b and actuates the valve 6b thereby.

It will be obvious to those skilled in the art to which the invention relates that modifications may be made in details of construction and arrangement and matters of mere form without departing from the spirit of the invention which is not limited to such matters or otherwise than the prior art and the appended claims may require.

We claim:

l. Means for eliminating fuel waste through the idling jet of a carburetor associated with a throttle valve and with an engine intake conduit comprising, in combination, a normally open valve arranged between the bowl of the carburetor and the idling jet, an electromagnetic device and its circuit connections adapted to effect closing of the valve, and a circuit controller for said circuit connections having an actuating dia# phragm exposed and responsive to a high degree of vacuum in the conduit when the throttle is closed.

2. Means for eliminating fuel waste through the idling jet of a carburetor associated with a throttle valve and with an engine intake conduit comprising, in combination, a ball valve arranged between the bowl of the carburetor and the idling jet and adapted to open by gravity, an electromagnet and its circuit connections adapted to close the ball valve when energized, a circuit maker and breaker interposed in said circuit connections, a diaphragm for normally opening the circuit breaker, and connections between one face of the diaphragm and the interior of the conduit.

, 3. In a device for preventing unnecessary consumption of fuel in an internal combustion en gine, said device including an internal combustion engine which forms a high vacuum when the engine is turning over under light load or under no load, the combination of a carburetor for supplying fuel and air to said engine, a throttle valve in said carburetor, an idling jet in said carburetor between said engine and said throttle valve through which fuel but no air is supplied to said engine, a valve controlling the supply of fuel to said idling jet, means responsive to the degree of vacuum in said engine for closing said valve when the vacuum has risen to a predetermined degree without admitting air to said engine, and means for opening said valve when said first mentioned means is not operating thereby supplying fuel but no air through said idling jet to said engine.

4. In a device for preventing unnecessary consumption of fuel in an internal combustion engine,I said device including an internal combustion engine which forms a high vacuum when the engine is turning over under light load orunder no load, the combination of, a carburetor for supplying fuel and air to said engine, an

idling jet in said carburetor through which fuel but no air is supplied to said engine, a main jet in said carburetor for supplying fuel to said engine, a valve controlling the supply of fuel to said idling jet and independent of the supply of fuel to said main Jet; means responsive to the degree of vacuum in Asaid engine for closing said valve when the vacuum has risen to a predetermined degree without admitting air to said engine, and means for opening said valve when said first mentioned means is not operating thereby supplyingv fuel but no air through said idling jet to said engine.

5. Means for eliminating fuel waste through the idling jet of a carburetor associated with a throttle valve and with an engine intake conduit comprising, in combination, a valve arranged between the bowl of the carburetor and the idling jet and stressed to open position, an electromagnet and its circuit connections adapted to close the valve when energized, a normally open circuit maker and breaker interposed in said circuit connections, and means responsive to the degree of vacuum in said intake conduit for closing said circuit breaker when the vacuum has risen to a predetermined degree.

6. In a device for preventing unnecessary consumption of fuel in an internal combustion engine, said device including an internal combustion engine which forms a high vacuum when turning over under light load or under no load and a higher vacuum when driven by external means with the throttle closed, the combination of a carburetor for supplying a combustible mixture of air and fuel to said engine, a throttle valve for controlling the normal supply of combustible mixture from said carburetor to said engine,

means for introducing air to said carburetor, means for introducing fuel to said carburetor, means for supplying an auxiliary supply of combustible mixture to said engine when said engine is under light load or no load, a valve controlling the entire supply of fuel to said last mentioned means, and means for actuating said valve arranged to close said valve while a predetermined degree of vacuum exists in said engine without admitting air to said engine.

'1. In a device for preventing unnecessary consumption of fuel in an internal combustion engine, said device including an internal combustion engine which forms a high vacuum in turning over under light load or under no load, the combination of, a carburetor for supplying a combustible mixture of air and fuel to said engine, a throttle valve for controlling the normal supply of combustible mixture from said carburetor to said engine, means for introducing air to said carburetor, means for introducing fuel to said carburetor, means for supplying an auxiliary supply of combustible mixture to said engine when AUBREY W. BARKER. BARBIE R. BARKER.