Ignition spark vacuum advance system

Claim 2

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, and means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential.

Claim 3

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for inhibiting said means responsive to said control signal.

Claim 4

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for inhibiting said means responsive to said control signal.

Claim 5

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an igniTion spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, an electrical switching device having normally open current carrying elements operable to an electrical circuit closed condition in response to said control signal, and means for connecting said current carrying elements of said electrical switching device and said operating coil of said two-way valve in series across said source of direct current potential.

Claim 6

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an igniTion spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, an electrical switching device having normally open current carrying elements operable to an electrical circuit closed condition in response to said control signal, and means for connecting said current carrying elements of said electrical switching device and said operating coil of said two-way valve in series across said source of direct current potential.

Claim 7

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, an electrical switching device having normally open current carrying elements operable to an electrical circuit closed condition in response to said control signal, means for connecting said current carrying elements of said electrical switching device and said operating coil of said two-way valve in series across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for diverting said control signal from said electrical switching device.

Claim 8

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, means responsive to said speed signal and said reference signal for producing a control signal during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, an electrical switching device having normally open current carrying elements operable to an electrical circuit closed condition in response to said control signal, means for connecting said current carrying elements of said electrical switching device and said operating coil of said two-way valve in series across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for diverting said control signal from said electrical switching device.

Claim 9

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and opErable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, an operational amplifier having an inverting input circuit, a non-inverting input circuit and an output circuit for producing a control signal upon said output circuit thereof during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means for applying said direct current speed signal to said inverting input circuit of said operational amplifier, means for applying said direct current reference signal to said non-inverting input circuit of said operational amplifier, and means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential.

Claim 10

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and opErable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, an operational amplifier having an inverting input circuit, a non-inverting input circuit and an output circuit for producing a control signal upon said output circuit thereof during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means for applying said direct current speed signal to said inverting input circuit of said operational amplifier, means for applying said direct current reference signal to said non-inverting input circuit of said operational amplifier, and means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential.

Claim 11

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmoosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, an operational amplifier having an inverting input circuit, a non-inverting input circuit and an output circuit for producing a control signal upon said output circuit thereof during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means for applying said direct current speed signal to said inverting input circuit of said operational amplifier, means for applying said direct current reference signal to said non-inverting input circuit of said operational amplifier, means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for inhibiting said means responsive to said control signal.

Claim 12

An ignition spark vacuum advance system for use with motor vehicle internal combustion engines comprising in combination with a carburetor having a spark advance port, an ignition distributor having an ignition spark advance mechanism operated by a spark advance vacuum unit having a vacuum port and a source of direct current potential, a vacuum line extending between said carburetor spark advance port and said spark advance vacuum unit vacuum port, a two-way valve having an operating coil included in said vacuum line which is normally in a first condition to establish a vacuum connection between said carburetor spark advance port and said spark advance vacuum unit vacuum port and operable, upon the energization of said operating coil, to a second condition to vent said vacuum advance unit vacuum port to atmoosphere, means for producing a direct current speed signal of a magnitude proportional to vehicle speed, means for producing a direct current reference signal of a predetermined substantially constant magnitude, an operational amplifier having an inverting input circuit, a non-inverting input circuit and an output circuit for producing a control signal upon said output circuit thereof during vehicle acceleration until said vehicle has accelerated to a speed of a selected magnitude and during deceleration after said vehicle has decelerated to a speed less than the selected magnitude, means for applying said direct current speed signal to said inverting input circuit of said operational amplifier, means for applying said direct current reference signal to said non-inverting input circuit of said operational amplifier, means responsive to said control signal for completing an energizing circuit for said operating coil of said two-way valve across said source of direct current potential, and means responsive to engine temperatures less than and greater than a selected engine temperature range for inhibiting said means responsive to said control signal.