James W Merrick

41129016, Sep 12, 1978

Apr 1, 1977

5/783610

Leonard Lee Chapin - El Paso TX
James Walter Merrick - El Paso TX

Autotronic Controls, Corp. - El Paso TX

F02M 3900

123139E

A fuel supply system supplies volatile fuel at a controlled rate to an air-fuel mixing chamber leading to a subatmospheric intake manifold of an internal combustion engine. Fuel is metered out by a metering gear pump supplied with fuel under pressure sufficient to maintain the fuel in its liquid state. An equalizer valve maintains the pressures on the two sides of the gear pump equal. This assures linearity of fuel rate as a function of pump speed. Pump speed is measured to provide a feedback signal to a controller. The controller compares the feedback with a control signal indicative of desired rate of fuel to develop driving power for application to the gear pump to drive the latter at the speed that supplies fuel at the desired rate.

41081277, Aug 22, 1978

Apr 1, 1977

5/783614

Leonard Lee Chapin - El Paso TX
James Walter Merrick - El Paso TX

Autotronic Controls, Corp. - El Paso TX

F02D 104
F02D 3500
F02D 3300
F02B 1500

123124R

An auxiliary air control system controls the flow of air into the intake manifold of an internal combustion engine. The system controls flow through a valve bypassing the main throttle valve to maintain an appropriate rate of air flow. A manifold pressure signal is fed back to a control circuit for comparison with a manifold pressure reference and development of a manifold pressure control signal for positioning the bypass valve to admit air at a rate maintaining the manifold pressure at the reference pressure and thus avoid low manifold pressures as cause excessive emissions of pollutants. A signal indicative of rate of air flow is fed back to the controller for comparison with an air flow reference and development of an air flow control signal for positioning the bypass valve to admit air at a rate maintaining total air flow at the reference rate, as for engine idle. The control signals are applied to admit air at the greater of the two rates. The air flow reference may be controlled as a function of any or all of engine temperature, added load, main throttle opening and starting.

40429237, Aug 16, 1977

Oct 16, 1975

5/622841

James W. Merrick - El Paso TX

Del Norte Technology, Inc. - Euless TX

G01S 902
G06F 1100

343 65LC

A radar position locator system uses a mobile and at least two stationary transceivers. The signals are validated by being stored and compared with previously received signals. If the comparison indicates that the received signal is within a range of a reasonably possible change, as compared to the previously received signals, it is accepted. Otherwise, it is rejected and the memory circuit which stored the signal for validation is backed up to the last previously stored valid signal. The stationary transceivers function somewhat as a surveyor's bench mark. Each transceiver is individually identified by a coded stream of radar pulses, as, for example, a stream of pulses transmitted at a predetermined transceiver identifying pulse repetition rate. A selected number of validated radar signals are transmitted between the mobile and stationary transceivers. The round trip transmission times of several of these signals are averaged, and a digital read out indicates the distance represented by such averaging.

45385734, Sep 3, 1985

Apr 13, 1983

6/484427

James W. Merrick - El Paso TX

General Dynamics Corporation - St. Louis MO

F02P 504

123418

An electronic controller for an internal combustion engine provides a ratio control signal corresponding to a respective air/fuel ratio, and responds to an air flow signal, a fuel flow signal and the ratio control signal to control fuel flow as to make the ratio of air flow to fuel flow substantially equal to said respective air/fuel ratio. The ratio control signal is developed from a base run ratio control signal as modified in response to various parameters such as engine temperature, manifold pressure, idle, manifold vacuum, fuel temperature, wide open throttle, engine speed, and start. The controller also provides speed-up circuit for promptly responding to change in air flow and dynamic braking for the fuel metering pump. The pump speed circuit includes a range extender. The controller further provides a timing advance control signal in response to air/fuel ratio and various engine parameters such as engine speed, manifold pressure, throttle position, engine temperature, air temperature, air/fuel ratio, and start.

44085826, Oct 11, 1983

Jan 30, 1981

6/229924

James W. Merrick - El Paso TX

General Dynamics Corporation - St. Louis MO

F02B 300
F02P 504
F02M 3900

123415

An electronic controller for an internal combustion engine provides a ratio control signal corresponding to a respective air/fuel ratio, and responds to an air flow signal, a fuel flow signal and the ratio control signal to control fuel flow as to make the ratio of air flow to fuel flow substantially equal to said respective air/fuel ratio. The ratio control signal is developed from a base run ratio control signal as modified in response to various parameters such as engine temperature, manifold pressure, idle, manifold vacuum, fuel temperature, wide open throttle, engine speed, and start. The controller also provides a speed-up circuit for promptly responding to change in air flow and dynamic braking for the fuel metering pump. The pump speed circuit includes a range extender. The controller further provides a timing advance control signal in response to air/fuel ratio and various engine parameters such as engine speed, manifold pressure, throttle position, engine temperature, air temperature, air/fuel ratio, and start.

43264930, Apr 27, 1982

Jul 26, 1979

6/060902

James W. Merrick - El Paso TX

Autotronic Controls, Corp. - El Paso TX

F02P 304

123606

In an ignition system for an internal combustion engine, current from a d. c. power supply is applied through an input inductor alternately through an ignition coil and through a circuit path in shunt of the ignition coil. The current through the ignition coil is made of substantially constant predetermined magnitude while flowing through the shunt circuit, preferably by means of a fixed ballast resistor in the shunt circuit. Switching of the current into the ignition coil is enabled during a predetermined fraction of the engine cycle, with no current applied to the ignition coil between predetermined periods. The current is switched back and forth between the two paths a plurality of times during each predetermined period.

42840538, Aug 18, 1981

Apr 24, 1978

5/899355

James W. Merrick - El Paso TX

Autotronic Controls Corp. - El Paso TX

F02B 300
F02M 3900

123497

An electronic controller for an internal combustion engine provides a ratio control signal corresponding to a respective air/fuel ratio, and responds to an air flow signal, a fuel flow signal and the ratio control signal to control fuel flow as to make the ratio of air flow to fuel flow substantially equal to said respective air/fuel ratio. The ratio control signal is developed from a base run ratio control signal as modified in response to various parameters such as engine temperature, manifold pressure, idle, manifold vacuum, fuel temperature, wide open throttle, engine speed, and start. The controller also provides a speed-up circuit for promptly responding to change in air flow and dynamic braking for the fuel metering pump. The pump speed circuit includes a range extender. The controller further provides a timing advance control signal in response to air/fuel ratio and various engine parameters such as engine speed, manifold pressure, throttle position, engine temperature, air temperature, air/fuel ratio, and start.

41311000, Dec 26, 1978

Apr 26, 1977

5/791098

James W. Merrick - El Paso TX

Autotronic Controls, Corp. - El Paso TX

F02P 100

123148E

A multi-strike spark discharge system which is combined with an internal combustion engine to produce a plurality of high voltage discharges across the spark gap of the engine. A timing signal associated with the engine is treated and used to actuate a duration control circuit which in turn actuates a repetition rate control circuit thereby controlling the duration and frequency of the discharges across the spark gap. At low rpm the repetition rate control apparatus provides several multi-discharges which enhances the combustion process and improves the operation of the combination.