Abstract: There is disclosed an apparatus for controlling the rotational speed of a Stirling engine in such a way that effective use is made of dump power produced when the speed of the engine is maintained constant. The apparatus comprises a tank in which a working medium is stored, a first valve mechanism, a second valve mechanism, a dynamo for producing alternating current during operation of the engine, a load to which the alternating current is applied, an accessary receiving the alternating current via a distributor, and a control unit. When a change in the electric power consumed by the load is detected, the control unit actuates the first or second valve mechanism to force the working medium out of the tank into the working space in the engine or vice versa such that the speed of the engine corresponds to the change in the electric power. When the engine speed increases, the resulting increase in the electric power is consumed for the accessary such as a cooling fan or a battery that powers the starter.

Abstract: A method for controlling a consumer driven by an internal combustion engine 1 is suggested, especially a compressor 2 of an air-conditioning system of a motor vehicle, in which before the compressor is put into operation, the power output of the internal combustion engine is increased by a fixed amount before the compressor is switched on after a predetermined delay. The method is characterized in that the load occurring on the internal combustion engine as a result of the operation of the consumer is determined before the consumer is put into operation, and in that the power output of the internal combustion engine is increased as a function of the expected load, and the consumer is then put into operation. Preferably, to determine the expected load on the internal combustion engine, the pressure in the high-pressure region of the compressor is measured by means of a sensor 6.

Abstract: Pulsations in an electrical parameter on the output of a synchronous generator powered by a Diesel engine at a frequency which differs from that of the synchronous generator's natural frequency are smoothed out, whereby, a controlled variable (X) corresponding to the pulsation is tapped from the stage formed by the Diesel engine (5), the generator (3), and the network (4). From this controlled variable (X) and a reference input (W), a control difference (.DELTA.) is calculated, by means of which a correcting variable (y) is set in the stage indicated for the purpose of control.

Abstract: An engine-equipped apparatus including a control-display device which contains computing circuits into which is fed such data as the AC amperage data from an apparatus having an AC generator, and devices for displaying the data converted by these computing circuits. The control-display device is provided with a connection location capable of being freely connected to and disconnected from the main body of the apparatus through the use of a cable and multi-pin plug and socket.

Abstract: An automatic control system for a power plant including a torque such as a steam turbine and a generator for converting the generated torque into electrical output.

Abstract: In a prime mover, an improved control system is provided for accelerating and decelerating the prime mover through periods of critical operation.

Abstract: An engine has an output shaft which is connected with a generator and a motor. A control device is provided to operate the generator in a high output torque period and to operate the motor in a low output torque period in an operating cycle of the engine. Thus, the generator applies a negative torque to the output shaft whereas the motor applies a positive torque to the output shaft to thereby moderate the output torque fluctuations.

Abstract: An assembly for stabilizing engine operation in an engine-generator set includes a fuel supply and fuel lines to first and second banks of engine cylinders. A fuel valve is positioned in the fuel line to the first bank of cylinders and is controlled by a normally open switch and a normally closed switch. In the closed position of the fuel valve the cylinders in the first bank act as a load on the cylinders in the second bank. The assembly includes a voltage sensor for sensing voltage generated by the engine-generator set. Once voltage exceeds a predetermined level, the sensor terminates fuel flow to the first bank. The assembly also includes a load sensor for sensing load imposed on the engine-generator set. Once the load increases above a first predetermined level, the load sensor allows flow of fuel to the first bank of cylinders and all cylinders are working.

Abstract: An automatic control system for such a prime mover as a vehicle engine is adapted to automatically stop the prime mover when such a driven device as a vehicle is arrested, to automatically drive the prime mover in response to operation of a starting mechanism for effecting start of the driven device, and to maintain the prime mover in its operative condition when the driven device is moving. The control system is arranged to be inoperative in an expected occurrence of an error in operation of a setting switch for the system and to indicate the operative condition of the system under normal control of the setting switch.

Abstract: A power supply monitor is disclosed for monitoring the finely regulated voltage in a two-stage tracking power supply which is driven by a gas turbine engine and which has a coarsely regulated and a finely regulated stage. A reference voltage is generated using power taken from the coarsely regulated stage and the reference voltage is compared with a voltage derived from an output of the finely regulated stage. If an unacceptable difference between the compared voltages is detected, controls are activated which prevent acceleration of the engine. The monitor is activated only after the engine reaches a selected speed and testing circuitry is provided.

Abstract: A drive system for an automotive vehicle, especially an industrial floor vehicle such as a forklift truck, comprises an internal combustion engine, preferably a diesel engine, whose speed-controlling element (e.g. fuel-injection pump) in connected to a speed-setting member (e.g. a drive pedal) and propels an externally energized direct-current generator which, in turn, is connected to an externally energized direct-current motor driving the load, e.g. at least one wheel of the vehicle. According to the invention, the speed-controlling element of the internal combustion engine is provided with a speed-setting signal generator, the output shaft of the internal combustion engine with an engine shaft-speed signal generator and the output shaft of the direct current motor with a motor shaft-speed signal generator.

Abstract: An internal combustion engine for driving a generator has a governor for maintaining the speed of the engine at a predetermined operating speed. An idle control circuit is provided for overriding the governor during no load conditions. This is accomplished by an electromagnetic coil controlled by a high sensitivity electronic switching element.

Abstract: An anti-stall control for use in a system having an engine which drives a pump to supply fluid under pressure to a motor and including means responsive to a control voltage for altering the flow of fluid to the motor. The anti-stall control senses the speed of the engine and generates a voltage proportional thereto, the speed voltage being compared to a reference voltage for providing a D.C. signal proportional to the speed voltage. A quick dump/slow recovery circuit is responsive to a decrease in the amplitude of the D.C. signal for generating a control voltage which decreases at a fast rate to prevent overloading of the engine, the circuit being responsive to an increase in the D.C. signal for generating a control voltage which increases at a slow rate to improve the stability of the system.

Abstract: A system for regulating the engine speed so as to maintain the voltage between terminals of a battery at a constant value. A constant-voltage circuit is connected at a terminal of the battery for supplying a constant voltage. A comparator is provided for comparing the voltage between the terminals of the battery with the constant voltage and for producing an output signal in dependency on the difference between the input voltages thereto. The output signal is fed to an actuator through a driving circuit. The actuator operates in response to the driving signal from the driving circuit for opening or closing the throttle valve for regulating the engine speed, so that the voltage between the terminals of the battery may be maintained at a constant level.

Abstract: Apparatus and method for the partial load operation of a combined gas turbine and steam turbine plant, including a shaft being connected to the gas turbine and drivable at a given nominal speed of rotation, a first generator being connected to the shaft and electrically connectible to an electric network, a compressor being connected to the shaft and connected upstream of the gas turbine in gas flow direction, a heat exchanger having an output and a variable heat supply and being connected upstream of the gas turbine in gas flow direction, a steam generator for the steam turbine being connected downstream of the gas turbine in gas flow direction for receiving exhaust gases therefrom, a second generator being connected to the steam turbine and electrically connectible to the electric network for supplying given nominal power thereto along with the first generator, means for giving to the electric network and taking away from the network at least part of the nominal power if the shaft rotates at less than the n

Abstract: A reference signal generator generates a variable reference signal with which a signal indicating the momentary rotational speed of the prime mover (such as a gas turbine) for a generator is compared, to produce a rotational speed control signal in accordance with a signal representing the load applied to the prime mover, so as to compensate for the rotational speed fluctuation caused by load connection by holding the rotational speed of the prime mover above the desired level during no-load operation and at the desired level under load.

Abstract: A load connection command signal is utilized to raise the rotational speed of a power turbine of an electric generator above a rated speed thereof while the same signal is used to connect load to the generator after a predetermined period of time. A load disconnection command signal is utilized to lower the rotational speed of the power turbine below the rated speed while the same signal is used to disconnect load from the generator with a time delay.

Abstract: A starting apparatus for a gas turbine-generator mounted on an electric motor driven motorcar includes a gas turbine and an A.C. generator with A.C. output terminals coupled directly to the turbine. A rectifier with D.C. output terminals is connected to the A.C. output terminals of the A.C. generator. A battery device is connected to the D.C. output terminals of the rectifier. An inverter has D.C. input terminals connected to the floating battery device in parallel and A.C. output terminals from which an A.C. output is derived. A control circuit is connected to the inverter for controlling the speed of the motorcar. At least one A.C. motor energized by the A.C. output of the inverter for driving the motorcar is provided. A switching device connects the A.C. output terminals of the inverter to the A.C. output terminals of the A.C. generator when the gas turbine is started and connects the A.C. output terminals to the A.C. input terminals of the A.C. motor after the gas turbine is started.

Abstract: There is disclosed a heat-engine/battery-electric hybrid power system for use in a low-pollution, low-fuel consumption vehicle. The engine shaft is coupled by a fixed mechanical ratio to the shaft of a dynamotor, the field current of the dynamotor being controlled by the accelerator pedal for drawing power from a battery to aid the engine in the turning of the driveshaft or for drawing power from the driveshaft to recharge the battery. A feedback loop is employed for continuously adjusting the throttle so that the manifold vacuum remains constant. In this manner, the ratio of the engine exhaust to the driveshaft speed remains substantially constant. The engine exhaust is directed to a thermal reactor, secondary air for which is derived from an air pump driven by the engine shaft. The ratio of the exhaust gas to the secondary air is thus substantially constant independent of the shaft speed so that the thermal reactor is maximally effective at all vehicle speeds.