Abstract: The present invention creates a method and an apparatus for blanking out interfering noise in connection with detecting knocking in an internal combustion engine. The following functions are performed: Forming a sensor signal integral value (KI) during a measurement time slot (MF) of the sensor signal of a knocking sensor; forming a correction value (DKI) for the sensor signal integral value (KI) corresponding to an interfering noise during the measurement time slot (MF); and subtracting the correction value (DKI) from the sensor signal integral value (KI) for forming a corrected sensor signal integral value (KI?) with the interfering noise blanked out.

Abstract: A compression ignition direct injection internal combustion engine comprising at least each one cylinder, a piston and an injection nozzle, the cylinder having an inlet port for inducing rotation of the incoming air about the axis of the cylinder and a combustion chamber or cavity in the form of a body of rotation disposed in the piston, said chamber having, below the crown of the piston, a constriction which divides the chamber into an upper and a lower part.

Abstract: A portable emergency ignition unit which will enable a person to get a vehicle to a service shop when the electronic ignition, or the points, condenser or coil has failed, or when the ignition key has been broken or lost. This portable ignition unit has solid state integrated circuit and transistor which give the unit a more reliable and hotter spark. The circuitry comprises a simple hookup of one lead wire going to the ground terminal of the battery, another lead wire going to the positive terminal, a third lead wire going to the starter solenoid and lead wires going to the distributor. To start the engine, the starter button on the emergency unit is depressed so that 60,000 volts is applied by the ignition unit to the rotor inside the distributor cap, which voltage the rotor will distribute to the spark plugs in firing order sequence. Then when the starter button is released, a voltage of 30,000 volts is continued to the rotor and thereby to the spark plugs.

Abstract: A transistor switch connected in series with the primary winding of the ignition coil permits and blocks current flow through the coil when in a conductive and non-conductive state respectively. Normally, the switch is "on" and "off" respectively in the presence and absence of an ignition current pulse furnished in synchronism with the rotation of the crankshaft of the engine. For increasing speeds, the time the switch is "on" prior to the ignition time is increased by switching it to the conductive state when the charge on a control capacitor reaches a predetermined charge. The charge on the control capacitor is changed in a first direction following receipt of each ignition signal. The rate of change of charge depends upon the resistance of the emitter-collector circuit of a first control transistor. The latter is, in turn, determined by the charge on an integrator capacitor which varies with changes in engine speed.

Abstract: Disclosed herein is a comparator circuit used in a system for controlling, in accordance with an air-fuel ratio signal from an O.sub.2 sensor arranged in an exhaust system of an internal combustion engine, the air-fuel ratio of the exhaust gas. The comparator has two inputs, one of which receives a signal having a phase which is the same as a signal from the O.sub.2 sensor, the other of which receives a delayed phase signal. The output of the comparator operates to provide, in accordance with the voltage level difference between the inputs, two deviation signals, one of which indicates that air-fuel ratio has deviated to the rich side of the air-fuel ratio the other of which indicates that the air-fuel ratio has deviated to the lean side of the air-fuel ratio.

Abstract: Disclosed is an electrostatic apparatus for controlling the volume of liquid flow through a passage, without the use of mechanically moving parts comprising a pair of electrodes fixedly disposed in a liquid passage with a short distance therebetween in the direction of liquid flow therethrough, and an electric circuit to produce an electric field between the electrodes. The circuit includes a controller to vary the strength of the electric field and/or reverse the polarity. A flow-constricting orifice may be interposed between the electrodes. The liquid in the electric field tends to migrate toward one of the electrodes, so that the volume rate of the liquid flow in the passage can minutely be varied with good responsiveness to an external control signal.

Abstract: A fuel supply control system for internal combustion engines properly controls the additional fuel supply at high speed operation and full load operation of the engine without causing overheating of the exhaust gas purifying device of the engine. The fuel supply control system includes a throttle switch for generating a load detection signal when the throttle valve is at its substantially full open position indicative of the heavy load condition of the engine and includes a high speed detecting device for generating a high speed detection signal when the amount of air sucked into the engine or when the intermittent signals from an ignition device exceeds a predetermined amount. In response to at least one of the detection signals, the additional fuel is supplied to the engine.

Abstract: To provide for an extended heat dissipating surface to an ignition coil, the coil is combined in a single housing structure with electronic control components, and located in a well or trough or tub-like housing structure, surrounded by a resin potting compound, but separated from the housing structure which, preferably, is a metal pressure or investment casting by a cushioning layer to provide for compensation of shrinkage, or expansion, upon differential changes between the housing and the coil due to heating, the extended housing structure also enclosing electronic circuit structures such as power components and printed circuit boards to thereby permit electrical association of the components with the ignition coil while, simultaneously, providing for a larger housing structure with increased heat dissipation capability.

Abstract: In an electronic ignition control apparatus for a combustion engine, a first memory is provided to store a data indicating a first parameter in relation to rotation speed of the engine to read out a value of the first parameter in accordance with an instant rotation speed of the engine, the first parameter defining an ascent of a linear equation representing a relationship between an optimum period of time for spark advance and an amount of air sucked into the engine in consideration with the rotation speed, and a second memory is provided to store a data indicating a second parameter in relation to the rotation speed to read out a value of the second parameter in accordance with the instant rotation speed, the second parameter defining an ordinates' intersection of the linear equation.

Abstract: An electronic control unit for regulating the air/fuel ratio of an internal combustion engine is disclosed. The electronic control unit has an open loop calibration for regulating air/fuel ratio that is corrected with a closed loop correction signal developed by an integral controller. The open loop calibration is a speed-density based schedule which is combined with corrections for special conditions to account for the operating parameters of the engine at any instant. Included in these special condition corrections are provision for start and warm-up features. The start feature includes an enrichment pulse generator whose pulses have a duration dependent upon the engine operating temperature and speed which are inhibited while the engine is above a predetermined RPM. The warm-up feature includes a time and temperature dependent enrichment which is linearly multiplied by an engine load factor.

Abstract: A combustion engine which may be either of the spark-ignition type or the compression-ignition type (Diesel engine) is so constructed that two separate charges having different compositions are injected into a combustion chamber during the intake stroke. The charges are maintained essentially separate, i.e., in stratified condition, during the compression stroke. The combustion process which ensues results in emission of substantially lower quantities of unburnt hydrocarbons, partially-burned hydrocarbons, carbon monoxide and nitrogen oxides than is the case with conventional engines operating either with non-stratified charges or with conventional exhaust gas recirculation systems. One of the charges includes recirculated exhaust gases.

Abstract: An EGR/ignition timing control system for an internal combustion engine having a vacuum advancer and an EGR system, wherein the control system includes a vacuum valve which is operated at the same critical vacuum as an EGR valve of the EGR system so as to trap, in cooperation with a check valve, the maximum vacuum supplied to the vacuum advancer as long as the EGR valve is opened and is effecting exhaust gas recirculation.

Abstract: An EGR/ignition timing control system for an internal combustion engine having a vacuum advancer and an EGR system, wherein the control system includes a vacuum switch which is operated at the same critical vacuum as an EGR valve of the EGR system and a solenoid valve which is operated by the vacuum switch so as to trap, in cooperation with a check valve, the maximum vacuum supplied to the vacuum advancer as long as the EGR valve is open and is effecting exhaust gas recirculation.

Abstract: A closed loop fuel control system for an internal combustion engine having in its exhaust system an exhaust composition sensor generating a signal indicative of air-fuel ratio in gases in the exhaust system and an integral controller providing integration on the generated signal for adjusting the ratio of air and fuel supplied to the engine, and a storage device which stores the output from the controller in response to a sensed particular engine operating parameter. The stored signal is later extracted in response to the sensing of the same engine operating parameter to rapidly vary the controller output.

Abstract: To operate an ignition control transistor, connected into the primary ignition coil under minimum saturation condition regardless of voltage level of the supply voltage, delivered, for example, from the battery of an automotive vehicle, at least one timing circuit is connected to the voltage supply to have a timing interval which varies as a function of supply voltage, the timing interval controlling the duration of current flow through the transistor as a function of supply voltage so that the transistor will be conductive for the required time to store magnetic energy in the coil, though not for an excessively long period of time regardless of the level of supply voltage within the limits normally experienced in automotive ignition systems.

Abstract: An internal combustion engine spark ignition system includes two inductors and a circuit for transferring energy from the inductors to a common spark circuit when current flow through the inductors is interrupted. Two transistors control current flow in the respective inductors and these are controlled by a control circuit which turns on and then off just one of the transistors when a normal spark is required, and which turns on both transistors and then turns these alternately on and off when an extended spark is required.

Abstract: A method of operating an internal combustion engine with a combustible gas which comprises the steps of: transforming a refined product of crude oil into a combustible gas in a gas generator by admitting said refined product into said gas generator with 60-120 % of the stoichiometric volume of oxygen needed to oxidize said refined product under the partial oxidation conditions of 400.about.800.degree.C with a space velocity ranging from 5000.about.50,000 V/VC .times. hr.sup..sup.-1 ; passing the combustible gas produced to an internal combustion engine to start and operate said internal combustion engine; and discharging the exhaust gases from said internal combustion engine.

Abstract: A fuel injection system for mixture-compressing, externally ignited internal combustion engines of the type employing continuous fuel injection with an induction tube. A measuring member, as well as an arbitrarily actuatable throttle butterfly valve are disposed in sequence within the induction tube. A fuel metering and quantity distribution valve assembly is controlled by the measuring member in proportion to air flow rate. Pressurized fluid, preferably fuel, provides a restoring force for the measuring member, via a control pressure circuit. At least one pressure control valve is provided for controlling the pressure in the control circuit in dependence on motor parameters. A heatable control element, operating in dependence on temperature, forms part of the control valve. The heatable control element, which may be a bimetallic spring, acts in opposition to the force of another spring.

Abstract: A device for the adjustment of the injection timing of the injection pump of an automotive diesel engine, wherein the injection pump is actuated by the diesel engine via a clutch comprising two coaxially arranged clutch halves relatively rotatably by means of a vane about an angle determined by end stops.

Abstract: The invention is concerned with an improved fuel injection control system which is useful with an internal combustion engine comprising a pair of pluralities of equal numbers of cylinders with said pairs of pluralities of cylinders being aligned side by side and including a pair of pluralities of fuel injection pumps in one-to-one relation with said cylinders. The improved system serves to control each of the pumps to operate simultaneously and to deliver a generally equal amount of fuel to each respective cylinder. The improved control system comprises a pair of control shafts, one aligned parallel to each of the pairs of pluralities of cylinders and generally perpendicular to the axis of each of said cylinders and spaced laterally therefrom.