Abstract: Injectors in an internal combustion engine are fed pulses via a gate which starts to transmit when the crank shaft of the engine is in a particular angular position and stops the transmission when the number of pulses applied to the injectors is equal to a number determined as a function of various operating parameters of the engine. The injectors remain open while pulses are being applied and close when the gate closes.

Abstract: There is provided an air-fuel ratio control system for internal combustion engines wherein the direction of deviation of the actual air-fuel ratio from a preset air-fuel ratio is determined by an oxygen concentration detector for detecting the concentration of oxygen contained in the exhaust gases from an internal combustion engine and an air-fuel ratio discriminating circuit, whereby air is injected from an air injection valve when the air-fuel ratio is low i.e. the mixture is rich and fuel is injected from a fuel injection valve when the air-fuel ratio is high i.e. the mixture is lean, thereby controlling the air-fuel ratio to a predetermined value.

Abstract: A distributor containing an apparatus for suppressing noise is described, comprising a first discharging gap which exists between electrodes of a distributor rotor and a stationary terminal, both of which are located in the distributor and a second discharging gap to which a resistance element is connected in series, wherein the second discharging gap and the resistance element are connected close to and also, electrically parallel to the first discharging gap.

Abstract: The invention concerns a method and apparatus for controlling the angle of advance of an internal combustion engine, in proportion to at least one parameter e.g. intake manifold vacuum, of the internal combustion engine. The main shaft of the engine has an impulse generating wheel and pickup which generates a fixed number of pulses (main pulses) during a particular revolution, the pulses representing a crank movement angle .psi. greater than any spark advance angle required. A fixed advance time t is converted into impulses the number of which varies with engine speed, and is thereafter increased or decreased also in proportion to said engine parameter. This final number is substracted from the main pulses, and the remaining pulses (trigger pulses) counted out during the next revolution from the commencement .psi. 0 of the angle .psi.. At the end of this count a firing pulse is emitted to cause a spark.

Abstract: An ignition system for internal combustion engines which comprises a magneto electric generator having a generating coil for producing two output signals different in phase, a capacitor which will be charged and discharged to operate a high tension coil, a switching element for discharging the capacitor, and a control circuit for controlling the switching element, one of the two output signals charging the capacitor, the other output signal controlling the switching element through the control circuit with the results that the control voltage of the switching element is not affected by the ambient temperature and the ignition system is made smaller in size, is serviceable for preventing excessive rate of rotation of the combustion engine, and can be molded into one unit.

Abstract: An ignition apparatus for supplying ignition energy of high voltage to the ignition plugs at the optimum ignition timing required of the internal combustion engine is disclosed, in which an electric or electronic adder in a control circuit begins to be energized after a time delay sufficient at least for completion of one ignition starting from the time of generation of at least one rotational angle signal occuring prior to the optimum ignition timing, the accumulating operation continues until the generation of the next rotational angle signal when a subtractor begins subtracting operation, and the next ignition is effected by causing electromagnetic induction in the ignition coils when the result of subtraction reaches a predetermined value.

Abstract: A two cylinder, two cycle engine for an outboard motor includes an alternator driven, capacitor discharge ignition system. The alternator includes an annular permanent magnet secured within a flywheel skirt and includes a pair of circumferential opposite poles with diametrical spaced neutral areas. The magnet is a flexible ferrite strip with a butt joint at one of the neutral areas. A stator assembly is mounted within the annular rotor and includes a semicircular core with a charging coil at each end. Each movement of the magnetic gap means past the coils generates a pulse. A trigger coil within a housing is mounted in coplanar relation between the charging coils, with a pole aligned with and spaced from the stator core. The housing is rotatably mounted and includes an integral cam for positioning a throttle lever.

Abstract: A system for the digital-electronic control of the inlet-, exhaust and possibly injection valves as well as of the ignition of internal combustion engines, especially of motor vehicle internal combustion engines, in which the valves are electromagnetically actuated and the respective crankshaft position is adapted to be detected digitally; a fixed value memory or storage device is provided in which at least for one cylinder the opening and closing instants of the inlet, exhaust, and possibly of the injection valves and/or of the ignition instants are at least partly adapted to be stored and selected as digital values coordinated to the respective operating conditions and corresponding to a predetermined crankshaft position in the form of data sets; a storage register is provided for each stored value of a data set to which this stored value is adapted to be transferred; a pulse comparison unit is also provided for each value of a data set in which the value either stored in the storage register or fixedly pre

Abstract: A fully transistorized control device for controlling spark ignition timings in an ignition system of an automotive internal combustion engine, characterized in that the ignition timings are advanced or retarded in accordance with the movement of the carburetor throttle valve during acceleration or deceleration of the vehicle and with the revolution speed of the engine during deceleration of the vehicle.

Abstract: Capacitor discharge ignition system for a spark-ignition internal combustion engine. The ignition system employs an ignition coil having primary and secondary windings wound on a ferromagnetic core, preferably made of a ferrite material. A first capacitor is connected in series with a spark gap and this series combination is connected across the ignition coil secondary winding. The ignition coil primary winding has a second capacitor coupled to it which capacitor is charged and then discharged in timed relation to engine operation. The first capacitor and ignition coil windings and construction are selected such that the second capacitor when discharged through the ignition coil primary winding produces ferroresonant oscillations in the secondary circuit of the ignition coil. This breaks down the spark gap and an alternating voltage, at the ferroresonant frequency, occurs.

Abstract: The injection timing of a fuel injection pump is controlled by displacement of a helical splined sleeve interconnecting a driving shaft and an injection pump drive shaft to vary the angle between the shafts. According to this invention the displacement of the sleeve is effected by an hydraulic actuator controlled by an electronic circuit which is responsive to a number of engine operating parameters and which receives a feedback signal from a detector, preferably magnetic, of the actual relative angular displacement between the shafts to ensure that the actual angle between the shafts is that required by the operating parameters.