Abstract: A throttle value spindle (3) is rotatably fixed to a throttle body (1). A recess is provided within the throttle body at one side of the throttle value spindle along the axial direction of the throttle valve spindle. A holder (6) is fixed to the throttle valve spindle within the recess and has brushes (7) at the opposite side of the throttle valve spindle, which rotates together with the throttle valve spindle. Resistors (12) are mounted on a ceramics circuit board (8) fixed on a housing (12). The housing engages with the recess in such a manner that the resistors contact with the brushes. When the brushes slide on the resistors corresponding to the rotation of the throttle value spindle, an electric signal is outputted continuously from the resistors.

Abstract: In a multi-cylinder engine control method and a control apparatus therefor, rotating speeds of the multi-cylinder engine at explosion strokes of the respective cylinders are detected for estimating combustion pressures in the respective cylinders, and deviations of the combustion pressures in the cylinders are derived from the estimated combustion pressures in the respective cylinders, so that ignition timings or fuel amounts supplied to the respective cylinders are regulated in response to the derived deviations of the combustion pressures.

Abstract: A power supply for a magnetron comprises an inverter circuit for converting a direct voltage obtained from a commercial frequency power source into an alternating voltage of a higher frequency by switching a switching element, a transformer with its primary winding connected to the inverter circuit, a voltage doubler with its input connected to a secondary winding of the transformer and with its output connected between a filament and an anode of a magnetron, and a resonant circuit formed in the voltage doubler for smoothing a current through the magnetron.

Abstract: A double carburetor including a primary suction conduit and a secondary suction conduit located in a suction passage of an internal combustion engine equipped with a turbosupercharger for supplying supercharged air to a combustion chamber by means of a compressor driven by a turbine rotated by the energy of exhausts has an air-fuel ratio correcting control valve for a primary main fuel system of the primary suction conduit and another air-fuel ratio correcting control valve for a secondary main fuel system of the secondary suction conduit. The carburetor also has a drive unit which is operative, when the turbosupercharger is put into action, to actuate the air-fuel ratio correcting control valves for the primary and secondary main fuel systems to correct the air-fuel ratio of fuel-air mixtures supplied to the engine by increasing fuel flow or decreasing air flow therethrough.

Abstract: A voltage regulator for a charging generator comprising an a.c. generator, a rectifier for converting the a.c. output of the a.c. generator to a d.c., a battery connected to the output of the rectifier, comparison means for comparing the battery voltage with a reference voltage of a reference voltage generation circuit and a power transistor controlled by the output of the comparison means and controlling a current flowing through a field coil of the a.c. generator.The reference voltage generation circuit comprises a voltage divider connected to a constant voltage power source and providing its divided voltage as the reference voltage, a plurality of transistors connected in parallel with a part of the voltage divider, and conduction control means for controlling the transistor in accordance with the ambient temperature so that the reference voltage is determined in accordance with the ambient temperature.

Abstract: An engine control apparatus having a microcomputer which controls an operating condition modifying means to modify the operating condition of the engine, wherein the absolute value .DELTA.C of the difference, C.sub.now -C.sub.old is calculated from a previously obtained basic amount of control C.sub.old, and a newly obtained basic amount of control C.sub.now, a correction coefficient K is determined which takes a value of 1 to nearly 0 as the .DELTA.C is increased, and then the C.sub.set ofC.sub.set =K.times.(C.sub.now -C.sub.old)+C.sub.oldis calculated as an actual basic amount of control.