Abstract: A hot wire type air flow meter employing a hot wire temperature dependent resistor having a heat generating portion and a non-heat generating portion comprising a feedback control circuit controlling the hot wire temperature dependent resistor temperature constant which includes a phase shift circuit for inducing a sufficient phase delay in feedback signals thereby compensating a second stage delay in output signals of the air flow meter caused by the thermal inertia of the non-heat generating portion and enhancing response characteristic of the air flow meter.

Abstract: A generator generates two voltage outputs which have different voltage levels. One voltage output from the generator is used for operating a power steering apparatus. Another voltage output from the generator is used for charging a battery which supplies current to other loads.

Abstract: An automatic transmission apparatus for vehicles include a continuously variable transmission of belt type, and a control unit supplied with a plurality of data relating to a vehicle. The control unit computes output data on the basis of the input data, and generates control signals for changing a pulley width of the continuously variable transmission of belt type, for changing an effective diameter of the pulley and for substantially continuously controlling the transmission ratio on the basis of the output data. The control unit comprises a control signal generator for deciding whether the vehicle is started or not and for generating a control signal to temporarily narrow the pulley width when it is decided that the vehicle is started.

Abstract: A pinion clutch for a starter is constituted such that a spline tube having first and second helical splines on the inner and outer surfaces thereof respectively is disposed on a drive shaft, the inner surface of the spline tube is engaged to the drive shaft by the first helical spline, while the outer surface of the spline tube is engaged to a clutch-outer by the second helical spline, and rollers are disposed between a clutch-inner which is integrally formed with a pinion and the clutch-outer so that a one-way clutch function is realized. The pinion clutch comprises a meshing spring and an impact torque absorbing spring urging the spline tube and the clutch-outer in a direction in which the spline tube and the clutch-outer move away from each other are in series disposed between the spline tube and the clutch-outer. The meshing spring and the impact torque absorbing spring have individual spring constants.

Abstract: An apparatus for controlling a throttle valve comprises a motor for rotating a throttle valve so as to adjust the valve opening degree, a gearing disposed between the motor and the throttle valve for transmitting driving force of the motor to the throttle valve, and a return device serving to return the throttle valve to a regular set position thereof. The return device includes a tension spring.

Abstract: An electromagnetic fuel injector comprising: a movable member with a valve body provided at one end and an armature made of a magnetic material provided at the other end; a cylindrical core made of a magnetic material, the core being disposed in such a manner that the distal end thereof opposes the armature; an electromagnetic coil disposed around the cylindrical core for producing an electromagnetic force between the cylindrical core and the armature when the coil is energized; and guide sections for guiding the movement of the movable member in the axial direction, the guide sections being disposed in the vicinities of the valve body and the armature of the movable member. The guide section provided in the vicinity of the armature comprises a sliding member made of a non-magnetic material and disposed between the armature and the core.

Abstract: An electromagnetic fuel injection valve in which an area of an annular gap formed by a ball valve and a valve seat when the ball valve is lifted is made smaller than cross sectional area of grooves provided on a fuel swirling element which gives fuel supplied a swirling force and further is made larger than a cross sectional area of a fuel injection port, whereby the fuel is injected with an excellent atomizing characteristic.

Abstract: An air flow meter for an internal combustion engine comprises an intake air passage of an internal combustion engine, which is composed of a primary flow passage and an auxiliary flow passage having a specified length and a portion adapted to project within the primary flow passage and made substantially parallel to the direction of the air flow passing through the primary flow passage. A sensor for measurement of an intake air flowrate is disposed within the auxiliary flow passage. The primary flow passage is provided with a portion where the cross-sectional area of the primary flow passage is gradually reduced. In the vicinity of this cross-sectional area reducing portion, there is disposed an outlet of the auxiliary flow passage.

Abstract: A compressor comprises a plurality of pistons each received in one of through holes formed in a cylinder block fixedly mounted on a rotational shaft which is journaled by a stationary part, and a wobble plate arranged in such a manner as to oppose and be inclined with respect to an end surface of the cylinder block. The wobble plate is supported on the rotational shaft for wobbling movement and rotatably holds one ends of the pistons. There are provided a pair of driving pins having one end portions secured to the cylinder block and extending in parallel with the rotational shaft, and the other ends slidably engaging the wobble plate through spherical bearings. The wobble plate, the driving pins and the spherical bearings constitute in cooperation a piston driving mechanism portion.

Abstract: A fuel supply control system for internal combustion engines with an air flow mounted in a intake manifold, a throttle valve opening sensor and a control unit, in which at quick acceleration the control unit generates a correction air flow quantity signal in accordance with the change of the output of the throttle valve opening sensor and corrects the output signal of the air flow sensor by the correction air flow quantity signal, whereby estimating real air flow quantity sucked into the engine cylinders.

Abstract: A fuel injection control apparatus for an internal combustion engine has a controller, which includes a microprocessor for executing a predetermined processing in response to fundamental parameters representing the operational condition of the engine, produces a basic fuel injection pulse on the basis of a suction air quantity and a rotational speed of the engine and corrects the basic fuel injection pulse in accordance with the degree of acceleration or deceleration required, thereby to provide a fuel injection pulse applied to a fuel injector. The microprocessor is provided with membership functions varying with respect to acceleration or deceleration and determines a correction coefficient for correcting the basic fuel injection pulse on the basis of the degree of acceleration or deceleration required in accordance with fuzzy reasoning using the membership functions.

Abstract: In a fuel supply control apparatus for an internal combustion engine having an A/F ratio feed-back control with a learning function, a difference between an A/F ratio detected by an oxygen sensor and the stoichiometric value is obtained and divided into an A/F ratio correction coefficient and an A/F ratio deviation coefficient in accordance with a predetermined gains ratio. The former coefficient is stored in an area of a correction map corresponding to an operational condition of the engine at that time and the latter coefficient is accumulated in an additional storage. Upon determination of an amount of fuel to be supplied, a former coefficient is read out from the map in response to the operational condition and added to the latter coefficient read out from the additional storage to form a correction value, which is used for correcting a preliminary fuel supply amount obtained in accordance with the operational condition to determine a final fuel supply amount.

Abstract: A generator generates two voltage outputs which have different voltage levels. One voltage output from the generator is used for operating a power steering apparatus. Another voltage output from the generator is used for charging a battery which supplies current to other loads.

Abstract: An engine control system comprises a crank angle sensor for generating reference signals, each outputted at a first predetermined rotational angle interval of the engine and position signals for controlling the ignition timing, an angle ignition signal generator for generating an angle ignition signal on the basis of the reference signal and the position signal, a clock signal generator for generating clock signals with a constant time period, a time ignition signal generator for generating a time ignition signal on the basis of the reference signal and the clock signal, abnormality detector for detecting abnormality in the position signals and outputting selecting means for selecting to output the angle ignition signals in a normal state and the time ignition signals when the abnormality in the position signals is detected, whereby the ignition timing is controlled in both normal and abnormal states of the position signal.

Abstract: An electric power steering apparatus for a vehicle comprises a steering shaft, an electric motor operable to generate an auxiliary steering force having a magnitude corresponding to a value of electric current supplied thereto, a steering toque sensor for detecting a steering torque applied to the steering shaft, a vehicle weight sensor for detecting a vehicle weight, and a control device. The control device is constituted to increase and decrease the value of electric current to be supplied to the electric motor in accordance with not only the increase and decrease of the value detected by the steering torque sensor but also the increase and decrease of the value detected by the vehicle weight sensor.

Abstract: A multi-shade color liquid crystal display apparatus wherein a number of striped color liquid crystal elements are arranged in parallel in one direction. A color filter for each color liquid crystal element is arbitrarily selected to have one color and the ratios of the widths of the color filters to the pitches of the filters for each of a plurality of blocks of the striped color liquid crystal elements are made different from one another while maintaining one of the widths and pitches constant so that light and dark shades of the color are obtained in different blocks.

Abstract: There are provided a first ignition timing table for high-octane fuel and a second ignition timing table for low-octane fuel. When the second table is switched over to the first table, there is at first the difference in between basic ignition timings according to the first and second tables, and then the difference is reduced with time at a constant rate. An actual ignition timing during the switchover of an ignition timing table is determined by subtracting the reducing difference from the basic ignition timing according to the first table. The actual ignition timing when knocking is detected is compared with a predetermined threshold. If the former exceeds the latter, the second table is switched over to the first table, and otherwise the second table is maintained, whereby the actual ignition timing can be changed smoothly even during the switchover of an ignition timing table.

Abstract: Disclosed is a method and apparatus for controlling a throttle valve driven by a D.C. motor in an internal combustion engine, in which the D.C. motor is driven until a valve position sensor detecting the angular position of the throttle valve generates an output signal which coincides with the output signal of an accelerator pedal sensor detecting the amount of depression of an accelerator pedal of a vehicle. The value of motor current required for causing very slight displacement of a return spring provided for returning the throttle valve toward a predetermined angular position is utilized for automatically compensating various factors of fluctuation attributable to friction, inertia, etc. of means driving the throttle valve. A small-capacity microprocessor is used to control the D.C. motor so that the throttle valve can operate with high accuracy and high-speed response capability without being adversely affected by changes in the operating condition as well as secular variations.

Abstract: A heat wire type airflow meter having a resistance element disposed within an airflow, the rate of which is measured, and a detection circuit for producing an airflow rate signal by detecting resistance change of the element depending on the airflow rate, in which the resistance element comprises a heat wire coil, lead wires attached to the heat wire coil at both ends thereof, a ceramic layer covering the heat wire coil and junctions of the heat wire coil and the lead wires to form a cylindrical member in such a manner that the heat wire coil is contained therein coaxially and along an inner surface thereof and a glass layer for coating an outer surface of the cylindrical member.

Abstract: In an apparatus of the type in which the air-fuel ratio of an engine is detected by an air-fuel ratio sensor and the air-fuel ratio is feedback-controlled in accordance with the detection result to operate the engine at a desired air-fuel ratio, a change of the output characteristic of the air-fuel ratio sensor is always corrected for.