Abstract: A magnetoelectronic transducer includes a housing; a circuit board (21) provided within the housing and having a processing circuit (51); an element holder (22) provided within the housing and extending perpendicular to and beyond the circuit board; a magnetoelectronic transducer element (24) provided on a front end of the element holder; a power circuit (50) provided on a basic section (22b) of the element holder; and a cable (28) connected to the power circuit.

Abstract: A data communication control system includes first and second control units each having a microcomputer, the second control unit carrying out a first interrupt processing which starts in accordance with a first timing signal having a first period, and a second interrupt processing which starts in accordance with a second timing signal having a second period, the second interrupt processing being for the second control unit to receive data transferred from the first control unit. The second timing signal is generated in the first control unit in such a manner that adjacent ones of the second timing signal have values of the second period different from each other. Therefore, even if the first interrupt processing and the second interrupt processing conincide with each other the coincidence is not continued whereby transfer of data can be reliably carried out.

Abstract: In a method for detecting the fuel injection performance of a fuel injection valve in which a nozzle needle biased by a spring member for establishing valve opening pressure is lifted off from the valve seat when pressurized fuel is supplied thereto, electric data corresponding to the wave form of the shock wave produced in the spring member when fuel is injected is detected at one end of the spring member, and time-course change in the pressure of injected fuel acting on the nozzle needle during the fuel injection operation is determined on the basis of the time-course change in magnitude of the shock wave returning from the nozzle needle side end in the spring member by reflection, whereby various fuel injection factors can be calculated from the determined pressure of injected fuel acting on the nozzle needle during the fuel injection operation.

Abstract: A vane compressor has a communication passageway extending between a discharge pressure chamber and vane back pressure chambers. A valve is formed of a ball received within a ball-receiving bore and displaceable for opening and closing the communication passageway depending upon discharge pressure, a coiled spring urging the ball toward a valve opening position, and a stopper for stopping the ball in the valve opening position. The ball-receiving bore has an axial length smaller than an inner diameter thereof such that part of the ball is projected from the ball-receiving bore into the discharge pressure chamber when the ball is in the valve opening position.

Abstract: A system for detecting the speed of an engine for a vehicle calculates the engine speed in accordance with a signal which is outputted from a main rotation sensor in accordance with the operation of the engine. In case the main rotation sensor is subjected to malfunction, the engine speed is calculated using a back-up signal. Namely, an auxiliary rotation sensor detects the rotation of a portion of a power transmission device. When the above portion of the power transmission device is connected to an output shaft of the engine, the signal from the auxiliary rotation sensor is used as the back-up signal. When the two are disconnected from each other, a signal, representing the condition of the operation of an actuator for controlling the amount of supply of fuel to the engine, is used as the back-up signal.

Abstract: A fuel injector includes a pressure chamber and/or a damper chamber to damp the movement of a plunger and a piston after fuel injection has ended. A fuel bypass communicates with the pressure chamber or damper chamber to prevent fuel pressure within the chamber from rising as a consequence of the damping action. The bypass prevents the pressure in the chamber from increasing to the point where the movement of the plunger would be reversed and pressurized fuel would once again be supplied to the nozzle causing secondary injection. The damper chamber and bypass thus serve to prevent bumping between the plunger and the surrounding cylinder and also to prevent secondary injection.

Abstract: A fuel injection pump of the type wherein the fuel injection timing is controlled by a timer and a solenoid-operated timing control valve. The timer has a high-pressure chamber and a low-pressure chamber which are defined at both sides, respectively, of a timer piston. The high-pressure chamber communicates with a high-pressure groove formed in the timing control valve through a passage. The low-pressure chamber communicates with the suction side of a feed pump through a low-pressure passage and also communicates with a low-pressure hole formed in the timing control valve through a passage. The timer piston is not provided with a passage mechanism which provides communication between a pump chamber and the high-pressure chamber. The pump chamber communicates directly with the high-pressure groove in the timing control valve through a fixed orifice disposed in the wall of the pump housing and a passage leading to the orifice.

Abstract: In an electronically controlled automatic transmission system including a gear transmission and a clutch, in which a target gear position is determined in accordance with map data for gear-shift control, it is discriminated whether or not the vehicle is in accelerating condition and necessary control for shifting up the transmission to the target gear position is carried out only when the vehicle is not in the accelerating state. Thus, when the driver presses hard on an accelerating member to accelerate the vehicle, a series operations for shifting up is not carried out, whereby the transmission is kept in its present gear position. The operation for shifting up can be carried out after the completion of the acceleration of the vehicle.

Abstract: A variable capacity vane compressor has an annular control element angularly displaceably received within an annular recess formed in one of side blocks defining a cylinder. The control element is angularly displaced in response to a difference in pressure between first and second pressure chambers formed in the one side block and communicating with a zone under lower pressure and a zone under higher pressure, respectively, and to the biasing force of a biasing member, thereby varying the opening angle of at least one second inlet port formed in the one side block and hence controlling the capacity of the compressor.

Abstract: A laminated evaporator includes a plurality of heat exchanging elements and a plurality of corrugated fins disposed alternately and built up into layers. Each of the heat exchanging elements includes at least at its one end a pair of tubular portions and a plurality of spacers. The tubular portions of one heat exchanging element are fitted with the tubular portions of an adjacent heat exchanging element, and spacers of two adjacent heat exchanging elements are joined together to maintain a constant spacing between the adjacent heat exchanging elements.

Abstract: An air-mix door control apparatus for automobile air-conditioners which is so constructed as to control the position of the air-mix door according to a deviation of the actual discharge air temperature from a target discharge air temperature calculated based on a set temperature, a vehicle compartment temperature, etc. A target position for the air-mix door is calculated according to a difference between the target discharge air temperature and the actual discharge air temperature at an interval which is shorter than the interval of calculation of the difference between the target air temperature and the actual discharge air temperature. With the control apparatus thus constructed, a stable and reliable control of operation of the air-mix can be achieved.

Abstract: An electromagnetic proportional pressure control valve includes a housing, and a spool slidably received in the housing. The spool has a pair of first and second pressure receiving portions which are equal to each other in effective pressure receiving area. A primary pressure in a primary port is applied to the first pressure receiving portion, and a secondary pressure in a secondary port is applied to the second pressure receiving portion. A form due to the primary pressure acts on the spool in a direction to increase the secondary pressure, and a force due to the secondary pressure acts on the spool in a direction to decrease the secondary pressure. A force of a spring and a force of an electromagnetic actuator also act on the spool in the opposite directions. A variation in the primary pressure directly appears in the secondary pressure.

Abstract: A scale pulse signal is produced whenever a revolution sensor detects a unit revolution angle formed an angle between cogs of poles. A time interval between the scale pulse signal is affected by an error in the formed angle. The time interval between the scale pulse signals can be corrected by using a correction coefficient detrmined by an actual value of the unit revolution angle detected by the revolution sensor and by a design value of the unit revolution angle, so that the time interval corresponds to the design value of the unit revolution angle.

Abstract: In a heat exchanger of the type having an end plate and a tank case joined together to form a tank and a plurality of tubes fitted in tube reception holes in the end plates for circulation therethrough of a heat exchange medium, with a gasket disposed between the tubes and the end plate, the gasket includes an inside portion covering one surface of the end plate facing the tank case, an outside portion covering the opposite surface facing away from the tank case, and a tubular connecting portion fitted in each of the tube reception holes and extending integrally between the inside portion and the outside portion. A method of making such a gasket is also disclosed, wherein a molten rubber compound is poured into a mold cavity in a mold with an end plate disposed within the mold cavity, thereby forming a gasket integrally molded on the end plate.

Abstract: A cooling device for a printer head includes an evaporation unit, a condenser and a refrigeration medium supply pump interconnected by conduits or tubes. The heat generated from the printer head is taken up in the form of the heat of vaporization of a refrigeration medium in the evaporation unit disposed around the printer head.

Abstract: In an air-conditioner for automobiles, cooled air having passed through an evaporator is immediately introduced through a cooled air bypass passage into the vehicle passenger compartment. The opening of a bypass door disposed in the bypass passage is adjusted based on a head part total signal corresponding to a thermal load in the vicinity of the head of an occupant which is obtained in view of the current discharge mode, or an auxiliary total signal corresponding to a thermal load in the vehicle passenger compartment which is obtained in view of the current discharge mode. With this arrangement, the occupant does never feel excess cold when the discharge mode is changed and hence a feeling of comfortableness toward the air-conditioning can be maintained.

Abstract: An automobile air-conditioner wherein a total signal corresponding to a thermal load in the passenger compartment of an automobile and a head part total signal corresponding to a thermal load in the vicinity of the head of an occupant of the passenger compartment, then the thus obtained two total signals are used to determine two corresponding states of operation of a component involved in air-conditioning operation, and operation of the air-conditioning component is controlled based on one of the two total signals which is capable of providing an enhanced coolness to the occupant. According to a preferred embodiment, all the components involved in the air-conditioning operation are controlled based on the head part total signal.

Abstract: In a vehicle-running control system, an engine combustion control device includes a malfunction detector for detecting a malfunction of the engine combustion control device, and an engine-combustion stopping unit operative in response to a malfunction detecting signal from the malfunction detector to stop combustion in the engine. A clutch control device has an urgent clutch switching unit which responds to the malfunction detecting signal to output a control signal for bringing a clutch to its engaged position, to an actuator of the clutch control device. A transmission control device has an urgent gear-position switching unit which responds to the malfunction detecting signal to output a control signal for bringing the gear position to one different from a neutral, to an actuator of the transmission control device.

Abstract: A two-stage opening fuel injection valve assembly, including a valve element having an initial position providing a zero flow rate of fuel through the valve assembly, a first critical position displaced a predetermined distance from the initial position and providing a first flow rate of fuel through the valve assembly, a second critical position further displaced a predetermined distance from the first critical position and providing a second flow rate of fuel through the valve assembly, first and second movable members engageable with the valve element independently of each other, a flange member constantly engaged by the valve element and engageable with each of the first and second movable members, a first spring urging the first movable member to engage the flange member when the valve element is held in the initial position, the first spring being operative to maintain the engagement between the first movable member and the flange member when the valve element is located between the initial position and

Abstract: An apparatus for controlling an automobile air-conditioner wherein the direction of solar radiation is determined based on a signal which is obtained by retarding the leading edge of a solar radiation signal and the position of an air-distributing door is controlled according to the thus obtained signal. A signal whose leading and trailing edges are progressively increasing and decreasing, respectively, is used for the calculation of a signal corresponding to the thermal load in the vehicle passenger compartment. The operation of various components of the air-conditioner including a blower is controlled by the result of calculation of the thermal load signal.