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Tire air pressure estimating apparatus
In a tire air pressure estimating apparatus, wheel speeds of respective wheels are successively calculated when a vehicle is running. At least one of a tire...
Apparatus for detecting condition of road surface
An apparatus for detecting a condition of a road surface includes a vehicle wheel speed detecting device for outputting a vehicle wheel speed signal representing...
Multiplex communication system
In a multiplex communication system, a communication bus is connected to a communication bus disconnect control device. In the communication bus disconnect...
Surge preventing circuit for an insulated gate type transistor
A first Zener diode group, connected between drain and gate terminals of a power MOSFET, causes breakdown in response to a surge voltage applied to the drain...
GPS receiver and terminal device having search frequency band switching
A terminal device has a GPS receiver which receives GPS signals from a GPS satellite. The terminal device has an operation unit for instructing operation modes...
Electric power equipment for electric vehicle
An electric power equipment for a hybrid electric vehicle includes a main battery, an auxiliary battery, an inverter for supplying a prescribed lower-frequency...
Driving apparatus for piezo-actuator having abnormality detecting function
In a driving apparatus for piezo-stacks, a controller repeats switching operation for turning switching elements on/off to thereby attain a determined...
Insulated gate bipolar transistor
Insulated gate bipolar transistors which can restrain causing surge voltage due to an inductance component while an L-load is turned off and can improve a...
Gas concentration sensing apparatus
A gas concentration sensing apparatus includes a gas introducing portion for introducing a measurement gas. A first cell opposed to the gas introduction portion...
Vehicular air-conditioning apparatus
A differential mechanism is provided between first output shaft, to which the rotation of the drive motor is transmitted, and second output shaft, to which the...
Vehicle air conditioner with side face opening
In a vehicle air conditioner, an air conditioning case has a center face opening through which air is blown toward a center upper side of a passenger compartment...
Control system for hybrid vehicle
In an electronic control for a hybrid vehicle which is driven either by an engine or an electric motor, or both, possible failures in an ignition system and a...
Boiling cooling system that exchanges heat between higher-temperature fluid
and lower-temperature fluid
There is provided a boiling cooling system that exchanges heat between a higher-temperature fluid and a lower-temperature fluid through boiling heat transfer of...
Fuel injection control system of internal combustion engine
In a fuel injection control system for an internal combustion engine, a fuel atomization device is provided to atomize fuel injected at the time of engine...
Air conditioning system with compressor protection
An air conditioning system includes compressor protective means for protecting a compressor. The compressor protective means includes first and second protective...
GPS receiver with satellite frame synchronization process
A GPS receiver has a plurality of data demodulator circuits assigned to a plurality of GPS satellites, respectively, and a data memory which stores detailed...
Obstacle recognition system for vehicle
Height-wise positions of objects are detected on the basis of distances to the objects from a vehicle, angles of the objects in a width-wise direction of the...
Starter motor magnetic switch having auxiliary relay
A magnetic switch having a main motor switch for supplying power from a battery to a starter motor and an auxiliary relay for operating the motor switch is...
Rotational power converter for hybrid electric vehicle
A rotational power converter is composed of a stator fixed to a cylindrical housing and a first rotor and a second rotor rotatably supported in the housing. The...
Electric apparatus having a contact intermediary member and method for
manufacturing the same
A pressed-contact type semiconductor device in which a main electrode surface of a semiconductor element is contacted with an electrode plate by a...
Cylindrical coil and production process thereof
An electroless plating reaction catalyst is imparted to a substrate and then the catalyst is deactivated or removed at desired locations by irradiating with an...
In an electromagnetic valve, a seat member has a protruding portion having two parallel surfaces provided in the seat member. When the seat member is fixed to...
Heat exchanger constructed by plural heat conductive plates
A pair of heat conductive plates forming an evaporator core portion has a plurality of projection ribs. The projection ribs protrude toward outsides of the pair...
Pressure regulation valve
In a pressure regulation valve having a main spool and a sub-spool slidably housed in the main spool, the main spool is at a position where pilot pressure force...
Suction apparatus for an internal combustion engine
A hollow-cylindrical heat conduction portion is formed on a throttle body in such a way as to protrude outwardly therefrom in the radial direction. The throttle...
Valve timing adjusting device
A stopper piston is fitted into a fitting hole when a vane rotor is located at an approximately intermediate position between a most retard position and a most...
Braking force control device
A braking force control device is provided in which wheel speeds of respective wheels of a vehicle are detected. On the basis of detected wheel speeds, a road...
Wireless communication device capable of operating under different
A PDC/PHS phone has both PDC communication function and PHS communication function. The PDC/PHS phone receives a call from a PHS phone through a PHS ...
Electric circuit apparatus
Circuit elements of surface-mounting type such as MOSFETs etc. are mounted on a circuit board by soldering. The circuit board is retained slantingly by a base so...
Permanent magnet pole arrangement of motor
A pole arrangement of a motor includes a plurality of permanent-magnet main poles disposed annularly at equal intervals on the inner periphery of a yoke, a...
Mounting structure of semiconductor element
In a mounting structure of a flip chip IC, the flip chip IC is mounted on an alumina laminated substrate through conductive lands of the substrate and bumps of...
Receiver and refrigerant cycle system
In a receiver for separating gas refrigerant and liquid refrigerant and for storing liquid refrigerant for a refrigerant cycle, refrigerant form a condensing...
Automobile control system and method capable of revising control data
An automobile control system has a microcomputer that subjects each control data to be transmitted to a communication opponent to LSB conversion (accuracy...
Acoustic guide for audio transducers
The present disclosure describes a receptacle for acoustically guiding tones emitted from the side of the transducer. The receptacle is adapted to be mounted...
Spark plug for internal combustion engine having a straight pillar ground
In a spark plug having a straight pillar type ground electrode whose protruding length into the combustion chamber is relatively short, an intermediate member is...
Fulcrum blow off valve for use in a shock absorber
A shock absorber includes a rebound valve assembly which performs the flexing disc function normally required for allowing the passage of fluid from one side of...
Vehicle air conditioner
In a vehicle air conditioner, during a cooling mode of a refrigerant cycle, refrigerant discharged from a compressor passes through a condenser and flows into a...
Drain pipe for draining water or the like from casing
A drain pipe connected to a casing includes a water inlet opening and a couple of water outlet openings. The inlet opening is arranged at an upper end part of...
Automotive climate control system
An automotive climate control system is disclosed. As long as an ignition switch is off, a bypass (14) is closed (in this state, a ratio between warm air and...
Hot water supply system
A hot water supply system wherein a flow of a refrigerant on a high-pressure side of a supercritical heat pump cycle and a flow of hot water are oppositely...
Fuel supply amount controller for internal combustion engine
A pump control means controls a fuel pump so that fuel pressure supplied into the internal combustion engine becomes lower than a predetermined fuel pressure...
Fuel injection valve
In a fuel infection valve, a valve chamber of a three ways valve is selectively communicated to drain and high pressure conduits and also communicated, via a...
Fuel injection system
A common rail fuel injection system for controlling the opening area of the fuel metering valve inserted in the fuel supply passage for supplying the fuel to the...
Vehicle air-conditioning system
The present invention balances power consumption reduction and a cooling in a vehicle air-conditioning system having a compressor selectively driven by a vehicle...
A master cylinder which includes a primary piston and a thrust piston disposed within a housing, and defines an intensifying chamber at a location rearward of...
Rotation detector having two pairs of symmetrically positioned
magnetoresistive element circuits
Rotation of a rotating object such as a toothed rotor is detected based on put potentials of a bridge circuit having four magnetoresistive elements. The bridge...
Power MOS transistor
A new and improved power MOS transistor having a protective diode with an increased breakdown voltage difference and less sheet resistivity is disclosed. In an...
Fuel injection pump
In a fuel injection pump, flat sections are provided around a connecting segment located between an inner wall surface of a pump housing defining a fuel...
Brake control device
A brake control device has a master cylinder, wheel cylinder, and a solenoid valve disposed in a conduit between the master cylinder and the wheel cylinder. When...
Electromagnetic valve and hydraulic circuit
An electromagnetic valve has a plunger as an armature of an electromagnetic actuator and a ball as a movable valve member. The plunger and the ball are separated...