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Method of control of magnetic sound of alternating current rotating
A method for greatly reducing magnetic sound of an alternating current rotating machine compared with the past comprising superimposing an n-1-th order frequency...
Light emitting diode control device
A control device of LEDs includes a lighting-up circuit and a lighting-out circuit, both of which generate pulse signals being pulse-width modulated by varying...
Structure of spark plug achieving high degree of air-tightness
A spark plug is provided which is constructed to ensure a higher degree of air-tightness. The spark plug includes a cylindrical metal housing within which an...
Semiconductor device having a pair of heat sinks and method for
manufacturing the same
A semiconductor device includes a heater element; a first heat sink disposed on one side of the heater element; a second heat sink disposed on the other side of...
Ceramic filter and catalyst-loaded ceramic filter
A catalyst-loaded ceramic filter made of a ceramic material capable of directly supporting a catalyst component thereon is capable of providing early activation...
Catalyst deterioration detecting apparatus
A heat generation amount qr/r per unit flow amount of combustible substances supplied to a catalyst is estimated based on upstream and downstream temperature...
Power transmission device and torque transmission member
A power transmission device for transmitting torque of a driving unit to a driven unit includes a first rotator, a second rotator, and a torque transmission...
High pressure fuel supply pump with an intake valve member and a discharge
valve member aligned along a plunger...
In a high pressure fuel supply pump, a housing is provided with a through-hole having a step. A plunger is slidably accommodated in the through-hole on an axial...
Heat control system
There are provided a water-refrigerant heat exchanger 30 for exchanging heat between refrigerant discharged from a compressor 21 and engine-cooling water...
Throttle body having internally connected double pipe structure
A resinous throttle body has a bore wall part having a double pipe structure constructed with a bore inner pipe and a bore outer pipe that are connected with...
Electric power steering system having a torque sensor
A torque sensor has a torsion bar coaxially in alignment with input and output shafts, a ring shaped magnet fixed to an axial end of the input shaft, a pair of...
Thermostat malfunction detecting system for engine cooling system
A malfunction of a thermostat in a coolant circulating path is detected from an engine side coolant temperature in consideration of the following behavior of the...
Method for roll forming, capable of preventing wrinkles and device
A die roll 3 comprises a core part 3a which is formed of an elastic material and faces a punch part 2a of a punch roll 2. The core part 3a presses a bottom...
Boost pressure estimation apparatus for internal combustion engine with
An opening is provided for an exhaust bypass pipe that bypasses an exhaust turbine of an exhaust turbine supercharger. According to the opening, an exhaust gas...
Rapid catalyst warm-up control device for internal combustion engine
A rapid catalyst warm-up control device for an internal combustion engine performs irregular injection dither control during the rapid catalyst warm-up control...
Integrated vehicle control system
An integrated vehicle control system includes various functionalized networks, such as power train group, vehicle motion group, and power source group, each...
Radio communication terminal unit and method of transmitting base station
A cellular phone unit, upon turning from a standby mode to a data communication mode, responds to a user's instruction of location positioning to turn from the...
Mobile station having waiting process with main power off
While main power in an automobile is off, a telematics station in the automobile intermittently runs to execute a process. The station has a first CPU in a...
Portable transmitter having tact switches with front film
An ID code is wirelessly sent to a device, such as a keyless-entry system or a keyless-starter system mounted on an automobile, from a portable transmitter....
Method of inspecting a semiconductor dynamic quantity sensor
A method of inspecting a semiconductor dynamic quantity includes varying a potential applied to a peripheral fixed portion while applying predetermined...
Driving circuit for brushless motor
A driving circuit for a brushless motor includes a current sensor for detecting alternating phase-current flowing in one of the phase coils, a switching driver...
Silicon carbide semiconductor device having enhanced carrier mobility
The principal surface of a p-type SiC substrate (1) is formed of a face intersecting (0001) Si-face at 10 to 16.degree.. An n.sup.+ source region (2) and an...
Night vision system and control method thereof
A second circuit separately extracts a synchronization signal and brightness signal from an image signal output from a camera for capturing an image of a...
Foreign material removing method for capacitance type dynamic quantity
In a capacitance type acceleration sensor comprising a movable portion which is equipped with movable electrodes, a poise portion and spring portions formed on a...
Gas sensor element
A gas sensor element which may be employed in measuring the concentration of gas such O.sub.2, NOx, or CO. The gas sensor element consists of an electrochemical...
Method and apparatus for manufacturing single crystal
A method for manufacturing a single crystal includes the steps of: flowing a raw material gas toward a seed crystal in a reactive chamber so that the single...
Non-contact IC card having enhanced reliability
To increase the reliability of a non-contact IC card for use in such applications as a door key, etc., two separate combinations of an IC chip and an antenna...
Electrically driven power steering system for vehicle
It is an object of the present invention to provide an electrical power steering system for a vehicle, in which an abnormal condition of a motor current...
There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having...
Structure connecting heat exchanger to shroud improving workability in
assembling or disassembling them
A fan shroud 4 is assembled to a cooling module in such a way that the fan shroud 4 covers brackets 3 that have been assembled to the cooling module, that is, a...
Pressure sensor device having temperature sensor
A pressure sensor device having a temperature sensor includes a pressure sensor, a temperature sensor, a sensor casing for accommodating the pressure sensor and...
An airflow meter has a bypass passage disposed in an air passage and a sensing portion disposed in the bypass passage to detect an airflow amount. The bypass...
Refrigeration cycle system
A refrigeration cycle system is disclosed. Upon generation of a start signal for a hot gas heater cycle, the cooling mode is first started thereby to start the...
Method of manufacturing commutator of rotary electric machine
A method of manufacturing a commutator of a rotary electric machine includes a step of forming a first unitary material having nail portions, a step of forming a...
Manufacturing method for a spark plug
In a bond step, one end of ground electrode is bonded to a metallic housing. In a provisional bending step performed after the bonding step, an intermediate...
Knock determining apparatus and method for internal combustion engine
A plurality of variables representing the characteristics of a knock is obtained from an output signal of a sensor. The variables include a peak value of the...
Device for detecting object in front of vehicle
A device including a radar and a camera for detecting an object located in front of an automobile is mounted on the automobile. The radar detects a distance from...
Thin film electromagnet and switching device comprising it
The present invention provided a thin-film electromagnet including a magnetic yoke and a thin-film coil, characterized in that the magnetic yoke includes a first...
Apparatus and method for controlling drive of plural actuators
An apparatus for controlling drive of a plurality of actuators is provided. The apparatus comprises a plurality of drive circuits respectively driving the...
Power transmission device
A power transmission device which interrupts torque transmission when the torque exceeds a predetermined torque. A torque limiter includes projections formed on...
Compressor provided with torque limiter
A compressor provided with a torque limiter constructed such that, in view of possible occurrence of accidental locking of the compressor, in the case where a...
Fins such as corrugated fins or plate fins are formed with meandering projections. A fluid such as air strikes bent parts of the meandering projections or...
System for diagnosing degradation of air-fuel sensor
An air-fuel ratio detected by an air-fuel ratio sensor is periodically varied by executing a PI control. During the PI control, a time period in which the...
Drive shaft coupling device
An oil supply means is provided to supply the center portion of a rotating part of an Oldham coupling with oil. The oil spreads from the center of rotation to...
A starter capable of preventing the slippage of a clutch at engine starting and of transmitting a higher torque. In the starter, a power transmission device is...
Semiconductor mechanical sensor
A semiconductor mechanical sensor having a new structure in which a S/N ratio is improved. In the central portion of a silicon substrate 1, a recess portion 2 is...
Gas-liquid separator and ejector refrigerant cycle using the same
In an ejector refrigerant cycle, even if refrigerant is super-heated in an evaporator, super-heated gas refrigerant does not directly flow into a gas-liquid...
Vehicle occupant detection apparatus providing status information
concerning occupant of vehicle seat
A vehicle occupant detection apparatus having a plurality of load sensors located to produce analog signals indicative of the presence/absence of a seat occupant...
Electromagnetic switch for starter
In an electromagnetic switch of a starter, a bobbin has two terminal holders on a flange. Each of the terminal holders defines a slot on its end surface and a...
Oil deterioration detection apparatus
An oil deterioration detection apparatus includes a sensor, an evaluation circuit, and a malfunction detecting circuit. The evaluation circuit has a...