Assignee: Hitachi Car Engineering Co., Ltd.

Location: Hitachinaka, JP
No. of patents: 235

Number	Title	Issue Date
7395707	Thermal type flow rate measuring apparatus A flow rate sensor has a problem that a resistance value of a heat generating resistor itself varies and sensor characteristics are changed during use of the sensor for a long term. Also, the temperature of the heat generating resistor must be adjusted on a circuit ...	07/08/2008
7395888	Vehicle drive device A vehicle drive device comprises an actuator located between an electric motor and axles for driving the vehicle, a built-in power source for supplying electric power to the actuator, and a control means for controlling the drive of the actuator. The built-in power ...	07/08/2008
7387043	Method of changing gears of an automobile, automotive gear shifter, controller for automotive gear shifter, and actuator controller for automotive gear shifter To enable compactness by lowering the connecting force of dog clutch so as to decrease the energy consumption and reduce the size of a system. A method of changing gears of automobile which moves the dog clutch in the axial direction at the time of gear change, whil...	06/17/2008
7383815	Air flow measuring device formed integrally with electronically controlled throttle body An air flow sensor for an internal combustion engine is disclosed. An air flow rate measurement meter, a pressure gauge, electronically controlled throttle body, and the microcomputer, etc. are integrated as one body, and the correction of the air flow rate, the con...	06/10/2008
7378773	Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is ...	05/27/2008
7376040	Backup circuit for holding information in a storage circuit when power cut-off occurs A backup circuit that can be fabricated by the standard CMOS process and has a small circuit scale. The backup circuit (10) is disposed between a digital circuit (20) including a storage circuit and a power supply terminal (TIN, TGND	05/20/2008
7375510	Rotational position sensor and electronically controlled throttle device and internal combustion engine A rotational position sensor having a compact and simple structure, in which a magnetic surface can be formed to have a more accurate shape, and an electronically controlled throttle device for an internal combustion engine, which employs the rotational position sen...	05/20/2008
7367315	Throttle valve control apparatus of internal combustion engine and automobile using the same The invention provides a throttle valve control apparatus provided with a throttle sensor which is in trouble at a low possibility and has a long service life, whereby an accurate output of a throttle opening degree can be obtained. The throttle valve control appara...	05/06/2008
7347116	Automobile, and control unit and driving power train system for the same A gear box for selecting a gear train arranged between input and output shafts and shifting gears is used as a transmission, and furthermore, a motor 2 is connected to a differential device 111 of the input and output shafts, and a plurality of mesh me...	03/25/2008
7331897	Active shift transmission, transmission control unit and automobile The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft is...	02/19/2008
7315104	Iron core and method of manufacturing the same and apparatus for manufacturing the same An apparatus for manufacturing an iron core comprising: a plate thickness measurement unit for measuring a thickness of the strip as an intermediate product of the iron core; an inlet guide for positioning the strip in a widthwise direction thereof; a mil roll unit ...	01/01/2008
7303406	Device for controlling a vehicle A device for controlling a vehicle 8 has a housing, a rectangular printed circuit board inside of the housing and a control circuit thereon. Plugs are provided along one side of the rectangular printed circuit board to transfer signals between the inside and ...	12/04/2007
7290528	Exhaust gas recirculation device for internal combustion engine An object of the present invention is to provide an exhaust gas recirculation device with an improved response speed and accuracy of exhaust gas recirculation flow control in an internal combustion engine. A recirculation gas control valve controls a recirculation f...	11/06/2007
7284424	Thermal air flow rate measuring apparatus and its flowmeter and internal combustion engine and thermal air flow rate measuring method using it A thermal air flow rate measuring apparatus of great precision wherein sensitivity is enhanced by sensors having different output characteristics and an operating device employing a digitized signal. The sensitivity and temperature can be corrected easily depending ...	10/23/2007
7284535	Motor driving type throttle apparatus An throttle valve is controlled by using an electric actuator. A cover for covering one end side of the throttle valve shaft is attached to a side wall of a throttle body. A throttle position sensor unit and an electronic control module for controlling the throttle ...	10/23/2007
7281423	Characteristics adjusting apparatus of physical quantity sensing device and a thermal type air flow measuring instrument, and associated adjusting method The output characteristics of the sensing device or the control quantity of the sensing element can be adjusted by extracting an adjusting terminal in addition to a power source terminal, a ground terminal, an output terminal and the like outside a housing containin...	10/16/2007
7282810	Power supplying apparatus for vehicle and intensive wiring apparatus An electric power supply system for a vehicle has an electric power line wired in a loop configuration. From the electric power line power is supplied to a load, and to another system which supplies control system power supply. One shutdown circuit is provided in a ...	10/16/2007
7279855	Electric drive device for vehicle and hybrid engine/motor-type four wheel drive device A vehicle electric drive system and a hybrid engine-motor type vehicle drive system realizing simplification and miniaturization of electric parts and, moreover, reduction in cost while maintaining performances can be provided. A part 1 of wheels is driven by...	10/09/2007
7270000	Fluid flow sensor and fluid flow measurement device A Thermal type fluid flow sensor comprises a heating resistor formed on a thin film of a substrate, and plural thermal sensitive resistors configuring a bridge circuit. The thermal sensitive resistors are disposed on the thin film of the substrate so as to be locate...	09/18/2007
7267100	Controller of internal combustion engine An internal combustion engine controller, is used with a fuel-based torque-on-demand control type, multi-cylinder, direct-injection internal combustion engine, to provide an air flow rate control that excels in response and convergence. The internal combustion engin...	09/11/2007
7260992	Pressure sensor, flowmeter electronic component, and method for manufacturing the same An outer case connector portion, a gauge housing case, and the like for use with a pressure sensor, for example, are generally made of a thermoplastic or thermosetting resin. However, the resin physically causes curing shrinkage. Especially when a metal is insert mo...	08/28/2007
7260657	Serial data transferring apparatus A master unit sends a start signal to a slave unit. When receiving the start signal from the master unit, the slave unit sends, to the master unit, a synchronization field that is a data train (pulse signal) indicative of a transfer clock with which the slave unit i...	08/21/2007
7255837	Electronic device and thermal type flow meter on vehicle An airtight configuration for keeping down the permeation of corrosive gas from silicone adhesive, and for preventing corrosive gas from entering the case. An electronic device mounted on vehicle. The electronic device has at least one of a portion connecting...	08/14/2007
7247004	Electronically controlled actuator An electronically controlled actuator for controlling a turbocharger has a motor, a speed change mechanism and a position sensor contained in a case consisting of a body and a cover. The driving force of the motor is transmitted through the speed change mechanism to...	07/24/2007
7231903	Throttle apparatus for an internal combustion engine A returning spring of the electronic control throttle and a default spring for securing an initial opening degree (default opening degree) of the throttle valve have diameters different from each other, and both of the springs are held around a shaft of the throttle...	06/19/2007
7228614	Method of manufacturing a gas flow meter A gas flowmeter capable of reducing a secular change comprises a silicon semiconductor substrate formed with a cavity and a heat element formed above the cavity of the semiconductor substrate by way of an insulating film. The heat element is a silicon (Si) semicondu...	06/12/2007
7225669	Heating resistance flow rate measuring apparatus A heating resistance flow rate measuring apparatus which can use a power source of an ECU in an automobile without requiring an expensive protective circuit and regulator. Heating of temperature detecting resistors themselves causes temperature changes on the windwa...	06/05/2007
7226379	Active shift transmission, transmission control unit and automobile The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft is...	06/05/2007
7215021	Electronic device The conductor wire surface for constituting a circuit formed by print or junction on a substrate formed from a composite member of ceramics, resin, and an inorganic member and from a resin member is coated with glass, resin, solder, or silver paste, thus the corrosi...	05/08/2007
7215115	Module to control a rotating output shaft and module to change a driving condition of vehicle A sensor and a control circuit are provided externally of a gear cover. This enhances reliability of a shift controller operated by an electric actuator and a motor driven control module similar thereto, and constitute them compact. Further, this provides a rotating...	05/08/2007
7215055	Vehicle A rotating electric machine comprises a stator having stator salient poles, three-phase windings wound around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said sta...	05/08/2007
7201046	Flowmeter with resistor heater An air temperature detector 12 is disposed close to an auxiliary passage sidewall 15, which has an auxiliary passage wall hole 9 formed near the air temperature detector 12. A heat-sensitive resistor 13 is also disposed close to th...	04/10/2007
7196447	Rotating electric machine A rotating electric machine comprises a stator having stator salient poles, three-phases windings wound around the stator salient poles, a rotor rotatable held inside the stator, and permanent magnets inserted into the rotor and positioned opposite to the stator sal...	03/27/2007
7194926	Method of changing gears of automobile, automotive gear shifter, controller for automotive gear shifter, and actuator controller for automotive gear shifter To enable compactness by lowering the connecting force of dog clutch so as to decrease the energy consumption and reduce the size of a system. A method of changing gears of automobile which moves the dog clutch in the axial direction at the time of gear change, whil...	03/27/2007
7193317	Semiconductor module and power conversion device One method of achieving the above subjects is by connecting a block member 14, which is connected to the side opposite to that of a semiconductor chip 11 having insulating substrates 12 and 13 connected to the top and bottom of the semico...	03/20/2007
7185629	Motor driving type throttle apparatus An throttle valve is controlled by using an electric actuator. A cover for covering one end side of the throttle valve shaft is attached to a side wall of a throttle body. a throttle position sensor unit and an electronic control module for controlling the throttle ...	03/06/2007
7165534	Fuel feed system A fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability is provided. A fuel feed system for an internal combustion engine including a fuel tank and a low-pressure pump for feeding the fuel in the fuel tank to ...	01/23/2007
7152583	High-pressure fuel pump A simple structured high-pressure fuel pump. A fuel pump comprises a reciprocably-supported cylinder, a pressurizing chamber using part of the outer surface of the cylinder as the wall surface which move to change the internal volume, a fuel intake passage fo...	12/26/2006
7152581	Throttle valve control apparatus of internal combustion engine and automobile using the same The invention provides a throttle valve control apparatus provided with a throttle sensor which is in trouble at a low possibility and has a long service life, whereby an accurate output of a throttle opening degree can be obtained. The throttle valve control appara...	12/26/2006
7121259	Throttle device for internal-combustion engine A throttle device for an internal-combustion engine, in which, on one surface of a throttle body side wall is formed a mounting space for mounting a reduction gear mechanism which transmits the power of a motor to a throttle valve shaft; and a throttle sensor for de...	10/17/2006

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Assignee: Hitachi Car Engineering Co., Ltd.