Unisia Jecs Corporation

Hitachi, Ltd.

Hitachi Unisia Automotive, Ltd.

Masato Kumagai

Hisaaki Sato

Keiichi Kai

Munehiro Kudo

Ikuo Mogi

Hiroshi Okada

Tomoaki Araki

Eiichi Sato

Hiroshi Yamada

Hironori Ohhashi

Toru Mashimo

Toshio Komaki

Takuma Ushijima

Satoru Watanabe

Nobuaki Kobayashi

Hajime Hosoya

Kazuyoshi Mori

Satoshi Hashimoto

A storage system includes a primary volume and a first controller that stores data in a primary volume and stores content at a prescribed point in time in the form of differential data. The first controller generates generational management information corresponding to the differential data of the prescribed point in time and manages the generational management information. The storage system also includes a secondary volume configured to store backup data and a second controller configured to receive data sent from the first controller, store data to the secondary volume, store the generational management information, receive a request for a certain generation of the generations and provide data of the primary volume corresponding to the requested generation based on the request. The first controller determines to send differential data and the generational management information to the second controller when an amount of differential data reaches a prescribed amount.

Storage system and back-up method for storage system

An apparatus for controlling a throttle valve electronically in an internal combustion engine. The actuatoris supported on a bodyA by fixing a base plateto a flangeB of the bodyA with a boltand an elastic memberis fixed at an outer surface of a cylindrical projectionC which is positioned on one endB of the body of the actuatorThe inner surface of a caseC of the bodyA covers cylindrical projectionC. One endB of the body of the actuatoropposite the actuator output end, is thus supported by the bodyA via elastic memberTherefore, it is not necessary to provide a heavy wall thickness of the flange by which the actuatoris supported or of the body of the actuator, and increase the strength of the internal structure of the actuator, and increase weight, size, and cost of the actuator.

Apparatus for controlling a throttle valve electronically in an internal combustion engine

A fuel injector includes a tube member and a valve element to slide axially in the tube member. The valve element includes a center portion and a plurality of plate portions projecting radially from the center portion, and each including side surfaces extending axially; and a guide section including an outer portion defining a valve seat, and an inner portion which is located on a radial inner side of the outer portion, and which is formed with at least one injection hole. The guide section is arranged to divert the flow of the fuel conveyed along the plate portions, to a radial inward direction toward the injection hole.

Fuel injector

The present invention provides a storage system whereby it is also possible to back up the generational management information of a copy source disk array device. The disk array device of the primary site manages back-up data of a main volume, in a plurality of generations, by means of differential snapshots. The differential data of the main volume and the main pool is transferred from the primary site to the secondary site, at a prescribed timing. The secondary site holds the secondary volume, which is a copy of the main volume, and a secondary pool which is a copy of the main pool. The primary site also transfers the generational management information to the secondary site. The generational management information may also comprise a differential bitmap table and a withdrawal destination address management table. The secondary site holds a copy of the generational management information. Thereby, it is possible to back up the whole of the data, including the generational management information, and hence protection against failure is improved.

A canister, a cut valve which closes a fresh air intake of the canister, and a pressure sensor which detects a pressure in a fuel vapor path shut off by closing a purge control valve and the cut valve are disposed at the inside of a fuel tank, and a fuel supply control unit which controls the cut valve and the purge control valve, and which carries out a leak diagnosis on the basis of a detected result of the pressure sensor is disposed at the inside of the fuel tank.

Fuel supply apparatus and control method for internal combustion engine

A system for detecting the level of liquid in a tank includes a sensor part provided to the tank and for sensing a position of the liquid level in accordance with displacement of a float, and a sensor casing arranged in the tank to be isolated from liquid and for accommodating the sensor part.

System for detecting level of liquid in tank

A fuel gauge includes an arm moving with the level of fuel in a fuel tank, a detection body for movably supporting the arm and including a rotor moving together with the arm and a stator for movably supporting the rotor, and a magnetic-flux detecting element arranged in the stator and for detecting the displacement amount of the arm.

Fuel gauge

A fuel supply unit, includes: The inner section of the motor housing bulkhead is substantially sealably separated from the outer section of the motor housing bulkhead, in such a manner as to bring about an oil tightness.

Fuel supply unit

In a fuel-injection system with a pressure regulator disposed in the middle of a fuel supply line and located upstream of a fuel injector for regulating the pressure of fuel flowing through the fuel supply line and for returning surplus fuel via the pressure regulator into a fuel tank, a reflux pipe arrangement is located downstream of the fuel injector and connected at one end to the downstream end of the fuel supply line and connected at the other end to the fuel tank. A reflux control device is disposed in the middle of the reflux pipe arrangement for controlling a flow rate of the fuel flowing through the reflux pipe arrangement. The reflux control device is comprised of a reflux control valve or a fluid-flow restriction orifice member.

Fuel-injection system

A fuel supply system for a vehicle, the fuel supply system being comprised of a fuel tank, a fuel pump installed in the fuel tank, a fuel level detection unit which is comprised of a float and a sensor member which detects a vertical displacement of the float, and a pressing member which presses with elasticity the sensor member against the inside bottom of the fuel tank.

Fuel supply system for vehicle

In a throttle valve device for driving a throttle valve to open/close by an electric motor, wherein a circuit case for accommodating a motor drive circuit is integrally formed to a throttle body, said throttle body is further equipped with a cooling water passage for cooling said motor drive circuit with the engine cooling water.

Throttle valve device of engine

A rotary valve actuator arrangement including a rotary valve and an electromagnetic actuator actuating the rotary valve. The rotary valve includes a valve shaft rotatable about an axis and a valve body disposed on the valve shaft for unitary rotation therewith. The electromagnetic actuator includes two stator cores, two coils wound on the stator cores, and a rotor rotatable about the axis and including two projecting portions opposed to the stator cores. Mutually opposed surfaces of the stator cores and the projecting portions define a continuously variable area forming a magnetic path when the coil is energized.

Rotary valve actuator arrangement

An apparatus for controlling a throttle valve electronically in an internal combustion engine. A rotational rod is coupled to a gear lever and the mechanism for putting the throttle back, which is protected by a cover. A throttle sensor is coupled to the rotational rod, which is also covered by a cover. Since the mechanism for putting the throttle back is covered, it is easy to prevent the deterioration of the mechanical parts, the entry of the foreign matter, corrosion, and to improve reliability. Also, because the throttle sensor is installed to the end of the apparatus for controlling the throttle valve, it is easy to adjust/readjust or install/exchange the throttle sensor, improve miniaturization, reduce weight, and lower cost.

Apparatus for controlling a throttle valve electronically in an internal

A throttle valve device for an internal combustion engine of an automotive vehicle. The throttle valve device comprises a throttle body having a part of an intake air passageway. A throttle valve is fixedly mounted on a valve shaft and rotatably disposed in the part of the intake air passageway. A driving device is disposed to the throttle body to drive the throttle valve through the valve shaft. A reduction gear mechanism through which the driving device and the valve shaft are mechanically connected is provided to transmit a driving force of the driving device to the valve shaft in a manner to accomplish a speed-reduction for a rotational movement of the driving device to be transmitted to the valve shaft. A cam follower is rotatably disposed to the throttle body. A single biasing device is provided to always bias the cam follower onto the cam surface of the cam lever. Additionally, a cam lever is incorporated with a gear of the reduction gear mechanism to rotate together with the gear as a one-piece member. The cam lever has an opening whose periphery serves as a cam surface on which the cam follower is in press contact under a biasing force of the biasing device. The cam surface is configured to allow the throttle valve to rotate from a fully closed position to a fully opened position. The cam surface has a bent section which causes the throttle valve to take a partly opened position when the driving force of the driving device is released. The partly opened position is between the fully closed and fully opened positions.

Throttle valve device

For controlling a throttle valve of an internal combustion engine, there is provided a control valve control device. The device includes a throttle body; a pivot shaft rotatably held by the throttle body and extending across a throttle chamber of the throttle body, the throttle valve being secured to the throttle shaft to pivot therewith; an electric actuator mounted to the throttle body to produce a power to drive the pivot shaft; and a reduction gear mechanism arranged between the electric actuator and the pivot shaft to reduce a speed of an actuation motion applied to the pivot shaft from the actuator. The throttle valve control device further includes a cam lever constituting a part of the reduction gear mechanism, the cam lever being secured to the pivot shaft to pivot therewith and having a cam surface; a cam follower structure pivotally connected to the throttle body and constantly contacting the cam surface to be pivoted; a spring for biasing the cam follower structure in a direction to press a part of the cam follower structure against the cam surface; and a close position adjuster mounted on the cam lever to adjust the close position of the throttle valve. When the cam lever is pivoted in a direction to close the throttle valve, the close position adjuster is brought into abutment with the part of the cam follower structure thereby to stop further pivoting of the cam lever.

Growing community of inventors

Saitama, Japan

Masato Kumagai