Nippondenso Co., Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Toshinobu Nishi

Kenji Yamada

Michio Morishita

Shinji Ishida

Hidenobu Kazita

Kenji Tanaka

Hidenori Sato

Akio Fukuba

Hideaki Ouchi

Kimiyoshi Isogai

An electrical connector device includes first and second cable winding members one of which is co-rotatable with a rotatable side and the other of which is fixed to a stationary side. The first and second cable winding members are arranged with their respective centers being spaced apart from each other. An flexible cable is fixed at its one end to the first cable winding member and at its other end to the second cable winding member. The flexible cable is wound around the first winding member to form a loose winding of a plurality of turns therearound so that relative rotation between the first and second cable winding members is allowed by means of radially expanding and contracting behavior of the cable winding around the first cable winding member.

Electrical connector device

A valve timing adjuster according to the present invention, comprises a pulley rotationally connected to one of an output shaft of engine and a cam shaft, a sleeve which is supported on the pulley, which is rotatable within a predetermined angle of rotation on the pulley and which is rotationally connected to the other one of the output shaft of engine and the cam shaft, an electromagnet mounted on one of the pulley and the sleeve, an armature mounted on the other one of the pulley and the sleeve so that magnetic flux including a magnetic flux component extending in the circumferential direction of the valve timing adjuster is generated, the armature is drawn by the magnetic flux toward the electromagnet and the sleeve is rotated within the predetermined angle of rotation on the pulley when the electromagnet is energized, and a control device which controls the operation of electromagnet so that the phase difference between the cam shaft and the output shaft is suitably adjusted during operation of a vehicle. Since the valve timing adjuster according to the present invention does not need means for converting an axial movement of the pulley to a circumferential or rotational movement thereof, does not have many friction regions and does not have the hydraulically-operated actuator and the hydraulic pipe lines, the durability and response speed are increased and the cost of modification of engine is not needed.

Valve timing adjuster

An engine exhaust gas purification system has a secondary air system for supplying secondary air into the engine exhaust system. The secondary air system has an air metering valve and a switching valve. The air metering valve is operative to meter the secondary air supply in accordance with signals emitted by an air-fuel ratio sensor disposed in the exhaust system to detect the oxygen content of engine exhaust gases. The switching valve is disposed in the secondary air supply line downstream of the air metering valve to interrupt the supply of the secondary air into the exhaust system during a high load engine operation for thereby preventing the exhaust system and, particularly, the catalyst device therein from being overheated. The force to close the switching valve is strong enough to keep the valve closed against the counter-flow of engine exhaust gases from engine exhaust system back into the secondary air system.

Exhaust gas purification system for an internal combustion engine

Growing community of inventors

Obu, Japan

Toshinobu Nishi