Valve control apparatus and electric driving apparatus

a technology of electric driving apparatus and valve control, which is applied in the direction of mechanical equipment, operating means/releasing devices of valves, machines/engines, etc., can solve the problems of increasing manufacturing costs, unable to detect malfunctions in driving force-transmitting paths,
US20120001105A1Inactive Publication Date: 2012-01-05DENSO CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
DENSO CORP
Publication Date
2012-01-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

A valve control apparatus is provided with a valve, a shaft supporting the valve, an end-gear of an actuator driving the valve. The shaft is press-inserted into the end-gear. A stopper disposed on the shaft regulates a valve operation range. The end-gear can engage with the middle gear of the reduction-gears mechanism even in out of the gear-operation-angle range. When a rotation angle sensor detects a rotation angle of the end-gear in out of the gear-operation-angle range, it is determined that a malfunction occurs in a rotation-force-transmitting path.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on Japanese Patent Applications No. 2010-149284 filed on Jun. 30, 2010, and No. 2010-160184 filed on Jul. 15, 2010, the disclosures of which are incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present invention relates to a valve control apparatus including a valve and an actuator. The valve opens / closes a fluid-passage and the actuator drives the valve. Especially, the valve control apparatus is used for opening / closing an intake passage communicating with a combustion chamber of an internal combustion engine. Further, the present invention relates to an electric driving apparatus which drives a driven member by use of a driving force of an electric motor.BACKGROUND OF THE INVENTION

[0003] Conventionally, a valve control apparatus has a valve which opens / closes an intake passage communicating with a combustion chamber of an internal combustion engine, a shaft supporting the valve, and an actuator d...

Claims

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