Valve Timing Control Apparatus for Internal Combustion Engine, and Method of Producing Same

a timing control and internal combustion engine technology, applied in the direction of valve details, valve arrangements, valve drives, etc., can solve problems such as the deformation of the timing bel

a timing control and internal combustion engine technology, applied in the direction of valve details, valve arrangements, valve drives, etc., can solve problems such as the deformation of the timing bel

US20110061616A1Inactive Publication Date: 2011-03-17HITACHI AUTOMOTIVE SYST LTD
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  • Valve Timing Control Apparatus for Internal Combustion Engine, and Method of Producing Same
  • Valve Timing Control Apparatus for Internal Combustion Engine, and Method of Producing Same
  • Valve Timing Control Apparatus for Internal Combustion Engine, and Method of Producing Same

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Embodiment Construction

[0030]>FIG. 1 is a front view of a valve timing control apparatus according to an embodiment of the present invention in which a pair of intake valve timing control apparatuses 1a and a pair of exhaust valve timing control apparatuses 1b are mounted to an internal combustion engine, as viewed in an axial direction of the internal combustion engine. The axial direction is an axial direction of a crankshaft of the internal combustion engine, which is identical to an axial direction of intake camshafts or exhaust camshafts. The intake valve timing control apparatus 1a and exhaust valve timing control apparatus 1b are individually or collectively referred to as valve timing control apparatus or system 1. The internal combustion engine is arranged in a vehicle engine room so that the axial directions of the crankshafts and camshafts are perpendicular to a vehicle longitudinal direction. In other words, FIG. 1 is a view of valve timing control apparatus 1 in a vehicle lateral direction. I...

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Abstract

A valve timing control apparatus for an internal combustion engine, includes a housing body, a sealing plate, a vane rotor, and a sealing ring. The housing body includes an opening at an axial end which is closed by the sealing plate. The sealing ring is disposed between the housing body and the sealing plate. The housing body is formed of an aluminum-based metal material and anodized, wherein the housing body includes a base layer and an anodic oxide coating film layer. The sealing ring abuts on the base layer of the housing body at the axial end.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to valve timing control apparatuses for internal combustion engines, and methods of producing same.[0002]Japanese Patent Application Publication No. 5-113112 discloses a valve timing control apparatus for an internal combustion engine, which includes a housing connected to a crankshaft, and a phase change mechanism mounted in the housing, and connected to a camshaft. The housing is formed with a pulley at its outside periphery to which torque is transmitted from the crankshaft through a timing belt that is wound around the pulley, so that the housing rotates in synchronization with the crankshaft. The phase change mechanism operates in response to supply and drainage of working fluid, for changing valve timing, i.e. rotational phase of the camshaft with respect to the crankshaft.SUMMARY OF THE INVENTION[0003]The valve timing control apparatus described above is subject to a problem that the timing belt may be degraded by...

Claims

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Application Information

Patent Timeline
17 Mar 2011
Publication
US20110061616A1
IPC
F01L1/34
CPC
F01L1/02; F01L1/024; F01L2103/00; F01L2001/34479; F01L1/3442; F01L2303/00
Inventors
WATANABE, ATSUSHI