Valve-timing control apparatus for internal combustion engine

Patent metadata

Field	Value
Publication number	US-8973545-B2
Application number	US-201314107477-A
Country	US
Kind code	B2
Filing date	Dec 16, 2013
Priority date	Dec 18, 2012
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

A valve-timing control apparatus includes a drive rotating member; a driven rotating member fixed to a cam shaft; an electric motor configured to rotate the driven rotating member relative to the drive rotating member; a motor housing connected integrally with the drive rotating member; a cover member located to face a front portion of the housing; a tubular motor output shaft provided inside the housing to be rotatable relative to the housing; and a plug member fixed to an inner circumferential surface of a tip portion of the tubular motor output shaft and configured to inhibit lubricating oil supplied into the tubular motor output shaft from leaking to an external. The plug member includes a core member formed in a bottomed tubular shape and formed with a through-hole in its bottom portion, and an elastic body coating at least the through-hole and an outer circumferential surface of the core member.

First claim

What is claimed is:

1. A valve-timing control apparatus for an internal combustion engine, comprising:
a drive rotating member configured to receive a rotational force from a crankshaft;
a driven rotating member fixed to a cam shaft and configured to rotate relative to the drive rotating member;
an electric motor configured to rotate the driven rotating member relative to the drive rotating member by means of rotary drive of the electric motor;
a housing connected integrally…

Assignees

• Hitachi Automotive Systems Ltd

Inventors

• Kawada Shinichi
• Tadokoro Ryo
• Yamanaka Atsushi

Classifications

• F01L1/34 Primary

  Mechanical Engineering · mapped topic

• F01L2820/032

  Mechanical Engineering · mapped topic

• Y10T29/49405

  Cross-Sectional Technologies · mapped topic