Three-dimensional camshaft and its manufacturing method

Details Three-dimensional camshaft and its manufacturing method Three-dimensional camshaft and its manufacturing method

1998-07-17

1999-12-14

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 906, 74567, 74568R, F01L 134, F01L 1300

Patent

active

060003685

ABSTRACT:
A camshaft assembly has a shaft and a cam that are formed independently and then assembled together. The cam includes an inclined section and a parallel section. The radius of the inclined section varies in the axial direction in at least one angular section of the cam, and the cross section of the parallel section is constant in the axial direction. The parallel section is adjacent to the inclined section and not contacted by the cam follower.

REFERENCES:
patent: 2069587 (1937-02-01), Mattern
patent: 3023870 (1962-03-01), Udelman
patent: 4401069 (1983-08-01), Foley
patent: 4597365 (1986-07-01), Madaffer
patent: 4977793 (1990-12-01), Husted
patent: 5080055 (1992-01-01), Komatsu et al.
patent: 5085099 (1992-02-01), Hughes
patent: 5307708 (1994-05-01), Matt
patent: 5419217 (1995-05-01), Umezawa et al.
Patent Abstracts of Japan, vol. 004, No. 123 (M-029), Aug. 30, 1980 & JP 55 081212 A (Nissan Motor Co., LTD.).

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