Mechanical parts of valve driving mechanism for internal combust

Details Mechanical parts of valve driving mechanism for internal combust Mechanical parts of valve driving mechanism for internal combust

1988-09-22

1989-08-15

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 906, F01L 104

Patent

active

048564699

ABSTRACT:
A valve driving mechanism of which a rocker arm is provided at one end portion with a roller brought into a rotative contact with a cam surface of a cam for driving engine valves. The cam consists of 2.0-4.0 wt % of C, 1.5-3.5 wt % of Si, 0.1-1.0 wt % of Mn, 0.005-0.08 wt % of Mg, less than 0.15 wt % of P, less than 0.15 wt % of S, 0.3-1.0 wt % of Cu, 0.03-0.09 wt % of Mo with the balance of Fe, with a matrix of the cam being a granular graphite cast iron having a mixed structure of 30-50 vol % of residual austenite structure and a bainite structure.

REFERENCES:
patent: 4153017 (1979-05-01), Behnke
patent: 4360383 (1982-11-01), Takahashi et al.
patent: 4491477 (1985-01-01), Suganuma et al.
patent: 4518563 (1985-05-01), Suganuma et al.
patent: 4583502 (1986-04-01), Takahashi et al.
patent: 4790875 (1988-12-01), Urano et al.

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