Rocker arm

Details Rocker arm Rocker arm

1995-04-27

1996-12-10

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9051, 123 9044, 74519, 74559, F01L 118

Patent

active

055821421

ABSTRACT:
A rocker arm for a valve train of an internal combustion engine has a cam travel surface for a cam support, a recess for a hydraulic valve-play adjusting element and a rocker arm shaft located therebetween. The rocker arm consists of higher-strength chilled cast iron in a first area around the cam travel area, that has a greater hardness than the second and third areas around the rocker arm shaft, which are composed of nodular cast iron, and around the cylindrical recess that is cast into the rocker arm.

REFERENCES:
patent: 4153017 (1979-05-01), Behnke
patent: 4624224 (1986-11-01), Kodama et al.
patent: 4628874 (1986-12-01), Barlow
patent: 4870931 (1989-10-01), Nakamura et al.
patent: 5163391 (1992-11-01), Green et al.
patent: 5195473 (1993-03-01), Kano et al.
patent: 5251585 (1993-10-01), Graber
Patent Abstract of Japan; JP 54-130427 dated Sep. 10, 1979 to Sugimoto Shigetoshi et al.
"Werkstoffkunde kurz und einpragsam", Dr-Ing. Erich Baumgartl, VEB Fachbuchverlag Leipzig 1976, pp. 5, 68-71 and 144-147.

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