Valve timing retarding system

Details Valve timing retarding system Valve timing retarding system

1990-09-21

1993-02-09

Kamen, Noah P.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123 9015, 123 9027, F01L 102

Patent

active

051845814

ABSTRACT:
Several embodiments of variable camshaft timing means for twin overhead cam engines. There is provided a first timing altering means between the engine output shaft and one of the camshafts and a second timing altering means that is operative between the one camshaft and the other camshaft. Both timing altering means are operated by the same hydraulic pressure in several embodiments and a locking device is incorporated so as to avoid self-induced timing adjustment due to the change in driving loads.

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