Four-cycle engine and system for detecting phase difference...

Details Four-cycle engine and system for detecting phase difference... Four-cycle engine and system for detecting phase difference...

2007-05-22

2007-05-22

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170

Reexamination Certificate

active

11274058

ABSTRACT:
A four-cycle engine typically including a crankshaft provided with a first gear, a camshaft provided with a second gear, an endless rotation transmission that is installed around the first and second gears and is configured to transmit rotation of the crankshaft to the camshaft, a crank phase detecting device configured to detect a rotational phase of the crankshaft that is obtained by dividing a phase corresponding to one rotation of the crankshaft by a number that is equal to or more than a half of teeth of the second gear of the camshaft, and a cam phase detecting device configured to detect at least one rotational phase of the camshaft.

REFERENCES:
patent: 5522352 (1996-06-01), Adachi et al.
patent: 6684830 (2004-02-01), Miyashita
patent: 6955145 (2005-10-01), McCabe et al.
patent: HEI 11-129963 (1999-05-01), None
patent: HEI 11-201011 (1999-07-01), None

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