Protection method for an engine having a variable valve...

Details Protection method for an engine having a variable valve... Protection method for an engine having a variable valve...

2005-09-27

2005-09-27

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S090310

Reexamination Certificate

active

06948464

ABSTRACT:
The variable valve timing controller has an electric motor which rotates a phase converter. When the electric motor is locked for some reason, the over-load more than the predetermined value is applied to a motor shaft and the phase converter. In such a case, a pin connecting the motor shaft with the phase converter is sheared at a notch. Thus, a cam shaft and the phase converter were not locked, and breakage of a motor housing is prevented.

REFERENCES:
patent: 5265572 (1993-11-01), Kadomukai et al.
patent: 5680837 (1997-10-01), Pierik
patent: 6129061 (2000-10-01), Okuda et al.
patent: A-11-153008 (1999-06-01), None

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