Approach for adaptive control of cam profile switching for...

Details Approach for adaptive control of cam profile switching for... Approach for adaptive control of cam profile switching for...

2011-05-24

2011-05-24

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S295000, C123S345000, C701S102000

Reexamination Certificate

active

07946263

ABSTRACT:
A method is disclosed for controlling cylinder valve switching between a first valve condition and a second valve condition for transitioning between combustion modes of an engine. The method includes adjusting timing of a signal to switch between the valve conditions based on an oil degradation condition from an oil sensor, wherein the combustion modes include spark ignition and homogenous charge compression ignition.

REFERENCES:
patent: 6408806 (2002-06-01), Sugiyama et al.
patent: 6536390 (2003-03-01), Takahashi et al.
patent: 6622689 (2003-09-01), Hasegawa et al.
patent: 6688275 (2004-02-01), Shindou et al.
patent: 6755165 (2004-06-01), Kondou et al.
patent: 7274986 (2007-09-01), Petridis et al.

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