Variable event valvetrain operation during an engine start

Details Variable event valvetrain operation during an engine start Variable event valvetrain operation during an engine start

2008-05-20

2008-05-20

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S090150, C123S432000, C123S06900V

Reexamination Certificate

active

07373923

ABSTRACT:
A method for improving engine starting for an engine having a variable event valvetrain is described. According to one aspect of the description, valve timing is adjusted during a start to reduce engine emissions and fuel consumption.

REFERENCES:
patent: 5483937 (1996-01-01), Firey
patent: 6513493 (2003-02-01), Robichaux et al.
patent: 2006/0037570 (2006-02-01), Hitomi et al.
patent: 2007/0119421 (2007-05-01), Lewis et al.

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