Valvetrain control systems for internal combustion engines...

Details Valvetrain control systems for internal combustion engines... Valvetrain control systems for internal combustion engines...

2008-04-04

2010-06-22

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Engine speed regulator

By changing valve lift

C123S090150

Reexamination Certificate

active

07740003

ABSTRACT:
A valve control system for an internal combustion engine includes a valve actuation system. The valve actuation system actuates at least one of an intake valve and an exhaust valve between N open lift modes via lift control valves. The control module enables transitioning of at least one of the intake valve and the exhaust valve between the N open lift modes. The control module defines M valve leading modes that indicate whether the intake valve transitions between the N open lift modes before, during the same time period, or after the exhaust valve. The control module selectively transitions the intake valve and the exhaust valve based on a current one of the M valve leading modes. N and M are integers greater than one.

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