Engine control with operating mode detection

Details Engine control with operating mode detection Engine control with operating mode detection

2005-03-01

2005-03-01

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Four-cycle

Variable clearance

C123S0780AA

Reexamination Certificate

active

06860244

ABSTRACT:
A system and method for detecting an operating mode of an engine or engine component modulate a first engine parameter and analyze a change in a second engine parameter in response to modulating the first engine parameter to detect a current operating mode based on changes in at least one of the first and second engine parameters. In a variable compression ratio (VCR) engine embodiment, the system and method modify ignition timing of at least one cylinder until engine knock is detected and determine whether the cylinder is operating in the lower compression ratio mode or the higher compression ratio mode by comparing the ignition timing change required to cause engine knock to a corresponding threshold.

REFERENCES:
patent: 4834031 (1989-05-01), Katoh et al.
patent: 4860711 (1989-08-01), Morikawa
patent: 6453854 (2002-09-01), Baeuerle et al.
patent: 6612288 (2003-09-01), Cullen
patent: 6631708 (2003-10-01), Russell et al.
patent: 6665605 (2003-12-01), Boyer et al.
patent: 6666177 (2003-12-01), Stiebels et al.

Affiliated with

Also associated with

Rating

Engine control with operating mode detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Engine control with operating mode detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine control with operating mode detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3367549