Knock-suppressive spark ignition timing control system for an in

Details Knock-suppressive spark ignition timing control system for an in Knock-suppressive spark ignition timing control system for an in

1988-08-29

1990-06-19

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

F02P 514

Patent

active

049343270

ABSTRACT:
A spark advance control system includes a high octane value spark advance schedule and a regular octane value spark advance schedule, respectively including advance limits and retard limits at different spark advance angles. Spark advance control schedules are selected during normal spark advance control operation. The high octane value spark advance schedule is selected when spark advance is maintained at an angular value higher than a predetermined regular-to-high octane value schedule switching, which is set near an advance limit in the regular octane value spark advance schedule. In the alternative, the regular octane value spark advance schedule is selected when spark advance is maintained at an angular value lower than a predetermined high-to-regular octane value schedule switching criterion, which is set near the retard limit in the high octane value spark advance schedule. The spark advance control schedule selection set forth above successfully avoids uncomfortably rapid and substantial changes of engine output characteristics, even when the gasoline type is changed.

REFERENCES:
patent: 4509331 (1985-04-01), Hirabayashi
patent: 4586475 (1986-05-01), Takahashi et al.
patent: 4630584 (1986-12-01), Higashiyama et al.

Affiliated with

Also associated with

Rating

Knock-suppressive spark ignition timing control system for an in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Knock-suppressive spark ignition timing control system for an in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Knock-suppressive spark ignition timing control system for an in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2253148