Ignition timing control system for internal combustion engine

Details Ignition timing control system for internal combustion engine Ignition timing control system for internal combustion engine

1991-07-29

1992-07-21

Argenbright, Tony M.

Internal-combustion engines

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

F02P 515

Patent

active

051313693

ABSTRACT:
A system for controlling ignition timing of a vehicle internal combustion engine, in which a plurality of sets of ignition timing control characteristics are established in response to the octane numbers of different kinds of fuel which may intentionally or unintentionally be used in the vehicle. The system infers the octane number of the fuel being used from the occurrence state of knock and selects the set of control characteristics corresponding to the selected fuel octane number, whereafter it determines the ignition timing based on the selected set of control characteristics. The system overcomes the disadvantages of the conventional system, namely that when the set of characteristics for low octane number fuel is misselected when the vehicle is running on high octane number fuel, resulting in unnecessary reduction of output torque, either the conditions under which it is possible to forcibly shift to the set of conditions for high octane number fuel are limited to special ones, specifically to low engine speed operating condition, or if not so limited, the knock which occurs when the forcible shift is carried out causes a shift in the opposite direction, whereby the control experiences undesirable hunting.

REFERENCES:
patent: 4630584 (1986-12-01), Higashiyama et al.
patent: 4854286 (1989-08-01), Chemnitzer
patent: 4898139 (1990-02-01), Kitayama et al.
patent: 4913116 (1990-04-01), Katogi et al.
patent: 4934327 (1990-06-01), Hidaka
patent: 4947817 (1990-08-01), Ido

Affiliated with

Also associated with

Rating

Ignition timing control system for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ignition timing control system for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ignition timing control system for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-837044