Method and apparatus for controlling engine torque

Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

36443107, F02D 4100

Patent

active

054798981

ABSTRACT:
A method for reducing the engine torque being produced by an internal combustion engine to a desired engine torque through coordinated control of spark retard, cylinder cut-out and air/fuel scheduling. The method is for use with a vehicle including a multi-cylinder internal combustion engine capable of generating torque, each cylinder having an associated fuel injector for providing fuel to the cylinder and an associated spark timing control for providing a spark for combustion of the fuel with fresh air during engine operation. The method includes identifying the desired engine torque to which the engine torque being produced is to be reduced, and determining a first torque reduction to be achieved by defueling at least one of the engine cylinders. The method also includes determining a second torque reduction to be achieved by lean air/fuel scheduling, the second torque reduction being adjusted for the number of cylinders defueled, and determining a third torque reduction to be achieved by spark retardation, the third torque reduction being adjusted for the number of cylinders defueled and for the lean air/fuel scheduling.

REFERENCES:
patent: 4853720 (1989-08-01), Onari et al.
patent: 5078109 (1992-01-01), Yoshida et al.
patent: 5190017 (1993-03-01), Cullen et al.
patent: 5241855 (1993-09-01), Cullen et al.
patent: 5333109 (1994-07-01), Oo et al.
patent: 5391127 (1995-02-01), Nishimura

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for controlling engine torque does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for controlling engine torque, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling engine torque will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-229298

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.