Method of controlling cyclic variation in engine combustion

Details Method of controlling cyclic variation in engine combustion Method of controlling cyclic variation in engine combustion

1998-05-08

1999-07-13

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123335, 12340624, 701105, 701111, F02M 700

Patent

active

059212217

ABSTRACT:
Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling.

REFERENCES:
patent: 4346625 (1982-08-01), Latsch et al.
patent: 4532592 (1985-07-01), Citron et al.
patent: 4919099 (1990-04-01), Extance et al.
patent: 5720260 (1998-02-01), Meyer et al.
"A Dynamical Instability Of Spark-Ignited Engines", by Jeffrey C. Kantor, Science, vol. 224, Jun. 15, 1984, pp. 1233-1235.
"The Influence of Arc Parameters on Combustion In A Spark-Ignition Engine", by M.S. Hancock et al, SAE Technical Paper No. 860321, Feb. 24-28, 1986, pp. 1-9.
"Cycle-to-Cycle Variations: A Chaotic Process?", by John W. Daily, Combust. Sci. & Tech., 1988, vol. 57, pp. 149-162.
"A Major Origin Of Cyclic Energy Conversion Variations In SI Engines: Cycle-by-Cycle Variations Of The Equivalence Ratio and Residual Gas of the Initial Charge", by G. Grunefeld et al, SAE Technical Paper No. 941880, Oct. 17-20, 1994, pp. 1-12.
"The Impact of Combustion Phasing on Cycle-by-Cycle Performance of a Spark Ignition Engine", by S.P. Stevens et al, SAE Technical Paper No. 950687, Feb. 27-Mar. 2, 1995, pp. 1-13.
"A Simple Model for Cyclic Variations in a Spark-Ignition Engine", by C.S. Daw et al, SAE Technical Paper No. 962086, Oct. 14-17, 1996, pp. 1-10.

Affiliated with

Also associated with

Rating

Method of controlling cyclic variation in engine combustion 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 of controlling cyclic variation in engine combustion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling cyclic variation in engine combustion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2267241