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Title: Method of controlling cyclic variation in engine combustion

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. 27 figs.

Inventors:
; ; ; ; ;
Issue Date:
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6446113
Patent Number(s):
5921221
Application Number:
PPN: US 9-075291
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (United States); Ford Motor Co., Dearborn, MI (United States); Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Resource Relation:
Patent File Date: 8 May 1998
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; CONTROL SYSTEMS; ENERGY EFFICIENCY; FUEL INJECTION SYSTEMS; IGNITION SYSTEMS; INTERNAL COMBUSTION ENGINES; EFFICIENCY; ENGINES; FUEL SYSTEMS; HEAT ENGINES; 330101* - Internal Combustion Engines- Spark-Ignition

Citation Formats

Davis, Jr, L I, Daw, C S, Feldkamp, L A, Hoard, J W, Yuan, F, and Connolly, F T. Method of controlling cyclic variation in engine combustion. United States: N. p., 1999. Web.
Davis, Jr, L I, Daw, C S, Feldkamp, L A, Hoard, J W, Yuan, F, & Connolly, F T. Method of controlling cyclic variation in engine combustion. United States.
Davis, Jr, L I, Daw, C S, Feldkamp, L A, Hoard, J W, Yuan, F, and Connolly, F T. Tue . "Method of controlling cyclic variation in engine combustion". United States.
@article{osti_6446113,
title = {Method of controlling cyclic variation in engine combustion},
author = {Davis, Jr, L I and Daw, C S and Feldkamp, L A and Hoard, J W and Yuan, F and Connolly, F T},
abstractNote = {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. 27 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}