In-cycle closed loop control of the fuel injection on a 1-cylinder heavy duty ci-engine

Claes Göran Zander*, Per Tunestal, Ola Stenlaas, Bengt Johansson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

The focus of this article is on implementation of real time combustion control by using an FPGA. The feedback used for the controller is the heat release. Due to the desire to avoid using division on the FPGA an alternative way of calculating the polytropic exponent is investigated. When this method is compared against using a constant exponent it shows less fluctuations in regards to cycle to cycle variations when calculating the heat release. A dual injection strategy is used and real time control is implemented on the second fuel injection. The calculated heat release is continuously compared with a reference and then the difference is converted to a duration correction of the fuel injection. This is done by a proportional controller which is initiated after the start of the second injection. By adding a perturbation on the first fuel injection the controller is shown to compensate during the second and thereby decreasing the cycle to cycle variations.

Original languageEnglish (US)
Title of host publicationASME 2010 Internal Combustion Engine Division Fall Technical Conference, ICEF2010
Pages405-414
Number of pages10
DOIs
StatePublished - Dec 1 2010
EventASME 2010 Internal Combustion Engine Division Fall Technical Conference, ICEF2010 - San Antonio, TX, United States
Duration: Sep 12 2010Sep 15 2010

Publication series

NameAmerican Society of Mechanical Engineers, Internal Combustion Engine Division (Publication) ICE
ISSN (Print)1066-5048

Other

OtherASME 2010 Internal Combustion Engine Division Fall Technical Conference, ICEF2010
CountryUnited States
CitySan Antonio, TX
Period09/12/1009/15/10

ASJC Scopus subject areas

  • Mechanical Engineering
  • Automotive Engineering

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