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.
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ASME 2010 Internal Combustion Engine Division Fall Technical Conference
September 12–15, 2010
San Antonio, Texas, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-4944-6
PROCEEDINGS PAPER
In-Cycle Closed Loop Control of the Fuel Injection on a 1-Cylinder Heavy Duty CI-Engine
Claes-Go¨ran Zander,
Claes-Go¨ran Zander
Scania CV AB / Lund University, Lund, Sweden
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Per Tunesta˚l,
Per Tunesta˚l
Lund University, Lund, Sweden
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Bengt Johansson
Bengt Johansson
Lund University, Lund, Sweden
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Claes-Go¨ran Zander
Scania CV AB / Lund University, Lund, Sweden
Per Tunesta˚l
Lund University, Lund, Sweden
Ola Stenla˚a˚s
Scania CV AB, Lund, Sweden
Bengt Johansson
Lund University, Lund, Sweden
Paper No:
ICEF2010-35100, pp. 405-414; 10 pages
Published Online:
January 10, 2011
Citation
Zander, C, Tunesta˚l, P, Stenla˚a˚s, O, & Johansson, B. "In-Cycle Closed Loop Control of the Fuel Injection on a 1-Cylinder Heavy Duty CI-Engine." Proceedings of the ASME 2010 Internal Combustion Engine Division Fall Technical Conference. ASME 2010 Internal Combustion Engine Division Fall Technical Conference. San Antonio, Texas, USA. September 12–15, 2010. pp. 405-414. ASME. https://doi.org/10.1115/ICEF2010-35100
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