In-Cycle Closed Loop Control Of The Fuel Injection On A 1-Cylinder Heavy Duty Ci-Engine
Author
Summary, in English
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 filet 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.
Department/s
Publishing year
2010
Language
English
Pages
405-414
Publication/Series
Proceedings of the ASME Internal Combustion Engine Division Fall Technical Conference
Document type
Conference paper
Publisher
American Society Of Mechanical Engineers (ASME)
Topic
- Other Mechanical Engineering
Conference name
Fall Technical Conference of the ASME Internal Combustion Engine Division, 2010
Conference date
2010-09-12 - 2010-09-15
Conference place
San Antonio, TX, United States
Status
Published
ISBN/ISSN/Other
- ISBN: 978-0-7918-4944-6