Control of the low-load region in partially premixed combustion

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Standard

Control of the low-load region in partially premixed combustion. / Ingesson, Gabriel; Yin, Lianhao; Johansson, Rolf; Tunestål, Per.

Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). Vol. 744 1. ed. IOP Publishing, 2016. 012106.

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Harvard

Ingesson, G, Yin, L, Johansson, R & Tunestål, P 2016, Control of the low-load region in partially premixed combustion. in Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). 1 edn, vol. 744, 012106, IOP Publishing, Movic & Rasd 2016, Southampton, United Kingdom, 2016/07/03. https://doi.org/10.1088/1742-6596/744/1/012106

APA

Ingesson, G., Yin, L., Johansson, R., & Tunestål, P. (2016). Control of the low-load region in partially premixed combustion. In Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016) (1 ed., Vol. 744). [012106] IOP Publishing. https://doi.org/10.1088/1742-6596/744/1/012106

CBE

Ingesson G, Yin L, Johansson R, Tunestål P. 2016. Control of the low-load region in partially premixed combustion. In Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). 1 ed. IOP Publishing. https://doi.org/10.1088/1742-6596/744/1/012106

MLA

Ingesson, Gabriel et al. "Control of the low-load region in partially premixed combustion". Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). 1 udg., IOP Publishing. 2016. https://doi.org/10.1088/1742-6596/744/1/012106

Vancouver

Ingesson G, Yin L, Johansson R, Tunestål P. Control of the low-load region in partially premixed combustion. In Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). 1 ed. Vol. 744. IOP Publishing. 2016. 012106 https://doi.org/10.1088/1742-6596/744/1/012106

Author

Ingesson, Gabriel ; Yin, Lianhao ; Johansson, Rolf ; Tunestål, Per. / Control of the low-load region in partially premixed combustion. Journal of Physics: Conference Series: proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016). Vol. 744 1. ed. IOP Publishing, 2016.

RIS

TY - GEN

T1 - Control of the low-load region in partially premixed combustion

AU - Ingesson, Gabriel

AU - Yin, Lianhao

AU - Johansson, Rolf

AU - Tunestål, Per

PY - 2016/10/3

Y1 - 2016/10/3

N2 - Partially premixed combustion (PPC) is a low temperature, direct-injection combustion concept that has shown to give promising emission levels and efficiencies over a wide operating range. In this concept, high EGR ratios, high octane-number fuels and early injection timings are used to slow down the auto-ignition reactions and to enhance the fuel and are mixing before the start of combustion. A drawback with this concept is the combustion stability in the low-load region where a high octane-number fuel might cause misfire and low combustion efficiency. This paper investigates the problem of low-load PPC controller design for increased engine efficiency. First, low-load PPC data, obtained from a multi-cylinder heavy- duty engine is presented. The data shows that combustion efficiency could be increased by using a pilot injection and that there is a non-linearity in the relation between injection and combustion timing. Furthermore, intake conditions should be set in order to avoid operating points with unfavourable global equivalence ratio and in-cylinder temperature combinations. Model predictive control simulations were used together with a calibrated engine model to find a gas-system controller that fulfilled this task. The findings are then summarized in a suggested engine controller design. Finally, an experimental performance evaluation of the suggested controller is presented.

AB - Partially premixed combustion (PPC) is a low temperature, direct-injection combustion concept that has shown to give promising emission levels and efficiencies over a wide operating range. In this concept, high EGR ratios, high octane-number fuels and early injection timings are used to slow down the auto-ignition reactions and to enhance the fuel and are mixing before the start of combustion. A drawback with this concept is the combustion stability in the low-load region where a high octane-number fuel might cause misfire and low combustion efficiency. This paper investigates the problem of low-load PPC controller design for increased engine efficiency. First, low-load PPC data, obtained from a multi-cylinder heavy- duty engine is presented. The data shows that combustion efficiency could be increased by using a pilot injection and that there is a non-linearity in the relation between injection and combustion timing. Furthermore, intake conditions should be set in order to avoid operating points with unfavourable global equivalence ratio and in-cylinder temperature combinations. Model predictive control simulations were used together with a calibrated engine model to find a gas-system controller that fulfilled this task. The findings are then summarized in a suggested engine controller design. Finally, an experimental performance evaluation of the suggested controller is presented.

U2 - 10.1088/1742-6596/744/1/012106

DO - 10.1088/1742-6596/744/1/012106

M3 - Paper in conference proceeding

VL - 744

BT - Journal of Physics: Conference Series

PB - IOP Publishing

ER -