A Transient Diesel EMS Strategy for Online Implementation
Paper in proceeding, 2014

A recently developed strategy for diesel engine management systems is modified to reduce the implementation complexity. The strategy calculates set points for engine management system controllable quantities with an aim to minimize fuel consumption for a given engine speed and requested torque profile, while keeping accumulated emissions below given limits. The strategy is based on the methodology for steady-state engine operation, but extended to handle transient effects in the engine caused by dynamics in the air system. The strategy leads to the parametrization of mappings with two, three and four input dimensions respectively. In this paper, a modification of the strategy is proposed such that the memory demanding multidimensional mappings can be approximated in an engine management system using only two-dimensional grid maps. The modified strategy has been evaluated using a complete diesel engine vehicle system model simulating the NEDC driving cycle. The performance of the modified strategy has been compared with the original performance of the strategy. It is demonstrated that the modification of the strategy has very little impact on resulting performance of a vehicle but requires considerably less memory for implementation.

Author

Markus Grahn

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

Krister Johansson

Tomas McKelvey

Chalmers, Signals and Systems, Signal Processing and Biomedical Engineering

IFAC Proceedings Volumes (IFAC-PapersOnline)

14746670 (ISSN)

Vol. 19 11842-11847
978-390282362-5 (ISBN)

Areas of Advance

Information and Communication Technology

Transport

Energy

Driving Forces

Sustainable development

Subject Categories

Control Engineering

Signal Processing

DOI

10.3182/20140824-6-za-1003.01918

ISBN

978-390282362-5

More information

Latest update

8/8/2023 6