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A Diesel Engine Management System Strategy for Transient Engine Operation

Markus Grahn (Institutionen för signaler och system, Signalbehandling) ; Krister Johansson ; Tomas McKelvey (Institutionen för signaler och system, Signalbehandling)
7th IFAC Symposium on Advances in Automotive Control Vol. 7 (2013), 1, p. 1-6.
[Konferensbidrag, refereegranskat]

A strategy for diesel engine management systems has been introduced and evaluated. 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 existing methodology for steady-state engine operation, but extended to handle transient effects in the engine caused by dynamics in the air system. The strategy has been evaluated using a simulation model of a diesel engine system. The model estimates fuel consumption together with NOX and soot emissions for a transient simulation cycle depending on set points in the engine management system for boost pressure, oxygen fraction in the intake manifold, and injection timing. For the transient simulation scenario used in this paper and with given limits on accumulated emissions, the strategy has been shown to decrease fuel consumption with up to 0.7% compared to a strategy that is based only on steady-state engine operation.

Nyckelord: Diesel engines, Engine management, Optimization, Transient

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Denna post skapades 2013-09-11. Senast ändrad 2014-09-02.
CPL Pubid: 183072