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2021 | OriginalPaper | Buchkapitel

A New Dynamic Approach for the Design of Energy Management Strategies for Hybrid Electric Vehicles

verfasst von : Bastian Beyfuss, Peter Hofmann, Bernhard Geringer

Erschienen in: Der Antrieb von morgen 2020

Verlag: Springer Fachmedien Wiesbaden

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Abstract

This paper presents a method to compute an approximation of actual internal combustion efficiency which is real time capable. Further, the implementation of this efficiency prediction into a hybrid electric vehicle energy management strategy is shown. It enables the computation of the optimal torque split under any varying condition. This real time capable approach, validated on the engine test bench, allows efficient operation of hybrid electric vehicles under real driving conditions. Research results show that, especially under conditions relevant for engine-knock, the potential fuel reduction is up to 10 % compared to actual known operating strategies exists.

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Vorheriges Kapitel TwinRex – The TwinConcept for a Serial-Parallel Hybrid System With an Excellent Cost-Value Index

Nächstes Kapitel Approach for Online Design of Experiments with Additional Constraint Modeling

This paper only covers spark ignited (SI) ICE, but some effects thus can be transferred to other engine types, as for example later ignition timing in a compression ignited ICE shows a similar effect.

For example, the actual operation will influence the oil and coolant warm up and the warm-up of a, if existing, charge air intercooler or exhaust system, which will influence the ignition timing and lambda control.

This defines directly \({P}_{ICE}\).

In case of a sufficiently strong electrical system.

Varying lower heating value, for example. due to different fuel qualities, can be neglected since the overall efficiency map is affected equally.

The measured lambda value should not be taken into consideration since the value oscillates just a few around the target and there are no benefits to expected by considering the actual value.

E. g. if different ignition timing maps are very similar the emulation of the basic ignition angle can be simplified.

Otherwise the correlation would have to be linear.

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Titel: A New Dynamic Approach for the Design of Energy Management Strategies for Hybrid Electric Vehicles
verfasst von: Bastian Beyfuss
Peter Hofmann
Bernhard Geringer
Verlag: Springer Fachmedien Wiesbaden
Buch: Der Antrieb von morgen 2020
Print ISBN: 978-3-658-35293-6

Electronic ISBN: 978-3-658-35294-3

Copyright-Jahr: 2021
DOI: https://doi.org/10.1007/978-3-658-35294-3_12

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