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Design and evaluation of an engine-in-the-loop environment for developing plug-in hybrid electric vehicle operating strategies at conventional test benches

Dietrich, Maximilian ; Ling, Kunxiong ; Schmid, Roland ; Song, Zhao ; Beidl, Christian (2024)
Design and evaluation of an engine-in-the-loop environment for developing plug-in hybrid electric vehicle operating strategies at conventional test benches.
In: Automotive and Engine Technology, 2021, 6 (3-4)
doi: 10.26083/tuprints-00023556
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Design and evaluation of an engine-in-the-loop environment for developing plug-in hybrid electric vehicle operating strategies at conventional test benches
Language: English
Date: 24 September 2024
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: [Cham]
Publisher: Springer International Publishing
Journal or Publication Title: Automotive and Engine Technology
Volume of the journal: 6
Issue Number: 3-4
DOI: 10.26083/tuprints-00023556
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Due to a large number of degrees of freedom and connected powertrain functionalities, the development of operating strategies for plug-in hybrid electric vehicles is an especially complex task. Besides optimizations of drivability, noise, vibrations and harshness as well as energy efficiency, the main challenge lies in ensuring emissions conformity. For this purpose, test vehicles are typically applied to achieve a realistic test and validation environment. However, operating strategy calibration using test vehicles has the drawbacks, that (i) it is very time consuming and cost intensive, (ii) it can only be conducted in late development phases and (iii) cannot be applied to reproducing driving loads for a valid comparison. To overcome these issues, this paper presents a consistent engine-in-the-loop approach combining real engine hardware and multiple software elements to represent PHEV behavior at the engine test bench. Thereby, an environment is created, which allows for realistic, flexible, cost efficient and reproducible testing. The effectiveness of the presented framework is evaluated by comparing relevant on-road measurements with their reproduction at the engine test bench. The results show that the vehicle on-road behavior can be replicated using the described testing environment. Particularly engine start/stop behavior and load levels — the core functionalities for operating strategy calibration — are matched. The proven level of realism in powertrain behavior enables further use cases beyond on-road measurement reproduction, i.e. varying individual component properties and observing real-world consequences at the test bench without the need for vehicle tests.

Uncontrolled Keywords: PHEV, Plug-in hybrid electric vehicle, Engine-in-the-loop, Test bench, Operating strategy
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-235561
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
600 Technology, medicine, applied sciences > 624 Civil engineering and environmental protection engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Internal Combustion Engines and Powertrain Systems (VKM)
Date Deposited: 24 Sep 2024 09:29
Last Modified: 21 Oct 2024 07:59
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23556
PPN: 522325769
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