Performance Modeling and Optimization of a Novel Multi-mode Hybrid Powertrain

[+] Author and Article Information
Y. Zhang, H. Lin, B. Zhang

Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI 48128

C. Mi

Department of Electrical and Computer Engineering, University of Michigan-Dearborn, Dearborn, MI 48128

J. Mech. Des 128(1), 79-89 (Apr 26, 2005) (11 pages) doi:10.1115/1.2114892 History: Received January 14, 2004; Revised April 06, 2005; Accepted April 26, 2005

This paper presents a systematic model for the operation simulation and optimization of a novel multi-mode hybrid powertrain. The hybrid configuration proposed in the paper features a planetary gear train for an electric CVT mode in addition to lay-shaft gears for multiple speed ratios and realizes six operation modes in a simple structure. Detailed component level models were established for the multi-mode hybrid transmission and integrated to the overall vehicle model according to the system configuration using the Simulink/Advisor platform. The vehicle control strategy was then established with the objective to optimize the overall vehicle operation and each hybrid operation mode in terms of fuel economy and emission levels. The performance of the proposed hybrid vehicle system was studied using the developed model under various operation conditions and benchmarked with a current market model with leading performance parameters. The proposed hybrid configuration shows substantial improvements over the benchmark and is validated as a viable hybrid design based on the model simulation.

Copyright © 2006 by American Society of Mechanical Engineers
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Figure 1

Configuration of the multimode hybrid powertrain

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Figure 3

Engine minimal fuel curve

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Figure 4

Maximal engine efficiency curve

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Figure 5

Configuration of the integrated multimode hybrid vehicle model

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Figure 6

Transmission model block diagram

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Figure 7

Operation control block diagram

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Figure 8

Simulation results for UDDS driving cycle

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Figure 9

Contribution of operation modes in UDDS cycle

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Figure 10

Engine operation range in UDDS driving cycle

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Figure 11

Operation modes and battery status in highway cruising



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