A basic study on hybrid systems for small race car to improve dynamic performance using lap time simulation

Kobayashi, Ikkei and Ogawa, Kazuki and Uchino, Daigo and Ikeda, Keigo and Kato, Taro and Endo, Ayato and Mohamad Heerwan, Peeie and Narita, Takayoshi and Kato, Hideaki A basic study on hybrid systems for small race car to improve dynamic performance using lap time simulation. Actuators, 11 (7). pp. 1-17. ISSN 2076-0825. (Published)

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A hybrid vehicle is a vehicle with two or more power sources. We propose a hybrid system in which the engine torque converted by the transmission is combined with an electric motor torque. The proposed system reduces transmission because engine torque only acts during transmission. Furthermore, the proposed hybrid system’s simple structure uses lightweight chains and sprockets that can be laid out in various ways. The realization of the proposed hybrid system requires independent control algorithms for the two power systems, engine and electric motor, that take into consideration the state of the vehicle and the driver’s input; this system can be assumed to be a servo model system with multiple inputs and outputs and analyzed to obtain the optimal operation algorithm. To apply these controls to race cars, which are required to be fast, it is necessary to obtain the reference input, which is the optimal velocity and yaw angle while traveling the course of the servo system, and simulations of the competition track must be carried out. Therefore, the dynamic performance of the hybrid system was investigated by calculating the lap times on a given circuit using a quasi-steady-state method with low computational load and high prediction accuracy. In this study, the effects of changing the electric motor and final gear ratios on the driving performance of a rear-wheel-drive parallel hybrid system for optimization were investigated. The simulation results show that not only can the optimum settings be obtained by changing the final and electric motor reduction ratios on the evaluation circuit, but also that the optimum values vary across different speed ranges on different circuits.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Dynamic performance; Hybrid system; Lap time simulation; Small vehicle
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TS Manufactures
Faculty/Division: Faculty of Mechanical and Automotive Engineering Technology
Depositing User: Mr Muhamad Firdaus Janih@Jaini
Date Deposited: 11 Aug 2022 02:57
Last Modified: 11 Aug 2022 02:57
URI: http://umpir.ump.edu.my/id/eprint/34881
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