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Development of SPORT HYBRID i-MMD Control System for 2014 Model Year Accord

Article of Honda R&D Technical Review Vol.25 No.2

Summary

A highly efficient two-motor hybrid system named SPORT HYBRID Intelligent Multi-Mode Drive was developed and mounted in the 2014 model year Accord to meet global demands for CO2 reduction. The control system switches the three drive modes of “EV drive,” “Hybrid drive” and “Engine drive” according to the driving conditions. Together with hybridization, this helped to enhance fuel economy by 39%. In addition, cooperative control between components was developed that supports the large system configuration, and helped to achieve both reliability and driving performance. Installation of this system and control technology in an Accord plug-in hybrid achieved an EV driving range of 13 miles and fuel economy of 115 MPGe (Charge Depleting mode) and 46 mpg (Charge Sustaining mode). Furthermore, sufficient driving performance was also maintained while observing the constraints required to secure reliability.

Reference

(1) Higuchi, N., Sunaga, Y., Tanaka, M., Shimada, H.: Development of a New Two-Motor Plug-In Hybrid System, SAE 2013-01-1476 (2013)
(2) Yonekawa, A., Ueno, M., Watanabe, O., Ishikawa, N.: Development of New Gasoline Engine for ACCORD Plug-in Hybrid, SAE 2013-01-1738 (2013)
(3) Kuroki, J., Otsuka, H.: Development of Motor and PCU for Two-Motor Hybrid System, Honda R&D Technical Review, Vol. 25, No. 2, p. 42-48
(4) Ohkubo, N., Matsushita, S., Ueno, M., Akamine, K., Hatano, K.: Application of Electric Servo Brake System to Plug-In Hybrid Vehicle, SAE 2013-01-0697 (2013)

Author (organization or company)

Hirohito IDE(Automobile R&D Center)、Yoshihiro SUNAGA(Automobile R&D Center)、Naritomo HIGUCHI(Automobile R&D Center)

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