Abstract

A new brake system, able to make efficient use of regenerative brakes while maintaining excellent brake feel, has been developed to increase the fuel economy of hybrid vehicles. A hydraulic servo was used as a base to enable mechanical operation of the service brakes; solenoid valves and brake fluid pressure sensors were added to this base to make it possible to control brake line pressure as demanded. The use of a stroke simulator in the hydraulic servo prevents brake feel from being affected by the control of the brake pressure.In addition, high-accuracy brake pressure control that functions cooperatively with the regenerative brakes is enabled– resulting in stable braking effectiveness. Fitted in a hybrid vehicle, this system has been shown to regenerate 46% more energy than the previous system.

References

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Author (organization or company)

• Yasushi AOKI（Automobile R&D Center）
• Kenji SUZUKI（Automobile R&D Center）
• Hiroshi NAKANO（Automobile R&D Center）
• Yoshikazu NOJIRI（Automobile R&D Center）

Publication Information

Article of Honda R&D Technical Review Vol.18 No.2 (60 - 66)

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Citation Information