Invention Grant
- Patent Title: Driving power control apparatus for four wheel drive vehicle
- Patent Title (中): 驱动四轮驱动车辆的动力控制装置
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Application No.: US12226821Application Date: 2007-05-18
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Publication No.: US08195348B2Publication Date: 2012-06-05
- Inventor: Ryoji Mizutani , Michitaka Tsuchida , Yasuaki Tahara , Tomohiro Fukushima , Masafumi Sakuma
- Applicant: Ryoji Mizutani , Michitaka Tsuchida , Yasuaki Tahara , Tomohiro Fukushima , Masafumi Sakuma
- Applicant Address: JP Toyota JP Kariya-Shi
- Assignee: Toyota Jidosha Kabushiki Kaisha,Aisin Seiki Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha,Aisin Seiki Kabushiki Kaisha
- Current Assignee Address: JP Toyota JP Kariya-Shi
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-144113 20060524
- International Application: PCT/JP2007/060664 WO 20070518
- International Announcement: WO2007/136122 WO 20071129
- Main IPC: B60L11/02
- IPC: B60L11/02 ; B60W20/00 ; B60W10/08

Abstract:
Front left and right wheel units are driven by an engine and a motor generator. Rear left and right wheel units are independently driven by in-wheel motor type motor generators. The motor generator and the motor generator are configured to have different rated outputs, respectively, and be subjected to different speed reduction ratios, respectively, between the motor generators and their respectively associated drive wheel units, and thus have characteristics, respectively, in efficiency with respect to torque and vehicular speed, that exhibit high efficiency in mutually different output ranges, respectively. When a mileage oriented mode is selected as a traveling mode, an ECU determines how a drive torque should be allocated between the motor generators, as based on the motors' required drive torque and vehicular speed and on each motor generator's characteristic in efficiency, to maximize the motor generators' total efficiency.
Public/Granted literature
- US20090088914A1 Driving Power Control Apparatus for Four Wheel Drive Vehicle Public/Granted day:2009-04-02
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