Invention Grant
- Patent Title: Electric vehicle with pitch control device
- Patent Title (中): 带变桨控制装置的电动车
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Application No.: US12637819Application Date: 2009-12-15
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Publication No.: US08195351B2Publication Date: 2012-06-05
- Inventor: Masanori Ichinose , Tomohiko Yasuda , Takayuki Sato
- Applicant: Masanori Ichinose , Tomohiko Yasuda , Takayuki Sato
- Applicant Address: JP Tokyo
- Assignee: Hitachi Construction Machinery Co., Ltd.
- Current Assignee: Hitachi Construction Machinery Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2008-317810 20081215
- Main IPC: G06F19/00
- IPC: G06F19/00

Abstract:
Changes in the number of passengers or in load cause significant changes in vehicle weight, thus making it impossible to appropriately suppress a pitching motion of a vehicle chassis, hence rendering a necessary driving torque difficult to ensure, resulting in a decrease in drivability being insuppressible. An electric vehicle with a drive including a motor and a controller comprises a pitching quantity detector that detects a magnitude of a pitching motion of the vehicle, a vehicle weight determination unit that determines weight of the vehicle, a torque correction calculator that uses a traveling state of the vehicle and the determined vehicle weight to change a driving torque output from the drive, and a control gain varying element that adjusts a control gain of the torque correction calculator according to a magnitude of the vehicle weight value output from the vehicle weight determination unit.
Public/Granted literature
- US20100161164A1 ELECTRIC VEHICLE WITH PITCH CONTROL DEVICE Public/Granted day:2010-06-24
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