Title:
In-wheel motor drive
Document Type and Number:
Japanese Patent JP6274886
Kind Code:
B2
Abstract:
Provided is an in-wheel motor drive device which detects an abnormality with high precision over the entire operation range of a motor by measuring the temperatures of a lubricating oil and a motor coil. The in-wheel motor drive device includes an electric motor (1), a wheel bearing (5), a speed reducer (2), a lubricating oil supply mechanism (Jk), and a controller (U1). An oil temperature sensor (Sb) is disposed in a lubricating oil passage (29) in the speed reducer (2), and a coil temperature sensor (Sa) is disposed on a motor stator. The controller (U1) includes a motor output limit (95) that limits an electric current in the electric motor (1) when at least one of temperatures measured by the oil temperature sensor (Sb) and by the coil temperature sensor (Sa) has exceeded a corresponding predefined threshold.
Inventors:
Kenichi Suzuki
Application Number:
JP2014013290A
Publication Date:
February 07, 2018
Filing Date:
January 28, 2014
Export Citation:
Assignee:
ntn corporation
International Classes:
B60L3/00; B60K7/00; B60L15/20; H02P27/06
Domestic Patent References:
| JP2008168790A | ||||
| JP2013001203A | ||||
| JP2013126279A | ||||
| JP2006096242A | ||||
| JP2013085388A |
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto
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