ELECTRIC AUTOMOBILE - NTN TOYO BEARING CO LTD

Title:

ELECTRIC AUTOMOBILE

Document Type and Number:

WIPO Patent Application WO/2013/069718

Kind Code:

A1

Abstract:

Provided is an electric automobile with left and right drive wheels driven by individual motors, wherein using a simple configuration allows for slip control without causing an uncomfortable feeling for a driver who has switched from an engine-operated vehicle with a differential gear. The invention can be applied to an electric automobile provided with motors (6, 6) that drive left and right drive wheels (2, 2), respectively. A control device (11) that controls the two motors (6, 6) is provided with a basic control means (14), a slip determination means (15), and a dual-wheel drive reduction means for slips (16). The basic control means (14) equalizes the drive force generated by the left and right motors (6) and sets the drive force on the basis of the degree of depression of an accelerator pedal (22). The slip determination means (15) determines a slip state between the drive wheels (2, 2) and a road surface. If the slip determination means (15) has determined that a large amount of slippage has occurred at at least one of the drive wheels (2), the dual wheel drive reduction means for slips (16) reduces the drive current of both the left and right motors (6, 6).

Inventors:

MAKINO TOMOAKI (JP)

Application Number:

PCT/JP2012/078929

Publication Date:

May 16, 2013

Filing Date:

November 08, 2012

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

B60L15/20; B60L9/18

Foreign References:

JP2006166572A	2006-06-22
JPH10295004A	1998-11-04
JPH02299402A	1990-12-11
JP2000221207A	2000-08-11
JPH11254986A	1999-09-21
JPH118901A	1999-01-12
JP2010220448A	2010-09-30
JP2009184662A	2009-08-20
JP2006258289A	2006-09-28

Other References: