ELECTRIC VEHICLE CONTROL DEVICE - TOYOTA MOTOR CO LTD

Title:

ELECTRIC VEHICLE CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2008/093687

Kind Code:

A1

Abstract:

A loss reduction module of an electric vehicle control device has a function to limit a torque no to exceed an equal loss characteristic (70) and issue a torque instruction if a requested torque exceeds the equal loss characteristic (70) when an echo-switch is turned ON and a low fuel consumption travel is instructed. More specifically, when a requested torque X exceeding the equal loss characteristic (70) is inputted, a torque limit is applied to a point Y on the equal loss characteristic (70). Accordingly, the torque instruction is outputted as a torque which is suppressed more than a characteristic curve (72) obtained by combining the equal loss characteristic (70) and a T-N characteristic (60) indicating the relationship between the torque T and the rpm N during a normal travel. Moreover, by using an equal efficiency characteristic, it is possible to modify the boosting ratio so as to improve the fuel consumption.

Inventors:

OKAMURA MASAKI (JP)
SUHAMA MASAYOSHI (JP)
IWATSUKI KEN (JP)

Application Number:

PCT/JP2008/051330

Publication Date:

August 07, 2008

Filing Date:

January 23, 2008

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
AISIN AW CO (JP)
OKAMURA MASAKI (JP)
SUHAMA MASAYOSHI (JP)
IWATSUKI KEN (JP)

International Classes:

B60L9/18; B60L50/16; B60W10/08; B60W20/00

Foreign References:

JP2004106663A	2004-04-08
JP2006345677A	2006-12-21
JP2004208409A	2004-07-22
JPH10243682A	1998-09-11
JPH10248106A	1998-09-14

Other References: