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Patent Searching and Data


Title:
DEVICE FOR CONTROLLING NUMBER OF ROTATIONS OF DRIVING FORCE SOURCE
Document Type and Number:
Japanese Patent JP2009121394
Kind Code:
A
Abstract:

To prevent incompatible feeling of a driver even if a vehicle reduces speed due to increase of traveling resistance, in the vehicle equipped with a CVT interlocking engine speed with vehicle speed change when acceleration is requested.

When it is determined that the vehicle speed SPD is in a deceleration state when the acceleration is requested (NO in S228), the lowering of the engine speed interlocking with the change of the vehicle speed SPD(Dnoutcvt) is suppressed (S232, S234), as compared with a case that the vehicle speed SPD is in an acceleration state (YES in the S228). The suppression of the lowering is carried out by making the interlocking dull by decreasing an absolute value of a deceleration state tilting coefficient b (SPD, ACCP) to be smaller than the absolute value of an acceleration state tilting coefficient a (SPD, ACCP). Therefore, the lowering of the engine speed is decreased even if the vehicle speed SPD is in the deceleration state when the acceleration is requested, and vehicle deceleration is not promoted, so that the generation of incompatible feeling of a driver can be prevented.


Inventors:
FUJIWARA HIRONARI
HINO AKIRA
Application Number:
JP2007298067A
Publication Date:
June 04, 2009
Filing Date:
November 16, 2007
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D29/00; B60W10/04; B60W10/06; B60W10/10; B60W10/101; F02D45/00; F16H61/04; F16H63/50; F16H59/48; F16H61/66
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda