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Driving force control system for vehicle

A technology of control system and driving force, applied in the direction of control device, vehicle components, driver input parameters, etc., can solve the problems of acceleration performance, strange and bad drivers, etc., and achieve the effect of improving acceleration performance and acceleration feeling.

Active Publication Date: 2016-10-05
TOYOTA JIDOSHA KK
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the driver may feel strange or uncomfortable, or feel that the acceleration performance or acceleration is not good

Method used

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  • Driving force control system for vehicle
  • Driving force control system for vehicle
  • Driving force control system for vehicle

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Embodiment Construction

[0044] Next, an embodiment of the present invention will be described with reference to the drawings. A vehicle to which the present invention can be applied is equipped with an automatic transmission capable of transmitting power generated by an engine to driving wheels while changing speed. The automatic transmission of the vehicle to which the present invention is applied may be a continuously variable transmission, for example, a belt type CVT or a toroidal CVT (toroidal CVT), which can continuously change a speed ratio. The present invention can also be applied to a hybrid vehicle including a power split device that combines and distributes power generated by an engine and an electric motor. That is, the power distribution device included in the hybrid vehicle functions as a so-called electric continuously variable transmission, and the electric continuously variable transmission can be considered as one type of automatic transmission according to the present invention. ...

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PUM

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Abstract

A driving force control system of a vehicle installed with an automatic transmission that transmits torque generated by an engine to drive wheels while changing the speed is provided for controlling driving force based on the vehicle speed and the accelerator operation amount. In the driving force control, an acceleration characteristic that defines the relationship between re-acceleration-time acceleration as a control index used when the vehicle travels while being re-accelerated after deceleration traveling, and the vehicle speed, is stored, and the re-acceleration-time acceleration corresponding to the current vehicle speed is obtained (step S3), based on traveling data of the vehicle obtained before the deceleration traveling, and the acceleration characteristic. Then, the speed ratio of the automatic transmission which can realize the obtained re-acceleration-time acceleration is set, before the re-acceleration traveling is started (step S4).

Description

technical field [0001] The present invention relates to a driving force control system for a vehicle, which controls the driving force of the vehicle by changing a speed ratio of an automatic transmission while the vehicle is running at a reduced speed. Background technique [0002] In Japanese Patent Application Publication No. 2007-170444 (JP 2007-170444 A), there is described a driving force control system for a vehicle that is executed when the accelerator pedal of the vehicle is released quickly. Control for suppressing upshifts is performed, and deceleration assist control including control for performing downshifts is executed when the brakes are suddenly applied to the vehicle. The driving force control system described in the aforementioned JP 2007-170444 A is configured to determine the conditions of the deceleration assist control as described above based on the running environment and running state of the vehicle. For example, the system determines whether to pe...

Claims

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Application Information

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IPC IPC(8): B60W30/14B60W30/19
CPCB60W30/143B60W30/19B60W2510/0638B60W2510/104B60W2520/10B60W2540/10B60W2720/10B60W2720/106
Inventor 山中聪桑原清二
Owner TOYOTA JIDOSHA KK
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