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Vehicle control device and vehicle control method

A technology of a control device and a control method, which is applied in the direction of control devices, vehicle components, transmission device control, etc., and can solve problems such as not being able to meet the driver's acceleration requirements

Active Publication Date: 2021-07-23
JATCO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, simply prohibiting stepped upshifts sometimes fails to meet the driver's acceleration requirements.

Method used

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  • Vehicle control device and vehicle control method
  • Vehicle control device and vehicle control method
  • Vehicle control device and vehicle control method

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0016] figure 1 is a schematic configuration diagram of the vehicle 100 . A vehicle 100 includes an engine 1 , an automatic transmission 3 as a continuously variable transmission, an oil pump 5 , drive wheels 6 , and a controller 10 as a control device.

[0017] The engine 1 is an internal combustion engine fueled by gasoline, light oil, or the like, and functions as a drive source for traveling. The engine 1 controls the rotational speed, torque, and the like in accordance with instructions from the controller 10 .

[0018] The automatic transmission 3 includes: a hydraulic torque converter 2, a coupling element 31, a belt type continuously variable transmission mechanism (hereinafter also referred to as "CVT") 30, a hydraulic control valve unit 40 (hereinafter also referred to simply as "valve unit 40") ) and an oil pan 32 for storing oil (working oil).

[0019] T...

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PUM

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Abstract

In the present invention a controller has a control unit for carrying out stepwise shifting in which a CVT is upshifted in a stepwise manner to accelerate a vehicle, and when the accelerator pedal is pressed continuously during a period from prior to a prohibition of stepwise shifting until after the prohibition of stepwise shifting, the control unit carries out a downshift control for downshifting the CVT.

Description

technical field [0001] The invention relates to a vehicle control device and a vehicle control method. Background technique [0002] In WO2015 / 046353A1, as a control method of a continuously variable transmission, a continuously variable transmission capable of steplessly changing the output rotation of a drive source is disclosed stepwise (stepwise) among a plurality of predetermined shift stages. Upshift control. [0003] This control is performed when the driver depresses the accelerator pedal to accelerate, and is a control for performing upshifts in steps (hereinafter, step upshifts are also referred to as "step shifts"). Therefore, the driving force (torque) transmitted to the drive wheels decreases stepwise as the vehicle speed increases. [0004] Therefore, when there is a major cause of increased running resistance of the vehicle, such as a large load on the drive wheels (for example, an uphill road with a steep road gradient, etc.), consider the stepwise nature o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/18F16H61/02F16H61/66
CPCF16H59/18B60W30/19B60W2510/10B60W10/101B60W2540/10B60Y2200/415F16H61/66227F16H2061/6615F16H2059/366F16H59/42F16H59/40F16H2059/663F16H59/44F16H59/54F16H61/16F16H2710/24
Inventor 李宗桓本间知明中野谕田上幸太郎牛久保佑介
Owner JATCO LTD