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Continuously variable transmission control device and control method

一种无级变速器、控制装置的技术，应用在传动装置控制、带有齿的元件、皮带/链条/齿轮等方向，能够解决驾驶员不舒服等问题，达到防止感到不舒服的效果

Active Publication Date: 2020-10-30
JATCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the technique of Patent Document 1, since the amount of change in the input rotational speed when the gear ratio when switching to the manual mode is set to a predetermined fixed gear ratio is different depending on the transition timing to the manual mode, there is a possibility that the driver feels uncomfortable with such a question

Method used

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  • Continuously variable transmission control device and control method
  • Continuously variable transmission control device and control method
  • Continuously variable transmission control device and control method

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Embodiment Construction

[0015] figure 1 It is a schematic diagram showing the structure of the continuously variable transmission of the embodiment. The continuously variable transmission changes the speed of rotation output from the engine 1 and transmits it to the drive wheels 6 . The continuously variable transmission has: a hydraulic torque converter 2 , a forward and reverse switching mechanism 3 , a transmission mechanism 4 , and a differential gear 5 . The torque converter 2 has a lock-up clutch 2 a directly connected between an engine output shaft 10 connected to the engine 1 and a turbine shaft 11 . The forward / reverse switching mechanism 3 has: a planetary gear set, and a hydraulic actuator, that is, two frictionally engaged main components (a forward clutch to achieve a forward state through engagement, and a reverse clutch to achieve a reverse state through engagement). Hereinafter, these two frictional engagement main components are collectively referred to as a clutch 3a.

[0016] Th...

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Abstract

A continuously variable transmission of the present invention is provided with a variator (4), the gear ratio of which can be continuously changed, and a control unit (100). The control unit (100) continuously changes the gear ratio of the variator (4) according to a traveling state during a continuously variable transmission mode. During a manual mode in which a manual mode switch (36c) is on, the gear ratio is maintained. When a driver operates a shift switch (36a, 36b) during the manual mode, the control unit (100) performs gear change of the variator (4) such that the input rotational speed of the variator (4) is changed by a predetermined rotational speed (delta N1) that is preset, irrespective of the vehicle speed.

Description

technical field [0001] The present invention relates to a control device and control method of a continuously variable transmission that controls a gear ratio according to a driver's operation. Background technique [0002] Patent Document 1 has disclosed a technique related to a manual mode in which a plurality of fixed gear ratios can be selected from a continuously variable gear state by a gear lever operation. In the manual mode, there is an upshift switch and a downshift switch (collectively referred to as a shift switch) that are turned on when the shift lever is operated to the upshift side or the downshift side. Pre-set fixed gear ratio. In addition, when the ON time of the shift switch is longer than specified, the gear ratio can be continuously changed according to the ON time. [0003] However, in the technique of Patent Document 1, since the amount of change in the input rotational speed when the gear ratio when switching to the manual mode is set to a predeter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H59/06F16H59/18F16H59/70F16H61/66
CPCF16H61/66F16H2061/6616F16H2059/082F16H59/44F16H2059/366F16H59/044F16H59/06F16H59/18F16H2059/0239
Inventor 冈原谦岛田厚
Owner JATCO LTD
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