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control device

A technology for control devices and speed change devices, applied to transmission devices, transmission device control, fluid transmission devices, etc., can solve the problems of no specific description of the speed change mechanism, no specific description of the engagement pressure of the lock-up clutch, etc.

Active Publication Date: 2020-05-12
AISIN AW CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in Patent Document 1, there is no specific description of how to control the engagement pressure of the lock-up clutch in the slip start control.
In particular, the speed change mechanism in Patent Document 1 has a structure capable of performing only a continuously variable speed change that continuously changes the speed change ratio, and there is no specific description that the speed change mechanism can perform stepwise changes in the speed change ratio in addition to the continuously variable speed change. The control of the engagement pressure of the lock-up clutch in the case of the structure of the stepped shifting, there is no record that gives any suggestion on it.

Method used

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Embodiment Construction

[0021] Embodiments of the control device will be described with reference to the drawings. The control device 1 of the present embodiment is a control device for a vehicle transmission device 3 (hereinafter, simply referred to as "transmission device 3") as a control object. The transmission 3 of the present embodiment is basically constituted as a continuously variable transmission having a transmission mechanism 35 capable of performing a continuously variable transmission that continuously changes the transmission ratio.

[0022] Such as figure 1 As shown, the transmission device 3 has an input member 31 , a fluid coupling 32 with a lock-up clutch 33 , a transmission input member 34 , a transmission mechanism 35 and an output member 36 . The transmission mechanism 35 of the present embodiment includes a continuously variable transmission mechanism 35A and a forward / reverse switching mechanism 35B. In addition, the transmission 3 has a counter gear mechanism 37 and an outp...

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Abstract

The control device takes the transmission device for vehicles as the control object, and the transmission device for vehicles has: an input member (31), which is drivingly connected to the internal combustion engine; an output member, which is drivingly connected to the wheels; a fluid coupling, which has a lock-up clutch (33) ; Speed ​​change mechanism. The speed change mechanism is a structure capable of performing both continuously variable speed change and stepped speed change. In the case of stepwise shifting, the control device executes rotation maintaining engagement control in which the engagement pressure of the lockup clutch (33) is controlled so that the rotational speed of the input member (31) follows the target The rotational speed (Net) has nothing to do with the rotational speed change of the variable speed input member (34).

Description

technical field [0001] The present invention relates to a control device having a vehicle transmission as a control object. Background technique [0002] A transmission for a vehicle including a fluid coupling having a lock-up clutch is utilized. For example, Japanese Unexamined Patent Publication No. 2012-47254 (Patent Document 1) discloses a vehicle transmission having a fluid coupling including a lock-up clutch and a transmission mechanism on a power transmission path connecting an internal combustion engine and wheels. Regarding the control of the vehicle transmission, Patent Document 1 discloses slip start control that performs slip engagement of the lockup clutch when the vehicle is started. [0003] However, Patent Document 1 does not specifically describe how to control the engagement pressure of the lock-up clutch in the slip start control. In particular, the speed change mechanism in Patent Document 1 has a structure capable of performing only a continuously vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/14F16H37/02
CPCF16H37/022F16H59/42F16H59/70F16H61/143F16H2059/366F16H2061/146B60W10/026B60W10/06B60W10/107B60W10/11B60W30/19B60W2510/0638B60W2510/1005B60W2510/1015B60W2710/024B60W2710/0644B60W2710/1005B60W2710/1011F16H37/0846F16H2037/0873
Inventor 寺田宗功矶野武道泽田真田中直人
Owner AISIN AW CO LTD