Title:
SLIP CONTROL DEVICE FOR TORQUE CONVERTER
Document Type and Number:
WIPO Patent Application WO/2020/026717
Kind Code:
A1
Abstract:
This slip control device for a torque converter is provided with a calculating means (51) for calculating a target slip rotational speed of a lockup clutch (20) on the basis of a driving state of a vehicle, a calculating means (53A) for calculating a slip torque capacity of the lockup clutch (20) from a feed-forward control quantity based on the target slip rotational speed, and a feedback control quantity based on the target slip rotation speed and an actual slip rotational speed, a calculating means (59) for calculating an estimated engine torque by subjecting a torque signal from an engine (1) to a correction process using a gain, and a calculating means (58) for calculating an engagement command pressure of the torque converter (20) from the estimated engine torque and the slip torque capacity, and is also provided with a gain modifying means (60) for increasing the gain by a prescribed amount if the rate of change over time in the torque signal is equal to or greater than a first prescribed value as a result a vehicle acceleration operation.
Inventors:
SHU HAKU (JP)
Application Number:
PCT/JP2019/027076
Publication Date:
February 06, 2020
Filing Date:
July 09, 2019
Export Citation:
Assignee:
JATCO LTD (JP)
NISSAN MOTOR (JP)
NISSAN MOTOR (JP)
International Classes:
F16H59/14; F16H61/14
Foreign References:
| JP2017129232A | 2017-07-27 | |||
| JPH02180365A | 1990-07-13 | |||
| JP2004293744A | 2004-10-21 | |||
| JP2012117636A | 2012-06-21 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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