Title:
VEHICULAR LOCK-UP CONTROL METHOD AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/068717
Kind Code:
A1
Abstract:
The present invention prevents engagement shock and juddering during slip control that is performed during lock-up control, even if an accelerator is pushed just before a lock-up clutch is engaged. According to the present invention, an engined vehicle comprises a torque converter (4) that has a lock-up clutch (3) and that is arranged between an engine (1) and a continuously variable transmission (6). When a request for engagement of the lock-up clutch (3) is made, the engined vehicle performs start-time lock-up control that achieves engagement through slip control that increases lock-up capacity and gradually reduces a slip rotational speed, which is an input/output rotational speed difference for the lock-up clutch (3). During the slip control of the start-time lock-up control, if the slip rotational speed enters a smooth ON control range that is at or below a first set value N1, the engined vehicle performs second engine-torque reduction control that reduces the torque of the engine (1) below the normal torque that is applied in response to a driver request.
Inventors:
TOHTA YUZURU (JP)
Application Number:
PCT/JP2015/079977
Publication Date:
April 27, 2017
Filing Date:
October 23, 2015
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02D29/00; B60W10/04; B60W10/06; B60W10/10; F16H61/14
Foreign References:
| JP2004138147A | 2004-05-13 | |||
| JPH07101273A | 1995-04-18 |
Other References:
See also references of EP 3366905A4
Attorney, Agent or Firm:
NISHIWAKI, Tamio (JP)
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