A New Approach To Smooth Shifting: Electro-Hydraulic Feedback Control For Automatic Transmissions

Format:

Conference/Event

Author/Creator:

Ikeura, Kenji, author.

Conference Name:

22nd FISITA Congress (2002-07-21 : ., Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

A. closed loop control system has been developed to minimize vehicle acceleration fluctuation during power-on upshift of an automatic transmission. This system senses the revolution speed of torque converter turbine runner, and controls the hydraulic pressure of clutch actuating cylinder during the shift sequence using a linear solenoid type electro-hydraulic pressure modulation valve so as to regulate the turbine runner speed on schedule.By the torsional rigidity of drive train, shorter torque phase brings smoother shifting. Opposing requirement exist to complete the torque phase quickly and to carefully limit clutch torque capacity. Discernment of clutch facing contact using pressure sensors is able to satisfy the requirement

Notes:

Vendor supplied data

Publisher Number:

885124

Access Restriction:

Restricted for use by site license