Modeling and Simulation of a Shift Hydraulic System for a Stepped Automatic Transmission The Ohio State University

Format:

Conference/Event

Author/Creator:

Watechagit, Sarawoot, author.

Conference Name:

SAE 2003 World Congress & Exhibition (2003-03-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

It is well-known that the shift hydraulic system plays a major role in the operation of stepped automatic transmissions. The main functions of the hydraulic system are to generate and maintain adequate fluid pressures for transmission operation, as well as to initiate gear shifts and control shift quality. Therefore, quantitative understanding of the dynamic behavior of the hydraulic system is critical to the improvement of automatic transmission performance. This paper presents the development of a nonlinear dynamic model for the shift hydraulic system of a stepped automatic transmission. The model includes all necessary dynamics, namely, hydraulic line pressure dynamics, solenoid valve dynamics, pressure control valve dynamics, as well as clutch and accumulator dynamics. The model is developed and implemented using Matlab/Simulink®, and is validated against experimental data. The results confirm that the model predicts hydraulic system dynamic response accurately, the prediction being robust to variation of the operating condition

Notes:

Vendor supplied data

Publisher Number:

2003-01-0314

Access Restriction:

Restricted for use by site license