The Universal Control and Protection Hydraulic Automaton for Hydromechanical Transmissions National Academy of Sciences of Belarus

Format:

Book

Conference/Event

Author/Creator:

Krasnevski, L., author.

Conference Name:

SAE 2001 World Congress (2001-03-05 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

Modern hydromechanical transmissions are equipped with electronic-hydraulic (mechatronic) control systems having much more functional capabilities compared to classic hydraulic systems.However, automatic hydraulic systems are widely used not only as the basic transmissions' control device and a mechanical part of mechatronic systems but also as an important facility providing reliability and safety of such systems.At the same time such an application has quite a number of restrictions, especially for transmissions with a great number of gearstages. One of the main reasons is the inability to control more than 3 or 4 stages of gears while using the vehicle's speed as a control parameter. It deals with the parabolic characteristic of the output pressure of centrifugal governor used as the vehicle speed sensor.This restriction can be eliminated by using a hydraulic detector of torque converter's turbine (id est input shaft of gearbox) speed. The paper considers the operating principles, design and testing of such a hydraulic automaton capable of controlling converter's lock-up clutch. It may be used in hydromechanical transmissions as the system's back up and protection or as a self-sufficient hydraulic automaton

Notes:

Vendor supplied data

Publisher Number:

2001-01-0879

Access Restriction:

Restricted for use by site license