Patent · US Expired

Automatic transmission assembly and method of operating the same

US6494797B1 · kind B1 · utility

3Cited by

13References

30Claims

0Family size

Assignee

LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

Manfred Homm · Bühl, DE
Benjamin Kemmner · Baden-Baden, DE
Ivo Agner · Bogen, DE

Key dates

Filing date	Jul 5, 2000
Grant date	Dec 17, 2002
Priority date	—
Expiry date	Jul 5, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/662
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydraulically operated automatic transmission assembly wherein a group of dynamic fluid consumers including a continuously variable transmission or a planetary change-speed transmission and a clutch is regulated by a unit which receives pressurized hydraulic fluid from a pump. The pump further serves to supply fluid to several static consumers, such as a torque converter and one or more cooling and/or lubricating units. The fluid which is supplied to the static consumers is influenced by a hydraulic resistor, such as a diaphragm or a throttle, and the quantity of such fluid is maintained within an acceptable range irrespective of eventual leakage of fluid which is being conveyed to the dynamic consumers and irrespective of pronounced fluctuations in the quantity of fluid being necessary for certain modes of operation of the dynamic consumers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.