Patent · US Active

Hydraulic system of an automatic gearbox

US10619726B2 · kind B2 · utility

2Cited by

3References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Alexander Paul · Kempen, DE
Bernd Lutz · Überlingen, DE

Key dates

Filing date	Jul 22, 2016
Grant date	Apr 14, 2020
Priority date	—
Expiry date	Oct 13, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2312/14
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydraulic system (1) of an automatic transmission of a motor vehicle includes a hydraulic pump (2) powered by a drive engine for supplying pressure to the hydraulic system (1). A hydraulic reservoir (10) by which, when the drive engine is at rest, a pressure drop in a main pressure circuit (7) of the hydraulic system (1) can at least be delayed. The hydraulic reservoir (10) is connected to the main pressure circuit (7) by way of an orifice (14) or a throttle.

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