Patent · US Active

Method for assisted upshifting and device for this purpose

US10724455B2 · kind B2 · utility

1Cited by

5References

18Claims

0Family size

Assignee

MAN Truck &Bus AG · DE

Inventors

Steffen Hirschmann · Neustadt an der Aisch, DE
Thomas Malischewski · Heilsbronn, DE
Dominic Hyna · Fürth, DE

Key dates

Filing date	May 18, 2018
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Oct 11, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for assisted upshifting in a gear change of a transmission connected to a combustion engine. The method comprises the initiation of an upshifting process. The method comprises the reduction of an engine speed of the combustion engine by switching to an engine-braking mode, wherein a variable valve gear, in particular a trip cam system, of the combustion engine serves for switching to the engine-braking mode. Alternatively or in addition, in the engine-braking mode a first exhaust valve of the combustion engine is at first kept closed during the compression stroke and/or during the exhaust stroke for the compression of air and is opened before reaching a top dead centre of a piston movement for decompression of the compressed air.

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