Patent · US Active

Variable valve gear with braking cams

US10533466B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

MAN Truck &Bus AG · DE

Inventors

Steffen Hirschmann · Neustadt an der Aisch, DE
Thomas Malischewski · Heilsbronn, DE
Andreas Sommermann · Heilsbronn, DE
Jürgen Ritter · Nuremberg, DE

Key dates

Filing date	Mar 30, 2018
Grant date	Jan 14, 2020
Priority date	—
Expiry date	Mar 30, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2013/0052
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A variable valve gear for an internal combustion engine of a motor vehicle has a cam carrier which is arranged on a camshaft in a manner which prevents relative rotation and allows axial movement between a first axial position and a second axial position and has a first cam and a second cam. The first cam is designed for a normal mode of the internal combustion engine, in which the first cam keeps a first exhaust valve open in the exhaust stroke. The second cam is designed for an engine braking mode of the internal combustion engine, in which the second cam initially keeps the first exhaust valve closed in the compression stroke and/or in the exhaust stroke and opens the first exhaust valve before reaching a top dead center of a piston movement.

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