Patent · US Active

Variable valve train for an engine braking mode

US12060815B2 · kind B2 · utility

0Cited by

0References

21Claims

0Family size

Assignee

MAN Truck & Bus SE · DE

Inventors

Thomas Malischewski · Heilsbronn, DE
Steffen Hirschmann · Neustadt an der Aisch, DE
Andreas Bug · Munich, DE

Key dates

Filing date	Jul 17, 2020
Grant date	Aug 13, 2024
Priority date	—
Expiry date	Jul 17, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2820/031
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a variable valve train for switching an outlet valve of an internal combustion engine to an engine braking mode. The variable valve train has a camshaft with a first cam, which is designed as a normal operation cam, and a second cam, which is designed as an engine braking cam. A first rocking lever has a first stroke device which is designed for selectively making or breaking a first operative connection between the first cam and the outlet valve by means of the first rocking lever. A second rocking lever has a second stroke device which is designed for selectively making or breaking a second operative connection between the second cam and the outlet valve by means of the second rocking lever. A valve device selectively connects the first stroke device or the second stroke device to a fluid feed line.

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