Valve train of an internal combustion engine

US11041416B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Patrick Altherr · Stuttgart, DE
• Thorsten Ihne · Stuttgart, DE
• Herrn R. Kirschner · Eßlingen, DE
• Mario Mohler · Stuttgart, DE
• Markus Walch · Bretten, DE

Key dates

• Filing date: Mar 12, 2020
• Grant date: Jun 22, 2021
• Expiry date: Mar 12, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2305/02
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve train of an internal combustion engine may include a camshaft, first and second cams, a rocker arm assembly having a displacement bolt, which may be adjustable between at least first and second positions in the axial direction and on which at least one cam roller, may be mounted in an axially fixed and rotatable manner, wherein the displacement bolt may be mounted in associated bearing lugs of the rocker arm assembly, a guide contour arranged on the camshaft and having first and second guide tracks, a switching pin, which may be arranged in the displacement bolt and which may optionally engage with the first or second guide track to adjust the displacement bolt between the first and second positions. In the first and second positions, the cam roller may cooperate with the first and second cams, respectively. First and second catch recesses may be provided on the displacement bolt. A catch device may engage with a catch element, which may be biased into the first or second catch recess and which may secure the displacement bolt in the first or second position. The first and second guide tracks may cross one another in a crossing region. A third catch recess may be provided b…