Rocker arm arrangement with a bearing shell provided with grooves

US8096274B2 · kind B2 · utility

Assignee

• MAN Nutzfahrzeuge AG · DE

Inventor

• Werner Vogel · Jena, DE

Key dates

• Filing date: Jan 15, 2009
• Grant date: Jan 17, 2012
• Expiry date: Nov 18, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L1/181
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Rocker arm arrangement of an internal combustion engine has a bearing journal with a central axis and an outside circumferential surface running in the central bore of a rocker arm lined with a bearing shell. The bearing journal has a first transverse oil channel leading to at least one outlet at the running surface underneath the central axis. The bearing shell has an outer shell surface and an inner shell surface. The inner shell surface has a circumferentially extending internal groove, both ends of which terminate underneath the central axis, this groove extending to the outlet of the first oil channel when the rocker arm is in its base position. The outer shell surface has at least one circumferentially extending external groove, which extends as far as an inlet of a second oil channel passing through the rocker arm. At least one through-opening connects the internal groove and the external groove.