Device and method for lubricating a connecting rod bearing

US11359525B2 · kind B2 · utility

Assignee

• MAN Truck &Bus AG · DE

Inventors

• Thomas Malischewski · Heilsbronn, DE
• Jens Dietrich · Heilsbronn, DE
• Steffen Hirschmann · Neustadt an der Aisch, DE
• Dominik Renner · Ansbach, DE

Key dates

• Filing date: Dec 7, 2018
• Grant date: Jun 14, 2022
• Expiry date: Jul 31, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J1/09
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device lubricates a connecting rod bearing on a crankshaft of an internal combustion engine. The device has a piston having an internal piston cooling fluid channel, and an outlet channel in fluid communication with the fluid channel. The device has a connecting rod, which is connected to the piston in an articulated, in particular pivotable, manner, and has a large connecting rod eye and a connecting channel. The large connecting rod eye is formed for receiving the connecting rod bearing. The connecting channel forms a fluid connection between the outlet channel and the large connecting rod eye so that a fluid, in particular a cooling lubricating fluid (e.g. oil), can be fed, or is fed, from the fluid channel to the large connecting rod eye via the outlet channel and the connecting channel. The connecting rod bearing can be lubricated by cooling oil from the fluid channel of the piston.