Internal combustion engine for a motor vehicle, having a control unit for aligning a camshaft and method for operating such an internal combustion engine

US11761356B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Johannes Ernst · Baden-Baden, DE
• Franz Huber · Tauberbischofsheim, DE
• Jochen Hufendiek · Stuttgart, DE
• Christian Lorenz · Hamburg, DE
• Tilmann Roemheld · Waiblingen, DE
• Frank Strauss · Midland School, US
• Ruediger Weiss · Metzingen, DE
• Hardy Weymann · Oberndorf, DE

Key dates

• Filing date: Aug 8, 2019
• Grant date: Sep 19, 2023
• Expiry date: Jan 12, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02N2019/008
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An internal combustion engine for a motor vehicle includes a crankshaft, a camshaft, a cylinder, a piston movably disposed in the cylinder and coupled to the crankshaft for driving the crankshaft, a first gas exchange valve which is assigned to the cylinder, a first valve clearance compensation device, where via the first valve clearance compensation device the first gas exchange valve is displaceable between a first open position and a first closed position by a first cam of the camshaft, and a control unit. The control unit is configured to align the camshaft such that the first valve clearance compensation device is pressure-loaded in the idle state of the crankshaft by a plateau area assigned to the first cam to hold the first gas exchange valve in the first open position.