Valve actuating mechanism for an internal combustion engine

US5413071A · kind A · utility

Assignee

• AUDI AG · DE

Inventors

• Michael Paul · Passau, DE
• Klaus Fuoss · Neckarsulm, DE
• Wilhelm Hannibal · Neckarsulm, DE

Key dates

• Filing date: May 13, 1994
• Grant date: May 9, 1995
• Expiry date: May 13, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L1/267
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve actuating mechanism is proposed for an internal combustion engine in which at least one intake valve E is actuatable optionally by a low-speed cam 2 or a high-speed cam. The first rocker lever 5 operates in conjunction with the low-speed cam 2 and the valve E, while the second rocker lever 8,9 operates in conjunction with the high-speed cam 7 and can be connected to the first rocker lever by means of a coupling bolt 12 mounted in a bore 10 of the first rocker lever 5 which is aligned with a bore 11 in the second rocker lever 8, 9 when both rocker levers are riding on the base circles of their cams. The coupling bolt 12 is moved into the coupling position against the force of a spring 17. The spring 17 rests on one side on the end of a pipe 20 connected to the coupling bolt 12 and on the other side on an insert 18 introduced into the bore 10, the pipe 20 extending through this insert 18. In order to achieve brief switching periods, the pipe 20 is provided in the vicinity of the reverse side 31 of the coupling bolt 12 with a cross hole 28 through which quick pressure increase and decrease on the reverse side 30 of the coupling bolt 12 is effected.