Liquid-cooled four-valve cylinder head for a multi-cylinder internal combustion engine

US4957068A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Wolf-Dietrich Wagner · Stuttgart, DE
• Willi Springer · Göppingen, DE
• Ludwig Meissner · Reichenbach, DE
• Helmut Bonfert · Böblingen, DE
• Michael Bottcher · Stuttgart, DE
• Thomas Hardt · Waiblingen, DE
• Rolf Klumpp · Weingarten, DE
• Klaus Krause · Onex, CH
• Arndt Peters · Waiblingen, DE
• Ernst Plattner · Mannheim, DE
• Wolfgang Strobel · Tolland, US
• Wolfgang Waller · Stuttgart, DE
• Gunter Wiemann · Oppenweiler, DE

Key dates

• Filing date: Jun 8, 1989
• Grant date: Sep 18, 1990
• Expiry date: Jun 8, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A liquid-cooled, four-valve cylinder head for a multi-cylinder internal-combustion engine comprises a casting having a cooling-fluid space between the cylinder-head bottom and a cylinder-head cover in which supporting struts are arranged for reinforcing the cylinder-head bottom, valve channels of gas-reversing valves and chambers for receiving secondary combustion spaces. Above the cooling-fluid space is located a control space with guide housings for receiving the cup tappets for the actuation of the gas-reversing valves. In order to obtain a cylinder-head construction which is structurally rigid and nevertheless can easily be produced, the chambers are cast together with the valve channels within the cooling-fluid space. Further, the supporting struts are equipped with ribs projecting into adjacent combustion-space portions, and the lateral outer walls of the cylinder-head housing are connected to one another in the region of the control space by transverse booms.