The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1990
Filed:
Jun. 08, 1989
Wolf-Dietrich Wagner, Stuttgart, DE;
Willi Springer, Goppingen, DE;
Ludwig Meissner, Reichenbach, DE;
Helmut Bonfert, Boblingen, DE;
Michael Bottcher, Stuttgart, DE;
Thomas Hardt, Ostfildern, DE;
Rolf Klumpp, Kernen, DE;
Klaus Krause, Markgroningen, DE;
Arndt Peters, Weinstadt, DE;
Ernst Plattner, Mannheim, DE;
Wolfgang Strobel, Remshalden, DE;
Wolfgang Waller, Stuttgart, DE;
Gunter Wiemann, Oppenweiler, DE;
Daimler-Benz AG, , DE;
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.