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:
Nov. 11, 1986
Filed:
Sep. 11, 1985
Heribert Kubis, Nuremberg, DE;
M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft, Nuremberg, DE;
Abstract
A common coolant circuit for cooling an internal combustion engine, on the one hand, and the charge air and possibly other media, on the other hand. In order to achieve a constant positive flow through the charge air cooler (intercooler) of a coolant which is at a low temperature level of 45.degree. C. or less and, respectively, to ensure rapid heating of the engine after cold starting, a single four-way thermostat incorporating a double valve is provided. In the cold starting mode, the valve causes a bypass operation of the coolant in the cooling jacket of the engine and the coolant in the common cooling circuit, in conjunction with a separate coolant pump for each. In the hot operating mode, the valve controls circulation of a pre-determined coolant flow in the cooling circuit. The thermostat element of the thermostat is constantly exposed, during this process, to a pre-determined coolant flow from the cooling jacket of the engine (more specifically the coolant outlet of the engine).