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:
Mar. 07, 1995
Filed:
Jan. 10, 1994
Franz Edmaier, Friedrichshafen, DE;
Gunther Kiefer, Markdorf, DE;
MTU Motoren- Und Turbinen-Union Friedrichshafen GmbH, Friedrichshafen, DE;
Abstract
A cooling system for a supercharged internal-combustion engine has a high-temperature and a low-temperature circulating system, in which two charge air coolers, through which coolant of different temperature levels flows, are provided for cooling the charge air in two stages. The high-temperature circulating system comprises a main branch with the internal-combustion engine and a high-temperature recooler which is connected in series with it. So that the total quantity of coolant may be kept low and a high degree of heat exchange can be achieved while the arrangement of the pipes is simple, the coolant quantity flowing out of the secondary circulating system is admixed to a coolant flow leading to the internal-combustion engine, and the total coolant flow flowing out of the internal-combustion engine is then guided to the high-temperature recooler. The coolant quantity required in the secondary branch is branched off the coolant flow flowing to the internal-combustion engine which flows away from the high-temperature recooler, and to which coolant quantities are possibly admixed that flow away from the high-temperature charge air cooler and from the low-temperature charge air cooler. The low-temperature circulating system comprises a low-temperature recooler with a series-connected low-temperature charge air cooler.