Patent ID: 6595164
Filing Date: 2003-07-22
Classification: F01P

Abstract:
A cooling system for an internal combustion engine including a cylinder head and a cylinder block, each cooled by means of a liquid coolant, the system comprising:a coolant pump; a coolant radiator; coolant conduits in the cylinder head; coolant channels in the cylinder block; and a regulating device for separately regulating a cylinder head temperature and a cylinder block temperature, wherein the regulating device comprises a first valve connected downstream of and regulating coolant flow through the cylinder head and a second valve connected downstream of and regulating coolant flow through the cylinder block; wherein the first valve is a first thermostatic valve, the second valve is a second thermostatic valve, and the first thermostatic valve opens at a lower temperature than the second thermostatic valve; and wherein the first thermostatic valve is a thermostatic mixing valve, and wherein the liquid coolant flows from the cylinder head along one of a first flow path leading directly to the thermostatic mixing valve and a second flow path leading first to the coolant radiator and then to the thermostatic mixing valve.