Patent ID: 7168398
Filing Date: 2007-01-30
Classification: F01P,F02B,Y02T

Abstract:
1. A system for managing the heat energy developed by a heat engine of a motor vehicle comprising a main system ( 2 ) equipped with a main pump ( 12 ) to make a coolant fluid circulate between the heat engine ( 10 ) and a main cooling radiator ( 18 ) having an exchange area and exchanging heat with the external atmospheric air, the main system ( 2 ) furthermore comprising a short-circuit pipeline ( 20 ) and a heating pipeline ( 22 ) comprising an air heater ( 24 ), and a secondary loop ( 4 ) including a secondary radiator ( 60 ) having an exchange area and a secondary pump ( 58 ), wherein the main radiator ( 18 ) or the secondary radiator ( 60 ) is divided into at least two separate heat exchange sections ( 144 , 146 ), the change from one configuration to the other is carried out in increments, by the switching of a heat exchange section from one circuit to the other, and the main system ( 2 ) and the secondary loop ( 4 ) are connected by interconnecting means ( 6 ) which make it possible to control coolant fluid circulation between the main system ( 2 ) and the secondary loop ( 4 ) or to prohibit this circulation depending on the load state of the heat engine ( 10 ), wherein the main system ( 4 ) comprises a three-way ( 30 - 1 , 30 - 2 , 30 - 3 ) thermostatic valve ( 30 ), a first way ( 30 - 1 ) connected to the engine pipeline ( 8 ), a second way ( 30 - 2 ) being connected to a short-circuit pipeline ( 20 ), and a third way ( 30 - 3 ) connected to a main cooling radiator pipeline.