COOLING CIRCUIT FOR A MOTOR VEHICLE HAVING A HYDRODYNAMIC RETARDER

摘要

A cooling circuit for a motor vehicle having a cooling medium pump that circulates a cooling medium in the cooling circuit having a hydrodynamic retarder. The cooling circuit further includes a main circuit in which the cooling medium pump and a drive motor of the motor vehicle, as well as a heat exchanger are positioned. A secondary branch of the cooling circuit includes a feed that branches off from the main circuit at a branch-off point and ends in the hydrodynamic retarder, and a return which proceeds from the hydrodynamic retarder and ends at a junction location in the main circuit. The return ends upstream of the branch-off location of the feed as viewed in a flow direction of the cooling medium in the main circuit, however on the same side of the cooling medium pump or at the branch-off location of the feed in the main circuit.

主权项

1. A cooling circuit for a motor vehicle, comprising:
a main circuit, including:
a cooling medium pump that circulates a cooling medium in said cooling circuit and said main circuit;a drive motor of the motor vehicle; anda heat exchanger, wherein said cooling medium pump and the drive, as well as the heat exchanger are configured to remove a heat of the cooling medium absorbed by the drive motor; and a secondary branch, including:
a hydrodynamic retarder positioned in the secondary branch of the cooling circuit, said hydrodynamic retarder including:
a bladed primary wheel and a bladed secondary wheel which together define a working chamber that can be filled with a working medium, wherein the working medium is said cooling medium;a feed which branches off from said main circuit at a branch-off location and ends in said hydrodynamic retarder; anda return which proceeds from said hydrodynamic retarder and ends at a junction location in said main circuit, wherein said return ends at least one of substantially at said branch-off location of the feed in the main circuit and at least partially upstream of said branch-off location of the feed as viewed in a flow direction of the cooling medium in said main circuit, however on a common side of the cooling medium pump in said main circuit.