Hydrodynamic Drive Train Cooling Circuit for Control Unit
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Solution Overview
Problem
The increased ambient temperature in vehicle engine compartments limits the operational time of electronic control units and solenoid valves in hydrodynamic machines, reducing their maximum allowable temperature and affecting the availability and lifespan of these components.
Innovation Solution
The integration of an electronic modular unit within the cooling medium circuit, where the control unit and control valves are directly exposed to the circulating cooling medium, allowing for efficient heat dissipation and maintaining a constant temperature, thereby extending the operational time and lifespan of the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the control unit and control valves are exposed to higher ambient temperatures in the engine compartment, then the operational time of these components is limited and their lifespan is reduced, but allowing higher ambient temperatures is necessary for vehicle performance in hot environments
Solution Approach 1:
A cooling device is introduced as an intermediary between the control unit/control valves and the hot ambient environment. This cooling device circulates cooling medium through channels in the housing of the control unit and control valves, actively removing heat and maintaining these components at acceptable temperatures despite high ambient conditions, thus preserving their operational availability and lifespan
Solution Approach 2:
The cooling device utilizes hydraulic principles by circulating a liquid cooling medium through channels formed in the housing of the control unit and control valves. The cooling medium absorbs heat from the electronic components and control valves, transporting it away to maintain safe operating temperatures, thereby resolving the contradiction between high ambient temperature exposure and component reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the hydrodynamic machine to operate effectively at higher ambient temperatures without reducing the lifespan of electronic components, enhancing the availability and reliability of the drive train system.
Implementation Method 1
heat is dissipated to the surroundings from the electronic modular unit and/or the control unit by circulation of the cooling medium of the cooling medium circuit around and/or past the modular unit and/or the control unit
Data Source
AI summary
A drive train having a hydrodynamic machine and a cooling medium circuit with a liquid or gaseous cooling medium. The hydrodynamic machine has at least one primary impeller, a secondary impeller, at least one control valve, and a control unit. The control unit actuates the at least one control valve in order to control the flow of the working medium into or out of the hydrodynamic machine. The secondary impeller and the at least one primary impeller form a working chamber that can be filled with a working medium. The cooling medium circuit is configured to cool the working medium and the control unit.