Powertrain & Vehicle - Cooling System Design & OptimizationCustomer RequirementsManufacturers of commercial vehicles are facing a substantial increase of heat release into the cooling system. The main sources for this increase are: more stringent emissions leading to new combustion technologies and the use of cooled EGR, and increased power of the engines. The total increase in cooling requirement may be up to 20% over the current level.
At the same time the noise levels have to decrease and the fuel economy to be improved. This forces manufacturers to think about new concepts and optimised efficiency of the cooling system.
Modern simulation tools integrated in the design process are able to reduce losses, improve comfort and at the same time shorten the time to market and save development cost.
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AVL Strengths- Fast and flexible response to clients' project needs
- Wide collective experience from engine and powertrain development projects
- Synergies to AVL’s engineering know-how in all areas of powertrain applications
- AVL developed own simulation tools, which are continuously improved by AVL users
- Integration in the customer’s development process
- Close to the customer with AVL Tech-Centres world-wide
- AVL engine and material data base
Customer BenefitsOptimisation on virtual vehicle replaces prototype work
- Engineering loops on hardware are avoided
- Development cost reduction
- Reduced time to market
- Improved design quality on long lead items (i.e. crankcase and cylinder head castings, radiators, etc.)
- Reduction on tooling cost
- Reduction on prototype component cost
- Improved cooling system performance
- Smaller packaging
- Reduced noise
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AVL ApproachThe overall cooling system specification and optimisation is performed by a total system approach considering the heat input process, the internal and external coolant circuit, the oil circuit, and the external air flow. Depending on the depth of detail, advanced CFD simulation techniques are utilised to simulate the under-hood air flow in detail in case no measured data are available.
The resulting pressure, temperature and mass flow of the air, charge air, coolant, and lubrication oil are optimised by parametric studies in view of size, type and arrangement of the radiator, oil cooler and charge air cooler, and size, speed and type of the fan, for different vehicle operating conditions. |
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Services- Concept & Layout Design
- Performance Simulation
- Underhood Flow Analysis
- Testing / Verification
- Noise Reduction
Tools, Methods & TechnologiesFacilities & Resources |