This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Development of a Rear Powertrain Cooling System for a Minivan
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
Annotation ability available
The paper presents the development of a proposed rear powertrain cooling system of a minivan. The packaging of cooling system is finalized such that the radiator faces towards the rear of the vehicle bumper which is opposite to the conventional rear cooling system (i.e. radiator faces towards the front of the vehicle).
In the small minivan, the space ahead of the engine is used as a floor for passenger foot. Due to these space constraints, the cooling system has no choice, but to move rear of the vehicle and above the departure plane to meet packaging requirements. Furthermore, in the conventional rear cooling system, in front of the radiator, there is engine and exhaust system, which heats up the air going to the radiator and reduces radiator cooling performance. Thus the cooling system is placed such that the radiator faces the rear bumper to draw in cooler air. In this condition we don’t depend on the ram air but on the fan to meet required airflow.
1D simulation using LMS-Amesim and CFD tools FLUENT are used for conceptual study. Comparison study on air flow, cooling performance and under-hood temperature is done by testing on a mule vehicle. Grill opening, departure angle, critical components heights and surrounding body panels for underbody are considered in packaging of the vehicle.
The air flow, ROA of Coolant and ROA of Oil are measured for two conditions, i.e. radiator facing towards rear bumper and radiator facing towards powertrain. It is observed that the effect of rear vortex has negligible impact on the airflow provided by the fan, for vehicle speed less than 65kmph.
|Technical Paper||Further Inroads in the Shape Optimization of Radiator Tanks|
|Technical Paper||Optimization Solutions for Fan Shroud|
|Technical Paper||Towards Shape Optimization of Radiator Cooling Tanks|
CitationBrahmasani, L., K, S., Solomon, S., and Khan, P., "Development of a Rear Powertrain Cooling System for a Minivan," SAE Technical Paper 2016-01-0654, 2016, https://doi.org/10.4271/2016-01-0654.
- Brezek , R. Rear fender accommodation of radiator for rear engine vehicle US2581072 1948
- Prevost , CP. Radiator system for use on automobiles having rear engines US6505696 B1 2003
- Bilge , E. Thermal management concept of a taxi vehicle with rear engine application Turkey 2011
- T , R. and Pol , S. Development of a Cost Effective Power Train Cooling System for a Passenger Car with Rear Engine SAE Technical Paper 2009-01-0169 2009 10.4271/2009-01-0169
- Larsson , L. , Wiklund , T. , and Löfdahl , L. Cooling Performance Investigation of a Rear Mounted Cooling Package for Heavy Vehicles SAE Technical Paper 2011-01-0174 2011 10.4271/2011-01-0174
- Larsson , L. , Löfdahl , L. , Dahl , E. , and Wiklund , T. Continuing Cooling Performance Investigation of a Rear Mounted Cooling Package for Heavy Vehicles SAE Technical Paper 2011-01-2285 2011 10.4271/2011-01-2285
- LMS Amesim http://www.plm.automation.siemens.com