Browse Publications Technical Papers 2016-01-0654
2016-04-05

Development of a Rear Powertrain Cooling System for a Minivan 2016-01-0654

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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Further Inroads in the Shape Optimization of Radiator Tanks

2003-01-0530

View Details

TECHNICAL PAPER

Optimization Solutions for Fan Shroud

2016-01-1393

View Details

TECHNICAL PAPER

Towards Shape Optimization of Radiator Cooling Tanks

2002-01-0952

View Details

X