Advanced Engine Cooling Thermal Management System on a Dual Voltage 42V-14V Minivan

2001 ◽  
Author(s):  
Matthieu Chanfreau ◽  
Alex Joseph ◽  
Darren Butler ◽  
Richard Swiatek
Keyword(s):  
Thermal Management ◽  
Management System ◽  
Engine Cooling ◽  
Thermal Management System

scholarly journals Optimal Thermal Management System for HALE UAV

1991 ◽  
Author(s):  
R. S. Patel ◽  
C. E. Lents
Keyword(s):  
Thermal Management ◽  
Management System ◽  
Waste Heat ◽  
Cooling System ◽  
Component Reliability ◽  
Engine Cooling ◽  
Thermal Management System ◽  
Rotary Engines ◽  
Development Risks ◽  
Recovery Approach

This paper discusses an optimal thermal management system for a High Altitude Long Endurance Unmanned Air vehicle (HALE UAV). It examines several configurations to reject waste heat from the vehicle’s propulsion engine cooling system as well as the avionic cooling system and identifies the configuration which has a minimum impact on aircraft endurance, component reliability, and development risks. The optimization process incorporates two basic heat rejection approaches. One is a conventional approach which rejects cooling system waste heat to the atmosphere, and the other is a waste heat recovery approach which converts a portion of the waste heat into electricity to power avionics. Both concepts were optimized for three types of propulsion engines: Spark Ignition Piston engines, Rotary engines, and Diesel engines.

A Hydraulic Actuated Automotive Thermal Management System: Theory and Experiment

2008 ◽  
Author(s):  
Peyton Frick ◽  
John Wagner ◽  
Parikshit Mehta
Keyword(s):  
Thermal Management ◽  
Management System ◽  
Cooling System ◽  
Operating Conditions ◽  
Water Pump ◽  
Coolant Pump ◽  
Engine Cooling ◽  
Thermal Management System ◽  
Compact Size ◽  
Computer Controlled

The performance of engine cooling systems can be improved by replacing the traditional mechanical driven radiator fan and water pump assemblies with computer controlled components. The power requirements for electric servo-motors increase with larger cooling demands which necessitate larger motors and/or a distributed configuration. One solution may be the use of hydraulic-based components due to their high power density and compact size. This paper investigates a thermal management system that features a computer controlled hydraulic actuated automotive fan and water pump. A mathematical model was derived for the hydraulic and thermal system components. To experimentally study the concept, a hydraulic driven fan and coolant pump were integrated with electric immersion heaters and radiator to emulate a vehicle cooling system. The dynamic model exhibited a strong correlation with the experimental test data. For a series of operating profiles, the servo-solenoid proportional control valves successfully tracked prescribed temperature set points to demonstrate that a hydraulic cooling system can maintain engine operating conditions.

scholarly journals Predicting unsteady heat transfer effect of vehicle thermal management system using steady velocity equivalent method

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110259
Author(s):  
Xiao Guoquan ◽  
Wang Huaming ◽  
Chen Lin ◽  
Hong Xiaobin
Keyword(s):  
Heat Transfer ◽  
Thermal Management ◽  
Management System ◽  
Exhaust System ◽  
Transfer Effect ◽  
Unsteady Heat Transfer ◽  
Thermal Management System ◽  
Comparison Results ◽  
Equivalent Method ◽  
Steady Velocity

In the process of vehicle development, the unsteady simulation of thermal management system is very important. A 3D-CFD calculation model of vehicle thermal management is established, and simulations were undertaken for uphill with full loads operations condition. The steady results show that the surface heat transfer coefficient increases to the quadratic parabolic relationship. The unsteady results show that the pulsating temperatures of exhaust and external airflow are higher than about 50°C and lower than 10°C, respectively, and the heat dissipating capacities are higher than about 11%. Accordingly, the conversion equivalent exhaust velocity increased by 1.67%, and the temperature distribution trend is basically the same as unsteady results. The comparison results show that the difference in the under-hood should be not noted, and that the predicted exhaust system surface temperatures using steady velocity equivalent method are low less 10°C than the unsteady results. These results show the steady velocity equivalent method can be used to predict the unsteady heat transfer effect of vehicle thermal management system, and the results obtained by this method are basically consistent with the unsteady results. It will greatly save computing resources and shorten the cycle in the early development of the vehicle thermal management system.

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