Valeo Presents Technical Papers at SAE 2003 World Congress that Address Challenges in Engine Cooling, Climate Control, Lighting, Data Transport, And Thermal Comfort
AUBURN HILLS, Mich., March 4 -- Valeo engineering staff professionals will present a range of technical papers this week at the SAE 2003 World Congress that address challenges in engine cooling, climate control, lighting, data transport, and thermal comfort.
Below is a summary of the technical papers Valeo will present. Power Line Communication Implementation in Electrical Architecture
By Anne Laliron, Olivier Maurice, and Alain Gascher of Valeo Electronics and Connective Systems
* Power line communication, which reduces the number of wires, is potentially an optimized way to transport data. This technology can offer substantial earnings, but the technology must be taken into account at the very beginning of a new harness design. Therefore, the paper concludes that a system approach is necessary to evaluate, technically and economically, power line communication technology.
Impact of Air-Oil Cooler Positions on the Performance of Air Conditioning Condensers
By Ying Tang of Valeo Engine Cooling
* In seeking an optimized position for an air to oil transmission cooler, this paper reports that the current Valeo proprietary combo cooler design provides a tighter package space while still performing as needed. It also provides a great cost benefit to car manufacturers and automotive suppliers.
Influence of Various Heat Transfers on Passenger Thermal Comfort
By David Roy and Pascale Petitjean of Valeo Climate Control and Denis Clodic of Center for Energy Studies of the Ecole des Mines de Paris
* As the function of A/C has evolved from the control of average in- vehicle temperature to the management of general thermal comfort, new parameters must be taken into account and new evaluation criteria are recommended. This paper describes the completion of a numerical study. As a next step, Valeo is building a Thermal Comfort Cabin to evaluate the influence of radiative heat transfers on passengers' thermal sensations.
A Comparison Between Climate Control Systems Providing Thermal Comfort During Vehicle Stops
By Gwenael Guyonvarch, Regine Haller, and Loic LePetit of Valeo Climate Control
* This paper evaluates ways to accommodate customer expectations for expanding the temporal scope of air conditioning in cars when the engine is off for "start-stop" operations or short parking or for cabin pre-cooling.
LED Module for Headlamp By Pierre Albou of Valeo Lighting Systems
* While LED technology improvements will provide new opportunities for the design of front lamps, LEDs have some drawbacks that make their use challenging. Having acknowledged these challenges, Valeo has come up with a new design for LED basic modules for headlamps.
Influence of Fan System Electric Power on the Heat Performance of Engine Cooling Module
By Ngy-Srun AP, Pascal Guerrero, and Philippe Jouanny of Valeo Engine Cooling
* This paper provides an examination of improving the engine cooling system and A/C systems by optimizing the electric fan system power, the fan blade diameter, and the fan shroud.
Application of Fault Tree Analysis for Predictive Reliability in Electronically Controlled Brushed Motors
By G. Michael Smith of Valeo Motors and Actuators Branch
* The process of creating an analytical fault tree is very extensive and detailed, but the work is justified (in the case of this motor electronics analysis) because it provides a prediction point to assess design changes and the impact of those changes to the system.
A Diesel Engine Thermal Transient Simulation and Coupling Between a Combustion Model and a Thermal Model
By F. Pirotais, J. Bellettre, O. Le Corre, and M. Tazerout of Department of Energetic and Environmental Engineering, Ecole des Mines de Nantes and G. De Pelsemaker, and G. Guyonvarch of Valeo Climate Control
* This paper provides a description of a realistic simulation of engine thermal transient behavior via a coupling between a combustion model and a thermal model of the engine cooling system.
Valeo is an independent industrial Group fully focused on the design, production and sale of components, integrated systems and modules for cars and trucks. Valeo ranks among the world's top automotive suppliers. The Group has 140 plants, 54 R&D centers, 9 distribution centers and employs 69,100 people in 25 countries worldwide.