Research and Markets: Examination of the New Challenges of Noise, Vibration and Harshness (NVH) Facing Electric Vehicles

DUBLIN--Research and Markets (http://www.researchandmarkets.com/research/c1ff1b/noise_vibration_a) has announced the addition of the "Noise, Vibration and Harshness (NVH) in Electric Vehicles" report to their offering.

“Noise, Vibration and Harshness (NVH) in Electric Vehicles”

The advent of cars with electric power trains, whether hybrid or battery electric vehicles, presents new challenges to Noise, Vibration and Harshness (NVH) engineers. The electric drive trains at low speeds are far quieter than internal combustion engines (ICE), which allow sounds that have been masked in traditional cars to emerge. Additionally, the electric machines create their own new noises and vibrations. And for hybrid vehicles (HEV), there is the additional challenge of transitional sounds between ICE and electric drive.

Finally, there is the problem of too little noise when running on electricity, which has led groups representing blind persons to campaign for a minimum noise level in vehicles. Engineers are using simulation and traditional testing to reduce noises that annoy passengers and design sounds that will please them or warn the world outside the car.

Key Topics Covered:

INTRODUCTION

Activities multiply
The NVH challenge

EMERGING SOUNDS

Ventilation
Other sounds
Vibration

NEW SOUNDS

Engine whine
Power electronics
Regenerative braking
Battery cooling

TRANSITION PROBLEMS

Start-Stop
Vibration
Range extender challenge

ARTIFICIAL SOUNDS

Adding sound to the interior to help drivers
Saving pedestrian lives with sound

For more information visit http://www.researchandmarkets.com/research/c1ff1b/noise_vibration_a