Automakers like to tout the quiet ride of their luxury cars.
When it comes to two new updates introduced at the North American International Auto Show, being held Jan. 10-23 in Detroit, that sound quality was noted in a mixture of parts using plastics.
Detroit-based General Motors Co. noted nine different technologies used to improve the sound on its Buick Verano more than half of them featuring plastics.
Those include side windows enhanced with an inner layer of polyvinyl butyral to help control sound, doors with a fiberglass seal, nylon baffles with a foam inner core placed in hollow parts of the metal structure to keep sound from traveling through the body, an acoustic layer in the headliner and expanded foam placed strategically throughout the car.
We're tuning the sound to do three things block the sound, absorb it and reduce it, said Jim Federico, chief engineer.
None of the technologies are new, but used together they are part of creating a sound canceling package that enhances the car, GM said.
At Auburn Hills, Mich.-based Chrysler Group, the updated 300 C sedan represents the company's re-emergence since bankruptcy, said Chrysler Brand President and CEO Olivier Francois.
The car was a big hit for the old Chrysler, and the company knew it had to get things right when it brought the new 300 to market for 2011.
To say this is a big deal for us is an understatement, added chief designer Ralph Gilles.
Chrysler enhanced the sound quality of the 300 in part with two composite underbody panels that it says provide 8 feet of acoustic performance by blocking road noise. Like Buick's Verano, the 300 has a PVB layer on its side windows and foam insulation within key body cavities.