Filed under: Technology, BMW, Diesel
When considering how go about improving fuel efficiency and reducing emissions, we typically think smaller engines, alternative fuels and electrification. One area that doesn’t typically come mind is that sound design and acoustics. While noises produced a vehicle don’t directly affect fuel efficiency, soundtracks are important because they are often a prime determinant whether a given powertrain solution is acceptable drivers and passengers.
Companies like BMW, General Motors, Honda others have been actively pursuing mechanisms of controlling noise at the source in order to create more flexibility for modifying the powertrains. A key example is the 2010 Chevrolet Equinox its 2.4-liter inline four-cylinder gasoline engine. GM added active noise cancellation so it could allow engine spend more time running at lower speeds where engine tends make more a low booming sound. Without noise cancellation technology, engine’s sountrack would turn off drivers.
Similarly, BMW has been carefully studying structures of engine blocks and engine bays. Careful application of ribs and tuning of structural shapes have allowed these structures made lighter without risk of excessive vibration. Similarly, adding insulation materials closer engine also reduces amount needed overall as well as facilitating use of other types of engines that might inherently noisier.
All these factors play into making more efficient vehicles that are appealing customers. After all, consumers don’t want buy vehicle for reasons that have nothing do function, all efficiency advantages they might offer will left stuck ‘park.’
Gallery: BMW Acoustic development
[Source: BMW]
Continue reading BMW experimenting with electronic noise canceling tech diesels
BMW experimenting electronic noise canceling tech diesels originally appeared Autoblog Mon, 31 May 2010 09:03:00 EST. Please see our terms for use feeds.
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