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ZF’s Commercial Vehicle Solutions (CVS) division unveils its latest electrification technology, a new and advanced air compressor for commercial vehicles. Designed as much for efficiency as it is for smooth operation, the e-comp Scroll is an oil-free, low-noise and minimal vibration air compression system for medium and heavy-duty hybrid, battery electric and fuel cell trucks, buses and coaches. The new product has its public premiere at the Advanced Clean Transportation (ACT) Expo in California, USA, and at the Auto Shanghai in China.
Compressed air continues to be a fundamental requirement in commercial vehicles as the industry transitions towards electrification, supporting core and safety critical systems such as air disc brakes and suspension as well as other auxiliary functions. In commercial vehicles with electric drives, the air compressor required for these functions is usually driven by its own electric motor, unlike conventional vehicles in which the compressor is powered by the combustion engine.
With electric vehicles operating more quietly than traditional ICE powered vehicles, the noise generated by the conventional piston compressor becomes more noticeable, negatively impacting the comfort of those inside and outside the vehicle. The e-comp Scroll solves this by using the motion of interlocking scrolls to compress air. This minimizes vibration while limiting noise emissions to around 67dB(A) at the nominal operation point of 250 litres per minute, comparable to the noise level in an office environment.
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