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"What makes Eberspächer? I would say a great deal of optimism and innovation."
Melanie Cullmann, BA Student (Business Administration in Industry)

Research and development engineers at Eberspächer already live in the future. The issues that will be hot topics for the automotive industry or private customers in a year`s time are already being discussed as a product or a system solution today by our some 400 experts. In order to be able to design the automobile technology of the future, we invest approximately six percent of our net turnover annually in the area of research and development.

One good example of the art of our engineers: the reduction of noise emissions
As early as the 1970s, scientists and technicians were endeavoring to reduce significantly the noise emissions of automobile exhaust systems. We here at Eberspächer tackled this topic with real determination in the year 2000. In doing so, of course, we were considering a vision for the future: in addition to reducing noise levels considerably, we were also seeking to enhance the performance of the engine and to develop a permanently resilient design. And all of that at precisely calculated manufacturing costs.

We were aware that we would have to bring together the results from the top level research being conducted in the most varied of specialist areas in order to permanently reduce noise emissions: solutions derived from exhaust technology and the electronics of digital signal processors are a part of this as are the results from acoustic and sound transducer technology, the use of mathematical algorithms to calculate the antisound signal and finally the use of bus architecture software technology.

The breakthrough: Active silence technology
This complex approach was actually the key to our success. In 2004 we succeeded in making our breakthrough – Eberspächer presented its first vehicle with active exhaust gas muffler. This active silence technology reduces the sound emissions through the integration of an actuator in the exhaust system. Thanks to the lower counterpressure, the engine performance also developed better.

And that was not all - we succeeded not only in reducing the sound emissions we were also able to model them. As a result we were then able to design the sound of the vehicle to the individual wishes of the driver.

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