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30 August 2010

Bernhard Misses First Place by Only a Second:

It’s been a long wait, but Porsche factory driver ... >>

24 August 2010

Capirossi and Bautista Visit Akrapovic:

After their demanding racing weekend in Brno, both... >>

12 August 2010

A Spectacle with Akrapovic:

Close racing, a number of spectacular overtakings,... >>

Internal combustion

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fold faq

Why do internal combustion engines, either 4-stroke or 2-stroke, even need exhaust systems?

Internal combustion engines need exhaust systems mainly for the following reasons:

  • to improve power and torque delivery characteristics,
  • to lead hot combusted exhaust gases away,
  • to muffle the sound, i.e. reduce noise emissions (where the intended use of the engine has to be taken into consideration).