Carburetor preheating

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As a carburetor (Engl. Carburetor heat or carburetor anti-ice ) is called an auxiliary device in engines of piston aircraft, which the carburetor icing prevented.

functionality

To preheat the carburetor, a flap is opened so that it is preheated with air from the exhaust system. However, due to its lower density, the warm air also causes a drop in performance of approx. 50–250 RPM . However, carburetor icing cannot occur when the carburetor is preheated.

Functional test before the flight

The function of the carburetor preheating is checked before the flight by activating it and then observing the expected drop in power of the engine with the help of appropriate instruments such as the rev counter. If this drop in performance does not occur and the function of the instrument used is guaranteed, it must be assumed that the carburetor preheating is defective. Similarly, some aircraft models have a carburetor thermometer, on which the area of ​​the highest potential for carburetor icing is usually marked.

swell

  • Winfried Kassera: Compact powered flight; The basic knowledge of the private pilot license 3rd edition. Motorbuchverlag, 2010, ISBN 978-3-613-02758-9 , Motor, p. 70