Double carburetor
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The double carburetor is a type of carburetor with a pair of identical mixing chambers (also called venturi tubes or air funnels) and throttle valves .
Working method
The two mixing chambers supply a cylinder or a group of cylinders separately. This principle is based on the idea of combining two simple carburetors in a common housing; not all of the components of a carburetor are necessarily duplicated, so most double carburetors only have one central float chamber.
The throttle valves of a double carburetor must be operated synchronously, i. In other words , they are always equally wide open and are not opened one after the other like those of register carburetors .
Advantages and disadvantages
Thanks to the separate intake paths, double carburetors ensure that the cylinders are better filled with the fuel-air mixture. The pulsating flow in the suction paths cannot interfere with each other. This enables an increase in engine performance , which is also associated with an increase in fuel consumption .
See also
literature
- Gert Hack: make cars faster. 11th edition. Motorbuch-Verlag, Stuttgart 1980, ISBN 3-87943-374-7 .
- Hans Jörg Leyhausen: The master craftsman's examination in the automotive trade. Part 1: General principles, combustion engines, mixture formation, power transmission, chassis. 12th revised edition. Vogel Buchverlag, Würzburg 1991, ISBN 3-8023-0857-3 .
- Des Hammill: Practical manual Weber & Dell'Orto -Querstromvergaser , Hell-Verlag, ISBN 3-89365-922-6