Imprint Contact 868 Videos
900.000 Callings


Wheel change
Save Energy

Video Carburettor
Video Single carburettor 1
Video Single carburettor 2
Video Ecotronic Carburettor
Video Const. Depr. Carbur.
Video Motorc. Carburettor 1
Video Motorc. Carburettor 2
Video 2-barrel Carburettor
Video Diaphragm Pump
Video Intake Pipe
Video Automatic Choke
Video Acceleration
Video Cold Idle Speed
Video Cold Start
Video Part Load
Video Transition
Video Full Load
Video Warm Idle Speed
Video Mikuni carburettors
Video 14 Tasks Carburettor

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Constant Depression Carburetor


Carburettors with a static choke funnel and variable pressure need, for almost every operational area, their own system, whereas constant depression carburettors with a variable choke funnel diameter can carry out almost all duties, without additional facilities.


As in the motorcycle carburetor, the choke funnel opening is held variable by a crosswise-sliding piston and a needle-jet. The possibly emerging lower inlet manifold pressure is conducted to the rear. The atmospheric pressure pushes the piston upwards, against the spring-tension, and increases the opening of the choke funnel through the inlet manifold pressure. Any oscillations that arise, are absorbed by the damper oil (green). An amount of fuel, proportional to the amount of air, flows through the needle-jet. 07/09               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

Our E-Book advertising