A type in which a spring-closed or weight-closed air valve opens in response to engine demand. This valve, through suitable linkage, varies the fuel-orifice opening to secure the desired mixture ratio throughout the range of operation. SU and Stromberg CD carburetors operate on this principle, referred to also as constant-vacuum , constant-depression or variable-venturi.
AIR-VALVE CARBURETOR
Meaning of AIR-VALVE CARBURETOR in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012