Fuel-air ratio control for carburettor engine - has fine flow control in fuel line to carburettor, may use driver controlled engine vacuum

摘要

The arrangement is intended for controlling the fuel/air ratio of a combustion engine with carburettor. It comprises a flow control arranged in the fuel supply line from the fuel tank to the carburettor. The control may be operable from the driver position in a motor vehicle. It may be operated via the engine intake vacuum which itself may be subject to driver control. The control system may comprise a bellows which is connected to the intake vacuum and varies the passage of the flexible supply line. It may be arranged to operate above a given engine temperature only.