| 摘要 |
To save fuel during engine deceleration, it has been proposed that the supply of fuel should be cut off. Such proposals have involved substantial redesign of the carburettor. The carburettor described comprises a throttle valve (14), an idling port (26) through which a fuel air mixture is supplied on the downstream side of the valve (14) when the latter is in a closed position, a channel (16) leading to the idling port and along which the fuel/air mixture is drawn, a longitudinally adjustable idle mixture adjusting device (27) having a tapered tip (38) projecting into the channel (16) and manually movable to move the tip (38) towards and away from the port (26) to set the idling mixture of the engine, and means operable through the idle mixture adjusting device (27) for preventing the supply of fuel through the idling port during engine deceleration. The supply of fuel can be prevented by blocking the idling port (26) and or by venting the region adjacent that port (26). Such a device (27) is simple to install and does not require significant redesign of a carburettor. |
