Barcarole Limited

John Mason

Roger A Bowles

Patrick O'Shea

Alan Harding

Pierce Boland

The present invention is concerned with an electronic fuel control system including a carburettor having a throttle bore, a fuel chamber, and at least one fuel circuit extending between the fuel chamber and the throttle bore and controlled by an adjustment member such as a needle, the control system further including an actuator operable to automatically adjust the adjustment member in response to one or more engine operating parameters.

Electronic fuel control system

A carburetor for feeding separate lean and rich channels of an engine intake duct includes a body having a mixing passage with an air intake side and an engine outlet side. A throttle shutter is rotatable about an axis transverse the mixing passage, and a partition is located within the mixing passage upstream of the throttle shutter. The downstream edge of the partition is adjacent the throttle shutter axis whereby in use of the carburetor the partition defines an extension of the lean and rich channels upstream of the throttle shutter, the partition thus providing substantial isolation between the lean and rich channels for all rotational positions of the throttle shutter. In a preferred embodiment a choke shutter is located upstream of the throttle shutter and is rotatable about a further axis transverse the mixing passage, the upstream edge of the partition being adjacent to the axis of the choke shutter.

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Tralee, Ireland

John Mason