Abstract: A method of controlling an air to fuel ratio of an internal combustion engine may include receiving a request for a modification of a first flow of fuel to at least one combustion chamber, modifying the first flow of fuel in response to the request, receiving a first signal indicative of a first air supply condition, displacing a second flow of fuel in response to receiving the signal and controlling the modification of the first flow of fuel by the displacement of the second flow of fuel.

Abstract: A method of controlling an air to fuel ratio of an internal combustion engine may include receiving a request for a modification of a first flow of fuel to at least one combustion chamber, modifying the first flow of fuel in response to the request, receiving a first signal indicative of a first air supply condition, displacing a second flow of fuel in response to receiving the signal and controlling the modification of the first flow of fuel by the displacement of the second flow of fuel.

Abstract: The invention relates to a device for handling an elongate flexible member such as a hose, comprising a reel device for paying in and retrieving the hose, a carrier means for the reel device, and mounting means whereby the reel device is mountable on and demountable from the carrier means, there also being separate roller members in the form of outrigger arms which include rollers and which are respectively adapted for paying out and retrieving the hose. There is a motor means such as a hydraulic motor whereby the reel is rotated via the carrier so that the hose is paid out or retrieved, the reel being mounted and demounted from the carrier by a single operation with the aid of lifting tackle such as a crane.