Abstract: A fuel pump arrangement for a fuel injection system is described. The fuel pump arrangement comprises one or more cam-driven pump units, and the or each pump unit comprises a pumping chamber and a pumping element for pressurising fuel in the pumping chamber. The or each pumping element is driven by a respective cam of the fuel pump arrangement to undergo at least one pumping stroke per revolution of the cam. The fuel pump arrangement is configured such that the fuel volume displaced in a first pumping stroke is greater than the fuel volume displaced in a second pumping stroke. In this way, the efficiency of operation of the fuel pump arrangement can be improved.

Abstract: A disposal unit for sanitary towels comprises a housing (100) which supports a bag (1) for receiving the used towels. A door (4) is mounted to the housing, in use the door being opened for access to the bag. The unit includes a heat sealing device (8) operable when the door is in the closed position to seal hermetically the mouth of the bag. The door may be pivotally mounted at its lower edge to the housing in which case the means for supporting the bag are arranged to support the bag with the mouth of the bag located towards the top of the door. A control circuit may activate the heat sealing device for a predetermined period of time and also activate a solenoid which locks the door closed.