Patent ID: 7866333
Filing Date: 2011-01-11
Classification: F01N,Y02T,Y10T

Abstract:
1. A fluid transfer system for transferring fluid from a reservoir ( 2 ) to a receiving device, the fluid transfer system comprising: a through flow device ( a controllable shut-off valve ( a controlling unit controlling at least the state of the shut-off valve ( wherein the controlling unit is adapted to control the state of the shut-off valve so that the delivered amount corresponds to a demand in such a way that the controlling comprises operating the shut-off valve in PWM-mode (pulse width modulation-mode), and wherein the controlling unit is adapted to determine the accumulated demand for a given interval, accumulate the delivery during at least part time of the interval by the measuring unit and adapt the width(s) of one or more pulses in said interval so that the accumulated delivery in said intervals equals the accumulated demand.