| 摘要 |
<p>In a fuel vapour recovery system, fuel vapour is drawn off and converted to liquid fuel. The system comprises a compressor ( 34 ), individually closable inlets ( 30, 30 a , 30 b . . . ) for the fuel vapour and leading to an inlet duct ( 12 ) of the compressor ( 34 ), a return duct by way of which an outlet of the compressor ( 34 ) communicates with the inlet duct ( 12 ), and a control device ( 66 ) which controls communication between that outlet and the inlet duct ( 12 ) via the return duct in dependence upon the number of the inlets ( 30, 30 a , 30 b . . . ) which is open. The system further comprises a tank ( 52 ), a first sensor ( 82 ) which serves to detect when liquid water in the tank ( 52 ) attains a predetermined height in the tank, a second sensor ( 80 ) which serves to detect when liquid fuel in the tank ( 52 ) attains a higher, predetermined height in the tank, a first device ( 58 ) responsive to the first sensor ( 82 ) and serving to cause removal of at least part of the liquid water from the tank when the liquid water attains the first-mentioned predetermined height, and a second device ( 58 ) responsive to the second sensor ( 80 ) and serving to cause removal of at least part of the liquid fuel from the tank ( 52 ) when the liquid fuel attains the higher, predetermined height.</p> |
