| 摘要 |
A fuel system for an internal combustion engine 6, eg of a racing vehicle, includes a main fuel tank 8, a reserve fuel tank 10, a fuel control valve 16 that is switchable to select whether the fuel is drawn from the main tank or the reserve tank, and an input device 20 for controlling operation of the valve. The main tank 8 contains a first fuel and the reserve tank 10 contains a second fuel that has a different energy density from the first fuel. In motor racing, the reserve tank may be filled with fuel of lower energy density than that of the main tank, eg by adding ethanol or methanol to gasoline. The input device 20 may be a driver-operated switch or remotely controlled, eg by a racing team technician or race official. A vehicle that uses its fixed allocation of main fuel for the race is thus disadvantaged by reduced peak power, speed and acceleration. The use of reserve fuel may be indicated, eg by a light visible to competitors, spectators and officials and penalty points may be applied. |
