| 摘要 |
<p>The negative terminal of an external power supply, for an electric motor at least partially disposed within a metal shell 12 in contact with the fuel, is connected to the brush 28 and via connector 50 to the metal shell so that during operation, a negative electrical potential is applied to the metal shell 12 to preferentially react with ions within the fuel. Thus the metal shell serves as a sacrificial anode to reduce the concentration of ionic species in the fuel, thereby decreasing reactions with the brush electrode and extending the useful life of the fuel pump. The fuel pump 10 is submersible within a fuel, and is particularly suited for use with high alcohol content fuels that tend to contain ionic species.</p> |
