| 摘要 |
<p>A diesel engine fuel filter comprises a casing enclosing a filter cartridge (31) separating an inlet (14) from an outlet (16), the casing also incorporating a three-way valve (12), which connects an excess fuel return path from the engine via inlet (9) with either of two outlets (10,11), and a pressure relief valve (29) connected between outlet (16) and inlet (9). Also claimed is a circuit wherein a feed pump connects a fuel tank with inlet (14), an injection pump connects outlet (16) with a row of injectors in the engine, a return path from the injectors leads to inlet (9), outlet (10) leads back to the fuel tank and outlet (11) leads back to the upstream side of the feed pump.</p> |
