| 摘要 |
<p>A top-feed electrically controlled fuel injector (10) includes a filter cartridge (34) inserted in a fuel inlet tube (14) for filtering particulate material larger than a certain size from the fuel that passes into the interior of the fuel injector. The filter cartridge is fit on an axially outer end of an adjusting tube (30, 30') which is telescopically engaged with the inlet tube and axially fixed thereto after adjustment. The filter cartridge is preferably generally tubular in shape, having an imperforate axially outer end, an inner end fitted onto the adjusting tube, and frame sidewalls (46) supporting a fine mesh screen (38), such that an annular space through which fuel is constrained to flow is formed between the filter cartridge and the inlet tube, with a well (52) at a closed axially inner end of the annular space for collecting particulate material which has been filtered out of the fuel.</p> |
