| 摘要 |
<p>A standard jerk type fuel injector (10) can be converted to an accumulator type fuel injector (110) by modifying internal flow configurations of the injector. The conversion can advantageously be performed by replacing a first spacer (14) having a first set o f flow configurations with a second spacer (114) having a second set of flow configurations including a non-return element (174, 274). The resulting injector has (1) an accumulator volume located fluidically downstream of the non-return element and (2) a control cavity above the nozzle needle. The accumulator type injector can be retrofitted into an existing injection system on site or assembled as a new construction by using primarily stock jerk type injector components. Manufacturing expenses can thus be sharply reduced, thereby promoting retrofitting, low volume production, and/or standardization.</p> |
