FUEL INJECTOR WITH COMBINED CALIBRATION TUBE, FUEL FILTER, AND PRESSURE PULSATION DAMPING ORIFICE

To provide a fuel injector with a combined calibration tube, a fuel filter, and a pressure pulsation damping orifice.SOLUTION: A fuel injector (10) with an inlet end (16) and a discharge end (18) includes a fuel tube (12) through which fuel is admitted to a fuel passage (15) extending to the dischar...

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1. Verfasser: ROBERT B PERRY
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a fuel injector with a combined calibration tube, a fuel filter, and a pressure pulsation damping orifice.SOLUTION: A fuel injector (10) with an inlet end (16) and a discharge end (18) includes a fuel tube (12) through which fuel is admitted to a fuel passage (15) extending to the discharge end (18). A calibration tube includes first and second ends, the second end engaging a spring (56). A fuel filter filters all fuel passing to the discharge end (18), and provides restriction of a first magnitude. The calibration tube includes a pressure pulsation damping orifice fluidly communicably between the fuel filter and the discharge end (18), and the pressure pulsation damping orifice provides restriction of a second magnitude which is greater than the first magnitude.SELECTED DRAWING: Figure 1 【課題】組み合わされた較正チューブ、燃料フィルタおよび圧力脈動減衰オリフィスを有する燃料噴射器を提供すること。【解決手段】入口端(16)および排出端(18)を有する燃料噴射器(10)が、燃料チューブ(12)を備え、この燃料チューブ(12)を通じて、燃料が排出端(18)に延びる燃料通路(15)に入ることを許可される。較正チューブが、第1の端部および第2の端部を含み、第2の端部は、ばね(56)に係合する。燃料フィルタは、通過して排出端(18)に進む全ての燃料をフィルタリングし、第1の大きさの制約を与える。較正チューブは、燃料フィルタと排出端(18)との間で流体連通可能に圧力脈動減衰オリフィスを含み、圧力脈動減衰オリフィスは、第1の大きさよりも大きい第2の大きさの制約を与える。【選択図】図1