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发明公开
CN106640464A 燃料喷射器、燃料喷射器组件以及相关方法 有权

燃料喷射器、燃料喷射器组件以及相关方法
摘要：
本发明提供了一种燃料喷射器(1)，其包括阀构件(11)、阀构件引导件(12)和弹簧室(40)。通过在阀构件引导件(12)的孔(23)内移动阀构件(11)而对将燃料从燃料喷射器出口(21)排出加以控制。弹簧室(40)包含偏置构件(50)，例如压缩弹簧，当处于封闭构造时偏置构件偏置阀构件(11)而使之与阀座(20)接触。提供了燃料供应通道(80)，其绕过弹簧室(40)，以引导燃料流至燃料喷射器(1)的出口室(22)；并且提供了清洁流体供应通道(90)，其用来将加压清洁流体供应至孔(23)的第二端(25)，以限制燃料沿着在阀构件(11)和阀构件引导件(12)之间延伸的间隙(29)从出口室(22)向孔(23)的第二端(25)而泄露。
摘要（英）：

The invention provides a fuel injector (1) which comprises a valve member (11), a valve member guide (12) and a spring chamber (40). Discharge of fuel out of a fuel injector outlet (21) is controlled by movement of the valve member (11) within a bore (23) of the valve member guide (12). The spring chamber (40) contains a biasing member (50), for example a compression spring, which biases the valve member (11) into contact with a valve seat (20) when in a closed configuration. A fuel supply passage (80) is provided, which by-passes the spring chamber (40), to direct a flow of the fuel to an outlet chamber (22) of the fuel injector (1) and a cleaning fluid supply passage (90) is provided to supply a pressurised cleaning fluid to a second end (25) of the bore (23) to restrict leakage of the fuel from the outlet chamber (22) towards the second end (25) of the bore (23) along a clearance (29) extending between the valve member (11) and the valve member guide (12).

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