Fuel injection valve for high-pressure fuel injection
An improved fuel injection valve for a high-pressure injection of fuel from a central high-pressure line into combustion chambers of an internal combustion engine, which has an injection valve with a valve seat, a valve ball, and a guide piece that guides the valve ball. The guide piece presses the...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | An improved fuel injection valve for a high-pressure injection of fuel from a central high-pressure line into combustion chambers of an internal combustion engine, which has an injection valve with a valve seat, a valve ball, and a guide piece that guides the valve ball. The guide piece presses the valve ball against the valve seat in order to close the injection control valve and during the opening, subjects the valve ball to an initial stress of a spring. During the opening, the valve ball is lifted up from the valve seat by means of a high-pressure jet which is supplied via an outlet throttle bore by a control chamber that is operatively connected with a central high-pressure line. A diffuser is disposed between the valve seat and the outlet throttle bore, and the outlet throttle bore, the diffuser, and the valve seat have the approximate shape of a steep-walled funnel with a right-angled to acute-angled cone angle. |
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