Patent
Fuel injection device
TLDR
In this article, a fuel injection device consisting of an injection valve (9), a line (5), which supplies fuel under high pressure to the injection valve during operation, a control valve (41), which controls the pressure in a control chamber (43) of the injector, this control chamber being connected to said line, and the moving valve part of the control valve can be actuated by an actuator (31) via a hydraulic coupler (38), which has two plungers (39, 20, 40).Abstract:
The invention relates to a fuel injection device (1) comprising an injection valve (9), a line (5), which supplies fuel under high pressure to the injection valve (9) during operation, a control valve (41), which controls the pressure in a control chamber (43) of the injection valve, this control chamber being connected to said line (5), and the moving valve part (51) of the control valve can be actuated by an actuator (31) via a hydraulic coupler (38), which has two plungers (39, 40) that interact with a coupler volume of the coupler. The injection valve also comprises means for filling the coupler volume with pressurized fuel via guide gaps (65, 67) of the plungers (39, 40), whereby the plungers (39, 40) are placed inside one another while being parallel to one another. A translator space (72) is placed at the ends of the plungers (39, 20, 40), said ends facing the actuator (31). A filling space (71-2) is provided inside the outer plunger (39) and is connected to said line (5). One of the plungers (39) is mechanically coupled to the actuator (31) via a rod (61), and the other plunger (40) actuates the control valve (41) via a rod (63), whereby the direction of the closing movement of the moving valve part (51) matches the direction of fuel flowing out of the control chamber (43) so that the control valve is subjected, at least in part, to an equilibrium of forces due to the force acting upon the other plunger (40) inside the translator space (72).read more
Citations
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Patent
Fuel-injection valve
TL;DR: In this paper, the authors proposed a non-positive fit of an actuator to a valve body by means of a nonpositive fit, which corresponded to the thermal expansion of the actuator and transmission elements reaching as far as the valve seal seat.
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Fuel Injection Valve
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References
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Patent
Kraftstoffeinspritzventil für Brennkraftmaschinen
Thomas Kuegler,Hasiman Üsküdar +1 more
TL;DR: In this paper, a Ventilhohlnadel (15) is angeordnet, die eine ausere Ventildichtflache (30) aufweist, with der sie mit dem auseren Ventilsitz (107) zusammenwirkt, and so die Offnung der wenigstens einen ausesren Einspritzoffnung (10) steuert.
Patent
Fuel injection system for internal combustion engines
TL;DR: In this article, a fuel injection system for an internal combustion engine and a method of controlling fuel injection according to which a predetermined fuel quantity is delivered from a high-pressure pump to the internal combustion engines, first and second return flow quantity are returned through first-and second-relief ducts, the second relief duct including a control throttle having a constant cross-section, and an electronic control unit controls flow delivery in accordance with characteristic values.
Patent
Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
TL;DR: In this article, a common rail fuel injector utilizes a piezoelectric actuator (8) to open and close the injector valve (3), and a poppet valve (1) to hydraulically control the injection valve.
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Pressure storage fuel injection system
TL;DR: In this paper, a pressure storage (common rail) fuel injection system for an engine is provided, in which the fuel injection pressure rise response when quickly accelerating the engine is improved, engine output shortage is prevented, engine noise is reduced, and improvement is made with respect to soot generation and exhaust gas particulation.
Patent
Ventil zum steuern von flüssigkeiten
TL;DR: In this article, the bestandteil eines Kraftstoffeinspritzventils is vorgesehen, in which a Hydraulikammer is ausgebildet, wenigstens eine hydraulikleitung (23) with einer gegenuber dem piezoelektrischen Aktor (3) abgedichteten Bohrung (5) des Ventilglieds (2) verbunden ist, wobei die Hydraulikkammer al