Abstract: A device for generating a reducing agent gas from a solid or liquid reducing agent, where the reducing agent gas is preferably suited for nitrogen oxide reduction in an exhaust gas of a combustion engine, the device including a reactor with an inner volume and an inlet for a reducing agent solution and an outlet for the reducing agent gas. The device further including a heating system disposed at least partially in the inner volume and a heating control unit for controlling the heating system, wherein the inner volume includes first and second heating zones each including at least one heating element and controlled independently of each other by the heating control unit.

Abstract: The invention relates to a fluid dispenser for the provision of a work fluid (2) wherein the fluid dispenser includes a feed cylinder (3) having a feed piston (4, 41) arranged therein which divides the feed cylinder (3) into a control space (5) and a feed space (6). A control fluid (8) can be supplied to the control space (5) via a control inlet (7) at a predeterminable control pressure (PS) such that the work fluid (2) provided to the feed space (6) via an inlet opening (9) is available at an outlet opening (10) at a predeterminable work pressure (PA). In accordance with the invention a pressure release means (11) is provided so that the work pressure (PA) of the work fluid (2) can be modulated in dependence on time at the outlet opening (10) in accordance with a predeterminable scheme (12). The invention further relates to a combustion engine having a fluid dispenser (1), as well as to a method for the provision of a work fluid (2) by means of a fluid dispenser (1).

Abstract: A fuel injection valve for an internal combustion engine which includes an axially moveable needle-like injection valve member 10 mounted in a tubular housing 2. A control element 22 with a control passage 25 is mounted in the upper end portion of the housing, and a valve element 21, 41, 46 is mounted for movement below the control element. A control chamber 20 is formed below the valve element, and a control piston 18 which is formed at the upper end of the valve member 10 bounds the lower side of the control chamber. A throttle passage 26, 42, 47 in the valve element is connected via a throttle constriction between the control passage 25 in the control element 22 and the control chamber 20. A throttle inlet 33, which is formed in the valve element 21 or in a sleeve 19 which laterally bounds the control chamber, is connected between a high pressure chamber 9 in the housing and the control chamber 20 without passage through an intermediate throttle point.

Abstract: The control space of the fuel injection valve is delimited, on the one hand, by the piston of the injection-valve member, on the other hand by the slide-valve body and circumferentially by the sleeve. Both the double-acting piston and the slide-valve body are guided in a narrow sliding fit on the sleeve. The throttle passage runs through the slide-valve body and is flow-connected permanently to the control passage in the control body. The throttle inlet leads from the high-pressure space into the control passage. The latter, on the side facing away from the slide-valve body, can, via a pilot valve, be connected to a low-pressure space and be separated again from the latter. The connection of the control passage to the low-pressure space leads to a pressure drop in the control space, with the result being that the injection-valve member moves in the direction of the slide-valve body and releases the injection nozzles.

Abstract: An injection valve member for closing or opening injection orifices of a valve seat element is integrated, in a longitudinally displaceable manner, into a central housing bore of a fuel-injection valve. The valve seat element is fixed to the housing and the part of the element that includes the injection orifices and the seat projects out of the housing. Elements for determining the rotational position of the valve seat element in relation to the housing are provided on the exterior of the part. The fuel injection valve requires simple production and assembly engineering and permits a slimline injector configuration for both large and small internal combustion engines.

Abstract: A fuel injection valve for an internal combustion engine which includes an axially moveable needle-like injection valve member 10 mounted in a tubular housing 2. A control element 22 with a control passage 25 is mounted in the upper end portion of the housing, and a valve element 21, 41, 46 is mounted for movement below the control element. A control chamber 20 is formed below the valve element, and a control piston 18 which is formed at the upper end of the valve member 10 bounds the lower side of the control chamber. A throttle passage 26, 42, 47 in the valve element is connected via a throttle constriction between the control passage 25 in the control element 22 and the control chamber 20. A throttle inlet 33, which is formed in the valve element 21 or in a sleeve 19 which laterally bounds the control chamber, is connected between a high pressure chamber 9 in the housing and the control chamber 20 without passage through an intermediate throttle point.

Abstract: The control space of the fuel injection valve is delimited, on the one hand, by the piston of the injection-valve member, on the other hand by the slide-valve body and circumferentially by the sleeve. Both the double-acting piston and the slide-valve body are guided in a narrow sliding fit on the sleeve. The throttle passage runs through the slide-valve body and is flow-connected permanently to the control passage in the control body. The throttle inlet leads from the high-pressure space into the control passage. The latter, on the side facing away from the slide-valve body, can, via a pilot valve, be connected to a low-pressure space and be separated again from the latter. The connection of the control passage to the low-pressure space leads to a pressure drop in the control space, with the result being that the injection-valve member moves in the direction of the slide-valve body and releases the injection nozzles.