摘要:
A method for operating an internal combustion engine in which fresh air, under ambient pressure, is compressed with the aid of a compressor, in particular an exhaust gas turbocharger, and supplied to a combustion chamber of the internal combustion engine via a throttle device, the rotational speed of the compressor being ascertained with the aid of a sensor, in particular a pressure sensor, the rotational speed of the compressor being used for determining the ambient pressure or a boost pressure applied downstream from the compressor and upstream from the throttle device.
摘要:
An arrangement for supplying liquid media to consumers of a fuel cell system having a feed pump is suggested which is less complex compared to known arrangements. This is achieved in that controllable metering valves (22) are provided between the feed pump (21) and the respective consumers.
摘要:
A dosing mechanism for fuels, particularly for the input into a chemical reformer to obtain hydrogen, has a metering-in device for metering fuel into a supply line, which opens out at at least one dosing aperture into a transporting line transporting a tempered material flow. A holding device for accommodating the metering-in device has an insulating body which thermally insulates the metering-in device from the transporting line that transports the tempered material flow.
摘要:
Atomizing nozzle for introducing a gas/liquid mixture into a chemical reformer to produce hydrogen, having at least one gas supply line (21) for a gas stream (20), at least one liquid supply line (25, 27) and at least one outlet (19) for the atomized gas/liquid mixture as well as a first chamber (24) into which the liquid supply line (25, 27) empties, with the chamber (24) having a chamber wall (16) that forms a lip (18) at the outlet end, on both sides of which a separate gas flow (20, 22) is supplied.
摘要:
The invention relates to a regulating device for an actuator arranged in a gas passageway of an internal combustion engine, in particular for a bypass flap arranged in an exhaust turbocharger, having an electrical servomotor, a regulating member coupled to the actuator and a multi-gear transmission arranged between the servomotor and regulating member. According to the invention, to achieve a large transmission ratio range with a small number of transmission gears, two transmission wheels interact in at least one of the transmission gears via an evoloid toothing.
摘要:
A transmission system for an adjusting device, of a waste gate of an exhaust gas turbocharger, including a four bar coupling mechanism, a driver arm operatively connected to a drive via a transmission, an output arm and a coupler, operatively connecting the driver and output arms, the transmission having a driving gear, assigned to the drive, and a driven gear, assigned to the driver arm and interacting with the driving gear having a rolling curve radius, which changes over the circumference, the driven gear having a rolling curve radius running complementary to the former. The rolling curve radii is selected in an angle of rotation range about the extended position of the coupling to form at least in regions a first transmission ratio and outside the angle of rotation range to is form at least a second transmission ratio larger than the first ratio. Also described is an exhaust gas turbocharger.
摘要:
A method for the deoxofluorination of a ketone for the production of a geminal difluoride compound in an industrial scale comprising the following steps: preparing an educt mixture comprising a ketone and a dialkylaminosulfur trifluoride, letting flow the educt mixture into a reaction chamber of defined length, diameter and volume, with a flow path having a width perpendicular to the direction of the flow in the range of 1-10 mm, at a temperature of at least 75° C. up to 120° C., preferably between 80 and 100° C., to perform the deoxofluorination reaction and obtaining a product mixture to quench the product mixture with a basic aqueous solution in a cooled reservoir vessel.
摘要:
The invention is directed to a method and an arrangement (10) for controlling an electrically operated charger (1), which essentially prevent a sudden drop in voltage with the run-up of the electric charger. A drive signal (AS) is formed, which drives the electric charger (1). The rate of change of speed for an increase of the rpm of the electric charger (1) is pregiven in dependence upon the instantaneous supply voltage (UV).
摘要:
An atomization system for fuels, particularly for charging a chemical reformer for obtaining hydrogen, features at least one metering device, accommodated in a supporting device, for metering fuel into a temperature-adjusted substance stream, which introduces the fuel directly into the temperature-adjusted substance stream without the interpolation of a supply line.
摘要:
A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the differential pressure valve has a regulatable throttling cross section, which is variable automatically, as a function of a flow pressure dictated by the control piston, in order to regulate the educt flow. The lead line leads to the control piston, and between the control piston and the differential pressure valve a first and a second connecting line are provided.