Abstract: A method to determine at least one filter operating parameter. At least one transponder arranged on or in a filter cartridge of the filter is contactlessly queried by a reading device. A transponder response is analyzed to evaluate the operating parameter. The transponder is subject to influences acting on the filter cartridge. As a result of the influences that the transponder is sensitive to, or sensitivity on transparency or damping properties of a transmission path of electronic signals between the transponder and the reading device, a transponder response behavior is changed to a degree detectable by the reading device or a downstream analysis unit which enables a statement to be made about the operating parameter. A device for determining at least one operating parameter of a filter or a filter cartridge arranged on or in the filter, and a filter cartridge are both provided.

Abstract: A method and a device for monitoring the functioning of a crankcase ventilation system of an internal combustion engine, crankcase ventilation gas being supplied to an intake line of the internal combustion engine via at least one crankcase ventilation line from the crankcase via an oil separator and a crankcase pressure regulating valve. An immediate surrounding environment of the internal combustion engine is monitored by at least one sensor that is sensitive to crankcase ventilation gas or to at least one crankcase ventilation gas component for the occurrence of crankcase ventilation gas, and that, if a presence of crankcase ventilation gas is determined, an informative or warning message is produced.

Abstract: The invention relates to an electrostatic separator (1) for separating particles containing oil out of a gas stream, having an emission electrode (2) and a deposition electrode (3), wherein the emission electrode (2) has a front corona region (4) extending into the gas stream and a rear deposition region (5). An outlet opening (9) for separated oil running along the deposition electrode (3) is provided at the level of, or behind, the deposition region (5) of the emission electrode (2).

Abstract: The invention relates to an electrostatic separator (1) for separating particles containing oil out of a gas stream, having an emission electrode (2) and a deposition electrode (3), wherein the emission electrode (2) has a front corona region (4) extending into the gas stream and a rear deposition region (5). An outlet opening (9) for separated oil running along the deposition electrode (3) is provided at the level of, or behind, the deposition region (5) of the emission electrode (2).

Abstract: Electric oil separator that separates oil from an airflow of a ventilator. The separator includes an emission electrode and a collecting electrode. Moreover, the separator includes an injection device structured and arranged to inject oil as a cleaning fluid onto at least one of the emission electrode and the collecting electrode, so as to inject oil obliquely to a longitudinal axis of the collecting electrode.

Abstract: The invention relates to a device (1), for the ventilation of the crankcase (20) of an internal combustion engine (2), with a breather tube (3), running from the crankcase (20) to an inlet manifold (22) on the internal combustion engine (2), in the course of which an oil-mist separator (30) is arranged. The novel device is characterized in that in the course of the breather line (3), a pump device is arranged, by means of which a reduced pressure may be generated in the crankcase (20) relative to ambient pressure.

Abstract: An electric oil separator that separates oil from an airflow of a ventilator. The separator includes an emission electrode and a collecting electrode. Moreover, the separator includes an injection device structured and arranged to inject oil as a cleaning fluid onto at least one of the emission electrode and the collecting electrode. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: The invention relates to a device (1), for the ventilation of the crankcase (20) of an internal combustion engine (2), with a breather tube (3), running from the crankcase (20) to an inlet manifold (22) on the internal combustion engine (2), in the course of which an oil-mist separator (30) is arranged. The novel device is characterised in that in the course of the breather line (3), a pump device is arranged, by means of which a reduced pressure may be generated in the crankcase (20) relative to ambient pressure.

Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.

Abstract: The invention relates to an electric contact array having two contacts between which an electrically conductive connection exists, wherein the contact array is watertight and dust-tight, wherein the contacts are disposed in a sealed area. According to the invention, two sealing elements are disposed at a distance from one another in order to seal the sealed area. A test area is provided between the sealing elements, said test area having a hole that enables access from the outside.

Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.

Abstract: The invention relates to a process for operating an electric filter for gaseous fluids containing impurities, especially in a crankcase ventilator for internal combustion engine, in which the electric filter is fitted in the ventilation aperture as an oil separator and the high-voltage generator and hence the power supplied thereby can be controlled or regulated depending on the residual impurity content attained or to be attained.