Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.

Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.

Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.

Abstract: The invention relates to a centrifuge for the cleaning of a liquid, in particular a lubricant oil of an internal combustion engine. Said centrifuge comprises a housing, at least one bearing element on the housing side and a rotor which is rotatably mounted thereon. The rotor is composed of at least two parts, an inner part for accommodating the bearing and a part for retaining impurities in an impurity collection zone, wherein said part may be detached from the inner part for maintenance of the centrifuge. The centrifuge is characterized in that the/each bearing element is an element composed of a first bearing material and comprises one or more first smooth bearing surfaces. The inner part, embodied as a single piece, is made of a second bearing material and provided with one or more second smooth bearing surfaces. First and second bearing surfaces cooperate directly among each other, and the first and second bearing materials form a pair of smooth bearing materials.

Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.

Abstract: The invention relates to a device for separating impurities from the lubricating oil of an internal combustion engine. The device comprises a filter insert on the bottom and a centrifuge thereabove that is provided with a rotor which is driven by means of penetrating lubricating oil. The filter insert and the centrifuge are disposed on top of each other in a common two piece housing that is closed during operation of the device and encompasses a removable top screw cap and a fixed bottom housing part. A removable intermediate lid is positioned between the filter insert and the centrifuge within the housing. The centrifuge, the intermediate lid, and the filter insert can be removed from the housing in the open state thereof. Furthermore, the screw cap and the intermediate lid of the device are provided with detachable connecting members which engage with each other and transmit axial tractive forces or axial tractive and compressive forces.

Abstract: The invention relates to a fuel filter comprising a housing, an interchangeable filter cartridge that is located in the housing, a water collection chamber and a water level sensor. Said water level sensor has two electric conductors, which can be electrically interconnected by means of water if there is a correspondingly high water level. The filter is provided with a switching element that can move between a contact position and an interruption position, said switching element making contact with the two conductors in the contact position and the contact between the switching element and at least one of the two conductors is interrupted when the switching element is in the interruption position. The electric resistance that occurs between the two conductors has a first value, when the switching element is in the first contact position and a second value that differs from the first, if the switching element is in the interruption position.

Abstract: A free-jet centrifuge for the cleaning of lubricating oil comprising, a housing with a removable cover, a rotor rotatably arranged in the housing and with channels for feeding and removing the lubricating oil. The rotor is of split design with a drive part and a dirt trapping part which can each be flowed through by their own partial lubricating oil flow and which are designed with a torque transmission device which is engageable and disengageable. The dirt trapping part is separable from the drive part. A device is provided to prevent or restrict the axial mobility of the dirt trapping part relative to the drive part, which is ineffective or detachable when the cover is removed. The drive part extends from the bottom towards the top into the dirt trapping part or entirely through it. The drive part comprises all parts serving for the rotatable bearing of the rotor and the drive part is securely positioned against axial removal with an opened cover.

Abstract: The invention relates to a fluid filter including a filter socket with a mounting flange that can, in a sealing manner, be connected to a companion flange on an associated apparatus, wherein at least one fluid duct for supplying fluid to be filtered and one fluid duct for discharging filtered fluid extends through the flange connection, wherein, in the filter socket, at least one section of at least one fluid duct can be closed off against the companion flange by means of a sealing plate designed with at least one through opening that is sealed against the companion flange and is arranged flush with an apparatus-side fluid duct. Therein, it is provided that the surface area of the sealing plate, as seen on the plane of the flange connection, is smaller than the surface area of the mounting flange and that the sealing plate is inserted in the filter socket in a sealing manner and forms a part of the filter socket.

Abstract: The invention relates to a fluid filter (1) comprising a collecting chamber (10) for a liquid which is separated from the fluid, in addition to a filter insert (4) which comprises a filter medium which is permeable to the fluid. The collecting chamber is arranged below the filter medium (5), and a liquid sensor (19) is arranged above the deepest point of the collecting chamber (10) and the liquid sensor (19) is protected from the liquid, at least sectionally, by means of a protective wall (18, 20). Said protective wall (18, 20) extends laterally and/or below the liquid sensor (19) and a liquid permeable connection is provided from the collecting chamber (10) to the fluid sensor (19).

Abstract: Disclosed is a liquid filter for an internal combustion engine. The filter has a housing, a removable cover for closing the housing, and a replaceable filter insert that has a filter surface through which liquid can flow. The filter surface defines a boundary between a flow channel on the filtered side and a flow channel on the unfiltered side of the filter. A non-return valve allows the liquid to flow through the filter at pressure conditions that prevail when the engine is running. When the engine is shut off, the non-return valve prevents flow of liquid through the filter, thereby holding within the filter housing the liquid that was in the filter when the engine was shut off. The non-return valve is placed in the flow channel on the filtered side.

Abstract: A device for eliminating oil particles from the crankcase ventilation gas of an internal combustion engine. The device is located in the flow duct of the gas that runs from the crankcase to an induction tract of the engine. The device includes an oil separator in the form of an outlet for the gas with a deflection of the flow, causing the oil particles to be deposited on a baffle surface and thus to be eliminated from the crankcase ventilation gas flow. The device has an infeed cross-section, which lies upstream of the baffle surface when viewed from the flow direction of the crankcase ventilation gas, and which is sub-divided into several infeed sub-sections. The baffle surface is a solid surface that is devoid of perforations. The baffle surface is configured on a valve body, which lies downstream of the infeed sub-sections when viewed in the flow direction of the gas, and which is pre-tensioned by a force.

Abstract: The invention relates to a rotor for a centrifuge for cleaning a liquid, in particular the lubricating oil of an internal combustion engine, wherein the rotor is designed in two parts, namely, on the one hand, a drive part and, on the other hand, a dirt-collecting part comprising a dirt collection area, wherein the dirt-collecting part can be connected to the drive part to the rotor, and wherein the dirt-collecting part can be detached, for disposal or cleaning, by being pulled off axially from the drive part.

Abstract: A process for measuring and controlling the circulation of fluids in endoscope channels that includes placing at least one endoscope into a tank. Further, one or more inlet channels of the endoscope are coupled to one or more valves with connectors, saturating the tank and inlet channels with a fluid from at least one fluid supply in fluid communication with at least one circulation pump. Further still, at least one hermetic chamber having a known volume and the one or more valves, such that the hermetic chamber and valves are completely filled with the fluid. Controlling the fluid flow within the hermetic chamber with at least one controller, wherein the controller controls and records the emptying with one or more sensors detecting a high level and a low level of the fluid, and verifies the known fluid volume and flow rate from the recorded emptying of the hermetic chamber.

Abstract: Devices for separating impurities from the lubricating oil of an internal combustion engine, the devices at least having a filter element and a housing provided with a screw cap. The screw cap and the filter element include a detachable connection arrangement which can be brought into contact and are used to transmit axial tractive forces. A first device is characterized in that the connection arrangement can be brought into contact by rotating the screw cap in the loosening rotational direction thereof and can be disengaged by rotating the screw cap in the tightening rotational direction thereof. A second device also includes a centrifuge located in the same housing, a first connection apparatus, corresponding to the above-mentioned connection apparatus being provided between an intermediate cap and the filter element, and a second connection apparatus being provided between the screw cap and the intermediate cap.

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 oil separator for the separation of oil from the crankcase ventilation gas of an internal combustion engine, comprising a housing wherein a separating element is arranged, comprising an inlet for gas to be cleaned, an outlet for cleaned gas and an outlet for separated oil. The novel oil separator is characterized by a crude gas area of the housing adjacent to the inlet and provided with an oil sink wherein coarse oil carried by the incoming gas flow is deposited; also characterized in that the oil separator comprises, in addition to the separating element, a coarse oil cyclone whose inflow opening is located at the same level as the oil sink therein, and in that the separating element has an inflow opening which is spatially located above the inflow opening of the coarse oil cyclone.

Abstract: Coolant conditioning unit for coolant of an internal combustion engine. The unit includes a cup-shaped housing, a removable cover for closing the housing, a replaceable filter insert arranged in the housing and being detachably connected to the cover, an inlet, an anti-drain valve that is normally open during filtering, and a stop valve arranged in the inlet. The stop valve is held in an open position by the filter insert and closes when the filter insert is removed from the housing and closes before the cover has been completely separated from the housing. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: The invention relates to a rotor for a centrifuge, in particular for purifying lubricating oil in an internal combustion engine, wherein said rotor is rotatably mounted in the centrifuge housing and is provided with an impurity trapping element, the rotor or the impurity trapping element thereof are made of a plastic material and remote deflecting baffles arranged in said impurity trapping element can be removed from the centrifuge housing.

Abstract: The invention relates to a rotor for a centrifuge, in particular for purifying lubricating oil in an internal combustion engine, wherein said rotor is rotatably mounted in the centrifuge housing and is provided with an impurity trapping element, the rotor or the impurity trapping element thereof are made of a plastic material and remote deflecting baffles arranged in said impurity trapping element can be removed from the centrifuge housing.