Abstract: A method for producing high-purity silicon carbide powder includes filling starch-based packing chips or expanded starch as organic raw material into a container open at the top; introducing the container filled with the raw material into a furnace and heating the packing chips, or the expanded starch, gradually to a temperature of 2,000° C. whilst feeding inert gas or under vacuum to graphitize the packing chips or the expanded starch into porous graphite pieces; feeding halogen gas, such as chlorine or fluorine, into the furnace to purify the porous graphite pieces at a temperature of >1,800° C. to remove foreign metals from the porous graphite pieces by forming metal chloride, and converting the porous graphite pieces into powdered silicon carbide by feeding SiO with argon as carrier gas at a temperature of >1,200° C. at a pressure of 30 mbar or higher.

Abstract: A gerotor device for a pump apparatus is disclosed. The gerotor device includes at least two gerotor stages that respectively include an inner rotor rotating during operation about an inner axis with teeth projecting radially outside, and an outer rotor rotating during operation about an outer axis radially offset relative to the inner axis with radially inner open tooth gaps, in which the teeth of the inner rotor engage. A rotor body rotating during operation about a rotor axis includes radially open tooth gaps of a first gerotor stage of the at least two gerotor stages and teeth projecting radially outside of a second gerotor stage of the at least two gerotor stages. The tooth gaps of the at least two gerotor stages are fluidically sealed at least one of against one another and relative to a surrounding area.

Abstract: A gerotor device for a pump apparatus is disclosed. The gerotor device includes at least two gerotor stages that respectively include an inner rotor rotating during operation about an inner axis with teeth projecting radially outside, and an outer rotor rotating during operation about an outer axis radially offset relative to the inner axis with radially inner open tooth gaps, in which the teeth of the inner rotor engage. A rotor body rotating during operation about a rotor axis includes radially open tooth gaps of a first gerotor stage of the at least two gerotor stages and teeth projecting radially outside of a second gerotor stage of the at least two gerotor stages. The tooth gaps of the at least two gerotor stages are fluidically sealed at least one of against one another and relative to a surrounding area.

Abstract: The invention relates to a technology for transversely and longitudinally guiding reversing of a commercial vehicle (100)during controlled parking and/or manoeuvring of the commercial vehicle (100) as a following vehicle in accordance with a leading vehicle (200) in the surroundings of the commercial vehicle (100). The commercial vehicle (100) comprises at least one sensor (102)and/or at least one data interface (104) for sensing data of the surroundings of the commercial vehicle (100), the sensed surroundings containing the commercial vehicle (100) and/or the leading vehicle (200). Alternatively or in addition, the commercial vehicle(100)comprises at least one data interface (104)for sensing a control instruction for transverse and longitudinal guidance from the leading vehicle (200)in the surroundings of the commercial vehicle (100).

Abstract: The invention relates to a cooling module including an axial fan for vehicles, in particular for electric vehicles, which is characterized in that a cooling module casing encloses the axial fan and a flow deflection region and a cooling airflow enters the cooling module through an intake plane and leaves the cooling module through an outflow plane, wherein the intake plane and the outflow plane are aligned at an angle alpha in relation to one another and the angle alpha as the inclination of the intake plane in relation to the outflow plane is formed greater than or equal to 55° and the cooling module casing has a rear wall, wherein the rear wall is arranged at an angle beta of at most 90° in relation to the outflow plane, so that a flow deflection region is formed in the cooling module casing between the intake plane and the outflow plane and the rear wall.

Abstract: A spacer (1) for vibration-damped fastening of a mounting part (2) to a carrier part (3), wherein the spacer has a base body (4) with a first flange region (5) and a second flange region (6) which is opposite viewed in the longitudinal direction (L) of the base body and with a passage (7) in which a fastener (8) which is connected to the carrier part, can be received at least sectionally. The base body has an at least two-part design with a first body part (9) and at least a further, second body part (10), wherein the body parts can be detachable connected to one another to create the base body and wherein, in the connected state, a gap region (11) is provided between the first and second flange region, by which the border of a fastening hole (18) configured in the mounting part can be received.

Abstract: A spacer (1) for vibration-damped fastening of a mounting part (2) to a carrier part (3), wherein the spacer has a base body (4) with a first flange region (5) and a second flange region (6) which is opposite viewed in the longitudinal direction (L) of the base body and with a passage (7) in which a fastener (8) which is connected to the carrier part, can be received at least sectionally. The base body has an at least two-part design with a first body part (9) and at least a further, second body part (10), wherein the body parts can be detachable connected to one another to create the base body and wherein, in the connected state, a gap region (11) is provided between the first and second flange region, by which the border of a fastening hole (18) configured in the mounting part can be received.

Abstract: A heating and air conditioning system for a motor vehicle including a housing having an air outlet, a heating heat exchanger disposed inside the housing with a warm air path to heat air flowing therethrough, a warm air duct having a warm air intake opening and a warm air duct discharge opening disposed downstream of the heating heat exchanger channeling a partial flow of warm air from the warm air path to the air outlet, and a mode control damper rotatable about a rotational axis and connected downstream of the warm air duct in terms of flow, wherein the air outlet may be selectively opened completely or partially, and in a closed state may be partially or completely closed. The mode control damper functions simultaneously as the control damper for controlling the volume of air exiting the warm air duct discharge opening.

Abstract: Air conditioning system for multi-zone air conditioning of a motor vehicle interior comprising a casing with a mixing chamber and several zone outlets outgoing from mixing chamber, in which an evaporator and at least one heat exchanger are disposed such that main air flow from evaporator through at least one heat exchanger into zone outlets is linear and at least two bypass channels, each comprising a louver, in order to circumvent at least one heat exchanger connect a region downstream of evaporator and a region downstream of at least one heat exchanger, wherein the first bypass channel, as a mixing bypass channel, opens out into mixing chamber and the second bypass channel, as a stratification bypass channel, opens out into a zone outlet.

Abstract: The invention relates to a cooling module including an axial fan for vehicles, in particular for electric vehicles, which is characterized in that a cooling module casing encloses the axial fan and a flow deflection region and a cooling airflow enters the cooling module through an intake plane and leaves the cooling module through an outflow plane, wherein the intake plane and the outflow plane are aligned at an angle alpha in relation to one another and the angle alpha as the inclination of the intake plane in relation to the outflow plane is formed greater than or equal to 55° and the cooling module casing has a rear wall, wherein the rear wall is arranged at an angle beta of at most 90° in relation to the outflow plane, so that a flow deflection region is formed in the cooling module casing between the intake plane and the outflow plane and the rear wall.

Abstract: An arrangement for the air distribution of an air conditioning system (1) of a motor vehicle. The air conditioning system (1) is configured with a housing (2) with at least two flow paths (6, 7), which empty into a mixing chamber (8), and at least one air outlet (3a, 3b, 3c) as well as an air flap (10, 11, 12) which can open and close the at least one air outlet (3a, 3b, 3c). The arrangement has a device (18) for air mixing with at least one air resistance element (21), which is supported so that it can turn about an axis of rotation (20) and which extends in the direction of the axis of rotation (20). The air resistance element (21) is configured with at least one flow through opening, so that depending on the position of the device (18) a cross section of at least one flow path (6, 7) of the housing (2) can be changed.

Abstract: A heating and air conditioning device includes a warm air path that leads through a heat exchanger to a mixing chamber and to outlets of the heating and air conditioning device, and a cold air path that leads from the evaporator to the mixing chamber and the outlets of the heating and air conditioning device. A warm air duct is located at an end of the warm air path and an entrance to the mixing chamber. A cold air duct is located at the end of the cold air path and the entrance to the mixing chamber. One or more openings are formed on one of a side wall of the warm air duct and a side wall of the cold air duct so that air can flow from the cold air path into the warm air duct and from the warm air path into the cold air duct.

Abstract: The invention relates to an air deflector device for an air conditioning system in a motor vehicle. The air deflector device has at least one closure element and at least one air mixing element. The closure element and the air mixing element have a common rotational axis in the air deflector device. The closure element extends in the direction of the rotational axis across the entire depth of a cross-section of a flow passage to be closed off in the air conditioning system, and comprises retaining elements. The air mixing element, which extends in the direction of the rotational axis, is embodied according to the invention with cross-flow openings, so that a cross-section of at least one flow passage of the air conditioning system can be adjusted based on the position of the air deflector device.

Abstract: The invention concerns an air conditioning system for conditioning the air of a passenger compartment of a motor vehicle including a housing with a first flow channel and a second flow channel for conducting air and a refrigerant circuit with an evaporator and a condenser. The evaporator is arranged in the first flow channel and the condenser in the second flow channel. The air conditioning system is designed for cooling and heating the passenger compartment and for a reheat operation. The setting of the operating mode is done only via the controlling of air guidance mechanisms. One of the heat exchangers evaporator or condenser is arranged with a part of the heat transfer surface in both the first and the second flow channel.

Abstract: Air conditioning system for multi-zone air conditioning of a motor vehicle interior comprising a casing with a mixing chamber and several zone outlets outgoing from mixing chamber, in which an evaporator and at least one heat exchanger are disposed such that main air flow from evaporator through at least one heat exchanger into zone outlets is linear and at least two bypass channels, each comprising a louver, in order to circumvent at least one heat exchanger connect a region downstream of evaporator and a region downstream of at least one heat exchanger, wherein the first bypass channel, as a mixing bypass channel, opens out into mixing chamber and the second bypass channel, as a stratification bypass channel, opens out into a zone outlet.

Abstract: A device for expansion of coolant having a housing with a flow channel. A ball-shaped valve element arranged to be integrated inside the housing. The valve element is mounted so that it can turn about an axis of rotation and is configured with a through channel. The through channel of the valve element is configured with an entry opening and an exit opening and arranged so that the flow cross section of the through channel decreases from the entry opening to the exit opening in the direction of flow of the coolant. At the exit of the through channel the least flow cross section is formed.

Abstract: A heating and air conditioning system for a motor vehicle including a housing having an air outlet, a heating heat exchanger disposed inside the housing with a warm air path to heat air flowing therethrough, a warm air duct having a warm air intake opening and a warm air duct discharge opening disposed downstream of the heating heat exchanger channeling a partial flow of warm air from the warm air path to the air outlet, and a mode control damper rotatable about a rotational axis and connected downstream of the warm air duct in terms of flow, wherein the air outlet may be selectively opened completely or partially, and in a closed state may be partially or completely closed. The mode control damper functions simultaneously as the control damper for controlling the volume of air exiting the warm air duct discharge opening.

Abstract: An arrangement for the air distribution of an air conditioning system (1) of a motor vehicle. The air conditioning system (1) is configured with a housing (2) with at least two flow paths (6, 7), which empty into a mixing chamber (8), and at least one air outlet (3a, 3b, 3c) as well as an air flap (10, 11, 12) which can open and close the at least one air outlet (3a, 3b, 3c). The arrangement has a device (18) for air mixing with at least one air resistance element (21), which is supported so that it can turn about an axis of rotation (20) and which extends in the direction of the axis of rotation (20).The air resistance element (21) is configured with at least one flow through opening, so that depending on the position of the device (18) a cross section of at least one flow path (6, 7) of the housing (2) can be changed.

Abstract: A heating and air conditioning device includes a warm air path that leads through a heat exchanger to a mixing chamber and to outlets of the heating and air conditioning device, and a cold air path that leads from the evaporator to the mixing chamber and the outlets of the heating and air conditioning device. A warm air duct is located at an end of the warm air path and an entrance to the mixing chamber. A cold air duct is located at the end of the cold air path and the entrance to the mixing chamber. One or more openings are formed on one of a side wall of the warm air duct and a side wall of the cold air duct so that air can flow from the cold air path into the warm air duct and from the warm air path into the cold air duct.

Abstract: The invention relates to a motor vehicle air conditioning system having a plurality of control dampers, the control dampers being designed as at least one cold air damper and at least one warm air damper for controlling a cold air path and a warm air path, which system is characterized in that a passage for a partial air flow can be formed between the control dampers depending on the damper position, and in that the passage forms additional air flow resistance for the cold air flow, thereby increasing the linearity of flow control of the cold air flow and the warm air flow.