Abstract: A vehicle temperature control system, for electric motor-powered vehicles or hybrid vehicles, includes a heater (18), which can be operated electrically or/and with fuel, with a first heat exchanger device (16) for transferring heat provided in the heater (18) to a first heat carrier medium provided in a first heat carrier medium circuit (12). An operating material tank (20) holds a liquid operating material (24). A second heat exchanger device (26) provides heat transfer between the first heat carrier medium provided in the first heat carrier medium circuit (12) and energy storage material (36) contained in the operating material tank (20). A third heat exchanger device (38) provides heat transfer between the first heat carrier medium provided in the first heat carrier medium circuit (12) and a second heat carrier medium provided in a second heat carrier medium circuit (40).

Abstract: A combustion chamber assembly unit for a fuel-operated vehicle heater includes a mixing chamber (20) extending in a direction of a combustion chamber assembly unit longitudinal axis (L) for generating an air/fuel mixture. A fuel feed device (38) feeds fuel to the mixing chamber (20) and a combustion air feed device feeds combustion air to the mixing chamber (20). A diffuser device (22) is arranged downstream in relation to the mixing chamber (20) in the direction of the combustion chamber assembly unit longitudinal axis (L). The fuel feed device (38) includes an evaporator device (36). The combustion air feed device (18) includes a swirling flow generation device (14). The swirling flow generation device (14) is arranged with the evaporator device (36) upstream in relation to the mixing chamber (20) in the direction of the combustion chamber assembly unit longitudinal axis (L).

Abstract: A process for manufacturing a cast metal heat exchanger housing (12) for a vehicle heater having a pot-shape housing wall (14) extending in a direction of a housing longitudinal axis (L) and having a plurality of heat transfer ribs (22) extending on an outer side of the housing wall (14) in the area of a circumferential wall (16) and in the area of a bottom wall (18) of the housing wall (14) in the direction of the housing longitudinal axis (L). The process includes metal casting wherein a sprue cross-sectional area including at least some of the heat transfer ribs (22). The cast metal heat exchanger housing has an axial end face formed upon cutting off metallic material that is essentially at right angles to the housing longitudinal axis and extends into an area of at least some of the heat transfer ribs.

Abstract: A vehicle heater includes a burner assembly unit (12) with a combustion chamber (18) to be fed with combustion air (V) and fuel (B) and a flame tube (24). A heat exchanger assembly unit (14) includes an inner heat exchanger housing (28) with an inner circumferential wall (30) and an outer heat exchanger housing (34) with an outer circumferential wall (36). A heat transfer medium flow space (40) is between the inner and outer heat exchanger housings, which are elongated in a longitudinal axis (L) direction. A waste gas backflow space (44), between the inner circumferential wall (30) and the flame tube, opens towards an exhaust gas outlet. A catalytic converter device (52) is provided in the waste gas backflow space associated with an energizable heating unit (58), or/and insulation material (64) is provided on an outer side (62) facing away from the heat transfer medium flow space.

Abstract: A vehicle heater includes a heater housing (12?), through which heating air to be heated can flow, with a heating air inlet area and with a heating air outlet area. A burner unit is arranged in the heater housing. A combustion air blower (46?) is arranged in the heater housing for delivering combustion air to the burner unit. A heat exchanger unit is arranged in the heater housing (12?). Heating air flowing through the heater housing (12?) can flow around the heat exchanger unit. A combustion air intake muffler (76) is arranged essentially in the heater housing (12?). A muffler housing (78) made in one piece with the heater housing (12?) is associated with the combustion air blower (46?).

Abstract: A fuel connection unit (10) for a fuel-operated vehicle heater (18) includes a connection unit body (12), which can be arranged at a heater housing (16). A fuel release line connection area (32) connects a fuel release line leading to a combustion chamber. A fuel feed line connection area (46) projects from the connection unit body (12) for connecting a fuel feed line. At least one functional unit (50), for influencing the flow of fuel in a fuel flow volume (36) formed in the connection unit body (12), is provided in the connection unit body (12).

Abstract: A fuel connection unit for a fuel-operated vehicle heater includes a connection unit body (12) to be mounted on a heater body (78). A fuel release line connection area (16) is positioned such that it meshes with or faces an interior (80) of the heater body (78). The fuel release line connection area (16) connects a fuel release line (104), extending in the interior (80), with a fuel feed line connection area (20) to be positioned exposed on an outer side of the heater body (78), for connecting a fuel feed line.

Abstract: A vehicle heater includes a heater housing (12) elongated in a direction of a housing longitudinal axis (L). A housing circumferential wall (34) defines a combustion air flow space (40). A combustion chamber assembly unit (14) is carried on the heater housing and has a combustion chamber (20) receiving combustion air from the combustion air flow space. A combustion air blower (42), with a combustion air blower housing (44), is carried on the heater housing. A combustion air inlet opening (56), in the combustion air blower housing, provides the inlet for combustion air into the combustion air blower. A combustion air connection unit (64), carried on the heater housing, has a combustion air passage duct (74) open outwardly in a first duct opening area (76) for receiving combustion air. The combustion air passage duct is open towards the combustion air inlet opening in a second duct opening area (78).

Abstract: A vehicle heater includes a burner area, a circumferential wall providing a combustion chamber, a flame tube with a first end forming or adjacent to a part of the combustion chamber circumferential wall and a second flame tube end. A heat exchanger housing has a circumferential wall enclosing the flame tube. A waste gas backflow space is formed, between an outer side of the flame tube and an inner side of the heat exchanger housing circumferential wall, with an inlet area at the second flame tube end and with an outlet area in the area of the first flame tube end. An inner dimension of the circumferential wall increases in the direction from an inlet area of the waste gas backflow space to an outlet area. An outer dimension of the flame tube increases in the direction from the second flame tube end to the first flame tube end.

Abstract: A carrier device for mounting a preferably fuel-operated heater (34) on a vehicle. The carrier device includes a mounting area (20) for mounting the carrier device (14) on a vehicle and a carrying area (152) for mounting a heater (34) on the carrier device (14). A combustion air line area (52) is provided for sending combustion air to a combustion air inlet (55) of a heater (34), or/and a heat transfer medium line area (60) is provided for sending heat transfer medium flowing in a heat transfer medium circuit (176) of a vehicle through the carrier device (14) or/and to or from a heat exchanger area (38) of the vehicle heater (34).

Abstract: A combustion chamber assembly unit for a fuel-operated vehicle heater includes a combustion chamber housing, a combustion chamber formed in the combustion chamber housing, an evaporator medium for the absorption of liquid fuel and for the discharge of fuel vapor into the combustion chamber, and a heating/ignition device for heating the evaporator medium or/and for igniting a mixture of fuel and combustion air formed in the combustion chamber. The heating/ignition device includes at least one radiation source for the emission of electromagnetic radiation into the combustion chamber and at least one absorption body for the absorption of electromagnetic radiation emitted into the combustion chamber.

Abstract: A fuel-operated vehicle heater includes a burner area (12) with a combustion chamber (14); a fuel pump (24); and a combustion air blower (28). A pressure sensor (38) detects a feed back pressure. An actuating unit (36) actuates the fuel pump (24) with a predefined value of a pump operating variable, and actuates the combustion air blower with a predefined value of a blower operating variable. A heater process includes detecting the feed back pressure in case of a feed operating state set during the combustion operation and comparing the detected feed back pressure (Pe) with an expected feed back pressure (PE) for the set feed operating state. If the detected feed back pressure deviates from the expected feed back pressure the pump operating variable is changed such that the feed back pressure changes toward the expected feed pressure and/or essentially corresponds to the expected feed back pressure.

Abstract: A flow restrictor element, especially for restricting the air flow in an air duct system of a vehicle, comprises a ring-shaped restrictor element carrier (12) to be arranged on a flow guide duct as well as at least one restrictor element (28). The at least one restrictor element (28) is arranged within the restrictor element carrier (12), radially inwardly in relation to a central axis (M) of the flow restrictor element (10) and is detachable from the restrictor element carrier (12) for changing a restriction cross-sectional area, wherein a locking device (16) is provided on an outer circumferential area (14) of the restrictor element carrier (12) for locking the restrictor element carrier (12) on a flow guide duct.

Abstract: A method is provided for operating a fuel-operated vehicle heater (10) during a start phase of combustion operation. The heater includes a combustion air feed device (26) feeding air and a fuel feed device (22) feeding fuel (B) to a burner area (12) with a combustion chamber (16). An electrically energizable ignition element (32) ignites a fuel/air mixture formed. The method includes energizing the ignition element (32) in a preheating phase prior to the fuel feed, at a time of entry into an ignition phase, detecting electrical resistance of the ignition element (32) and determining a desired resistance based on the electrical resistance of the ignition element (32) detected and operating the ignition element (32) in a resistance-regulating operating mode during the ignition phase such that an actual resistance of the ignition element (32) is in the range of the determined desired resistance of the ignition element (32).

Abstract: A vehicle heater includes a combustion chamber assembly unit (18) to be fed with fuel and combustion air, a housing (22) with a circumferential wall (24) defining a combustion air flow space (26), a combustion air blower (30) adjoining an end face (28) of the circumferential wall (24) of the housing (12) in the direction of a housing longitudinal axis (L), a fuel feed line and a sealing formation with a first sealing formation area arranged between the end face (28) of the circumferential wall (24) and the blower housing (32). A second sealing formation area (62) is positioned to mesh with a fuel feed line passage opening (38) for establishing a closure between the circumferential wall (24) and the fuel feed line (36). The sealing formation (56) includes a sealing element (54) providing the first sealing formation area (58) and the second sealing formation area (62).

Abstract: A combustion air blower, especially side channel blower, for a fuel-operated vehicle heater, includes a blower housing (38). An air flow space (44), through which combustion air being fed can flow, is formed in the blower housing (38). Air flowing over an inlet area (55) into the air flow space (44) flows to a feed area enclosing a feed wheel (48). At least one hydrocarbon storage element (70, 88) is formed in the air flow space (44), for storing gaseous hydrocarbon present in the air flow space (44).

Abstract: A vehicle heater includes a heater housing (12), through which heating air to be heated can flow, with a heating air inlet area and with a heating air outlet area. A burner unit is arranged in the heater housing. A combustion air blower is arranged in the heater housing for feeding combustion air to the burner unit. A heat exchanger unit is arranged in the heater housing (12). Heating air flowing through the heater housing (12) can flow around the heat exchanger unit. A combustion air intake muffler (76), which is essentially arranged in the heater housing (12), is associated with the combustion air blower (46).

Abstract: A combustion chamber assembly unit for a fuel-operated vehicle heater includes a combustion chamber housing (14) elongated in a direction of a housing longitudinal axis (L), with a combustion chamber (16) radially outwardly bounded by a circumferential wall (18), and with a combustion chamber bottom (20) axially delimiting the combustion chamber (16). A combustion air feed volume (36) is provided that is open to the combustion chamber (16) via a plurality of passage openings (38). A cooling medium feed device (46) is provided for feeding a liquid cooling medium to the combustion air feed volume (36).

Abstract: A vehicle heater housing (46) has an inlet area (49), an outlet area (51) and an air flow space (47) for air to be heated with a burner chamber assembly unit (30), to be fed with combustion air and fuel. A heat exchanger area (11), including a heat exchanger housing (12), is elongated in the direction of a housing longitudinal axis (L) with an outer side (24) around which air flowing in the air flow space flows. Heat transfer ribs are on a side of the heat exchanger housing. The heater housing has a housing circumferential wall (56) and an outlet front wall area (58). The heat transfer ribs have a longitudinal edge (64) extending along the housing circumferential wall and a radial edge extending along the outlet front wall area. A distance of the radial edge from the outlet front wall area changes from radially outwards to radially inwards.

Abstract: A vehicle heater combustion chamber assembly includes a housing area (14) with an ignition element mount (36) supporting an ignition element (34) and another housing area (16) defining a fluid flow space (26) with an access opening (32). The ignition element or/and an electric ignition element line (76) is moveable through the access opening. An elastically deformable closing element (40) closes the access opening and includes a meshing area (48), interacting with a housing area wall (42) surrounding the ignition element access opening and including an inner meshing area supported relative to an inner surface of the wall, which faces the fluid flow space. The closing element includes a closing element bottom (44) with an outer bottom surface (94) oriented outwardly, in the direction away from the fluid flow space. The outer bottom surface is offset in a direction of a closing element longitudinal axis towards the fluid flow space.