Abstract: A foot brake valve (2?) of a pneumatic brake system in a motor vehicle has an installation plate (4?), on which a brake pedal (14) is pivotably mounted and to which a housing (18?) of a control unit (16, 26) is fastened. A spring-loaded plunger piston (36) in actuating contact with the brake pedal (14) is guided axially movably in an annular collar (50) projecting upward out of the installation plate (4?). For fastening the housing (18?) of the control unit (16, 26) to the installation plate (4?), the housing (18?) has an intermediate flange (48) which is screw-connected to the main part of the housing (18?) and has the annular collar (50). The intermediate flange (48) is coaxially rotatably about a vertical central axis (32), and is connectable in non-positively locking fashion to the installation plate (4?) via a releasable clamping connection (62).

Abstract: A fuel cell device (10) comprising a reformer (26) is disclosed, which is provided for reforming fuel (B) for electrochemical conversion in a fuel cell unit (12), and a fuel cell unit (12), which is provided to electrochemically convert reformed fuel (RB). It is proposed to arrange a heat exchanger (40) downstream of the reformer (26) and upstream of the fuel cell unit (12) in relation to a supply of reformed fuel (RB) to the fuel cell unit (12).

Abstract: The invention relates to a fuel cell device (10), comprising at least one fuel cell stack (12) and at least one processing unit (14). According to the invention, a distribution manifold (60) for carrying media is disposed between the at least one fuel cell stack (12) and the at least one processing unit (14).

Abstract: A method for operating a fuel injection system of a motor vehicle in particular is described. The fuel injection system has a fuel accumulator, capable of receiving fuel via a metering unit. In the method, an actual pressure in the fuel accumulator is affected by an I regulator, among other things. A precontrol value is generated by a precontrol characteristic map, which is used for compensating manufacturing-related differences in the components of the fuel injection system.

Abstract: A method for operating a fuel injection system of a motor vehicle in particular is described. The fuel injection system has a fuel accumulator, capable of receiving fuel via a metering unit. In the method, an actual pressure in the fuel accumulator is affected by an I regulator, among other things. A precontrol value is generated by a precontrol characteristic map, which is used for compensating manufacturing-related differences in the components of the fuel injection system.

Abstract: The invention relates to an expansion device for a refrigerant, in particular an expansion device to control the high-pressure level of an air conditioner. In accordance with the invention, it is provided that the expansion device (16) is a sliding seat valve (22). In addition, the invention relates to an air conditioner (10), in particular an air conditioner (10) for a motor vehicle, with a compressor (12), a condenser or gas cooler (14), an expansion device (16) as well as an evaporator (18). In accordance with the invention, it is proposed that the expansion device (16) is formed by at least one sliding seat valve (22).

Abstract: The invention relates to an expansion device for a refrigerant, in particular an expansion device to control the high-pressure level of an air conditioner. In accordance with the invention, it is provided that the expansion device (16) is a sliding seat valve (22). In addition, the invention relates to an air conditioner (10), in particular an air conditioner (10) for a motor vehicle, with a compressor (12), a condenser or gas cooler (14), an expansion device (16) as well as an evaporator (18). In accordance with the invention, it is proposed that the expansion device (16) is formed by at least one sliding seat valve (22).

Abstract: The invention relates to a system to regulate the heat balance of a vehicle, with a heat cycle that dissipates engine heat, which features a cooling circuit (38) and a heating circuit (36), through which circuits a coolant can flow, and with at least one component (20) of the vehicle producing waste heat, wherein a system is provided with which the waste heat of at least one component of the vehicle can be transferred to the heat cycle.

Abstract: The invention relates to an air-conditioning unit (10) for a motor vehicle with a heating heat transfer unit (28) connected to a coolant circuit (42) in an internal combustion engine and comprising an evaporator (22) installed upstream in the direction of flow of a fan (36). A compressor (12) in a refrigerant circuit (32) pumps a refrigerant through a gas cooler (16) and an expansion valve (20) during a cooling operation, and pumps said refrigerant to the evaporator (22) via the expansion valve (20) by by-passing the gas cooler (16) during a heating operation. A coupled heat exchanger (30) is provided between the coolant circuit (42) and the refrigerant circuit (32).

Abstract: The invention relates to an air-conditioning unit (10) for a motor vehicle with a heating heat transfer unit (28) connected to a coolant circuit (42) in an internal combustion engine and comprising an evaporator (22) installed upstream in the direction of flow of a fan (36). A compressor (12) in a refrigerant circuit (32) pumps a refrigerant through a gas cooler (16) and an expansion valve (20) during a cooling operation, and pumps said refrigerant to the evaporator (22) via the expansion valve (20) by by-passing the gas cooler (16) during a heating operation. A coupled heat exchanger (30) is provided between the coolant circuit (42) and the refrigerant circuit (32).

Abstract: A method for calibrating a pressure sensor in a fuel metering system and a corresponding device, which enable the pressure sensor to be calibrated as precisely as possible. For this purpose, the instantaneous cooling-water temperature of the internal combustion engine is measured and the drop in the cooling-water temperature is derived therefrom as a measure for the standstill time of the internal combustion engine, the pressure sensor first being calibrated when the standstill time exceeds a predefinable minimum. Thus, an arrangement for monitoring the cooling-water temperature already present per se in the vehicle may be used to reliably and precisely calibrate the pressure sensor. Therefore, this is able to be realized very quickly and almost without extra expenses, in particular without using an additional timing supervision for measuring the standstill time.

Abstract: The apparatus (1) for treating exhaust gas from an internal combustion engine includes a storing catalyzer for absorbing NOx during lean operating conditions and a device for burning fuel (3) in an exhaust gas stream (2) to produce a reducing atmosphere in the exhaust gas for storing catalyst regeneration and an aerodynamic control device for controlling the burning of the fuel in the exhaust gas stream, so that combustion is clearly improved when the engine is operated under lean operating conditions and no carbon is formed.

Abstract: A method for calibrating a pressure sensor in a fuel metering system and a corresponding device, which enable the pressure sensor to be calibrated as precisely as possible. For this purpose, the instantaneous cooling-water temperature of the internal combustion engine is measured and the drop in the cooling-water temperature is derived therefrom as a measure for the standstill time of the internal combustion engine, the pressure sensor first being calibrated when the standstill time exceeds a predefinable minimum. Thus, an arrangement for monitoring the cooling-water temperature already present per se in the vehicle may be used to reliably and precisely calibrate the pressure sensor. Therefore, this is able to be realized very quickly and almost without extra expenses, in particular without using an additional timing supervision for measuring the standstill time.

Abstract: The apparatus (1) for treating exhaust gas from an internal combustion engine includes a storing catalyzer for absorbing NOx during lean operating conditions and a device for burning fuel (3) in an exhaust gas stream (2) to produce a reducing atmosphere in the exhaust gas for storing catalyst regeneration and an aerodynamic control device for controlling the burning of the fuel in the exhaust gas stream, so that combustion is clearly improved when the engine is operated under lean operating conditions and no carbon is formed.