Abstract: A coolant delivery device for an internal combustion engine, in particular for a motor vehicle, includes a pump, a an activatable electric motor, a shut-off valve, a return line, a heating device, and a common module housing. The pump is configured to deliver liquid coolant, and includes a suction port configured to connect to a tank, and a pressure port for the coolant and which is assigned to the engine. The motor is configured to drive the pump. The valve is assigned to the suction port. The return line is configured to connect to the tank, and includes at least one check valve. At least the pump, motor, valve, heating device, and the at least one check valve together form a delivery module and are positioned in the common module housing.

Abstract: A water injection device, in particular of an internal combustion engine, includes a water tank for storing water, a conveying element connected to the water tank for conveying water, at least one water injector connected to the conveying element for injecting water, and a water quality and water fill level detection device for detecting a quality of the water in the water tank and a fill level of the water tank.

Abstract: A method for operating a device for injecting water into an internal combustion engine, the device including a water tank for storing water, a pump for conveying the water, the pump being connected to the water tank via a first line, and the pump being operable in a conveying mode and in a back-suction mode, a drive for driving the pump, at least one water injector, which is configured to inject water into an air-conducting line of the internal combustion engine, the water injector being connected to the pump via a second line, the at least one water injector being opened during the operation of the pump in the back-suction mode, in which the water is conveyed in the direction of the water tank, so that air flows into the second line.

Abstract: A water injection device of an internal combustion engine, including a water tank for storing water, at least one water injector, a conveying element for conveying water from the water tank into the water injector, and a shut-off element, which is situated in an area between the conveying element and the water injector, and which is configured to maintain a system pressure between the shut-off element and the water injector at a level such that water situated in the area is prevented from evaporating. An internal combustion engine, which includes a water injection device.

Abstract: A coolant delivery device for an internal combustion engine, in particular for a motor vehicle, includes a pump, a an activatable electric motor, a shut-off valve, a return line, a heating device, and a common module housing. The pump is configured to deliver liquid coolant, and includes a suction port configured to connect to a tank, and a pressure port for the coolant and which is assigned to the engine. The motor is configured to drive the pump. The valve is assigned to the suction port. The return line is configured to connect to the tank, and includes at least one check valve. At least the pump, motor, valve, heating device, and the at least one check valve together form a delivery module and are positioned in the common module housing.

Abstract: A water injection device, in particular of an internal combustion engine, includes a water tank for storing water, a conveying element connected to the water tank for conveying water, at least one water injector connected to the conveying element for injecting water, and a water quality and water fill level detection device for detecting a quality of the water in the water tank and a fill level of the water tank.

Abstract: A water injection device for an internal combustion engine of a motor vehicle includes at least one water injector for injecting water into an internal combustion engine. The water injection device further includes a water tank and a first supply line. The first supply line is configured to connect the water tank to the water injector. At least one biocide for controlling harmful organisms in the water injection device is provided in the water injection device.

Abstract: A water injection device of an internal combustion engine is provided. The water injection device includes a water tank for storing water, and a delivery element for delivering the water. The delivery element is connected to the water tank. The water injection device further includes at least one water injector for injecting water. The at least one water injector is connected to the delivery element. The water injection device further includes a pressure sensor, which is arranged in a line region between the delivery element and the water injector, and a control unit, which is designed to determine, on the basis of pressure data of the pressure sensor, a formation of vapor in the aforementioned line region when the water injector is closed and the delivery element is deactivated.

Abstract: A device for injecting water of an internal combustion engine includes a water tank, at least one water injector, at least one UV lamp, and a control unit. The water tank is configured to store water. The water injector is connected to the water tank and is configured to inject the water. The UV lamp is configured to emit ultraviolet radiation. The control unit is configured to switch on the UV lamp to decontaminate the water with the emitted ultraviolet radiation, and to switch on the water injector to inject the decontaminated water.

Abstract: A method and an apparatus for controlling an electric pump for furnishing water for injection into a combustion chamber of an engine are provided. The electric pump is connected to an inflow of a main water tank and has a high-pressure output at which the electric pump makes available water at a pressure elevated with respect to a pressure in the main water tank. The high-pressure output of the electric pump is connected to a return line that opens into a driving jet connector of a suction jet pump, a suction jet connector of the suction jet pump being connected to a further water tank, and a high-pressure output of the suction jet pump being connected to the main water tank.

Abstract: A water injection device of an internal combustion engine, including a water tank for storing water, at least one water injector, a conveying element for conveying water from the water tank into the water injector, and a shut-off element, which is situated in an area between the conveying element and the water injector, and which is configured to maintain a system pressure between the shut-off element and the water injector at a level such that water situated in the area is prevented from evaporating. An internal combustion engine, which includes a water injection device.

Abstract: A method for operating a device for injecting water into an internal combustion engine, the device including a water tank for storing water, a pump for conveying the water, the pump being connected to the water tank via a first line, and the pump being operable in a conveying mode and in a back-suction mode, a drive for driving the pump, at least one water injector, which is configured to inject water into an air-conducting line of the internal combustion engine, the water injector being connected to the pump via a second line, the at least one water injector being opened during the operation of the pump in the back-suction mode, in which the water is conveyed in the direction of the water tank, so that air flows into the second line.

Abstract: A water injection device of an internal combustion engine is provided. The water injection device includes a water tank for storing water, and a delivery element for delivering the water. The delivery element is connected to the water tank. The water injection device further includes at least one water injector for injecting water. The at least one water injector is connected to the delivery element. The water injection device further includes a pressure sensor, which is arranged in a line region between the delivery element and the water injector, and a control unit, which is designed to determine, on the basis of pressure data of the pressure sensor, a formation of vapour in the aforementioned line region when the water injector is closed and the delivery element is deactivated.

Abstract: A method and an apparatus for controlling an electric pump for furnishing water for injection into a combustion chamber of an engine are provided. The electric pump is connected to an inflow of a main water tank and has a high-pressure output at which the electric pump makes available water at a pressure elevated with respect to a pressure in the main water tank. The high-pressure output of the electric pump is connected to a return line that opens into a driving jet connector of a suction jet pump, a suction jet connector of the suction jet pump being connected to a further water tank, and a high-pressure output of the suction jet pump being connected to the main water tank.

Abstract: A method for setting a temperature of a sensor element, which is heatable with the aid of a heating device, for detecting at least one property of a gas in a measuring gas chamber includes at least one regulation of the heating device, the regulation including: (a) detecting at least one actual value of at least one controlled variable of the sensor element, (b) ascertaining a setpoint value of the at least one controlled variable, (c) generating at least one manipulated variable of the heating device with the aid of a comparison of the setpoint value and the actual value, and (d) in a monitoring step, checking at least one parameter used to set the temperature, and the at least one manipulated variable being influenced as a function of the check.

Abstract: A method for setting a temperature of a sensor element, which is heatable with the aid of a heating device, for detecting at least one property of a gas in a measuring gas chamber includes at least one regulation of the heating device, the regulation including: (a) detecting at least one actual value of at least one controlled variable of the sensor element, (b) ascertaining a setpoint value of the at least one controlled variable, (c) generating at least one manipulated variable of the heating device with the aid of a comparison of the setpoint value and the actual value, and (d) in a monitoring step, checking at least one parameter used to set the temperature, and the at least one manipulated variable being influenced as a function of the check.

Abstract: A method for assessing the conversion capacity of a catalytic converter for hydrocarbons when cold starting an internal combustion engine by means of an exhaust probe arranged behind the catalytic converter in the direction of flow, wherein an output signal from the exhaust probe is fed to a control unit.

Abstract: A method for operating an internal combustion engine (10) for a motor vehicle, said internal combustion engine (10) comprising an exhaust gas system (26) having at least one catalytic converter (28; 30) and at least one lambda probe (38; 40). The internal combustion engine (10) is operated alternately with a lean and a rich fuel-air mixture after a cold start for heating the catalytic converter (28; 30). The lambda probe (40) is heated after the cold start in such a way that it is ready for operation after at most 10 s and the internal combustion engine (10) is operated with a two-level control based on a signal (UL) from the lambda probe (40), such that the change between the operation with lean fuel-air mixture and the operation with rich fuel-air mixture is in each case initiated by the signal (UL) from the lambda probe (40).