Abstract: A method and apparatus for compensates for oxygen sensor aging determines a correction of by measuring oxygen content above a specified threshold value and measuring current flowing through the sensor over time.

Abstract: An internal combustion engine may include: a combustion chamber to burn an air/gas mixture; an intake manifold configured to feed the air/gas fuel mixture to the combustion chamber at specified times for combustion; and an auxiliary starting system for starting the internal combustion engine. The auxiliary starting system comprises: an auxiliary fuel tank to store an auxiliary fuel; a control valve to open or close a connection between the auxiliary fuel tank and the intake manifold; an ambient temperature sensor to produce a signal that indicates an ambient temperature of the gas internal combustion engine; and a control unit to receive the signal from the ambient temperature sensor and to operate the control valve to feed auxiliary fuel from the auxiliary fuel tank into the intake manifold to start the gas internal combustion engine if the ambient temperature is lower than a specified ambient temperature threshold.

Abstract: A sensor device includes: a housing body delimiting within the housing body: a flow duct, and a bypass that branches off from the flow duct at a branching point, the bypass having a wall with an opening; and a sensor element configured to detect a gas content, the sensor element being arranged in the opening. The sensor element has: a sensor body having a longitudinal axis, an electrode chamber within the sensor body, a heating element embedded in the sensor body and by which a predefined region around the electrode chamber is heatable to a predefined operating temperature, an inlet duct coupled to the electrode chamber and having an inlet on the surface of the sensor body, and a thermal insulation sleeve on the sensor body, the thermal insulation sleeve extending at least axially in the direction of the longitudinal axis over a region of the electrode chamber.

Abstract: A method and apparatus for compensates for oxygen sensor aging determines a correction of by measuring oxygen content above a specified threshold value and measuring current flowing through the sensor over time.

Abstract: A sensor for detecting the oxygen content in the intake tract of an internal combustion engine includes: a sensor element having a measurement electrode; a metal cap that surrounds the sensor element; a heat dissipation element that connects the sensor element and the metal cap; and a bracket for the sensor element. The bracket is in the form of a plastic housing configured to accommodate evaluation electronics for the sensor element.

Abstract: A sensor element may include a measuring element and a functional housing at least partially surrounding the measuring element including a plastic molded housing. The measuring element may include a hot plate mounted on a carrier substrate by means of narrow arms in a broadly thermally decoupled manner. The carrier substrate may be provided with contacts leading to the measuring element and terminating in contact/bonding points on the carrier substrate. The carrier substrate together with the contact/bonding points may be at least partially integrated into the plastic molded housing, leaving the hot plate exposed. The housing may include connection wiring for the contact/bonding points.

Abstract: A system for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include a temperature sensor for detecting an elevated exhaust gas temperature, a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, and a processing device for determining the regeneration phase on the basis of the detected values. A method for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include detecting an elevated exhaust gas temperature, sampling a signal from a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, detecting that the particulate content is elevated, and determining the regeneration phase.

Abstract: A sensor device includes: a housing body delimiting within the housing body: a flow duct, and a bypass that branches off from the flow duct at a branching point, the bypass having a wall with an opening; and a sensor element configured to detect a gas content, the sensor element being arranged in the opening. The sensor element has: a sensor body having a longitudinal axis, an electrode chamber within the sensor body, a heating element embedded in the sensor body and by which a predefined region around the electrode chamber is heatable to a predefined operating temperature, an inlet duct coupled to the electrode chamber and having an inlet on the surface of the sensor body, and a thermal insulation sleeve on the sensor body, the thermal insulation sleeve extending at least axially in the direction of the longitudinal axis over a region of the electrode chamber.

Abstract: A sensor for detecting a gas content includes: a sensor body; an electrode chamber arranged in the sensor body; a first heating element embedded in the sensor body and configured to heat a specified region to a specified operating temperature; and an inlet duct, in the sensor body, coupled to the electrode chamber and having an inlet on the surface of the sensor body. The inlet duct is arranged such that, during operation of the sensor at the specified operating temperature, the inlet is axially spaced from the electrode chamber such that the sensor body is at a maximum temperature at the surface of the sensor body in a region around the inlet, which temperature is less than or equal to a temperature threshold that ensures that an air-fuel mixture flowing past the inlet will not be ignited.

Abstract: A sensor element may include a measuring element and a functional housing at least partially surrounding the measuring element including a plastic molded housing. The measuring element may include a hot plate mounted on a carrier substrate by means of narrow arms in a broadly thermally decoupled manner. The carrier substrate may be provided with contacts leading to the measuring element and terminating in contact/bonding points on the carrier substrate. The carrier substrate together with the contact/bonding points may be at least partially integrated into the plastic molded housing, leaving the hot plate exposed. The housing may include connection wiring for the contact/bonding points.

Abstract: A sensor for detecting a gas may include a transport layer for transporting ions, a first electrode and a second electrode spaced apart from one another by the transport layer, a heating device controlled by a voltage source, and a second voltage source applying a voltage difference across the electrodes. The transport layer may be conductive for the ions starting from a specific temperature. As a result of applying the voltage difference, ions stream from the first electrode through the transport layer to the second electrode if the first and second electrodes are in contact with the gas. The voltage source may provide a voltage potential of zero volts averaged over time or provide the voltage potential of the first electrode at the heating device.

Abstract: A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.

Abstract: A method for producing a sensor element for a sensor for detection of substances contained in a gas flow includes: providing a ceramic carrier; and producing an open measurement electrode, arranged on the carrier and exposed to the gas flow. The open measurement electrode is produced by: a combined printing technique from a cermet base print for a base layer of a ceramic-platinum cermet, arranged on the carrier, and a platinum upper printing for a cover layer of sintered platinum arranged on the base layer.

Abstract: A method and device for measuring the soot load in the exhaust gas systems of diesel engines using a sensor which is mounted downstream of a particulate filter and comprises a sensor element, to measure the operability of the particulate filter. According to the method, the soot load of the sensor element is measured resistively or capacitively using electrodes. The measuring voltage of the sensor element is controlled depending on at least one actual operating parameter of the diesel engine.

Abstract: A sensor for detecting the oxygen content in the intake tract of an internal combustion engine includes: a sensor element having a measurement electrode; a metal cap that surrounds the sensor element; a heat dissipation element that connects the sensor element and the metal cap; and a bracket for the sensor element. The bracket is in the form of a plastic housing configured to accommodate evaluation electronics for the sensor element.

Abstract: A system for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include a temperature sensor for detecting an elevated exhaust gas temperature, a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, and a processing device for determining the regeneration phase on the basis of the detected values. A method for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include detecting an elevated exhaust gas temperature, sampling a signal from a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, detecting that the particulate content is elevated, and determining the regeneration phase.

Abstract: A diagnostic method is provided for a particle filter arranged in exhaust-gas flow of an internal combustion engine. A particle concentration is detected by a particle sensor positioned downstream of the particle filter. The combustion-relevant engine parameters are briefly changed by an engine controller in such a way that an untreated emissions concentration from the engine is significantly increased. A filter fault message is output if the detected associated measurement values of the particle concentration exceed a detection threshold value of the particle sensor, which is in particular considerably greater than a predefined, preferably volume-related particle limit value.

Abstract: A soot sensor for the detection of soot particles in an exhaust gas flow, having interdigitally engaged measurement electrodes applied on a substrate. An electrical resistance between the measurement electrodes is a measure of soot load of the exhaust gas flow. The measurement electrodes are divided into two regions, a first region in which no soot particles can be deposited and a second region where soot particles are deposited from the exhaust gas flow. The first region and the second region are exposed simultaneously to the other conditions prevailing in the exhaust gas flow.

Abstract: A method for performing on-board functional diagnostics on a soot sensor of a vehicle and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine. The soot sensor is electrically connected to an evaluation circuit with is permanently installed in the motor vehicle. In order to specify a method for performing functional diagnostics on a soot sensor and/or for detecting further components in the soot, with which method it is possible to detect a faulty soot sensor and/or further components in the soot in a cost-effective way, the evaluation circuit measures the temperature coefficient of the soot sensor and detects the defectiveness of the soot sensor and/or the presence of further components in the soot on the basis of the temperature coefficient of the soot sensor.

Abstract: A method for operating a soot sensor that has an interdigital electrode structure, to which a measurement voltage is applied. Soot particles from an exhaust gas flow are deposited onto the interdigital electrode structure and the measurement current is evaluated as a measure of the soot load of the soot sensor. The interdigital electrode structure is burned clean at or above a predetermined soot load, which is detected by means of an upper current threshold. The method includes burning the interdigital electrode structure clean by heating up the soot sensor after the upper current threshold has been reached; monitoring the measurement current while the interdigital electrode structure is being burned clean; and stopping the burning clean when the value of the measurement current has reached a lower current threshold.