A method for operating an exhaust gas sensor in an exhaust system of an internal combustion engine of a vehicle. The exhaust gas sensor includes a ceramic sensor element having at least one measuring electrode and a heating device. A binary dewpoint end signal is calculated, based on data which relate to the internal combustion engine and the exhaust gas sensor, which indicates whether or not the occurrence of liquid water in the exhaust system is still to be expected. Whenever the vehicle is turned off and the dewpoint end signal simultaneously has the value which signals that the occurrence of liquid water in the exhaust system is still to be expected, the sensor element is heated by its heating device to a temperature for a certain period of time in such a way that the sensor element dries.

An internal combustion engine controller for an internal combustion engine comprising a memory and a processor. The memory is configured to store a plurality of control maps, each control map defining a hypersurface of actuator setpoints for controlling an actuator of the internal combustion engine based on a plurality of input variables to the internal combustion engine controller. The processor comprises a map updating module, a parameter updating module and an engine setpoint module. The map updating module is configured to calculate an optimised hypersurface for at least one of the control maps based on a performance objective function of the internal combustion engine, sensor data from the internal combustion engine, and the plurality of input variables, wherein the performance objective function includes parameters. The parameter updating module is configured to update a parameter of the performance objective function upon determining a change in an operating condition of the internal combustion engine. The parameters comprise one or both of: engine parameters associated with an engine model; and cost parameters associated with a cost function. The map updating module is further configured to update the hypersurface of the control map based on the optimised hypersurface. The engine setpoint module is configured to output a control signal to each actuator based on a location on the hypersurface of the respective control map defined by the plurality of input variables.

A gas sensor includes a housing including a locking step part, a sensor body including a locked part locked to the locking step part, a sealing member filled between an inner periphery of the housing and an outer periphery of the sensor body on a base end side of the locked part, an insulating member disposed on the base end side of the sealing member, and a circular disc spring pressing a base end surface of the insulating member. The housing includes a caulking part caulking the circular disc spring to cover the circular disc spring. The elastically compressed circular disc spring is disposed between the caulking part and the insulating member. At least part of a base end side pressing part, at which the caulking part presses the circular disc spring, is disposed between an inner and outer periphery edges of the base end surface of the insulating member.

A gas sensor control apparatus (300) including a control section (61) which executes a first receiving process (STEP 1) for receiving a first detection result output from a mixed-potential-type ammonia detection section (42) for detecting ammonia contained in a gas under measurement and corresponding to the concentration of ammonia, a second receiving process (STEP 1) for receiving a second detection result output from an oxygen detection section (2) for detecting oxygen contained in the gas under measurement and corresponding to the concentration of oxygen, a first concentration calculation process (STEP 3) for calculating a first ammonia concentration of the gas under measurement based on the first detection result and the second detection result, and a pressure correction process (STEP 6) for correcting the first ammonia concentration based on pressure information obtained from an external device (220), thereby obtaining a second ammonia concentration of the gas under measurement.

A drive system for driving a motor vehicle has an internal combustion engine and an operating mode coordination device for determining and controlling the operating mode of the internal combustion engine. The drive system has a function coordination device for coordinating secondary functions of the drive system, the function coordination device being designed for generating, based on the coordination of the secondary functions, an operating mode request for the operating mode coordination device for controlling the operating mode of the internal combustion engine, and transmitting it to the operating mode coordination device. The invention further relates to a motor vehicle having a drive system, and a method for operating a drive system of a motor vehicle.

The invention relates to a motor controller for an internal combustion engine of a vehicle, comprising a control unit for setting one or more control variables on the basis of one or more measured variables according to a stored control scheme; wherein the control unit is designed to modify the stored control scheme when the control unit is used as intended with the operational internal combustion engine, which is being controlled by the motor controller, according to a specified learning algorithm, namely using at least one feedback parameter which is associated with an optimization criterion and is provided to the control unit, in order to provide an improved control of the internal combustion engine.

A method for venting a fuel tank system of an internal combustion engine is provided, wherein the fuel tank system includes at least a fuel tank, a fuel vapor filter that is fluidically connected to an opening to the environment, a vent line that leads from the fuel tank to the fuel vapor filter, a purge gas line that leads from the fuel vapor filter to a fresh gas tract of the internal combustion engine, a purge gas conveying device that is integrated into the purge gas line, and an exhaust tract with a lambda sensor integrated therein. Control of the purge gas conveying device is carried out based on the measuring signal of the lambda sensor in order to regulate a volume flow of the purge gas in the purge gas line. The method may advantageously be carried out in an internal combustion engine that additionally includes a lambda controller. Since such an internal combustion engine should include a lambda sensor anyway for operating such a lambda controller, the method allows regulation of the venting of the fuel tank system of the internal combustion engine without an additional sensor system, which is advantageous for the manufacturing costs for such an internal combustion engine.

A gas sensor control apparatus (300) including a control section (61) which executes a first receiving process (STEP 1) for receiving a first detection result output from a mixed-potential-type ammonia detection section (42) for detecting ammonia contained in a gas under measurement and corresponding to the concentration of ammonia, a second receiving process (STEP 1) for receiving a second detection result output from an oxygen detection section (2) for detecting oxygen contained in the gas under measurement and corresponding to the concentration of oxygen, a first concentration calculation process (STEP 3) for calculating a first ammonia concentration of the gas under measurement based on the first detection result and the second detection result, and a pressure correction process (STEP 6) for correcting the first ammonia concentration based on pressure information obtained from an external device (220), thereby obtaining a second ammonia concentration of the gas under measurement.

A portable oxygen and carbon dioxide analyzer device includes a lightweight housing with physical dimensions rendering the analyzer device portable. The analyzer device meets Environmental Protection Agency (EPA) and International Organization for Standardization (ISO) criteria for linearity, repeatability, and response time. The analyzer device can be used for emissions testing without the need of a temperature controlled environment. The analyzer device is meant to be used at the testing location which can be hundreds of feet (meters) above ground level. The analyzer device is light weight and physically small to facilitate transportation to the testing location. The analyzer device uses an algorithm programed into its digital controller to compensate for ambient temperature and pressure fluctuations during the testing procedure. The analyzer device has analog and digital outputs and internal data logging capabilities to facilitate calibration and monitoring of flue gas component concentrations.

Methods and systems are provided for adjusting a throttle based on an intake oxygen sensor output. In one example, a method may include adjusting a position of a throttle based on a dilution threshold and a total aircharge dilution level, the total dilution aircharge level based on an output of an intake oxygen sensor. Additionally, spark timing may be adjusted based on the total aircharge dilution level.