Abstract: A deterioration signal generation device for an oxygen sensor having a power supply different than a power supply connected to an external device, including a connection unit for electrically connecting the ground lines of the respective power supplies; a first acquisition unit for electrically connecting to a first output line at a reference potential side and to a second output line at a sensor potential side of the oxygen sensor, to obtain first and second potentials, respectively; an operation unit that calculates a first differential value between the first and second potentials; a processing unit that performs an operation on the first differential value; a second acquisition unit that acquires a third potential of a first input line at a reference potential side of the external device; and an output unit that generates the deterioration signal by superposing the second differential value on the third potential.

Abstract: An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, based on the output value of the air-fuel ratio sensor, an imbalance determination parameter which becomes larger as an air-fuel ratio fluctuation of an exhaust gas passing through a position at which the air-fuel ratio sensor is disposed becomes larger, during a parameter obtaining period. The determination apparatus energizes the heater of the air-fuel ratio sensor in such a manner that a temperature of the air-fuel ratio element during the parameter obtaining period is higher than a temperature of the air-fuel ratio element during a period other than the parameter obtaining period. Accordingly, the imbalance determination parameter is obtained while the responsiveness of the air-fuel ratio sensor is high, and thus, the inter-cylinder air-fuel-ratio imbalance determination having a high accuracy can be made.

Abstract: A fault analysis method for a lambda probe of an internal combustion engine, in particular for detecting a heater input, has the following steps: measurement of an air ratio in the exhaust gas of the internal combustion engine by a lambda probe, control of the air ratio in the exhaust gas of the internal combustion engine by a lambda probe by a lambda controller intervention in accordance with the measured air ratio, and evaluation of the lambda controller intervention in order to detect a fault.

Abstract: An internal combustion engine includes at least two cylinders, an intake duct, an exhaust gas section and an exhaust gas recirculation line. The cylinders include a combustion chamber. The intake duct communicates with the combustion chambers via a cylinder inlet channel of the intake duct depending upon a switch position of a gas inlet valve. The exhaust gas section communicates with the combustion chambers depending upon a switch position of at least one gas outlet valve. Exhaust gas is guided back to the inlet channels via the exhaust gas recirculation line dependent upon a switch position of the exhaust gas recirculation valve. To detect a mixing air temperature in the inlet channels, a mixing air temperature sensor is provided. The determined mixing air temperatures are compared. Exhaust gas guided back due to uneven distribution is identified if a difference between the determined mixing air temperature is greater than a predetermined threshold value.

Abstract: The present disclosure provides a method to operate an internal combustion engine comprising storing a fueling command map having fueling index values, each of the fueling index values defining values for a plurality of fueling parameters, and a plurality of predetermined non-linear relationships that directly relate fueling index values to in-cylinder oxygen mass values; determining a temporary fueling index value; determining an in-cylinder oxygen mass value; identifying a predetermined relationship that directly relates fueling index values to in-cylinder oxygen mass values from the plurality of predetermined relationships to provide an identified predetermined relationship; determining that a current relationship of the temporary fueling index value to the calculated oxygen mass value differs from the identified predetermined relationship; and adjusting the temporary fueling index value using at least one fueling correction model to provide a revised fueling index value that approaches the identified pred

Abstract: Various systems and method for controlling exhaust gas recirculation in an internal combustion engine are provided. In one embodiment, a method for controlling an engine includes determining an actual intake oxygen concentration, adjusting a donor cylinder fuel injection amount to drive the actual intake oxygen concentration to a designated intake oxygen concentration, and adjusting a non-donor cylinder fuel injection amount dependent upon the donor cylinder fuel injection adjustment and to maintain a second operating parameter.

Abstract: An engine control system includes a power supply module, a measurement module, and a calibration module. The power supply module disables power supplied to N components of an engine when M cylinders of the engine are deactivated, wherein M and N are integers greater than or equal to one. The measurement module measures outputs of the N engine components. The calibration module calibrates the measurement module based on unpowered measurements from one or more of the N engine components during a period after the power supplied to the N components is disabled.

Abstract: A method for reducing a temperature of an engine component is disclosed. In one example, an air-fuel ratio provided to an engine is adjusted to reduce a temperature of an engine component. The approach may be useful for controlling temperature and emissions from a turbocharged engine.

Abstract: A traveling apparatus is provided. The traveling apparatus includes: a driver configured to independently drive two wheels disposed in parallel; a chassis configured to connect the two wheels; a detector provided in the chassis configured to detect a posture angle of the chassis, rotating speed of the two wheels being set respectively based on information on the detected posture angle; and an empty vehicle controller configured to control a posture of a vehicle to stand the vehicle independently in a state of no rider on board. The empty vehicle controller limits or controls the posture angle at the start of the posture control of the vehicle.

Abstract: A method for calibrating an engine control module includes sampling a first signal from a first oxygen sensor located upstream from a catalyst. The first signal indicates an oxygen content of exhaust gas produced by an engine. The method further includes predicting a response of a second oxygen sensor located downstream from the catalyst using a model of the catalyst and the first signal and sampling a second signal from the second oxygen sensor. The method further includes determining a component of the second signal based on a difference between samples of the second signal and the predicted response. The component is due to gases other than oxygen. Additionally, the method includes calibrating the engine control module based on the component of the second signal. The engine control module controls an amount of fuel injected into the engine.

Abstract: The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant, wherein a fuel mass flow outgassing from the engine oil is ascertained and is taken into account via a map-based pilot control during the metering of a quantity of fuel supplied to the internal combustion engine and wherein a fuel/air ratio supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for a mass flow offset determined from the deviation of the fuel/air ratio supplied to the internal combustion engine from a nominal value to be taken into account when the metering of the quantity of fuel supplied to the internal combustion engine occurs during an effective duration of the map-based pilot control.

Abstract: An internal combustion engine exhaust gas system includes a filter arranged in an exhaust passage of the internal combustion engine, a fuel adding valve which is arranged upstream of the filter and supplies fuel into the exhaust passage, and a low-pressure exhaust gas recirculation apparatus that removes some of the exhaust gas from downstream of the filter as EGR gas. An EGR rate is controlled taking into account the amount of fuel supplied by the fuel adding valve such that an oxygen concentration of intake gas, which is drawn into a cylinder of the internal combustion engine in a state in which the EGR gas that is introduced by the low-pressure exhaust gas recirculation apparatus is mixed with air introduced into an intake passage, is constant before and after fuel is supplied by the fuel adding valve.

Abstract: A control device for an internal combustion engine includes: an abnormality determination portion determining the presence of an abnormality in a fuel system, such as an injector, by comparing an air-fuel ratio detected by an A/F sensor and a learning value of the air-fuel ratio with a preset abnormality determination value; an alcohol concentration estimating portion estimating the alcohol concentration in fuel based on the air-fuel ratio detected by the A/F sensor and the learning value; and an abnormality determination value changing portion changing the abnormality determination value depending on the alcohol concentration estimated by the alcohol concentration estimating portion.

Abstract: An internal combustion engine has an exhaust gas tract with a first and a second exhaust gas catalyst downstream of the first one, a first exhaust gas sensor, which is disposed upstream or in the first catalyst, and a second exhaust gas sensor, which is disposed downstream of the first catalyst and upstream of the second catalyst. During trailing throttle operation, the measurement signal of the second sensor is monitored for a signal characteristic that is typical of a maximum possible saturation state with oxygen that the first catalyst can achieve, upon which a characteristic variable is determined for a saturation state of the second catalyst with oxygen as a function of an engine operating variable. Outside the trailing throttle operation, an enrichment mode is controlled by enriching the air/fuel mixture, specifically as a function of the characteristic variable for the saturation state of the second catalyst with oxygen.

Abstract: An air-fuel ratio control device of an internal combustion engine is provided. The control device includes a learning section, a correction section, and an inhibiting section. When an execution condition is met, the learning section learns, as a deviation amount learned value, a constant deviation amount between a correction amount and its reference value in different manners between a case in which the lift amount of the intake valve is in a first lift amount region used only when the execution condition is not met and a case in which the lift amount is in a second lift amount region used only when the execution condition is met. The learning section computes and stores the relationship between the deviation amount and the lift amount based on the deviation amount learned value. A correction section computes the deviation amount correction value from the stored relationship based on the lift amount, and corrects the fuel injection amount command value using the deviation amount correction value.

Abstract: A microprocessor controlled automated, multi-fuel apparatus to blend hydrogen, bio-fuel and/or natural or propane gases. This novel multi-stage apparatus first converts cooking oils into bio-fuel. The system automatically blends the bio-fuel with at least one of or both hydrogen gas, generated by a self-contained on-board hydrogen electrolyzer, and/or natural or propane gases. This blended “Hyenrich” gaseous fuel drives various processes including, but not limited to, cogeneration systems and electrical generators to produce “green” electricity by utilizing an adaptive and predictive learning algorithms to significantly reduce cost per kilowatt and lessen dependency on the over taxed utility grid, while simultaneously reducing emissions of CO, CO2 and NOx, making the method and apparatus an environmentally-friendly energy device.

Abstract: In an internal combustion engine control device having an air-fuel ratio control device that controls the fuel injection amount so that the air-fuel ratio of exhaust gas of an internal combustion engine approaches a target stoichiometric air-fuel ratio, the control device further includes a device that calculates the lower calorific value of fuel, and a device that sets the target stoichiometric air-fuel ratio from the calculated lower calorific value based on a known relationship between the lower calorific value and the stoichiometric air-fuel ratio. It becomes possible to perform the air-fuel ratio control according to the fuel property by utilizing the relationship between the calorific value and the stoichiometric air-fuel ratio.

Abstract: An internal combustion engine includes an exhaust system, an oxygen sensor in the exhaust system and a sensor malfunction monitor. In order to maintain operation during a fuel cut-off situation, the sensor malfunction monitor is arranged to control the fuel cut-off sequencing.

Abstract: A method for operating an internal combustion engine, in which at least one unwanted exhaust component is reduced, wherein a comparison value of an air ratio is determined and compared with an actual air ratio, and/or a comparison value of an oxygen fraction in an intake pipe is determined and compared with an actual oxygen fraction in the intake pipe, and wherein at least one correction variable is determined in accordance with a result of the comparison for the purpose of correcting at least one variable acting on the actual air ratio and/or the actual oxygen fraction in the intake pipe.

Abstract: A calibration method comprises: determining a steady-state (SS) delay period from a first mapping of SS delay period indexed by air per cylinder (APC); determining a predicted delay period based on first and second dynamic compensation variables; outputting a theoretical delay period based on a calibration APC; determining the theoretical delay period from a second mapping of theoretical delay period indexed by APC; generating the calibration APC; populating the first mapping based on the theoretical delay and the calibration APC; determining the first and second dynamic compensation variables based on comparisons of the theoretical delay and the SS delay period; and selectively adjusting an amount of fuel provided to the cylinder based on the predicted delay period.

Abstract: A telematics device coupled to vehicle onboard computer system calculates carbon dioxide output of the vehicle. The device uses inputs from existing vehicle performance and parameter sensors, such as speed, fuel efficiency, mass air flow and oxygen present in the vehicle's exhaust, to calculate carbon dioxide output. Speed divided by fuel efficiency results in gallons per hour. An emmission factor, EF, multiplied by the gallons per hour results in weight of carbon dioxide produced by the vehicle per hour. Dividing EF by the efficiency results in pounds per mile. Using input from the mass air flow and oxygen sensors, with an approximation of gasoline molecular weight may produce more accurate results without using EF. If the sensors do not provide values in the units needed, a calibration curve for the mass air flow sensor and oxygen sensor may be used. The telematics device can display the results or upload them.

Abstract: A sensor control apparatus includes an applied voltage control circuit connected to the positive terminal of a sensor element. The applied voltage control circuit includes a reference power supply and a noninverting amplifier circuit connected to the reference power supply. An AC power supply circuit, a buffer and a current measurement resistance are connected in series to the negative terminal of the sensor element with the current measurement resistance disposed between the AC power supply circuit and the sensor element. One terminal of the current measurement resistance, which is on the side opposite to the sensor element, is held at a reference voltage (center voltage of an AC voltage generated from the AC power supply circuit). Voltage at an intermediate point between the current measurement resistance and the sensor element is inputted via a low-pass filter to the noninverting amplifier circuit of the applied voltage control circuit.

Abstract: A method for estimating an oxygen concentration in an intake manifold of a diesel engine utilizing exhaust gas recirculation includes monitoring engine operation, monitoring an exhaust gas recirculation valve, and monitoring an exhaust air fuel ratio. When the engine operates in steady state with the exhaust gas recirculation valve in the closed position, a volumetric efficiency for the engine is updated. A partial pressure due to exhaust gas recirculation within the intake manifold based upon the updated volumetric efficiency is determined, and an estimated oxygen concentration within the intake manifold based upon the partial pressure due to exhaust gas recirculation within the intake manifold and the exhaust air fuel ratio is determined. Operation of the engine is controlled based upon the estimated oxygen concentration within the intake manifold.

Abstract: An amount of fuel injected into an internal combustion engine is controlled to adjust an air-fuel ratio. An air-fuel ratio sensor is disposed upstream of a three-way catalyst. An ammonia sensor is disposed downstream of the three-way catalyst. Main feedback control based on the air-fuel ratio sensor is performed such that the air-fuel ratio of exhaust gas becomes close to a target air-fuel ratio in the neighborhood of a stoichiometric air-fuel ratio. Sub-feedback control is performed on the basis of an output value of the ammonia sensor.

Abstract: A system includes a cylinder equivalence ratio (EQR) module, a location estimation module, a sensor module, and a fuel control module. The cylinder EQR module determines a first EQR corresponding to a first exhaust gas expelled from a first cylinder and determines a second EQR corresponding to a second exhaust gas expelled from a second cylinder. The location estimation module determines when the first and second exhaust gases mix in an exhaust manifold to form a third exhaust gas having a third EQR. The sensor module estimates an EQR of a fourth exhaust gas based on the third EQR. The fourth exhaust gas is located at an oxygen sensor in the exhaust manifold. The fuel control module controls an amount of fuel supplied to an engine based on a difference between the estimated EQR and an EQR corresponding to measurements from the oxygen sensor.

Abstract: Various systems and methods are described for controlling an engine in a vehicle in response to an equilibrium value of an exhaust gas constituent generated from an exhaust gas sensor. One example method comprises during engine fueling below a threshold amount where at least one intake valve and one exhaust valve of the engine are operating: generating an equilibrium value of an exhaust gas constituent reading of the exhaust gas sensor, the equilibrium value based on a trajectory of the exhaust gas constituent reading, and under selected engine combusting conditions, adjusting the sensor signal based on the equilibrium value.

Abstract: A degradation detector of an exhaust gas sensor is disclosed. The detector comprises a first heater resistance estimator (16) for estimating a resistance of a heater that heats the exhaust gas sensor, based on a device resistance of the exhaust gas sensor; a heater resistance calculator (17) for calculating a resistance of the heater, based on a heater current of the heater; and a degradation determiner (18) for determining whether the exhaust gas sensor is degraded, by comparing the estimated resistance of the heater and the calculated resistance of the heater.

Abstract: Disclosed is a diagnostic control apparatus for internal combustion engines capable of accurately diagnosing the presence and extent of air/fuel ratio variations in engine cylinders, even when the system has no part for detecting the air/fuel ratio in each cylinder. The diagnostic control apparatus measures the time required for the crankshaft to rotate to a specified angle for each cylinder; and based on this measured, required time, derives the 0.5 order component as the rotation fluctuation component for each two rotations of the crankshaft per each cylinder or the 1.0 order component as the rotation fluctuation component for each single rotation of the crankshaft; and also counts the number of times the 0.5 order component or 1.0 order component deviates from the preset range in the period set for each cylinder, and diagnoses an error in the output or in the air/fuel ratio for a particular cylinder when that count value exceeds a specified value.

Abstract: The invention relates to the field of methods and devices for reducing the difference between normalized air-fuel ratio of the various cylinders compared with a predetermined value between 0.7 and 1.1, of the normalized air-fuel ratio in an internal combustion engine. The method and devices utilize the signal of the ionization current produced by a suitable device, modifying the quantity of fuel on the basis of the signal determined by means of the method in question in the invention.

Abstract: Methods and devices for controlling the normalized air-fuel ratio of an internal combustion engine, otherwise known, in technical terms, as Lambda. The present invention is based on the use of the ionization current released by a device positioned on each cylinder of the engine. This ionization current is measured by a Control Unit equipped with a low-pass filter and electronic means which implement the invention.

Abstract: A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust gas recirculation (EGR) control on the engine. The amount of particulate matter in or loading of the filter may be determined by the upstream filter. The working condition of the filter may be determined by the downstream sensor. The filter may have a heater and control for providing operational and particulate matter burn-off temperatures to the filter. A processor may be connected to the sensors, the EGR control and the filter heater control.

Abstract: A method for adjusting an air-fuel ratio of an engine is disclosed. In one example, the engine air-fuel ratio is adjusted in response to a duty cycle and frequency of a post catalyst oxygen sensor. The method may improve catalyst efficiency.

Abstract: An oxygen storage capacity (OSC) monitoring system for a vehicle having a catalytic converter includes a control module that determines a measured OSC based on an inlet sensor signal (ISS) that is responsive to an oxygen content of exhaust flowing into the catalytic converter. The control module determines a normalization ratio based the measured OSC and determines a PASS/FAIL status of the catalytic converter based on the normalization ratio.

Abstract: A method for determining degradation of an exhaust gas sensor positioned in an exhaust system for an internal combustion engine of a vehicle is provided. The method includes sensor response durations to rich-to-lean and lean-to-rich transitions, as well as the symmetry of sensor response durations and delays to such transitions.

Abstract: A method for regulating the fuel/air ratio of a combustion process which is operated alternatingly with excess air and air deficiency, and having at least one catalyst volume in the exhaust gas of the combustion process which stores oxygen when there is excess oxygen in the exhaust gas and gives it off when there is oxygen deficiency, in which method the oxygen charges into the catalyst volume taking place when there is excess air, and the oxygen discharges from the catalyst volume taking place when there is air deficiency determined, and in which the fuel/air ratio is regulated in a first control loop such that the sum of the oxygen charges and oxygen discharges determined in a predefined interval takes on a predetermined value, wherein the combustion process is operated using oxygen excess or oxygen deficiency, respectively, at least until these appear at an oxygen-sensitive Nernst probe downstream from the catalyst volume.

Abstract: There is provided an air-fuel ratio sensor with which an improvement in the accuracy in detecting the air-fuel ratio of detection target gas and an improvement in the response characteristics can both be achieved. The sensor includes a sensor element that outputs an output signal indicative of the air-fuel ratio of a detection target gas, a pair of electrodes including a detection target gas side electrode to which the detection target gas is introduced and an atmosphere side electrode exposed to the atmosphere, which are arranged in such a way as to sandwich the sensor element, a diffusion-controlling layer that is disposed on the sensor element in such a way as to cover the detection target gas side electrode and introduces the detection target gas from an entrance portion through which the detection target gas flows in to the detection target gas side electrode, and a catalyst layer provided on a part of the entrance portion.

Abstract: An air-fuel ratio control apparatus includes a learning unit learning amounts of divergence of a correction amount from a reference value thereof respectively as to a plurality of set lift amount regions as divergence amount learning values, a correction unit calculating a divergence amount correction value and correcting a fuel injection amount command value, and a reflection unit reflecting a learning result of the divergence amount learning value of a specific one of the plurality of the set lift amount regions on the divergence amount learning value of another one of the lift amount regions when there is a history indicating that the divergence amount learning value of the specific one of the lift amount regions has been learned and there is no history indicating that the divergence amount learning value of that another one of the lift amount regions has been learned.

Abstract: A film forming apparatus which forms a film on a substrate by utilizing a chemical solution, including: a correlation data creating unit which creates a correlation data that is related to the quality of a chemical solution, from data that is related to the properties of the chemical solution including at least one of data on storage temperature for the chemical solution to be loaded and data on pressure applied to the chemical solution to be loaded; and a determining unit which determines whether or not the chemical solution holds expected quality thereof on the bases of the correlation data.

Abstract: The present disclosure provides a control system for a heating element used in an oxygen sensor. The control system comprises a rate module that periodically determines a rate of change of current through the heating element and a temperature adjustment module that periodically compares the rate of change and a rate value. The temperature adjustment module selectively adjusts an operating temperature of the oxygen sensor between a normal temperature and a remedial temperature lower than the normal temperature based on the comparison of the rate of change and the rate value. The present disclosure also provides a related control method for the heating element.

Abstract: A steady-state (SS) delay module determines a SS delay period for SS operating conditions based on an air per cylinder. A dynamic compensation module determines a predicted delay period based on first and second dynamic compensation variables for dynamic operating conditions, the SS delay period, a previous predicted delay period. The first dynamic compensation variable corresponds to a period between a first time when fuel is provided for a cylinder of an engine and a second time when exhaust gas resulting from combustion of the fuel and air is expelled from the cylinder. The SS and predicted delay periods correspond to a period between the first time and a third time when the exhaust gas reaches an exhaust gas oxygen sensor located upstream of a catalyst. A final equivalence ratio module adjusts fuel provided to the cylinder after the third time based on the predicted delay period.

Abstract: A method for operating a combustion machine, such as an internal combustion engine, has the following steps: provision of a combustion machine for producing thermal energy; operation of the combustion machine, and thereby burning fuel to obtain the thermal energy; detection of the concentration of at least one pollutant, which is produced during the combustion, in the surroundings of the combustion machine; regulation of the operation of the combustion machine, in which a characteristic variable of the combustion machine is set according to the detected concentration in such a way that the emission of the pollutant is reduced.

Abstract: In the calibration of a lambda sensor (26), inaccuracies occur during a fuel cut-off overrun phase depending on the temperature. A method is proposed for correcting an output signal of a lambda sensor (16) of an internal combustion engine (1), having the following steps: detection of a fuel cut-off overrun phase of the internal combustion engine (1), sensing of an exhaust-gas composition by the lambda sensor (16) during the fuel cut-off overrun phase, sensing of a temperature which represents a measure of the intake air of the internal combustion engine (1), calibration of the lambda sensor (16) based on the second temperature.

Abstract: Method to detect a faulty operating condition during a cylinder cutoff of an internal combustion engine with at least two cylinder banks, wherein the internal combustion engine comprises in each case a separate mechanism to determine the Lambda value of the combustion for each cylinder bank. When the Lambda values of the cylinder banks change in opposite directions, a faulty cylinder cutoff is suggested.

Abstract: A method of controlling an HCCI engine-based power system may include receiving performance information relating to a desired operating state for the HCCI engine-based power system, evaluating operational information associated with a current operating state of the HCCI engine-based power system, and determining one or more control parameter values based on the performance information and the operational information. The method may further include predicting a response of the HCCI engine-based power system based on the one or more control parameter values and determining whether the response satisfies one or more desired performance characteristics associated with the HCCI engine-based power system. If the response satisfies the one or more desired performance characteristics, control of at least one component of the HCCI engine-based power system may be enabled based on the one or more control parameter values.

Abstract: A system includes a controller configured to estimate a brake specific nitrogen oxide emission of an engine based on a plurality of sensed parameters of the engine. The controller is also configured to control one or more control variables of the engine to reduce specific fuel consumption while ensuring compliance of brake specific nitrogen oxide emissions within predetermined limits.

Abstract: With an internal combustion engine (1) there is the problem that the fuel-air mixture directed into the combustion chamber of the cylinders (2) can be substantially influenced by manufacturing tolerances and ageing of the fuel injectors and uneven distribution is thus created. The uneven distribution is individually determined for each cylinder (2) depending on the operating mode of the internal combustion engine (1) (homogenous operation, stratified operation), wherein either the exhaust gas is analyzed and a corresponding emission value is determined therefrom or that a value is individually determined for each cylinder (2) for the operational roughness of the internal combustion engine (1). These values are compared with a limit value predetermined for the internal combustion engine (1) and upon exceeding of the predetermined limit value a fault entry in a fault memory (9) is made for the cylinder (2) concerned.

Abstract: An engine control system includes an oxygen (O2) sensor diagnostic module that diagnoses an O2 sensor and requests a minimum air per cylinder (APC). A throttle actuator module controls a throttle to adjust a mass air flow based on the minimum APC.

Abstract: A system for an internal combustion engine of a vehicle is disclosed. In one example, characteristics of an oxygen sensor are a basis for determining degradation of a temperature sensor. In this way, the system can provide redundant exhaust gas temperature sensing.

Abstract: An oxygen sensor device and method for a motor vehicle having an electrode within an outer shell for measuring oxygen in exhaust gas exiting the vehicle. A communication device, powered by a capacitor, wirelessly transmits the measured amount of oxygen from the electrode to a powertrain control module. Vibration transmitting from the motor vehicle shakes a magnet, wound inside a coil, for generating the electrical current used by the capacitor.

Abstract: An oxygen sensor for a motor vehicle having an electrode within an outer shell measures oxygen in exhaust gas exiting the vehicle and generates a signal based on the oxygen measurement. A communication device, powered by a battery or capacitor, wirelessly transmits the measured amount of oxygen from the electrode to a powertrain control module. The flow of exhaust gas through the exhaust system spins blades to spin a generator in a rotational power generation device to generate electrical current to be stored and used by the battery or capacitor. The rotational power generation device may be located in the exhaust pipe, such as through an exhaust pipe wall, and either be connected to the oxygen sensor shell or separate and connected only with electrical wires between the generator and the battery or capacitor.