Motorola Corporation

Continental Automotive Systems Corporation

Temic Automotive of North America, Inc.

Other

Marvin L Lynch

Donald J Remboski

Michael A McClish

Steven L Plee

Alan J Chewter

Gregory Steinl

Susan K Sonday

Margaret A Selfe

Ningsheng Qiao

Darren A Schumacher

Richard John Gilbert

Ninsheng Qiao

Robert W Deutsch

Donald J Remboski, Jr

David Frankowski

Donald Peter Kultgen

Keith Gerlach

Karen Skalny

Jeff Naber

Jack Szpytman

Louis Liu

Gregory A Feucht

Matthew H Henry

Christopher D DeSalvo

A system and method for selecting a fueling station for vehicle refueling, including receiving fuel information from a remote device corresponding to one or more fueling stations near a vehicle; upon the vehicle travelling to a selected one of the one or more fueling stations, setting a flag to a value based upon a fuel grade of fuel used to refuel the vehicle at the selected one of the one or more fueling stations; and capturing location information for at least one of the vehicle and the selected one of the one or more fueling stations. Subsequent to refueling at the selected one of the one or more fueling stations, the method further includes determining fuel information of the fuel used to refuel the vehicle; and sending the flag, the fuel information of the fuel used to refuel the vehicle, and the captured location information to the remote device.

Cloud-based fuel quality recording and fuel station selection system, and method of utilizing same

A method for detecting an opening time of a valve, includes receiving a valve current profile of the valve and processing the valve current profile using at least a slope reflection detector to determine a status of the valve based on an output of the slope reflection detector.

Method and apparatus for detecting selective catalytic reduction injector opening time

A method and system for determining combustion and harmonic noise correction factors for current operating conditions corresponding to the actual vehicle and applying the combustion and harmonic noise correction factors to a sensor signal, thereby removing engine combustion and harmonic noise from the sensor signal and leaving a misfire data signal in the sensor signal.

Method to reduce engine combustion and harmonic noise for misfire detection

A method of operating an engine includes determining at least one characteristic of rough road performance based on at least one driveline characteristic and receiving crankshaft acceleration data. The method further includes comparing the received crankshaft acceleration data and determined characteristic, inhibiting the misfire counter based on the comparison, and operating the engine based on the disabled misfire detection.

Method and system for rough road indications for misfire detection

A method for determining a misfire condition includes receiving crankshaft acceleration data. The method further includes routing the received data through at least one of a plurality of processing paths and through a startup path and determining a crankshaft revolution count. The method further includes comparing the determined crankshaft accelerations over the determined revolution count to at least one threshold crankshaft acceleration value over the determined revolution count and determining a misfire condition from one of the startup path and the processing path based on the comparison.

Method and system for misfire detection

A method and system for identifying a phase in an internal combustion engine () is disclosed. The internal combustion engine may include an even number of cylinders and is fitted with at least one sensor. In one embodiment, the method includes measuring a state of the internal combustion engine using the at least one sensor. The method may further include calculating a deviation of the state from an expected set of values, and determining the phase of the internal combustion engine, based on the deviation.

Method and system for identifying phase in an internal combustion engine

A system and method of detecting a leak in an evaporative emissions system for a vehicle includes measuring a physical disturbance of the vehicle with a sensory system and providing a sensory signal (311, 313, 315). Then, comparing the sensory signal (311, 313, 315) to a threshold (405) and generating a diagnosis signal (407, 413) having a 'valid test' state, when the sensory signal does not exceed the threshold, and generating the diagnosis signal having an 'invalid test' state, when the sensory signal exceeds the threshold. And, executing an evaporative emissions system leak test while the provided diagnosis signal indicates the 'valid test' state, and aborting the evaporative emissions system leak test (505) when the diagnosis signal indicates the 'invalid test' state.

Evaporative emissions leak detection system and method utilizing

A method and system of misfire determination includes establishing an acceleration misfire threshold and an acceleration sub-misfire threshold. Then incremental engine position is sensed and a series of acceleration data-points are derived (401). If a data-point of the series of acceleration data-points falls between the sub-misfire threshold and the misfire threshold, then a training process is aborted for a blanking period based on a delay time whose length is preferably based on engine operating conditions (415). If a data-point of the series of acceleration data-points does not fall below the sub-misfire threshold, then the series of acceleration data-points, are averaged and a synchronously corrected acceleration data-point is derived (417). Then, a misfire condition is indicated when the synchronously corrected acceleration data-point exceeds the established acceleration misfire threshold (421).

Method and system for misfire determination using synchronous correction

A modified trimmed mean filtering method and apparatus for a misfire detection includes acquiring a time-continuous series of acceleration data samples (601) representative of acceleration behavior of a reciprocating engine. And, providing a filtered acceleration data sample (607) dependent on an average acceleration magnitude of a portion of the acceleration data samples bounded within a range of amplitudes and, preferably, a time-centered acceleration data sample (606) of the fixed length time-continuous series of acceleration data samples. A misfire condition can be indicated (409) dependent on a magnitude of the filtered acceleration data sample.

Modified trimmed mean filtering for misfire detection

A misfire detection method and apparatus includes measurement of combustion induced torque in an internal combustion engine and provision of time-ordered first, second, and third acceleration data samples dependent on the torque. A misfire is indicated when a magnitude of the second acceleration data sample has a magnitude less than a misfire threshold, and less than a magnitude of both the first and third acceleration data samples.

Misfire detection method and apparatus

A method and system of combustion control for an internal combustion engine (313) proximate an extinction limit includes measurement of acceleration behavior of the internal combustion engine and providing a measure of combustion variability dependent thereon. Preferably, the combustion variability measure is derived by one or more stochastically based methods (607). Operation of the internal combustion engine (313) is controlled dependent on the combustion variability measurement. Fuel, ignition, and exhaust gas recirculation may all be controlled by the derived combustion variability measurement to significantly reduce hydrocarbon (HC) and NO.sub.x emissions.

Combustion control of an internal combustion engine proximate an

A method, and a corresponding system, for determining misfire in a reciprocating engine measures engine crankshaft angular velocity and provides an angular velocity signal as measured from the engine crankshaft (403). A filtered acceleration signal, dependent on the engine crankshaft angular velocity signal and independent of normal combustion information and other high-order effects is provided via filtering (405). When the filtered acceleration signal exceeds a threshold dependent on at least one of the following; engine speed, engine load, or engine temperature (711), a misfire is indicated. Preferably, prior to the misfire determination, the filtered acceleration signal (701) is sampled over a first period of engine crankshaft rotation to provide a first data point (703), over a second period of engine crankshaft rotation to provide a second data point (707), and over a third period of engine crankshaft rotation to provide a third data point (705). Then, an average of the first and third data points is subtracted from the second data point and a combined acceleration signal is provided (511). Then, a misfire is indicated (517) when the combined acceleration signal exceeds the threshold (513). Preferably, this sampling of the filtered acceleration signal is continuous, and the sampling of the first, second and third data points is separated by two engine crankshaft rotations.

Pattern recognition method and system for determining a misfire

A method for detrending engine positional data includes acquiring positional encoder data over a plurality of consecutive engine revolutions as the engine is decelerating. Then, a trend (207) in the acquired positional encoder data consistent with behavior occurring at less than a frequency of one cycle per engine revolution is identified. Next, corrected positional encoder data (208) is generated dependent on removing the identified trend (207).

Detrending engine positional data for rotating position encoders

A misfire detection system and method measures fluctuations of air charge ingested into an engine 303, preferably as fluctuations of the engine's intake air pressure or as fluctuations of the mass air flow. A misfire indication 337 is provided dependent on a behavior of the fluctuations of air charge. Preferably, to eliminate errors associated with engine transient operating conditions, such as acceleration, the fluctuations of air charge are differentiated 325 before a misfire detection mechanism 333 is used to determine misfire behavior.

Misfire detection dependent on intake air charge fluctuations

A method and apparatus for adaptive profile correction for rotating position encoders in reciprocating engines measures a raw engine speed derived from a rotating position encoder (107) driven by a reciprocating engine. A first corrected engine speed (1103) is provided dependent on the raw engine speed and a predetermined first encoder profile while the engine is operating bounded within a first speed range (905), and a second corrected engine speed (1103) is provided dependent on the raw engine speed and a predetermined second encoder profile while the engine is operating bounded within a second speed range (913).

Growing community of inventors

Detroit, MI, United States of America

Marvin L Lynch