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Data Processing: Vehicles, Navigation, And Relative Location > Vehicle Control, Guidance, Operation, Or Indication > With Indicator Or Control Of Power Plant (e.g., Performance) > Internal-combustion Engine > Digital Or Programmed Data Processor > Control Of Air/fuel Ratio Or Fuel Injection > Detection Of O2 Concentration Detection Of O2 ConcentrationDetection Of O2 Concentration patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/30/06 - 20060271271 - Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an adaptive nonlinear filter The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the fuel/air ratio of the exhaust gas. An estimator based on an adaptive nonlinear filter is coupled with a physical model ... 11/30/06 - 20060271270 - Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an extended kalman filter The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the fuel/air ratio of the exhaust gas. An estimator based on a Kalman filter is coupled with a physical model representing ... 11/23/06 - 20060265116 - Abnormality diagnosis device for air-fuel ratio sensor When carrying out abnormality determination for an air-fuel ratio sensor 33 by comparison of an average value tave of all diagnostic values t(n) and an abnormality determination value C, the abnormality determination value C is corrected using an average value Δtave for the disturbance correction values Δt(n). A disturbance correction ... 10/26/06 - 20060241850 - Method and device for estimating a nitrogen oxide mass stored in a catalytic trapping device of a motor vehicle The invention relates to a method of estimating a nitrogen oxide mass stored in a catalytic nitrogen oxide trapping device (1) which comprises a catalytic phase and which is traversed by the exhaust gases (2) from the internal combustion engine (3) of a motor vehicle (4) comprising an electronic control ... 10/19/06 - 20060235604 - Method of feedforward controlling a multi-cylinder internal combustion engine and associated feedforward fuel injection control system The amount of fuel to be injected in each cylinder of a multi-cylinder spark ignition internal combustion engine may be determined with enhanced precision if the fuel injection durations are determined as a function of the sensed mass air flow in all the cylinders of the engine, instead of considering ... 09/21/06 - 20060212210 - Method of controlling elements used to execute elementary functions of an internal combustion engine A method of controlling elements used to execute the elementary functions of internal combustion engines. The method controls the elements using measurement signals provided by sensors, determines theoretical signals that have to be provided by reference sensors at a current operating point of the engine, determines deviations between the theoretical ... 08/24/06 - 20060190159 - Diagnosis apparatus for internal combustion engine In a diagnosis apparatus for an internal combustion engine which determines the abnormality of a linear A/F sensor which is disposed on the upstream side of a catalyst of the engine and detects the A/F of exhaust gas, the apparatus includes a response/gain deterioration detection unit that separately detects the ... 06/01/06 - 20060116811 - System The present invention provides an onboard system for determining vehicle emissions. The emissions are determined in real-time and may be transmitted to a remote terminal for storage and/or analysis. Date is supplied solely to an emissions unit from a vehicle diagnostic system: the vehicle diagnostic system receives vehicle data from ... 01/12/06 - 20060009903 - Fuel properties estimation for internal combustion engine Fuel properties estimating apparatus for an internal combustion engine includes a controller to determine an estimated component concentration of a component in a fuel. The controller calculates an air-fuel correction quantity in accordance with an actual air fuel ratio of the engine; and calculates an air-fuel ratio sensitivity correction quantity ... 09/29/05 - 20050216175 - Device for detecting response characteristics of sensor When the output of the AFR ratio sensor is stable in a steady operating state, the amount of fuel is increased by step inputting to detect a point where the gradient of change in the sensor output exceeds a threshold value as a point of start of change. The time ... ### FreshPatents.com Support |