TH75652B - Method for estimating the alcohol concentration of gasohol fuel. For internal combustion engines that ignite with a spark - Google Patents

Abstract

DC60 This invention is a method of estimating the proportions of two fuel mixtures or fuel concentrations based on the readings from the various probes available in conventional gasohol vehicles. Fuel concentration The work will start only when Engine operating conditions: automotive speed, engine speed, relative air-fuel ratio, is constant and within the specified range. Estimation of fuel concentration on the basis of relative tables With reference fuel injection period, current fuel injection period, engine speed, intake flow rate, intake pressure, throttle angle and is compensated on the basis of intake temperature, this invention is a method. Estimates the proportion of two types of fuel or fuel concentration based on the readings from the various probes available in conventional gasohol vehicles, not equipped with probes Fuel concentration The work will start only when Engine operating conditions such as motor speed, engine response speed, relative air-fuel ratio, are constant and within the specified range. Estimation of fuel concentration on the basis of relative tables With reference fuel injection period, current fuel injection period, engine speed, intake flow rate, intake pressure, throttle angle and are offset on the basis of intake temperature.

Claims (8)

Disclaimer (all) which will not appear on the advertisement page: Revised Sept. 14, 2018. Claims 1. Method for estimating the alcohol concentration of gasohol. For engine Internal combustion that ignites with a spark That consists of the procedure - readings of the engine performance (100) from the measuring sensor device Engine work To convert it into an electrical signal showing the working state of Engine for engine control (119) connected to the sensor device - Calculation of the alcohol-to-total fuel concentration in the estimation for the engine control segment (119) - signal processing from the measuring equipment and the fuel concentration of The engine to signal the period of fuel injection for the injectors as well Engine control section (119) whereby a method for estimating the proportion of fuel It is unique to the calculation of the alcohol concentration to all gasohol fuels (301) using a linear intersection intersection method at the intersection of the grid. (Interpolation) or the use of a neural network (501) consisting of variable calculations. Engine load (LOAD) (701) and use of the difference (dDf) (304) between the current fuel injection period (DF) (101) and the gas injection period. Total SOHO (DFEO) (203) with initial conditions of work consisting of Calculate the constant speed of vehicle speed variables, engine speed and air-to-fuel ratio. ++++++++++++++++++ 1. Method for estimation of the alcohol concentration in gasohol fuel For engine Internal combustion that ignites with a spark That contains the steps of (formula) to read the engine operation (100) from the measuring sensor device Engine work To convert it into an electrical signal showing the working state of Engine for engine control (119) connected to a sensor device For the processing (formula) the calculation of the alcohol-to-total fuel concentration in the estimation for the engine control unit (119) (formula) signal processing from the measuring device and the fuel concentration of The engine to signal the period of fuel injection for the injectors as well Engine control section (119) whereby a method for estimating the proportion of fuel It is unique to the calculation of the alcohol concentration to all gasohol fuels (301) using a linear intersection intersection method at the intersection of the grid. (Interpolation) or the use of a neural network (501) consisting of variable calculations. Engine load (LOAD) (701) and use of the difference (dDf) (304) between the current fuel injection period (DF) (101) and the gas injection period. Reference solvent (DFEO) (203) with the initial condition of the calculation composed. Constant speed of variable vehicle speed, engine speed and relative air-to-fuel ratio 2. Method for estimation of the alcohol concentration in gasohol fuel For engine The internal combustion spark ignited in accordance with claim 1, where the vehicle speed (SPEED) or rev speed (RPM) or relative air-fuel ratio (LAMBDA) determines the steady state, which is done on the basis of Calculating the mean deviation 3. Method for estimation of the alcohol concentration in gasohol fuel For engine Internal combustion ignited by a spark in accordance with claim 1, wherein the concentration of Alcohol based on total gasohol fuels (401) based on estimation. Method for approximating the middle value at intersection on the grid with linear method. (Interpolation) consisting of the engine load factor (LOAD) (701) and the difference (dDF) (304) between the current fuel injection period (DF) (101) and the fuel injection period. Gasohol Reference (DFEO) (203) 4. Method for estimation of the alcohol concentration of gasohol for engines Internal combustion ignited by a spark in accordance with claim 1, wherein the concentration of Alcohol based on total gasohol fuel (501) based on neural network. Artificial that contains early variables including Engine speed (RPM) (111), engine load (LOAD) (701) and difference (dDF) (304) during the injection period. Current Fuel (DF) (101) with Reference Gasohol Injection Period (DFEO) (203) 5. Method of estimation of alcohol concentration in gasohol fuel for engines. Internal combustion spark ignited in accordance with either of the 2nd or 3rd proposition, whereby Engine load (LOAD) calculations (701) are made on the basis of Air Flow Rate (AFS). 6. Method for estimation of the alcohol concentration of gasohol for engines Internal combustion spark ignited in accordance with either of the 2nd or 3rd proposition, whereby Calculate the engine load LOAD (701) on the basis of interpolation at interpolation at the interpolation point on Table (801) containing the initial variables, such as the throttle opening angle, TPS (108) and rpm. Engine RPM (111) 7. Method for estimation of alcohol concentration in gasohol for engines Internal combustion spark ignited in accordance with either of the 2nd or 3rd proposition, whereby Calculate the load of the engine LOAD (701) on the basis of linear interpolation. (interpolation) at the intersection point on the table (901) containing the initial variables, namely MAP intake air pressure (109) and engine speed RPM (111). 8. Method for estimation of the alcohol concentration of gasohol for engines. Internal combustion spark ignited in accordance with either of the 2nd or 3rd proposition, whereby Engine load is calculated. LOAD (701) consists of compensation with MAT (122) intake temperature on the basis of linear approximation. (interpolation) at the intersection on the table (1001) containing the MAT (122) intake temperature source variable.