Method and device to adjust firing point

FIELD: engines and pumps.

SUBSTANCE: in compliance with proposed method, final firing point is calculated by adding variable component to preset firing point. Average virtual indicating value of cylinder pressure, adjusted in firing, is calculated for final firing point. Firing point characteristic curve, defining relationship between average virtual indicating pressure and variable component, obtained, optimum firing point is calculated from aforesaid curve. As a result, firing point corresponds to optimum firing point fur current operating conditions of engine.

EFFECT: higher accuracy of determining optimum firing point.

14 cl, 20 dwg

 

The text descriptions are given in facsimile form.

1. A device for controlling the ignition timing of the engine, comprising:
counting is a crucial device for calculating the ignition timing used to add a variable component to the specified timing and calculation of the final ignition timing of the engine; calculating a crucial device for calculating the mean effective pressure, which is used to calculate the average effective pressure in the cylinder, registered in the momen the end plug;
counting is a crucial device with a minimum advance for the best torque to obtain the characteristic curve of the ignition point, which defines the relationship between the average effective pressure and a variable component, and determine the optimal timing characteristic curve; and
a controller for regulating a given moment of ignition and ensure the convergence of the specified ignition timing to the optimum ignition timing.

2. The device according to claim 1,
in which the characteristic curve is expressed by a function having as an input parameter variable component, and as an output parameter the mean effective pressure indicator;
in which counting is a crucial device with a minimum advance for the best torque contains the ID of the coefficients related to the variable component in the mean effective pressure indicator, calculated by calculating a casting device for calculating the mean effective pressure and obtain the characteristic curve based on the results of identification of the coefficients.

3. The device according to claim 2, comprising a generator for generating a variable component, in which the generator generates a variable component in the self-excitation mode for the automatically recognized coefficients of the function.

4. The device according to claim 2, in which the identifier provides: definition of the modified components of the coefficients in such a way as to obtain the convergence to zero the deviation between the average effective pressure indicator, calculated by calculating a casting device for calculating the mean effective pressure, and average estimated effective indicator pressure obtained with the function;
populate components to predetermined reference values to determine the coefficients and obtain convergence to zero error between the coefficients and reference values; and in which the reference values are set so that the regulatory process of convergence of a given timing to the optimum ignition timing stops when the coefficients converge to the reference value.

5. The device according to claim 2, in which at least one factor introduces a restriction that prevents the emergence of the characteristic curve convexity pointing down.

6. The device according to claim 1, in which the counting is a crucial device for calculating the mean effective pressure provides the allocation of the variable component of the pressure registered in the cylinder, and calculating the mean effective pressure indicator with regard to the variable component.

7. The device according to claim 1,in which the mode control task reaction characteristics specified ignition timing to the optimum ignition timing.

8. Method of control of ignition timing, which includes the following steps:
(a) add a variable component to the specified timing for calculation of the final ignition timing of the engine;
(b) calculate the average effective indicator of the pressure in the cylinder, registered, when ignition occurs at the final moment of ignition;
(c) obtaining a characteristic curve of the ignition point, which defines the relationship between the average effective pressure indicator and a variable component;
(d) determining the optimum timing on the characteristic curve and
(e) regulation specified timing to obtain convergence to the optimum ignition timing.

9. The method of claim 8,
in which the characteristic curve of the ignition timing is expressed by a function having as an input parameter variable component, and as an output parameter the mean effective pressure indicator;
in which step (C) includes the step of: (c1) identifying factors related to the variable component in the mean effective pressure indicator, to obtain a characteristic curve with regard to the identification of the coefficients.

10. The method according to claim 9, in which carry out the step of generating the variable component that meets the conditions for self-excitation and is entifically coefficients of the function.

11. The method according to claim 9, in which step (c1) includes the steps:
define the changed components of the coefficients in such a way as to ensure the convergence to zero the deviation between the average effective pressure indicator, calculated in step (b), and average estimated effective indicator pressure obtained with the function;
populate components to predetermined reference values to determine coefficients and obtain convergence to zero error between the coefficients and reference values;
in which the reference values are set so that the regulatory process of convergence of a given timing to the optimum ignition timing is stopped when the convergence of the coefficients to the reference values.

12. The method according to claim 9, containing the stage: introduction of restrictions, at least for one of the factors which helps prevent obtaining the characteristic curve with the convexity pointing down.

13. The method according to claim 8, in which step (b) includes the steps:
the selection of the variable component of the pressure registered in the cylinder; and calculating the mean effective pressure indicator with regard to the variable component.

14. The method according to claim 8, in which step (e) includes the step: application of the regulatory regime with the job data for the reaction given moment the ignition is on, the optimum ignition timing.



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: engine comprises the following components: nozzle for direct injection; nozzle for injection of fuel into inlet channels; unit for determination of engine operation mode intended for detection of engine operation mode; unit for control of injected fuel amount intended for tracking of engine operation mode and control of according amount of fuel injected from nozzle for direct injection and nozzle for fuel injection into inlet channels, depending on mode of engine operation; memory unit with inbuilt four tables of ignition dwell angle cards, including the first card of ignition dwell angle. The first card of ignition dwell angle is made based on engine operation mode so that ignition dwell angle during fuel injection with application of only nozzle for direct injection actually corresponds to moment for creation of maximum torque. The second card of ignition dwell card is made based on engine operation mode so that ignition dwell angle during fuel injection with application of only nozzle for direct injection actually corresponds to moment of torque creation at the border of detonation. The third card of ignition dwell angle is made based on engine operation mode so that ignition dwell angle during injection of fuel with application of only nozzle for fuel injection into inlet channels actually corresponds to moment of maximum torque creation. The fourth card of ignition dwell angle is made based on mode of engine operation so that ignition dwell angle during fuel injection with application of only nozzle for fuel injection into inlet channels actually corresponds to moment for creation of torque at the border of detonation. Unit for control of ignition dwell angle is intended for control of cylinder ignition moment, using ratio of fuel amount injected by nozzle for direct injection and nozzle for fuel injection into inlet channels, and four tables of ignition dwell angle cards.

EFFECT: invention makes it possible to prevent detonation in internal combustion engine by simple method.

5 cl, 11 dwg

Ice control device // 2350776

FIELD: engines and pumps.

SUBSTANCE: engine electronic control unit executes program allowing computation of following magnitudes, i.e. fuel injection ratios of the injector fitted in the cylinder (S100), ignition advance with the help of the first card used when the injector fitted inside the cylinder features the fuel injection ratio equals 1. Note here that the first card ensures ignition the (S220), ignition advance with the help of the second card used for the fuel injection ratio that equals zero. Note that the second card ensures ignition time with the minimum advance (S230) and ignition advance with the help of the third card used for fuel injection ratio exceeding zero but smaller than unity. Note that the third card ensures ignition time with higher ignition advance for larger value of ratio (S240).

EFFECT: control device for ICE comprising first and second fuel injection mechanisms participating together in injecting fuel into cylinder and intake manifold and allowing accurate computation of ignition time.

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FIELD: mechanical engineering; internal combustion engines.

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EFFECT: improved efficiency of discrimination of signals caused by knocking.

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The invention relates to a method and apparatus control the detonation of the internal combustion engine (ice)

The invention relates to a method of eliminating detonation knocking in the internal combustion engine (ice) when in dynamic mode

The invention relates to a method for controlling operation of the internal combustion engine (ice), as well as to the corresponding device control operation of internal combustion engine

The invention relates to a method of job control ignition values in the internal combustion engine is in the acceleration mode

The invention relates to a device for suppressing detonation in internal combustion engines

FIELD: methods of correction of angular error of absolute angular position sensor recording angular position of first shaft whose rotary motion is interrelated with rotation of second shaft.

SUBSTANCE: proposed method may be used for determination of angular position of internal combustion engine camshaft. Angular position sensor is just absolute angular position sensor. First angular position of second shaft is recorded during complete revolution of first shaft and angular position of first shaft is determined on basis of measurement. Then, respective output magnitude of absolute angular position sensor is compared with respective angular position of first shaft at retained misalignment obtained in the course of comparison. Then, each output magnitude of absolute angular position sensor is corrected for respective retained magnitude.

EFFECT: possibility of compensating angular error of absolute angular position sensor.

4 cl, 4 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention is aimed at increasing efficiency of discrimination of signals caused by knocking in internal combustion engine from signals caused by other noises in engine. Method is implemented by means of at least one detonation combustion sensor and signal processing unit installed after detonation combustion sensor and provided with at least one comparator. Output signal from detonation combustion sensor is compared after processing by comparator with variable reference value of level formed basing on preceding output signals of said combustion detonation sensor. Reference value of level passes into comparator through low-pass filter, and comparator indicates presence or absence of knocking basing on results of comparing. Tracking of reference value of level or calculation of value of input signal of low-pass filter are carried out at least by two different methods. Method is chosen depending on presence or absence of dynamic mode of engine operation.

EFFECT: improved efficiency of discrimination of signals caused by knocking.

5 cl, 6 dwg

Ice control device // 2350776

FIELD: engines and pumps.

SUBSTANCE: engine electronic control unit executes program allowing computation of following magnitudes, i.e. fuel injection ratios of the injector fitted in the cylinder (S100), ignition advance with the help of the first card used when the injector fitted inside the cylinder features the fuel injection ratio equals 1. Note here that the first card ensures ignition the (S220), ignition advance with the help of the second card used for the fuel injection ratio that equals zero. Note that the second card ensures ignition time with the minimum advance (S230) and ignition advance with the help of the third card used for fuel injection ratio exceeding zero but smaller than unity. Note that the third card ensures ignition time with higher ignition advance for larger value of ratio (S240).

EFFECT: control device for ICE comprising first and second fuel injection mechanisms participating together in injecting fuel into cylinder and intake manifold and allowing accurate computation of ignition time.

5 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: engine comprises the following components: nozzle for direct injection; nozzle for injection of fuel into inlet channels; unit for determination of engine operation mode intended for detection of engine operation mode; unit for control of injected fuel amount intended for tracking of engine operation mode and control of according amount of fuel injected from nozzle for direct injection and nozzle for fuel injection into inlet channels, depending on mode of engine operation; memory unit with inbuilt four tables of ignition dwell angle cards, including the first card of ignition dwell angle. The first card of ignition dwell angle is made based on engine operation mode so that ignition dwell angle during fuel injection with application of only nozzle for direct injection actually corresponds to moment for creation of maximum torque. The second card of ignition dwell card is made based on engine operation mode so that ignition dwell angle during fuel injection with application of only nozzle for direct injection actually corresponds to moment of torque creation at the border of detonation. The third card of ignition dwell angle is made based on engine operation mode so that ignition dwell angle during injection of fuel with application of only nozzle for fuel injection into inlet channels actually corresponds to moment of maximum torque creation. The fourth card of ignition dwell angle is made based on mode of engine operation so that ignition dwell angle during fuel injection with application of only nozzle for fuel injection into inlet channels actually corresponds to moment for creation of torque at the border of detonation. Unit for control of ignition dwell angle is intended for control of cylinder ignition moment, using ratio of fuel amount injected by nozzle for direct injection and nozzle for fuel injection into inlet channels, and four tables of ignition dwell angle cards.

EFFECT: invention makes it possible to prevent detonation in internal combustion engine by simple method.

5 cl, 11 dwg

FIELD: engines and pumps.

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EFFECT: higher accuracy of determining optimum firing point.

14 cl, 20 dwg

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3 dwg

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8 cl, 5 dwg

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