WO2004013479A1 - エンジン制御装置 - Google Patents
エンジン制御装置 Download PDFInfo
- Publication number
- WO2004013479A1 WO2004013479A1 PCT/JP2003/004665 JP0304665W WO2004013479A1 WO 2004013479 A1 WO2004013479 A1 WO 2004013479A1 JP 0304665 W JP0304665 W JP 0304665W WO 2004013479 A1 WO2004013479 A1 WO 2004013479A1
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- WIPO (PCT)
- Prior art keywords
- crank
- crankshaft
- detecting
- detected
- phase
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0402—Engine intake system parameters the parameter being determined by using a model of the engine intake or its components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0414—Air temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
Definitions
- the present invention relates to an engine control device for controlling an engine, and is particularly suitable for controlling an engine having a fuel injection device for injecting fuel.
- Hei 10-227252 proposes an engine control device that detects a phase state of a crankshaft and an intake pressure and detects a stroke state of a cylinder based on the phase state and the intake pressure. Therefore, by using this conventional technique, it is possible to detect the stroke state without detecting the phase of the camshaft, and it is possible to control the fuel injection timing and the like in accordance with the stroke state.
- the phase of the crankshaft described above is such that, for example, teeth are formed at equal intervals on the outer periphery of the crankshaft itself or a member which rotates synchronously with the crankshaft, and irregularly-spaced portions are partially formed.
- a crank pulse is generated by crank pulse generating means such as a magnetic sensor, and a specific rotational position of the crankshaft corresponding to the unequally-spaced portion of the tooth is detected from the state of the crank pulse.
- the rotation angle of the crankshaft that is, the phase can be detected from the number of crank pulses from a specific rotation position of the rotor.
- a proper crank pulse may not be generated.
- crank pulse generating means such as a magnetic sensor.
- the crank pulse originally converts a continuously changing current value, such as a sine wave, into an ON / OFF signal at a predetermined value.For example, if the sensor is too close to the teeth / Alternatively, if the off-portion is eliminated and the sensor is too far from the teeth, the pulse is short or the on-portion is eliminated. Conventionally, there is no specific method for detecting the abnormality of the crank pulse generating means.
- the present invention has been developed to solve the above-mentioned problems, and has as its object to provide an engine control device capable of reliably detecting an abnormality of a crank pulse generating means. Disclosure of the invention
- the engine control device is a crank / less generating means for transmitting a / loose signal in accordance with rotation of a crankshaft, and a / lus signal transmitted from the crank / lus generating means.
- a crankshaft phase detecting means for detecting a signal as a crank / loose, detecting a specific rotational position of the crankshaft from the crank / less, and detecting a phase of the crankshaft, and detecting an intake pressure in an intake pipe of the engine.
- Intake pressure detecting means engine control means for controlling an operation state of the engine based on a crankshaft phase detected by the crankshaft phase detecting means and an intake pressure detected by the intake pressure detecting means, At least one or more crank pulses are detected by the crankshaft phase detecting means and the crankshaft is detected.
- a crank pulse abnormality detecting means for detecting that the crank pulse generating means force is abnormal when the specific rotational position of the shaft is not detected for a predetermined time or more.
- the engine control device is a crank / less generation means for transmitting a / loose signal in accordance with rotation of a crankshaft, and a / loose signal transmitted from the crank / loose generation means.
- Crankshaft phase detection means for detecting the crankshaft phase by detecting a specific rotational position of the crankshaft from the crank / less and detecting the intake pressure in the intake pipe of the engine.
- Pressure detecting means engine control means for controlling an engine operating state based on the phase of the crankshaft detected by the crankshaft phase detecting means and the intake pressure detected by the intake pressure detecting means, and the crankshaft
- the phase detection means A crank pulse abnormality detecting means for detecting that the crank pulse generating means is abnormal when the number of detected crank pulses is other than a predetermined value while detecting a specific rotational position of the rank shaft twice. It is characterized by the following.
- crank / loose generating means for transmitting a / loose signal in accordance with rotation of the crankshaft; and a pulse signal transmitted from the crank / loose generating means
- a crankshaft phase detecting means for detecting a specific rotation position of the crankshaft from the crank pulse and detecting a phase of the crankshaft
- an intake pressure detecting means for detecting an intake pressure in an intake pipe of the engine.
- FIG. 1 is a schematic configuration diagram of a motorcycle engine and its control device.
- FIG. 2 is an explanatory diagram of the principle of transmitting a crank pulse in the engine of FIG.
- FIG. 3 is a block diagram showing an embodiment of the engine control device of the present invention.
- FIG. 4 is an explanatory diagram for detecting a stroke state from the phase of the crankshaft and the intake pressure.
- FIG. 5 is a block diagram of the intake air amount calculation unit.
- FIG. 6 is a control map for obtaining the mass flow rate of the intake air from the intake pressure.
- FIG. 7 is a block diagram of a fuel injection amount calculation unit and a fuel behavior model.
- FIG. 8 is an explanatory diagram of the principle of detecting equal pitch and unequal pitch of a crank pulse.
- FIG. 9 is a flowchart showing a calculation process of crank pulse abnormality detection performed by the engine control unit of FIG.
- FIG. 10 is an explanatory diagram of a crank pulse abnormality.
- FIG. 1 is a schematic configuration showing an example of a motorcycle engine and a control device thereof.
- This engine 1 is a four-cylinder four-stroke engine, with a cylinder body 2, a crankshaft 3, a piston 4, a combustion chamber 5, an intake pipe 6, an intake valve 7, an exhaust pipe 8, an exhaust valve 9, a spark plug 10, and an ignition plug. It has a coil 11.
- a throttle valve 12 that opens and closes according to the accelerator opening is provided in the intake pipe 6, and an injector 13 as a fuel injection device is provided in the intake pipe 6 downstream of the throttle valve 12. Is provided.
- the injector 13 is connected to a filter 18, a fuel pump, and a pressure control valve 16 provided in a fuel tank 19.
- the engine 1 is a so-called independent intake system, and the injectors 13 are provided in each intake pipe 6 of each cylinder.
- the operating state of the engine 1 is controlled by the engine control unit 15.
- the engine control unit 15 As means for detecting the control input of the engine control unit 15, that is, the operating state of the engine 1, the rotation angle of the crankshaft 3, Crank angle sensor 20 as a crank pulse generating means for detecting phase, temperature of cylinder body 2 or cooling water temperature, that is, cooling water temperature sensor 21 for detecting engine body temperature, and air-fuel ratio in exhaust pipe 8
- An intake air pressure sensor 24 for detecting the intake air pressure in the intake pipe 6 and an intake air temperature sensor 25 for detecting the temperature in the intake pipe 6, that is, the intake air temperature, are provided.
- the engine control unit 15 receives the detection signals of these sensors and outputs control signals to the fuel pump 17, pressure control valve 16, injector 13, and ignition coil 11. I do.
- crank angle signal output from the crank angle sensor 20 will be described.
- a plurality of teeth 23 are protruded at substantially equal intervals on the outer periphery of the crankshaft 3, and the approach thereof is detected by a crank angle sensor 20 such as a magnetic sensor, and an electric A pulse signal is transmitted after performing a binary process using a so-called predetermined value.
- the circumferential pitch between the teeth 23 is 30 ° in terms of the phase (rotation angle) of the crankshaft 3, and the circumferential width of each tooth 23 is the phase (rotation angle) of the crankshaft 3. And set it to 10 °.
- FIG. 2B shows the state at the time of compression top dead center (the exhaust top dead center is also the same in form). The noise signal immediately before this compression top dead center is shown as "0".
- next pulse signal is numbered (numbered) up to "4" in the order of "1” in the figure, "2" in the next pulse signal, and so on.
- the tooth 23 corresponding to the pulse signal of "4" shown in the figure is a tooth missing portion. Therefore, the tooth is counted as an extra tooth as if the tooth is present. Numbered. When this is repeated, the missing portion approaches next to the pulse signal of "16" shown in the figure, so one extra tooth is counted in the same manner as described above, and the pulse signal of the next tooth 23 is shown in the figure. Number it as "1 8".
- the pulse signal of the next tooth 23 is numbered again as “0” in the figure.
- the compression top dead center should be immediately after the pulse signal of the tooth 23 labeled "0” in the figure.
- the detected pulse signal train or a single pulse signal thereof is defined as a crank pulse.
- the crank timing can be detected.
- the teeth 23 are exactly the same even if they are provided on the outer periphery of a member that rotates synchronously with the crankshaft 3.
- the engine control unit 15 is constituted by a microcomputer (not shown) or the like.
- FIG. 3 is a block diagram showing an embodiment of the engine control arithmetic processing performed by the microcomputer in the engine control unit 15. In this calculation process, an engine speed calculating unit 26 for calculating the engine speed from the crank angle signal, and crank timing information, that is, a crank timing detecting unit 27 for detecting the stroke state from the crank angle signal and the intake pressure signal.
- An intake air amount calculation unit 28 that reads crank timing information detected by the crank timing detection unit 27 and calculates an intake air amount from the intake air temperature signal and the intake air pressure signal; and an engine speed calculation unit 26
- the target air-fuel ratio is set based on the engine speed calculated in the above and the intake air amount calculated in the intake air amount calculating section 28, and the acceleration state is detected, so that the fuel injection amount and the fuel injection Fuel injection amount for calculating and setting timing
- the setting unit 29 and the crank timing information detected by the crank timing detection unit 27 are read, and the injection solution corresponding to the fuel injection amount and the fuel injection timing set by the fuel injection amount setting unit 29 is read by the injector 13.
- An injection / response output unit 30 that outputs the engine speed and the crank timing information detected by the crank timing detection unit 27 are read, and the engine speed and the fuel injection amount setting calculated by the engine speed calculation unit 26 are read.
- the ignition timing setting unit 31 that sets the ignition timing based on the fuel injection amount set by the unit 29, and the crank timing information detected by the crank timing detection unit 27 are read and set by the ignition timing setting unit 31.
- an ignition pulse output unit 32 that outputs an ignition pulse corresponding to the ignition timing to the ignition coil 11.
- the engine speed calculation unit 26 calculates the rotation speed of the crankshaft, which is the output shaft of the engine, as the engine speed from the time rate of change of the crank angle signal. Specifically, the instantaneous value of the engine speed obtained by dividing the phase between the adjacent teeth 23 by the corresponding crank pulse detection time and the average value of the engine speed, which is the moving average value, are calculated. .
- the crank timing detection unit 27 has a configuration similar to that of the stroke discriminating apparatus described in the above-mentioned Japanese Patent Application Laid-Open No. 10-227252, and thereby, for example, as shown in FIG. And outputs it as crank timing information. That is, in a four-cycle engine, the crankshaft and the camshaft are constantly rotating with a predetermined phase difference. For example, when a crank pulse is read as shown in FIG.
- the fourth "9" or "21" crank pulse shown in the drawing is either the exhaust stroke or the compression stroke.
- the exhaust valve is open during the exhaust stroke and the intake valve is closed, so the intake pressure is high.At the beginning of the compression stroke, the intake pressure is low because the intake valve is still open, or the intake valve is low.
- the intake air amount calculation unit 28 includes an intake pressure detection unit 281 that detects intake pressure from the intake pressure signal and the crank timing information, and an intake pressure detection unit 281 that detects a mass flow rate of intake air from the intake pressure.
- a mass flow rate map storage unit 282 that stores a map, a mass flow rate calculation unit 283 that calculates a mass flow rate according to the detected intake pressure using the mass flow rate map, and an intake air temperature based on the intake air temperature signal.
- a mass flow correction unit 285 is provided. That is, the mass flow rate map is created based on, for example, the mass flow rate when the intake air temperature is 20 ° C. Therefore, this is corrected with the actual intake air temperature (absolute temperature ratio) to calculate the intake air amount. .
- the intake air amount is calculated using the intake pressure value between the bottom dead center in the compression stroke and the intake valve closing timing. That is, when the intake valve is opened, the intake pressure and the cylinder pressure are substantially equal, so that the intake pressure, the cylinder volume, and the intake temperature are known, and thus the in-cylinder air mass can be obtained.
- the intake valve since the intake valve is open for a while after the start of the compression stroke, air flows in and out of the cylinder and the intake pipe during this time, and the intake air amount calculated from the intake pressure before bottom dead center is actually It may be different from the amount of air drawn into the cylinder. Therefore, even when the intake valve is opened, the intake air amount is calculated using the intake pressure during the compression stroke in which no air flows between the cylinder and the intake pipe.
- a correction corresponding to the engine speed obtained by an experiment may be performed using an engine speed having a high correlation with the burned gas partial pressure.
- PV Boyle-Charles law
- the fuel injection amount setting unit 29 stores the engine calculated by the engine speed calculation unit 26.
- a steady-state target air-fuel ratio calculating section 33 that calculates a steady-state target air-fuel ratio based on the engine speed 26 and the intake pressure signal, and a steady-state target air-fuel ratio calculated by the steady-state target air-fuel ratio calculating section 33.
- the steady-state fuel injection amount calculation unit 34 which calculates the steady-state fuel injection amount and fuel injection timing based on the intake air amount calculated by the intake air amount calculation unit 28, and the steady-state fuel injection amount calculation unit 34,
- the acceleration state is detected based on the fuel behavior model 35 used for calculating the constant fuel injection amount and the fuel injection timing, and the crank angle signal, the intake pressure signal, and the crank timing information detected by the crank timing detection unit 27.
- the fuel behavior model 35 is substantially integrated with the steady-state fuel injection amount calculation unit 34. That is, without the fuel behavior model 35, it is impossible to accurately calculate and set the fuel injection amount and the fuel injection timing in the present embodiment in which the injection in the intake pipe is performed.
- the fuel behavior model 35 requires the intake air temperature signal, the engine speed, and the coolant temperature signal.
- the steady-state fuel injection amount calculation unit 34 and the fuel behavior model 35 are configured, for example, as shown in a block diagram of FIG.
- the fuel injection amount injected from the injector 13 into the intake pipe 6 is M F -INJ
- the fuel adhesion rate adhering to the wall of the intake pipe 6 is X
- the amount of direct inflow directly injected into the cylinder is ((1 ⁇ X) XM F. INJ )
- the amount of adhesion to the intake pipe wall is (XM F. 1NJ ).
- the steady-state fuel injection amount calculation unit 34 first calculates a cooling water temperature correction coefficient K W from the cooling water temperature T W using a cooling water temperature correction coefficient table.
- a fuel cut routine for cutting fuel when the throttle opening is zero is performed, and then the air temperature corrected using the intake air temperature A is used.
- the target air-fuel ratio AF is calculated, and the target air-fuel ratio AF is calculated. Of multiplying the inverse ratio, further calculates the cooling water temperature correction coefficient required fuel inflow by multiplying the K W! ⁇ .
- the engine speed N E And intake air pressure P A - using a fuel adhesion rate map co When determining the fuel adhesion rate X from MAN, the same with the carry-off ratio map from the engine speed N E and the intake air pressure P A _ MAN carried away Calculate the rate ⁇ .
- the fuel direct inflow quantity M F _ DIR is because it is the fuel injection amount M F _ INJ of (1-X) times, where is divided by (1 -X) steady-state fuel Calculate the injection amount I ⁇ .
- the current fuel residual amount is M F — BUF .
- the intake air amount calculated by the intake air amount calculation unit 28 is detected at the end of the intake stroke of the cycle immediately before the intake stroke that enters the explosion (expansion) stroke or at the beginning of the subsequent compression stroke.
- the steady-state fuel injection amount and the fuel injection timing calculated and set by the steady-state fuel injection amount calculation unit 34 are also the results of the immediately preceding cycle according to the intake air amount. .
- the acceleration state detection section 41 has an acceleration state threshold value table. This is performed by calculating a difference value between the intake pressure at the same stroke as the present, specifically, the exhaust stroke or the intake stroke at the same crank angle and the current intake pressure, and determining the value as a predetermined value. Is a threshold value for detecting that the vehicle is in the accelerated state as compared with the value of, and specifically differs for each crank angle. Therefore, the acceleration state is detected by comparing a difference value of the intake pressure with the previous value with a predetermined value that is different at each crank angle. The acceleration state is detected after a predetermined cycle has elapsed since the previous acceleration state was detected.
- the acceleration fuel injection amount calculation section 42 calculates a difference value between the current value and the previous value of the intake pressure, and the engine speed NE.
- the acceleration fuel injection quantity M F _ ACC calculates the three-dimensional map corresponding to the.
- the fuel injection timing during acceleration is defined as when the acceleration state is detected by the acceleration state detection unit 41, that is, when the acceleration state is detected, the acceleration fuel injection amount ACC is immediately injected.
- the ignition timing setting unit 31 performs a basic operation based on the engine speed calculated by the engine speed calculation unit 26 and the target air-fuel ratio calculated by the target air-fuel ratio calculation unit 33.
- the basic ignition timing calculated by the basic ignition timing calculator 36 based on the acceleration fuel injection amount calculated by the acceleration fuel injection amount calculated by the basic ignition timing calculator 36 that calculates the ignition timing And an ignition timing correction unit 8 for correcting the ignition timing.
- the basic ignition timing calculation unit 36 obtains the ignition timing at which the generated torque becomes the largest based on the current engine speed and the target air-fuel ratio at that time by searching a map or the like, and calculates the basic ignition timing. That is, the basic ignition time calculated by the basic ignition timing calculation unit 36 is based on the result of the intake stroke of the immediately preceding cycle, similarly to the steady-state fuel injection amount calculation unit 34. Further, the ignition timing correction unit 38 calculates the acceleration fuel injection amount when the acceleration fuel injection amount is added to the constant fuel injection amount in accordance with the acceleration fuel injection amount calculated by the acceleration fuel injection amount calculation unit 42.
- the in-cylinder air-fuel ratio is determined and the in-cylinder air-fuel ratio is significantly different from the target air-fuel ratio set by the steady-state target air-fuel ratio calculation unit 33, the in-cylinder air-fuel ratio, the engine speed, and the intake pressure are used.
- the ignition timing is corrected by setting a new ignition timing.
- the engine control device of the present embodiment can appropriately control the operation state of the engine using the intake pressure and the crank pulse without using the cam sensor and the throttle sensor.
- the crank angle sensor 20 as a crank pulse generating means constituted by a magnetic sensor or the like captures the approaching state of the tooth 23 by changing the current value.
- the current value increases as the distance is closer, and decreases as the distance increases. If this is binarized with a certain predetermined value, the current value may increase, sometimes the crank pulse lengthens, or the off portion disappears, and when the current value is low, the crank pulse shortens, or the on portion may disappear. There is.
- Such a crank pulse abnormality is caused not only by the relative position between the crank angle sensor and the tooth, but also by the mounting direction of the crank angle sensor and the accuracy of the teeth.
- irregularly-spaced portions (hereinafter, also referred to as unequal pitch) corresponding to the tooth missing portions and normal regular-spaced portions (hereinafter, also referred to as equal-pitch) are detected as follows. And then. That is, as shown in FIG. 8, the front of the crank pulse width eta, 2 the width of the off portion of the crank pulse T, when the three following crank pulse width T (both time equivalent) of the off portion The value obtained by dividing the width ⁇ 2 by the sum of the previous crank / loose width ⁇ and the next crank / loose width ⁇ 3 is calculated as a crank pulse ratio I. If the crank pulse ratio I is smaller than a predetermined value, the pitch is equal.
- unequal pitches and equal pitches can be detected more reliably with respect to changes in the rotation of the crankshaft, that is, changes in the engine speed, but as described above, the crank pulse becomes longer. If the pitch becomes shorter or shorter, there is a problem that the detection of the unequal pitch and the equal pitch becomes uncertain.
- abnormality of the crank pulse is detected by the arithmetic processing shown in FIG.
- This calculation process is performed by an interrupt process at the fall of the crank pulse, for example, after each crank pulse is input. Further, in this arithmetic processing, although no step for communication is particularly provided, information necessary for the arithmetic is read at any time, and the result of the arithmetic is stored at any time.
- crank pulse ratio I is calculated in step S1.
- step S2 it is determined whether or not the crank pulse ratio I calculated in step S1 is larger than a predetermined value a, that is, whether or not the pitch is irregular, and if it is a tooth missing portion, To step S3, otherwise to step S4.
- the crank pulse counter T is determined whether or not a predetermined value T Q, the crank / Les counter Ding predetermined value Ding. If not, go to step S5; otherwise, go to step S6.
- step S5 the inter / error counter CNT is incremented, and then the process proceeds to step S7.
- step S7 the crank pulse counter T is cleared to "0", and then the process proceeds to step S8.
- step S8 the interval abnormality counter CNT has a predetermined value CNT. It is determined whether or not the above is true, and the interleave abnormality counter CNT has a predetermined value CNT. If so, the process proceeds to step S9; otherwise, the process returns to the main program. In step S6, the interval abnormality counter CNT is cleared to "0", and then the process proceeds to step S10.
- step S10 the crank pulse counter T is cleared to "0", and then the process returns to the main program.
- step S4 the crank pulse counter T is incremented, and then the flow shifts to step S11.
- step S1 1 wherein whether power crank pulse counter signature is counter Bok-up values T MAX or more, it is determined, when the crank pulse counter ⁇ is incremented value T MAX or more in the step S9 The process proceeds to step S12 if not.
- step S12 it is determined whether or not a crank pulse having a predetermined value or more cannot be detected within a predetermined time, and if a crank pulse having a predetermined value or more cannot be detected within the predetermined time, it is determined.
- the process proceeds to step S13, and if not, the process proceeds to step S14.
- step S13 the crank pulse undetectable counter K is incremented, and the process proceeds to step S15.
- step S15 it is determined whether or not the crank pulse undetectable counter K is equal to or greater than a count-up value K. If the crank pulse undetectable counter K is equal to or greater than a count-up value K MAX , the step S15 is performed. Move to S9, otherwise return to main program.
- step S14 the crank pulse undetectable counter K is cleared to "0", and then the process returns to the main program.
- step S9 a crank pulse abnormality is determined, and a predetermined fuel-safe process is performed, followed by terminating the calculation process.
- the engine torque is gradually reduced, for example, by gradually reducing the ignition of each cylinder, gradually shifting the ignition of each cylinder to the retard side, or increasing the speed of the throttle first and then closing it slowly. Or performing an abnormal display.
- the crank / loose counter T that is incremented for other pitches, that is, equal pitch crank pulses, is a predetermined value T. Not in the predetermined value CNT.
- crank pulse of the original pitch between unequal pitches is “11”.
- irregular pitch cannot be detected (crank angle sensor is too close to the teeth) as shown in Fig. 10b due to crank pulse abnormality as described above, or the irregular pitch cannot be detected as shown in Fig. 10c.
- the number of pitch crank pulses is not "1 1" (the crank angle sensor is too far from the teeth). According to the arithmetic processing of FIG. 9, any of these cases can be detected as a crank pulse abnormality.
- a re-crank pulse can be detected by a kick start or the like, but a crank pulse power equal to or more than a predetermined value cannot be detected within a predetermined time, or when the state continues for more than a count-up value K MAX , Even when the engine does not start rotating (even if the cause is not a crank pulse), it is possible to perform fail-safe.
- the intake pipe injection type engine has been described in detail, but the engine control device of the present invention is also applicable to a cylinder injection type engine, a so-called direct injection type engine.
- direct injection engine since fuel does not adhere to the intake pipe, it is not necessary to consider this, and the calculation of the air-fuel ratio may be performed by substituting the total amount of injected fuel.
- the power described in detail with respect to a so-called multi-cylinder engine having four cylinders is also applicable to a single-cylinder engine.
- the engine control unit can be replaced with various arithmetic circuits instead of the microcomputer.
- crank pulse generator when at least one or more crank pulses are detected and a specific rotational position of the crankshaft is not detected for a predetermined time or more. Detected that the crank pulse generator is abnormal With this configuration, it is possible to reliably detect an abnormality such as, for example, a crank pulse generating means including a magnetic sensor or the like being too close.
- the crank pulse is detected when the number of detected crank pulses is not a predetermined value. Since the configuration is such that the generation means is detected to be abnormal, it is possible to reliably detect an abnormality such as a crank pulse generation means formed of a magnetic sensor or the like being too far away.
- the crank pulse generating means is provided. Since it is configured to detect a force abnormality, it is possible to reliably detect an abnormality such as a crank pulse not being generated normally in a kick start or the like.
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- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN038185016A CN1671957B (zh) | 2002-08-01 | 2003-04-11 | 发动机控制装置 |
BR0313152-1A BR0313152A (pt) | 2002-08-01 | 2003-04-11 | Dispositivo de controle de motor |
JP2004525775A JP4073914B2 (ja) | 2002-08-01 | 2003-04-11 | エンジン制御装置 |
EP03766616A EP1541846A4 (en) | 2002-08-01 | 2003-04-11 | MOTOR REGULATOR |
AU2003236228A AU2003236228A1 (en) | 2002-08-01 | 2003-04-11 | Engine controller |
US11/048,633 US6990405B2 (en) | 2002-08-01 | 2005-02-01 | Engine control device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002225159 | 2002-08-01 | ||
JP2002-225159 | 2002-08-01 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/048,633 Continuation US6990405B2 (en) | 2002-08-01 | 2005-02-01 | Engine control device |
Publications (1)
Publication Number | Publication Date |
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WO2004013479A1 true WO2004013479A1 (ja) | 2004-02-12 |
Family
ID=31492146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/004665 WO2004013479A1 (ja) | 2002-08-01 | 2003-04-11 | エンジン制御装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US6990405B2 (ja) |
EP (1) | EP1541846A4 (ja) |
JP (1) | JP4073914B2 (ja) |
CN (1) | CN1671957B (ja) |
AU (1) | AU2003236228A1 (ja) |
BR (1) | BR0313152A (ja) |
TW (1) | TWI247076B (ja) |
WO (1) | WO2004013479A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6990405B2 (en) | 2002-08-01 | 2006-01-24 | Yamaha Motor Company Ltd. | Engine control device |
US20220136452A1 (en) * | 2019-03-13 | 2022-05-05 | Vitesco Technologies GmbH | Method And Device For Detecting A Power-Changing Manipulation Of An Internal Combustion Engine |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7607415B2 (en) * | 2006-10-03 | 2009-10-27 | Gm Global Technology Operations, Inc. | Method of crank signal disturbance compensation |
US7761223B2 (en) * | 2008-06-17 | 2010-07-20 | Gm Global Technology Operations, Inc. | Fuel system diagnostics by analyzing engine cylinder pressure signal and crankshaft speed signal |
US8100000B1 (en) | 2009-03-31 | 2012-01-24 | Honda Motor Co., Ltd. | Device and method for detecting vehicle engine pulse generator plate tooth defects |
JP4758498B2 (ja) * | 2009-07-06 | 2011-08-31 | 三井造船株式会社 | 機関回転数算出装置およびガバナ制御システム |
JP5010659B2 (ja) * | 2009-09-25 | 2012-08-29 | 株式会社デンソー | クランク角検出システムの異常診断装置 |
JP5195738B2 (ja) * | 2009-12-24 | 2013-05-15 | トヨタ自動車株式会社 | 回転センサの異常判定装置 |
CN102235258A (zh) * | 2010-04-29 | 2011-11-09 | 光阳工业股份有限公司 | 双缸喷射引擎的行程判定方法 |
ITMI20120003U1 (it) * | 2012-01-05 | 2013-07-06 | Piaggio & C Spa | "sistema integrato di accensione e di alimentazione per motori a combustione interna" |
FR3044361B1 (fr) | 2015-11-26 | 2017-11-24 | Continental Automotive France | Procede de determination de la position angulaire d'un moteur |
US20180195455A1 (en) * | 2017-01-12 | 2018-07-12 | GM Global Technology Operations LLC | Engine combustion phasing control during transient state |
KR102383262B1 (ko) * | 2017-11-03 | 2022-04-06 | 현대자동차주식회사 | 크랭크 센서의 노이즈 보상 방법 |
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JPS6361754A (ja) * | 1986-09-02 | 1988-03-17 | Toyota Motor Corp | 内燃機関のフエイルセイフ装置 |
JPH04194345A (ja) * | 1990-11-28 | 1992-07-14 | Toyota Motor Corp | 回転信号の異常検出装置 |
JPH0830889A (ja) * | 1994-07-14 | 1996-02-02 | Nippondenso Co Ltd | 故障診断装置 |
JPH10227252A (ja) | 1997-02-13 | 1998-08-25 | Honda Motor Co Ltd | 4サイクルエンジンの行程判別装置 |
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JPS61275603A (ja) * | 1985-05-31 | 1986-12-05 | Honda Motor Co Ltd | 内燃エンジンのクランク角信号の異常検出方法 |
GB2272973B (en) * | 1992-11-14 | 1996-04-24 | Delco Electronics Corp | Method and apparatus for controlling a vehicle engine |
JP4096652B2 (ja) * | 2002-07-30 | 2008-06-04 | 三菱ふそうトラック・バス株式会社 | 増圧型燃料噴射装置 |
AU2003236228A1 (en) | 2002-08-01 | 2004-02-23 | Yamaha Hatsudoki Kabushiki Kaisha | Engine controller |
-
2003
- 2003-04-11 AU AU2003236228A patent/AU2003236228A1/en not_active Abandoned
- 2003-04-11 BR BR0313152-1A patent/BR0313152A/pt active Search and Examination
- 2003-04-11 JP JP2004525775A patent/JP4073914B2/ja not_active Expired - Fee Related
- 2003-04-11 WO PCT/JP2003/004665 patent/WO2004013479A1/ja active Application Filing
- 2003-04-11 CN CN038185016A patent/CN1671957B/zh not_active Expired - Fee Related
- 2003-04-11 EP EP03766616A patent/EP1541846A4/en not_active Withdrawn
- 2003-07-30 TW TW092120871A patent/TWI247076B/zh not_active IP Right Cessation
-
2005
- 2005-02-01 US US11/048,633 patent/US6990405B2/en not_active Expired - Fee Related
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JPS6361754A (ja) * | 1986-09-02 | 1988-03-17 | Toyota Motor Corp | 内燃機関のフエイルセイフ装置 |
JPH04194345A (ja) * | 1990-11-28 | 1992-07-14 | Toyota Motor Corp | 回転信号の異常検出装置 |
JPH0830889A (ja) * | 1994-07-14 | 1996-02-02 | Nippondenso Co Ltd | 故障診断装置 |
JPH10227252A (ja) | 1997-02-13 | 1998-08-25 | Honda Motor Co Ltd | 4サイクルエンジンの行程判別装置 |
US20010010218A1 (en) * | 1997-02-13 | 2001-08-02 | Honda Giken Kogyo Kabushiki Kaisha | Stroke identifying unit of a four-stroke engine |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6990405B2 (en) | 2002-08-01 | 2006-01-24 | Yamaha Motor Company Ltd. | Engine control device |
US20220136452A1 (en) * | 2019-03-13 | 2022-05-05 | Vitesco Technologies GmbH | Method And Device For Detecting A Power-Changing Manipulation Of An Internal Combustion Engine |
US11821382B2 (en) * | 2019-03-13 | 2023-11-21 | Vitesco Technologies GmbH | Method and device for detecting a power-changing manipulation of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
TWI247076B (en) | 2006-01-11 |
EP1541846A4 (en) | 2009-04-15 |
JP4073914B2 (ja) | 2008-04-09 |
CN1671957B (zh) | 2010-06-02 |
CN1671957A (zh) | 2005-09-21 |
AU2003236228A1 (en) | 2004-02-23 |
EP1541846A1 (en) | 2005-06-15 |
JPWO2004013479A1 (ja) | 2006-09-21 |
US20050193979A1 (en) | 2005-09-08 |
TW200404954A (en) | 2004-04-01 |
US6990405B2 (en) | 2006-01-24 |
BR0313152A (pt) | 2005-06-28 |
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