• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Arrangement for controlling engine operating conditions by regulating mixture ratio/or recycled exhaust gas quantity comprises a pusle generator operatively connected to the crankshaft and connected to a first input of a phase comparator to the second input of which is connected a circuit arrangement which emits a signal characteristic of a uniform system rotating in synchronisation with the fundamental speed of the engine. The circuit arrangement pref. comprises a voltage-controlled generator of which the input is connected via two integrators to a first output of the phase comparator and of which the output is connected to a second input of the phase comparator.
    公开号:SU1061702A3
    申请号:SU752152414
    申请日:1975-07-11
    公开日:1983-12-15
    发明作者:Бианчи Валерио；Лач Райнхард
    申请人:Роберт Бош Гмбх (Фирма)；
    IPC主号:
    专利说明:

    2. A device for regulating the performance of an internal combustion engine, comprising:
    With a crankshaft, characterized in that, in order to increase fuel efficiency, it is equipped with an instantaneous actual rotational speed sensor of the crankshaft, a phase comparison unit with two inputs and outputs, an averaging unit of the actual rotational speed values, and a comparison unit for the difference between the instantaneous and averaged rotational frequency with two inputs, a reference signal setting device, and the actual rotational speed, the first input; / the phase comparison unit is connected to the output of the sensor of the instantaneous actual rotational speed of the crankshaft input shaft to the averaging unit of the actual rotation frequency, the first output of the phase comparison unit to the first input of the comparison unit of the instantaneous and averaged rotational frequency, the second input of which is connected to the setpoint of the reference signal of the actual rotational speed, and the output of the comparison unit of the instantaneous rotational frequency and the average rotational speed is associated with the executive body.
    3. The device according to claim 2, characterized in that it is equipped with a variable-voltage generator / input, the input of which, with the help of integrators, is connected to the first input of the phase comparison unit, and the output to the second output of the phase comparison unit, the block The averaged values of the actual rotation frequency are made in the form of an additional generator with adjustable voltage associated with two of these integrators.
    four; Device on PP. 2 and 3, of which it is provided with an adjustable current source associated with the output of the second integrator.
    5. Device on PP. 2-4, characterized in that it is provided with a semiconductor relay with a capacitor and a control electrode connected with the second output of the phase comparison unit, the capacitor being connected with an adjustable current source.
    6, the Device in PP. 2-5, characterized in that the integrators associated with the additional generator are in the form of passive structural elements — resistor and capacitor, and the integrator is in the form of an operational amplifier and integrating capacitor, the first integrator being connected to the second output of the phase comparison unit.
    This invention relates to automatic regulation of internal combustion engines.
    Methods are known for adjusting the performance characteristics of an internal combustion engine by measuring the rotational speed, determining the irregularity of rotation and changing the composition of the working mixture according to several adjustable parameters by acting on the actuator of the control device Ci.
    A device for controlling the performance of an internal combustion engine is known, comprising an actuator associated with the crankshaft.
    When implementing the known methods, the content of harmful components in the exhaust gases is not minimized and the minimum fuel consumption is not achieved. It is possible to operate the internal combustion engine in the most lean working mixture when the content of harmful substances is predetermined.
    components in the exhaust rasaj and low fuel consumption. A pressure oscillation is observed in the cylinders of the engine. Separate
    The pressure distribution elements are determined by uncontrolled operating parameters of the internal combustion engine, for example, fluctuations in the coefficient of excess air, filling ratio and fluctuations in airflow turbulence. If the pressure in the combustion chamber is measured by instantaneous angular velocity values on the crankshaft.
    Other interfering effects are detected, for example, due to mass fluctuations of the crank mechanism, asperities of the road bed along which the car is moving, or other forces acting on the cylinder block of the internal combustion engine.
    These fluctuations affecting the normal distribution of pressure in the cylinder of an internal combustion engine and expressed in the oscillations of the angular velocity of the crankshaft could be eliminated by the use of low-pass filters. But, since the internal combustion engine must operate in a wide range of rotational frequencies, it is difficult to choose filters that would be equally suitable for both low and high rotational speeds. The purpose of the invention is to increase fuel efficiency. The goal is achieved according to the method of controlling the performance of an internal combustion engine by measuring the rotational speed, determining the rotational unevenness and changing the composition of the working mixture using several adjustable parameters by acting on the actuator of the control unit as one of the adjustable parameters, choose the rotational unevenness of the crankshaft, form the reference speed signal and the actual speed signal, calculate the actual This uneven rotational frequency as the difference between the reference signal and the actual rotational frequency signal compares this difference with the specified irregularity of the crankshaft rotation, produces a correction pulse by transmitting the comparison and transmits the latter to the actuator of the control unit for measurement. Composition, a device for carrying out the method, comprising an actuator associated with the crankshaft, is equipped with an instantaneous actual crankshaft speed sensor, a phase comparison unit with daum inputs and outputs, an average rotation frequency averaging unit, a comparison unit the difference between the instantaneous and averaged rotational frequency with two inputs, the unit of the reference signal of the actual rotational speed, the first input of the phase comparison unit is connected to the output of the instantaneous actual sensor crankshaft rotation frequency, the second input to the averaging unit of the actual rotational frequency, the first output of the phase comparison unit to the first input of the unit comparing the instantaneous and average rotational speed, the second input of which is connected to the unit of the reference signal of the actual rotation frequency, and the output unit comparing the difference between the instantaneous and averaged frequency of the speed is connected with the executive body of the control device to change the composition of the mixture. In addition, the device is equipped with a variable voltage generator, the input of which is connected to the first input of the phase comparison unit with the help of integrators, and the output is c. the second output of the phase comparison unit, the averaging unit of the values of the actual rotation frequency, is made in the form of an additional generator with adjustable voltage connected to two of these integrators. The device is equipped with an adjustable current source connected to the output of the second integrator. The device is equipped with a semiconductor relay with a capacitor and a control electrode connected to the second output of the phase comparison unit, the capacitor being connected to a controlled current source. The integrators associated with the additional generator are in the form of passive structural elements - a resistor and a capacitor, and the third integrator - in the form of an operational amplifier and an integrating capacitor, the first capacitor being connected to the second output of the phase comparison unit. FIG. Figure 1 shows the pressure diagram P in the cylinder of an internal combustion engine over time t; in fig. 2 - change in the angular velocity UJ depending on time t at certain coefficients of excess air, ° С; in fig. 3 diagram of the device for implementing the method. The device contains an actuator connected to the crankshaft -1, equipped with a ring gear 2. The device is equipped with a sensor 3 of the instantaneous actual frequency of rotation of the crankshaft, a former 4 rectangular pulses, a phase comparison unit with two inputs and outputs, an averaging unit of the actual frequency values rotation, block 6 compares the difference: the instantaneous and average rotational speed with two inputs; setting 7 of the reference signal of the actual rotation frequency, the first input of block 5 is connected to the output of sensor 3, the second input of block 5 to the averaging block, the output of block 5 to the first input of block 6, the second input of which is connected to the setting device 7, and the output of block 6 is connected to the executive body of the control device for changing the composition of the mixture. The input of the variable-voltage generator 8 with the help of integrators is connected to the first output of block 5, and the output to the second input of block 5. The averaging block of the actual rotation frequency is made as an additional generator with adjustable voltage (not shown) associated with the integrators 9 and 10. The regulated current source 11 in the form of an amplifier transistor is connected to the output of the integrator 12. Semiconductor relay 13 with capacitor 14 is connected to the second output of block 5, and the capacitor 14 with adjustable current source 11. And tegrators 9 and 10 v Implemented as a resistor and a capacitor, integrator 12 as an operational amplifier and integrating capacitor 1 The device is equipped with resistors 16-2 and adjustable resistors 26 and 27. Resistor 27 is connected to a bistable scanning stage 28 and operational amplifier 29. Wire 30 is co is divine. The method is carried out as follows. As the ring gear 2 passes by the sensor 3. a signal is induced. the instantaneous actual rotational frequency, which is used to measure the rotational frequency; As one of the adjustable parameters, the rotational speed of the crankshaft is set. Using shaper 4, a signal of actual rotational frequency is generated in the form of a series of square impulses fed to the first input of block 5 compared to NIN phases. The integrators 9 and 10, as well as the alternator with variable voltage and the setting unit 7 connected, give you a reference frequency signal for the second IAC of phase comparison unit 5, In blocks 5 and 8, calculate the actual frequency irregularity as the difference between the actual signal rotational speed and reference signal. In unit 5 of comparison, this difference is compared with a given non-uniformity of rotation, as a result of which a signal corresponding to a change in rotation frequency is output at the first output of unit 5, taking into account the sign. At the output of the integrator 10 give a signal corresponding to the angular acceleration. After re-integrating this signal at the output of integrator 12, a correction pulse is obtained, which corresponds to the number of revolutions. This pulse is transmitted through a diode to an amplifying transistor, the output electrode of which is connected to the control electrode of an adjustable current source 11. Depending on the rotational speed signal, the first amplifying transistor can be more or less widely regulated in the open state. If, for example, the rotational speed is higher at the output of the integrator 12, then a higher voltage is created. This voltage means that the current through the collector-E section of the amplifying transistor increases so that a more negative signal occurs on the collector of the first amplifying transistor, causing an increased current through the section-emitter-collector of the adjustable current source 11 proportional to the rotation frequency. When a positive signal occurs at the second output of the block 5, the semiconductor relay 13 is blocked and the capacitor 14 is charged through the current source 11. In connection with the fact that the charging current passing through the relay 13 is proportional to the rotation frequency and the capacitor 14 can charge If the difference in time of the stroke is recorded at the second output of block 5, then after charging the capacitor, its voltage is proportional to the error of the running time multiplied by the magnitude of the rotation frequency. This, however, exactly corresponds to the actual value of the angle of rotation of the motor shaft. Now, the corresponding electrical signal is compared with a predetermined value and the corresponding output signal is transmitted to the bistable stage 28 of the sweep. The capacitor is charged only if the relay 13 is blocked. Conversely, capacitor 14 is discharged if relay 13 is in its conductive state. In this case, the switching section of the relay 13 is connected in parallel through a resistor and a diode to the capacitor 14. When a new signal comes from the second input of the unit 5, the relay 13 is blocked and the described cycle repeats. Using the comparison unit 6, the reference and actual values of the rotation frequency are compared and short pulses are generated at the output of this block if the actual value exceeds the specified value. Conversely, no pulses are generated at the output of the comparison unit 6 if the actual value is less than the specified one. Due to the fact that the output of the comparator unit 6 is connected to the set input of the bistable scanning stage 28, it is brought to the switching position at the output of pulses from the output of the comparator unit 6, at which output signals appear at the output of the bistable scanning stage 28. At each clock pulse that is removed at the collector, the relay 13 switches the opposite bistable stage 2B of the sweep to the switching position at which a zero signal appears at the output of this bistable stage 28. If, therefore, the actual value is less than the reference value, then a constant zero signal arises, as mentioned above. This is a unstable cheat that at the entrance
    权利要求:
    Claims (6)
    [1]
    METHOD FOR REGULATING OPERATIONAL CHARACTERISTICS OF THE INTERNAL COMBUSTION ENGINE AND DEVICE FOR
    ITS IMPLEMENTATION (57) 1. The method of controlling the operational characteristics of an internal combustion engine by measuring the rotational speed, determining the unevenness of the rotation and changing the composition of the working mixture according to several adjustable parameters by influencing the actuator of the control device, characterized in that, in order to increase fuel economy, as one of the adjustable parameters, the unevenness of rotation of the crankshaft is selected, a reference signal of the frequency of rotation and a signal of fact eskoy speed, calculating the actual unevenness of the rotational speed as the difference between the reference signal and the actual speed, compares this difference with a predetermined nonuniform rotation of the crankshaft, at reeul 1 ^ g tattoo comparisons produce a correction pulse and transmitting the latter to the actuator control unit to change composition of the mixture.
    FIG. one
    [2]
    2. A device for regulating the operational characteristics of an internal combustion engine, comprising an actuator associated with the crankshaft, characterized in that, in order to increase fuel economy, it is equipped with a sensor for the instantaneous actual speed of the crankshaft, a phase comparison unit with two inputs and outputs, the unit for averaging the values of the actual speed., the unit for comparing the difference between the instantaneous and average speeds with two inputs, the reference signal setter th rotation speed, with the first input of the phase comparison unit connected to the output of the sensor of the instantaneous actual rotational speed of the crankshaft, the second input to the unit for averaging the values of the actual speed, the first output of the phase comparison unit to the first input of the unit for comparing the difference between the instantaneous and average speed , the second input of which is connected to the master of the reference signal of the actual speed, and the output of the unit for comparing the difference between the instantaneous and average speeds is connected with the executive body.
    [3]
    3. The device according to claim 2, characterized in that it is equipped with an adjustable voltage generator, an input which, with the help of integrators, is connected to the first input of the · phase comparison unit, and the output to the second output of the phase comparison unit, averaging unit values of the actual speed of rotation is made in the form of an additional generator with adjustable voltage associated with two of these integrators.
    [4]
    4 ·, The device according to paragraphs. 2 and 3, characterized in that it is equipped with an adjustable current source connected to the output of the second integrator.
    [5]
    5. The device according to paragraphs. 2-4, characterized in that it is equipped with a semiconductor relay with a capacitor and a control electrode connected to the second output of the phase comparison unit, the capacitor being connected to an adjustable current source. ·
    [6]
    6. The device according to paragraphs. 2-5, characterized in that the integrators associated with the additional generator are made in the form of passive structural elements - a resistor and a capacitor, and the integrator - in the form of an operational amplifier and an integrating capacitor, the first integrator connected to the second output of the phase comparison unit.
    类似技术:
    公开号 | 公开日 | 专利标题
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    GB1395276A|1975-05-21|Internal combustion engines
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    US4044236A|1977-08-23|Method and apparatus for controlling the operation of an internal combustion engine
    CA1080793A|1980-07-01|Electronic arrangement for controlling the ignition of an internal combustion engine
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    US4178891A|1979-12-18|Method and apparatus for controlling the operation of an internal combustion engine
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    US3783850A|1974-01-08|Ignition advance circuit
    JPH074298A|1995-01-10|Method and apparatus for controlling rotational smoothness of internal combustion engine
    CA1052888A|1979-04-17|Closed loop air-fuel ratio control system for use with internal combustion engine
    JPS5746034A|1982-03-16|Combustion controller
    US4099493A|1978-07-11|Method and apparatus for controlling an internal combustion engine
    US4284045A|1981-08-18|Simplified electronic ignition timing and A/D conversion
    同族专利:
    公开号 | 公开日
    ES439547A1|1977-02-16|
    BR7504617A|1976-07-06|
    IT1039900B|1979-12-10|
    SE413336B|1980-05-19|
    DE2434743A1|1976-02-05|
    SE7508194L|1976-01-20|
    JPS6037295B2|1985-08-26|
    DE2434743C2|1984-09-20|
    JPS5134330A|1976-03-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7051058B2|2000-05-17|2006-05-23|Robert Bosch Gmbh|Method and device for filtering a signal|
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    RU2662096C2|2013-12-03|2018-07-23|ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи|Method and system for inferring barometric pressure at low throttle angles|DE1256944B|1961-12-22|1967-12-21|Frank Thoma Dipl Ing|Device for fuel-air mixture control of internal combustion engines|
    US3789816A|1973-03-29|1974-02-05|Bendix Corp|Lean limit internal combustion engine roughness control system|DE2642738C2|1976-09-23|1986-08-07|Robert Bosch Gmbh, 7000 Stuttgart|Method for regulating the operating behavior of an internal combustion engine in a specified operating range|
    GB2024462B|1978-05-08|1983-03-30|Bendix Corp|Integrated closed loop engine control system|
    JPH0159421B2|1980-09-05|1989-12-18|Toyota Motor Co Ltd|
    JPS5952148U|1982-09-30|1984-04-05|
    DE3248745C2|1982-12-31|1992-04-30|Robert Bosch Gmbh, 7000 Stuttgart, De|
    JPH0454823B2|1984-08-06|1992-09-01|Nissan Motor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2434743A|DE2434743C2|1974-07-19|1974-07-19|Method and device for regulating the operating behavior of an internal combustion engine|
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