CN2641295Y - Electronic control device used for variable-geometry turbine booster - Google Patents
Electronic control device used for variable-geometry turbine booster Download PDFInfo
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- CN2641295Y CN2641295Y CN 03252909 CN03252909U CN2641295Y CN 2641295 Y CN2641295 Y CN 2641295Y CN 03252909 CN03252909 CN 03252909 CN 03252909 U CN03252909 U CN 03252909U CN 2641295 Y CN2641295 Y CN 2641295Y
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Abstract
The utility model relates to an electronic control device, consisting of a container shell, a sensor, an electronic control unit, a control application software and a cable used in the variable geometry turbocharger. The electronic control unit consists of an input module, a central control module, an output module, a communication module and a power source module; wherein, the central control module applied to automatically control the nozzle ring angle of the variable geometry turbocharger adopts embedded microcontroller PIC series chip or C8051F series chip or other series chip with the equivalent functions, the memory of which stores a control program to order the actuating unit. According to the adjustment pattern of the engine matching with that of the variable-geometry turbocharger, the electronic controller gets the ideal inlet pressure of the engine in such work status to compare with the actual inlet pressure, and outputs a control signal to drive the actuating unit to spur the nozzle ring of the variable geometry turbocharger and change the outlet pressure of the booster, thereby making the engine get an ideal inlet pressure. In addition, the device is strictly sealed in a fully sealed way.
Description
Technical field
The utility model relates to a kind of electric control device that diesel engine adopts variable geometry turbocharger that is used for.This device is made up of sensor, electronic controller, control application software and cable.
Technical background
In recent years, people require more and more higher to vehicle dynamic quality, Economy, emission performance, and variable geometry turbocharger has obtained extensive use on supercharged diesel engine.For matching problem that solves variable geometry turbocharger and diesel engine and the transient response that improves supercharged diesel engine, development variable geometry turbocharger control system becomes the target of professional person's unremitting pursue.As Britain Alseto Engineering Co., Ltd on May 23rd, 97 Chinese patents CN1225709A number disclosed " control system of the turbosupercharger of variable geometry " disclosed technological scheme, provide and improved a kind of mentality of designing that pressurized machine and engine speed respond.This scheme has proposed the feasibility (design method) of variable geometry turbocharger control system from principle, but reaching, it does not improve slow-speed of revolution output torque, reduce stable state emission smoke intensity and engine free and quicken smoke intensity, antidetonation ≮ 6g, anti-dust, anti-electromagnetic interference and salt fog requirement.Also do not have good property monitored and maintainability.
Summary of the invention
The purpose of this utility model provide a kind of simple, cheap, install and use and do not influence existing engine production, do not influence motor after the inefficacy and continue reliably working, shockproof anti-tampering effective variable geometry turbocharger electric control device.
The utility model is achieved by following technical proposals: the electronic control unit in the inclusion body shell connects throttle sensor, engine rotation speed sensor, engine charge pressure transducer, intake air temperature sensor and host computer by cable; Electronic control unit connects engine supercharger by actuating device, and controls variable geometry turbocharger nozzle ring position automatically.Described electronic control unit is made up of load module, central control module, output driver module, communication module and power module etc., the central control module of electronic control unit is that embedded microcontroller PIC family chip or C8051F family chip and other have the family chip of suitable function, deposits the execution command of control program in its storage.Described electronic control unit obtains throttle signal from throttle sensor, obtain engine rotational speed signal from speed probe, obtain the pressurized machine intake air temperature signals from temperature transducer, obtain the current plenum pressure signal feed back from pressure transducer, and above-mentioned signal handled and data capture, control law according to the inside setting, calculate target boost pressure, obtain direction and the amplitude that the nozzle ring aperture is adjusted by judgement, output drive signal control actuating device makes the nozzle ring aperture reach the target location.
Output driver module described in the utility model is selected L298 integrated chip and logic control chip L297 or similar chip for use, and communication module is selected MAX232 chip or similar chip for use, and power module is selected integrated switch power LM2576 or similar performance switch power for use.
The inclusion body shell of electronic control unit described in the utility model has damper mechanism.Described damper mechanism is installed in a side of inclusion body shell.Also be shaped on some parallel radiating groove rows and automobile cable general connector on the described inclusion body shell.
Throttle sensor described in the utility model can be a RP200 type sensor.Described speed probe can be a magnetoelectric sensor.Described pressure transducer can be a HY8101J type sensor, and described temperature transducer can be a HY820JD5 type sensor.
Central control module described in the utility model has 4 road A/D ALT-CH alternate channels at least, 1 road CCP passage, and 5 the tunnel are used for the output channel of control step motor, 1 road SCI serial communication interface.
The control program that leaves in the central control module storage with the execution command form described in the utility model is the timer interrupt control routine, it comprise initialization module, signal acquisition module, stable state MAP module, dynamically MAP module, closed loop control module, open loop control module, export driver module, the protection module that transfinites, communication module, digital PID module, fault display modular.
The utlity model has following useful good effect.
The inclusion body shell is with totally enclosed form, strict seal.Have the effect of heatproof, antidetonation, moisture-proof, fungi-proofing, anti-dust, anti-electromagnetic interference, thereby guaranteed to work stably in a long term under the open-air sand and dust environment of automobile.Its volume is little, and easily heat radiation is easy for installation.The sensor mature and reliable that the utility model is selected for use.The utility model can be installed on the motor more conveniently, does not influence motor and oil pump assembling line.The embedded microcontroller PIC family chip that central control module is selected for use has high integration, high-speed, strong functions, small volume, low price, low-work voltage, low power consumption and the bigger direct driving force of input output.The utility model load module has been selected different signal processing circuits for use according to the difference of input parameter: the shaping processing circuit that tach signal is adopted the scmitt trigger circuit formation; Adopt translation to amplify the mode processing circuit to throttle position signal; Pressure signal is adopted High frequency filter and buffering amplification treatment circuit; Temperature signal is adopted constant current power supply and nonlinear compensation and buffering amplification treatment circuit; Output control module is selected L297, L298 chip for use; Power module is selected integrated circuit switch power supply LM2576 for use; Superpressure not when the control program that central control module is deposited has guaranteed that motor is worked by the matching pressure value, delivery temperature is overtemperature not, not excess revolutions of turbosupercharger, turbosupercharger and Engine Matching work do not have concussion.And improved slow-speed of revolution output torque, reduce stable state emission smoke intensity and engine free and quickened smoke intensity.The utility model is simple, cheap, simple to operate, easy to use, have the good system monitored, maintainability and reliability.Even also not influencing motor after inefficacy continues to work reliably.
Description of drawings
Fig. 1 is the utility model structural principle skeleton diagram.
Fig. 2 is an electronic control unit structural principle skeleton diagram of the present utility model.
Fig. 3 is the utility model central control module figure.
Fig. 4 is the utility model throttle signal processing circuit figure.
Fig. 5 is the utility model tach signal oil processing circuit diagram.
Fig. 6 is the utility model pressure signal processing circuit figure.
Fig. 7 is the utility model processes temperature signal circuit diagram.
Fig. 8 is the utility model step motor control and drive circuit figure.
Fig. 9 is the utility model power module circuitry figure.
Figure 10 is the utility model communication module circuit diagram.
Figure 11 is the utility model inclusion body shell plan view.
Figure 12 is the side view of inclusion body shown in Figure 11.
Figure 13 is the utility model device open loop control schematic representation.
Figure 14 is the utility model device closed loop control schematic representation.
Embodiment
In order to further specify rather than limit above-mentioned way of realization of the present utility model, provide most preferred embodiment below in conjunction with accompanying drawing, thereby make details of the present utility model and advantage become more obvious.
Electronic control unit 5 (ECU) among Fig. 1 obtains from behind throttle Sg, rotation speed n, the intake temperature T of throttle sensor 1, speed probe 2, intake air temperature sensor 4 and pressure transducer 3 and the current boost pressure Pc signal that feeds back, at first carry out data capture and signal processing, control law according to inside is provided with calculates target boost pressure Pc
*, according to the current boost pressure Pc that feeds back,, obtain direction and amplitude that the nozzle ring aperture is adjusted by calculate judging, output drive signal control step motor 6 makes the nozzle ring aperture reach the target location, up to pilot pressure Pc at goal pressure Pc
*In the margin of error that allows, so constitute the pressure closed loop control system.For the ease of debugging test, the ECU unit has also designed serial communication interface and computer carries out communication, can control command is set or send data to computer 7 by computer 7, so that data storage, processing and analysis.Other electric controller that this communication port can also be kept from now on automobile carries out communication.
In Fig. 2,5 pairs of signals that come from spot sensor output of electronic control unit are handled, and are finished by Fig. 4, Fig. 5, Fig. 6 and circuit shown in Figure 7 respectively.Among Fig. 3, SW-PB is a reset button, and DA is a diode, and C is an electric capacity, and Y is a crystal oscillator, and R is a resistance, and CCP1 is quick capture channel, and the output terminal of its connection diagram 5 tach signal processing circuits is used for the measurement of engine speed.Among Fig. 3, STEPCL, ENABLE, RESET, HALF/FULL, DIRECT be respectively the step motor control pulse, allow, reset, half step/synchronizing, segment control channel, the respective pins of connection diagram 8 step motor control and drive circuit is used for Stepping Motor Control.Among Fig. 3, AN0, AN1, AN2, AN3 are four analogue signal input channels, be used for the A/D conversion of analogue signal, connection diagram 4 throttle signal processing circuits output respectively, the output of Fig. 7 processes temperature signal circuit, the output of Fig. 6 pressure signal processing circuit and stand-by set of dies analog signal input channel.
In circuit shown in Figure 5, its input signal is the measurement of engine rotate speed signal of sensor, it is a sine wave signal, by shown in circuit through after the filtering, shaping, be processed into all comparatively steep pulse shape of rising edge and trailing edge, export to the quick capture channel of CCP1 of central control module and gather.
In circuit shown in Figure 4, its input signal is the output signal of engine throttle position measurement sensor, it is the voltage signal of 0～5v, but because sensor actual rotation angle is very little, its voltage change scope is very little, in order to improve resolution and measuring accuracy, adopt the diagram circuit to carry out parallel moving of signal and amplification processing, be transformed to voltage signal with changing very little voltage signal, export to the simulating of central control module/digital translation passage AN0 then and gather near 0～5v range.
In circuit shown in Figure 6, its input signal is an engine charge pressure transducer output signal, after filtering and buffering are amplified, exports to the simulating of central control module/digital translation passage AN2 and gathers.
In circuit shown in Figure 7, its input signal is the engine air inlet temperature sensor output signal, and it is the resistance value that changes with temperature.Processing circuit adopts the steady current of [constant output to flow through this resistance, produces the voltage of 0～5v thereon, exports to the simulating of central control module/digital translation passage AN1 again and gather after nonlinear compensation and buffering are amplified.
Circuit shown in Figure 8 is a stepping motor control circuit.The power drive of the stepper motor of present embodiment adopts the L298 integrated chip of ST company, the Stepping Motor Control logical signal adopts L297 logic control chip, it receives the control signal of central control module output, the control signal that meets sequential relationship with generation, receive the feedback signal of sensing resistor Rs simultaneously, compare with setting value, when reaching the setting electric current, phase current produces pulse-width signal later on, finish copped wave mutually by A, B, C, D, keep the level of electric current and set by the voltage of " VREF " pin of L297.Adopt L297 and L298 cooperating drive stepping motor, combine the advantage that bipolarity drives and copped wave drives, response is fast, efficient is high.Eight diodes among the figure are earial drainage diodes, in order to overcome back-emf, form discharge loop, with the protection driving chip.
Among Fig. 9, POWER is an automobile power source, and FUSE1 is for recovering insurance, and SL24 is an overvoltage protector, and LEDO is a light emitting diode, and LM2576 is a switch power module, and ZY is a reference diode, and VCC is a logic 5v voltage, and VDD is simulation 5v voltage.Power module circuitry provides working power for the The whole control device.
Among Figure 10, TX, RX are respectively from the transmission of Fig. 3 central control module, receive path, be used for transmission, the reception control of communication, OUT-TXD, OUT-RXD are respectively the transmission output of communication and receive output, be connected with the communication interface of outer computer (or other external equipment), realize the communication of control gear and computer.
Figure 11, Figure 12 have described the inclusion body structure that the utility model has damper mechanism.Damper mechanism 8 is installed in a side of inclusion body shell 10, also is shaped on some parallel radiating groove rows 9 and automobile cable general connector on the inclusion body shell.Inclusion body structural type is not limited to presentation style among the figure, can also have many according to the utility model design concept variation or distressed structure.
Figure 13 is present embodiment open loop control schematic representation.Obtaining etc. of the debugging of system and control law all needs flexibly and easily manually open loop to control and supports.Open loop control realizes by program, and this program leaves in the program storage of central processing unit of central control module.When manually open loop is controlled, rotate adjustable potentiometer, the nozzle ring angle of variable geometry turbocharger just changes, and has changed the airflow area like this, thereby has improved the performance of motor.
Figure 14 is a device closed loop control schematic representation.Closed loop control is under the situation of no any artificial interference, installs the nozzle ring angle of controlling variable geometry turbocharger according to the operating mode of motor automatically, and the performance of motor is improved.The closed loop control program leaves in the program storage of central processing unit of central control module.During closed loop control, it is input parameter that device adopts engine speed n and these two parameters of throttle position Sg, and the turbine supercharger nozzle ring aperture is a controlled variable, is controlled variable with engine intake pressure P c, and according in addition temperature correction of intake temperature T.The VGT control system is come the compute control goal pressure according to engine speed n and throttle position Sg, observed pressure and control target pressure are compared, adjust VGT nozzle ring aperture according to pressure difference value, make observed pressure close, so just realized pressure closed loop control to control target pressure.
Pic chip described in the utility model can be selected the eight-bit microcontroller PIC family chip of Microchip company production, the C8051F family chip that Cygnal integrated products company produces for use, its performance and resource can both satisfy the requirement of this device, and its price performance is higher, can also select other functionally similar family chip for use.
Can think that the foregoing description only is described in the mode of enumerating, many this devices according to the utility model design can also be arranged.For example can substitute PIC16C76 in this device with chips such as the band PIC16F876 chip of FlashROM or C8051F021; therefore to one skilled in the art; various changes and change that the utility model is made are conspicuous, can not break away from the protection domain of design of the present utility model and additional claim.
Claims (10)
1. one kind by the inclusion body shell, sensor, electronic control unit, the electric control device that is used for variable geometry turbocharger that control application software and cable are formed, the electronic control unit that is encapsulated in the inclusion body shell connects throttle sensor by cable, engine rotation speed sensor, the engine charge pressure transducer, intake air temperature sensor and host computer, the variable-geometry nozzle location of electronic control unit before by the turbine of actuating device control engine supercharger, it is characterized in that: described electronic control unit is by containing load module, central control module, the output driver module, communication module, compositions such as power module, the central control module that wherein is used for controlling automatically variable geometry turbocharger nozzle ring position is that embedded microcontroller PIC family chip or C8051F family chip and other have the family chip of suitable function, deposits the control program of execution command in its storage.
2. by the described electric control device of claim 1, it is characterized in that described electronic control unit and throttle sensor, engine rotation speed sensor, compressor air inlet machine pressure transducer, intake air temperature sensor are connected, also comprise connected throttle signal processing circuit, the tach signal processing circuit, pressure signal processing circuit, the processes temperature signal circuit.
3. by claim 1 or 2 described electric control devices, it is characterized in that described output driver module is L298 integrated chip and logic control chip L297 or similar chip.
4. by claim 1 or 2 described electric control devices, it is characterized in that described communication module is MAX232 chip or similar chip.
5. by claim 1 or 2 described electric control devices, it is characterized in that described power module is integrated switch power LM2576 or similar performance switch power.
6. by the described electric control device of claim 1 to 5, it is characterized in that described inclusion body shell has damper mechanism.
7. by the described electric control device of claim 1, it is characterized in that described damper mechanism is installed in a side of inclusion body shell, also be shaped on some parallel radiating groove rows and automobile cable general connector on the inclusion body shell.
8. by claim 1 or 2 described electric control devices, it is characterized in that described throttle sensor is RP200 type sensor or similar performance sensor; Described speed probe is a magnetoelectric sensor; Described pressure transducer is HY8101J type sensor or similar performance sensor; Described temperature transducer is HY820JD5 type sensor or similar performance sensor.
9. by claim 1 or 2 described electric control devices, it is characterized in that described central control module has 4 road A/D ALT-CH alternate channels at least, 1 road CCP passage, the 5 tunnel are used for the output channel of control step motor, 1 road SCI serial communication interface.
10. by the described electric control device of claim 1; it is characterized in that the described control program that leaves in the central control module storage with the execution command form is the timer interrupt control routine; it comprises initialization module; signal processing module, stable state MAP module, dynamically MAP module, closed loop control module, open loop control module, export driver module, the protection module that transfinites, communication module, digital PID module, fault display modular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252909 CN2641295Y (en) | 2003-09-25 | 2003-09-25 | Electronic control device used for variable-geometry turbine booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252909 CN2641295Y (en) | 2003-09-25 | 2003-09-25 | Electronic control device used for variable-geometry turbine booster |
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| CN2641295Y true CN2641295Y (en) | 2004-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03252909 Expired - Lifetime CN2641295Y (en) | 2003-09-25 | 2003-09-25 | Electronic control device used for variable-geometry turbine booster |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104359A (en) * | 2013-02-04 | 2013-05-15 | 北京理工大学 | Analog engine pressurization regulating signal generating method |
| CN103485905A (en) * | 2013-06-29 | 2014-01-01 | 哈尔滨安龙迪环保科技有限公司 | Intelligent, quick and accurate electric control system for turbo-charging adjustment |
| CN104423379A (en) * | 2013-09-09 | 2015-03-18 | 英飞凌科技股份有限公司 | Systems and methods for internal and external error detection in sensor output interfaces |
| CN107916998A (en) * | 2017-12-18 | 2018-04-17 | 石小亮 | A kind of micro turbine engine dcs |
-
2003
- 2003-09-25 CN CN 03252909 patent/CN2641295Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104359A (en) * | 2013-02-04 | 2013-05-15 | 北京理工大学 | Analog engine pressurization regulating signal generating method |
| CN103104359B (en) * | 2013-02-04 | 2015-05-27 | 北京理工大学 | Analog engine pressurization regulating signal generating method |
| CN103485905A (en) * | 2013-06-29 | 2014-01-01 | 哈尔滨安龙迪环保科技有限公司 | Intelligent, quick and accurate electric control system for turbo-charging adjustment |
| CN104423379A (en) * | 2013-09-09 | 2015-03-18 | 英飞凌科技股份有限公司 | Systems and methods for internal and external error detection in sensor output interfaces |
| US9846191B2 (en) | 2013-09-09 | 2017-12-19 | Infineon Technologies Ag | Systems and methods for internal and external error detection in sensor output interfaces |
| CN107916998A (en) * | 2017-12-18 | 2018-04-17 | 石小亮 | A kind of micro turbine engine dcs |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130925 Granted publication date: 20040915 |