CN108005803A - A kind of methanol controller of multi pass acquisition pattern - Google Patents
A kind of methanol controller of multi pass acquisition pattern Download PDFInfo
- Publication number
- CN108005803A CN108005803A CN201711478308.7A CN201711478308A CN108005803A CN 108005803 A CN108005803 A CN 108005803A CN 201711478308 A CN201711478308 A CN 201711478308A CN 108005803 A CN108005803 A CN 108005803A
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- China
- Prior art keywords
- methanol
- oxide
- output terminal
- sensor
- semiconductor drive
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- 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
- F02D41/30—Controlling fuel injection
Abstract
The invention discloses a kind of methanol controller of multi pass acquisition pattern, including Sensor section, common integrally disposed chip part, power unit, sensor input signal process part, CAN bus communication part and methanol pump and methanol nozzle metal-oxide-semiconductor drive part on same circuit board is further included；The CAN bus communication part, which is divided into, is connected to the CAN communication circuit b that CAN communication circuit a and calibration diagnostic port of the vehicle body CAN bus for obtaining the message signals such as water temperature on vehicle body, liquid level, rotating speed are used to facilitate technical staff's real time monitoring methanol controller operating status.The present invention is in Sensor section or sensor input signal process part partial failure, additionally it is possible to the accurate injection of methanol is realized by CAN bus communication part, intelligence degree is very high, greatly extends the service life of device.
Description
Technical field
The present invention relates to the technical field of automobile engine of diesel oil methanol hybrid power, particularly a kind of multi pass acquisition pattern
Methanol controller.
Background technology
Diesel engine obtains extensive use with its excellent dynamic property, economy and reliability, but NOx and soot emissions this
That length that disappear restrict the development of diesel engine.Methanol is a kind of oxygenated fuel, and octane number is high, can improve burning, reduce pollutant
Discharge, and menu cost is low, and versatility is good, it is considered to be very promising clean alternative fuel.Methanol-diesel dual-fuel is
Converted on the basis of diesel engine, in general, one is to need to install a set of methanol feed system, including methanol tank, oil pump, pipeline additional
With methanol injector；Second, need to install a set of electronic control system additional, for controlling the injection of methanol and diesel oil.Methanol-diesel oil
Double fuel repacking cost is low and easy to implement.Methanol-Diesel Dual-Fuel Engine is while diesel engine higher thermal efficiency is kept
Soot emissions can be greatly reduced.When there is no methanol, moreover it is possible to switch back into pure diesel fuel mode operation.The purer diesel oil of dual fuel mode
Pattern operation cost reduces, and is conducive to play existing methanol production capacity, therefore develops dual fuel engine with good economic effect
Benefit and social benefit.
The methanol controller of existing market using methanol nozzle is arranged on engine air inlet tube, passes through the automatically controlled list of methanol more
First ECU controls methanol injection, forms methanol air premix gas and enters cylinder and ignited by direct injection diesel.To realize efficient, cleaning
Burning is, it is necessary to which injecting time, injection pressure and emitted dose to methanol are accurately controlled.Conventional research shows, passes through reality
When gather engine speed, throttle, water temperature etc. numerical quantities and determine therefrom that the nozzle parameter of methanol, it can be ensured that DMCC starts
Machine is reliably and securely run.In the experimental stage, the signal such as rotating speed, throttle introduces ECU, and ECU sends control signal, such as controls
The opening and closing of methanol pump, nozzle processed, is all that error rate height is, it is necessary to stronger by simply making circuit, and installation process complexity by oneself
Professional knowledge；Also the signal acquisition part of the numerical quantities of engine speed, throttle, water temperature etc. is only right therewith using function
The sensor answered carrys out the collection into row information, if some sensor degradation fails, can largely effect on the emitted dose of methanol, so that
The performance of diesel engine.
Compel so a kind of methanol fuel system controller that can realize multi pass acquisition function of research and development becomes a kind of
It is essential and asks.
The content of the invention
The technical problem to be solved in the invention there is provided a kind of methanol controller of multi pass acquisition pattern, to solve mesh
The methanol controller installation process of preceding in the market is complicated, and the numerical quantities information of engine speed, throttle, water temperature etc. can only pass through list
The problem of road gathers, to improve the accuracy of spray of methanol.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of methanol controller of multi pass acquisition pattern, including for detecting engine crankshaft rotating speed, water temperature and methanol
The Sensor section of liquid level, it is defeated to further include common integrally disposed chip part on same circuit board, power unit, sensor
Enter signal processing, CAN bus communication part and methanol pump and methanol nozzle metal-oxide-semiconductor drive part；The CAN bus is led to
News part, which is divided into, is connected to the CAN communication that vehicle body CAN bus is used to obtain the message signals such as water temperature on vehicle body, liquid level, rotating speed
Circuit a and calibration diagnostic port are used for the CAN communication circuit for facilitating technical staff to monitor methanol controller operating status in real time
b；The output terminal of the Sensor section is connected to the input terminal of sensor input signal process part, at sensor input signal
The output terminal of reason part is connected to the input terminal of chip part, and the feeder ear of power unit is connected to chip part and sensing
The controlled end of device input signal process part, methanol pump and methanol nozzle metal-oxide-semiconductor drive part is connected to the output of chip part
End, the output terminal of CAN communication circuit a are connected to the input terminal of chip part, and the input terminal of CAN communication circuit b is connected to chip
Partial output terminal.
Further optimisation technique scheme, the sensor input signal process part include being used to turn speed of crankshaft signal
It is changed to for the Hall voltage conversion circuit of the hall signal of chip part Acquisition Detection and for Sensor section to be detected
Voltage conversion is the analog voltage conversion circuit of chip partial detection signals；The output terminal and mould of the Hall voltage conversion circuit
The output terminal for intending voltage conversion circuit is connected to the input terminal of chip part.
Further optimisation technique scheme, the power unit include the LDO power supply chips for out-put supply, protection electricity
Road, filter circuit, for detect mains electricity signal signal sample circuit that whether power supply chip is operated in normal range (NR) and
Pass through the battery power for protecting circuit and filter circuit is power supply chip power supply.
Further optimisation technique scheme, the methanol pump and methanol nozzle metal-oxide-semiconductor drive part include being used to drive methanol
Pump methanol pump metal-oxide-semiconductor drive part, the methanol nozzle metal-oxide-semiconductor drive part and use for driving methanol nozzle operation of operation
To detect driving current to be protected from the electric signal sample circuit of overcurrent；The controlled end of the methanol pump metal-oxide-semiconductor drive part
The output terminal of chip part is connected to the controlled end of methanol nozzle metal-oxide-semiconductor drive part.
It is as follows as a result of above technical scheme, the invention technological progress.
Present invention design is unique, structure is novel, and installation is simple, and water temperature, liquid level letter are detected except through Sensor section
Breath is transmitted to analog voltage conversion circuit to carry out AD samplings, and the speed of crankshaft signal transmission detected by Sensor section is extremely
Hall voltage conversion circuit, sensor input signal process part is again by information after analog quantity information and speed of crankshaft signal processing
Master chip part, master chip part control methanol pump and methanol nozzle metal-oxide-semiconductor drive part operation are fed back to, and then to open first
Alcohol pumps and methanol nozzle is carried out outside methanol injection；The water in vehicle body CAN bus can also be received by CAN bus communication part
Receive information number is simultaneously fed back to master chip part by the CAN message signal such as temperature, liquid level, rotating speed, CAN bus communication part, and then
To carry out the accurate injection of methanol.So that the present invention is in Sensor section or sensor input signal process part partial failure
When, additionally it is possible to the accurate injection of methanol is realized by CAN bus communication part, intelligence degree is very high, greatly extends dress
The service life put.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is master chip part-structure schematic diagram of the present invention；
Fig. 3 is power unit structure diagram of the present invention；
Fig. 4 is methanol pump of the present invention and methanol nozzle metal-oxide-semiconductor drive part circuit diagram；
Fig. 5 is Hall voltage conversion circuit figure in sensor input signal process part of the present invention；
Fig. 6 is analog voltage conversion circuit figure in sensor input signal process part of the present invention；
Fig. 7 is CAN bus communication part structure diagram of the present invention.
Wherein：1st, master chip part, 2, power unit, 3, sensor input signal process part, 4, methanol pump and methanol
Nozzle metal-oxide-semiconductor drive part, 5, CAN bus communication part.
Embodiment
Below in conjunction with specific embodiment, the present invention will be described in further detail.
A kind of methanol controller of multi pass acquisition pattern, with reference to shown in Fig. 1 to Fig. 7, including Sensor section, chip part
1st, power unit 2, sensor input signal process part 3, CAN bus communication part 5 and methanol pump and methanol nozzle metal-oxide-semiconductor
Drive part 4.Chip part 1, power unit 2, sensor input signal process part 3, CAN bus communication part 5 and first
Alcohol pumps and methanol nozzle metal-oxide-semiconductor drive part 4 is common integrally disposed on same circuit board.
Sensor section is used to detect engine crankshaft rotating speed, water temperature and methanol liquid level, the output terminal of Sensor section
The input terminal of sensor input signal process part 3 is connected to, detection information can be transmitted to sensor input signal processing
Part 3.Sensor section includes crankshaft sensor, cooling-water temperature sensor, liquid level sensor, and crankshaft sensor is used to detect engine
Speed of crankshaft, cooling-water temperature sensor are used to that the temperature of water will to be surveyed, and liquid level sensor is used for the liquid level for detecting methanol.
Power unit 2 include LDO power supply chips, protection circuit, filter circuit, mains electricity signal signal sample circuit and
Battery power.The feeder ear of power unit 2 is connected to chip part 1 and sensor input signal process part 3.LDO electricity
Source chip can export 5V power supplys, for powering for sensor input signal process part 3 and chip part 1；Protect circuit bag
Include anti-electric current, voltage and PMOS reverse connection prevention protection circuits and device；Mains electricity signal signal sample circuit is used to detect power supply core
Whether piece is operated in normal range (NR)；Battery power is by protecting circuit and filter circuit to power for power supply chip.
Methanol pump and methanol nozzle metal-oxide-semiconductor drive part 4 include methanol pump metal-oxide-semiconductor drive part, methanol nozzle metal-oxide-semiconductor drives
Dynamic part and electric signal sample circuit.Methanol pump metal-oxide-semiconductor drive part is used to drive methanol pump operation, methanol nozzle metal-oxide-semiconductor
Drive part is used to drive methanol nozzle operation, and battery power ensures first by protecting circuit to power to the flash of drive circuit
Alcohol pumps and methanol nozzle metal-oxide-semiconductor drive part normal work.Electric signal sample circuit is used for detecting driving current, anti-for protecting
Only overcurrent.
In order to realize the multi pass acquisition function of the present invention, sensor input signal process part 3 is set up separately for Hall electricity
Voltage conversion circuit and analog voltage conversion circuit.The output terminal of Hall voltage conversion circuit is connected to the input terminal of chip part 1,
For being converted to speed of crankshaft signal for the hall signal of 1 Acquisition Detection of chip part；Analog voltage conversion circuit it is defeated
Outlet is connected to the input terminal of chip part 1, for Sensor section detection voltage conversion can be detected letter for chip part 1
Number.So as to so that the present invention can carry out AD samplings by analog voltage conversion circuit, and then obtain water temperature, first on car
The analog signals such as alcohol liquid level, can be converted to hall signal by crankshaft signal by Hall voltage conversion circuit and carry out rotating speed inspection
Survey.
In addition, the present invention is made that improvement to CAN bus communication part 5, and CAN bus communication part 5 is divided into
Two-way CAN communication circuit, including CAN communication circuit a and CAN communication circuit b.It is total that CAN communication circuit a is connected to vehicle body CAN
Line, for obtaining the message signals such as water temperature on vehicle body, liquid level, rotating speed, the AD without carrying out analog quantity is gathered；CAN communication circuit a
Output terminal be connected to the input terminal of chip part 1 so that CAN communication circuit a can will obtain water temperature on vehicle body, liquid level, turn
The message signals such as speed feed back to master chip part 1.CAN communication circuit b demarcates diagnostic port, is connected with computer host computer,
For facilitating technical staff to monitor methanol controller operating status in real time, for carrying out MAP data scalings, program renewal；CAN leads to
The input terminal of news circuit b is connected to the output terminal of chip part 1 so that CAN communication circuit b can be used for giving technical calibration personnel
Carry out the functions such as MAP data scalings, error diagnosis, fault detect, program burn writing.
The practical work process of the present invention is as follows.
1st, methanol controller is connected into the required power supply in periphery, methanol pump, methanol nozzle, and is communicated by CAN bus
Part is attached with vehicle body CAN bus and computer host computer respectively.
2nd, be powered operation, and power unit 2 is responsible for master chip 1 and the power supply of sensor input signal process part.Sensor
Partly by the sensor of each several part, detect methanol water temperature, liquid level, start bent axle machine rotary speed information, and it is defeated by sensor
Enter signal processing 3 and be converted to analog quantity to be transferred to master chip part 1, master chip part 1 receives water temperature, liquid level, starts
After bent axle machine tach signal, MAP computation of table lookup is carried out, current methanol nozzle emitted dose in real time is calculated, is looked for according to result of calculation
To current methanol injecting time information, methanol pump is opened in real time and methanol nozzle carries out methanol injection, meets that diesel oil is fired with methanol
The hybrid power of material.
3rd, in addition, methanol controller can also receive the water in vehicle body CAN bus by CAN bus communication part
Receive information number is simultaneously fed back to master chip part 1 by the CAN message signal such as temperature, liquid level, rotating speed, CAN bus communication part, and then
Master chip part 1 controls methanol pump and methanol nozzle metal-oxide-semiconductor drive part 4 to realize to methanol pump and methanol spray after MAP tables look-up
The methanol injection of mouth.
In operational process, if occurring, control is abnormal, and methanol controller will produce an error code according to fault condition, and lead to
Cross CAN bus communication part and be transmitted to vehicle body master controller, facilitate technical staff to read and solve, processing.It is meanwhile total by CAN
CAN communication circuit b calibration diagnostic ports in line communication part, technical staff can monitor the operation shape of methanol controller in real time
State, changes MAP value, is demarcated, detection failure etc..
Claims (3)
1. a kind of methanol controller of multi pass acquisition pattern, including for detecting engine crankshaft rotating speed, water temperature and methanol solution
The Sensor section of position, it is characterised in that：Further include common integrally disposed in the chip part on same circuit board（1）, power supply
Part（2）, sensor input signal process part（3）, CAN bus communication part（5）And methanol pump and methanol nozzle metal-oxide-semiconductor
Drive part（4）；The CAN bus communication part（5）Be divided into be connected to vehicle body CAN bus be used for obtain water temperature on vehicle body,
The CAN communication circuit a and calibration diagnostic port of the message signals such as liquid level, rotating speed are used to facilitate technical staff to monitor methanol in real time
The CAN communication circuit b of controller operating status；The output terminal of the Sensor section is connected to sensor input signal processing unit
Point（3）Input terminal, sensor input signal process part（3）Output terminal be connected to chip part（1）Input terminal, power supply
Part（2）Feeder ear be connected to chip part（1）With sensor input signal process part（3）, methanol pump and methanol
Nozzle metal-oxide-semiconductor drive part（4）Controlled end be connected to chip part（1）Output terminal, the output terminal of CAN communication circuit a connects
It is connected to chip part（1）Input terminal, the input terminal of CAN communication circuit b is connected to chip part（1）Output terminal.
A kind of 2. methanol controller of multi pass acquisition pattern according to claim 1, it is characterised in that：The sensor is defeated
Enter signal processing（3）Including for being converted to speed of crankshaft signal for chip part（1）The Hall letter of Acquisition Detection
Number Hall voltage conversion circuit and for by Sensor section detection voltage conversion be chip part（1）Detect the mould of signal
Intend voltage conversion circuit；The output terminal of the Hall voltage conversion circuit and the output terminal of analog voltage conversion circuit connect respectively
In chip part（1）Input terminal.
A kind of 3. methanol controller of multi pass acquisition pattern according to claim 1, it is characterised in that：The methanol pump and
Methanol nozzle metal-oxide-semiconductor drive part（4）Including the methanol pump metal-oxide-semiconductor drive part for driving methanol pump operation, for driving
The methanol nozzle metal-oxide-semiconductor drive part of methanol nozzle operation and for detecting driving current to be protected from the electric signal of overcurrent
Sample circuit；The controlled end of the methanol pump metal-oxide-semiconductor drive part and the controlled end of methanol nozzle metal-oxide-semiconductor drive part connect respectively
It is connected to chip part（1）Output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478308.7A CN108005803A (en) | 2017-12-29 | 2017-12-29 | A kind of methanol controller of multi pass acquisition pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478308.7A CN108005803A (en) | 2017-12-29 | 2017-12-29 | A kind of methanol controller of multi pass acquisition pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005803A true CN108005803A (en) | 2018-05-08 |
Family
ID=62049085
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711478308.7A Withdrawn CN108005803A (en) | 2017-12-29 | 2017-12-29 | A kind of methanol controller of multi pass acquisition pattern |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2298060A1 (en) * | 1999-02-05 | 2000-08-05 | Rem Technology Inc. | Integrated monitoring, control, and shutdown system |
| EP2325465A1 (en) * | 2009-11-24 | 2011-05-25 | Delphi Technologies Holding S.à.r.l. | Fuel injector communication system |
| CN104727960A (en) * | 2015-03-27 | 2015-06-24 | 天津大学 | Control harness of methanol fuel system of diesel/methanol compound combustion engine |
| CN106051182A (en) * | 2016-08-23 | 2016-10-26 | 无锡隆盛科技股份有限公司 | Intelligent butterfly valve with CAN (controller area network) bus communication function |
| CN106744681A (en) * | 2016-12-08 | 2017-05-31 | 华中科技大学 | A kind of vehicle-mounted methanol cracking reactor control system |
| US20170292467A1 (en) * | 2016-04-08 | 2017-10-12 | Infineon Technologies Ag | Control infrastructure for automotive applications |
| CN207660709U (en) * | 2017-12-29 | 2018-07-27 | 无锡隆盛科技股份有限公司 | A kind of methanol controller of multi pass acquisition pattern |
-
2017
- 2017-12-29 CN CN201711478308.7A patent/CN108005803A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2298060A1 (en) * | 1999-02-05 | 2000-08-05 | Rem Technology Inc. | Integrated monitoring, control, and shutdown system |
| EP2325465A1 (en) * | 2009-11-24 | 2011-05-25 | Delphi Technologies Holding S.à.r.l. | Fuel injector communication system |
| CN104727960A (en) * | 2015-03-27 | 2015-06-24 | 天津大学 | Control harness of methanol fuel system of diesel/methanol compound combustion engine |
| US20170292467A1 (en) * | 2016-04-08 | 2017-10-12 | Infineon Technologies Ag | Control infrastructure for automotive applications |
| CN106051182A (en) * | 2016-08-23 | 2016-10-26 | 无锡隆盛科技股份有限公司 | Intelligent butterfly valve with CAN (controller area network) bus communication function |
| CN106744681A (en) * | 2016-12-08 | 2017-05-31 | 华中科技大学 | A kind of vehicle-mounted methanol cracking reactor control system |
| CN207660709U (en) * | 2017-12-29 | 2018-07-27 | 无锡隆盛科技股份有限公司 | A kind of methanol controller of multi pass acquisition pattern |
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Application publication date: 20180508 |