CN2330795Y - Caburettor type gasoline engine exhaust purifying device - Google Patents
Caburettor type gasoline engine exhaust purifying device Download PDFInfo
- Publication number
- CN2330795Y CN2330795Y CN 97249027 CN97249027U CN2330795Y CN 2330795 Y CN2330795 Y CN 2330795Y CN 97249027 CN97249027 CN 97249027 CN 97249027 U CN97249027 U CN 97249027U CN 2330795 Y CN2330795 Y CN 2330795Y
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- Prior art keywords
- control unit
- electronic control
- sensor
- valve
- carburetor
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- Expired - Fee Related
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model relates to a carburettor type gasoline engine exhaust purifying device which comprises an air feeding valve, an air cleaner, a carburator, a catalytic converter, an electronic control unit, a choke position, the sensors of a manifold pressure sensor, a fluid cooling temperature sensor, a speed sensor, an oxygen sensor, etc. an idle speed cut-off valve and an ignition coil. The sensors are respectively arranged on channels between the carburetor and the electronic control unit, the engine and the electronic control unit, and the electronic control unit and the engine into the gas passage of the catalytic converter by signal lines. With the device used, the exhaust emission of a car achieves national pertinent regulations in 1998.
Description
The utility model relates to a kind of carburetor type petrol engine Exhaust gas purifying device, belongs to technical field of automotive electronics.
At present, the Carburetor oil feeding type petrol engine of domestic production, employing be mostly mechanical type DI and mechanical Carburetor.Because the control accuracy of machinery type control ignition advance angle and air fuel ratio is low, the waste gas that causes motor to be discharged is difficult to the satisfied requirement of new legislation to the noxious emission prescribed limits that be about to implement.The computer-controlled ignition system that simple function is abroad arranged, the closed loop control air fuel ratio is carried out in tonifying Qi after also being used in closure, reduce the method for exhaust contaminant, but a single-chip microcomputer of no use is with the control of the idling cut-off valve of IGNITION CONTROL, Carburetor, and adopt lambda sensor, catalyst, tonifying Qi is carried out the air fuel ratio closed loop control and is formed and have the device that above-mentioned functions is carried out Comprehensive Control behind closure.
The purpose of the utility model design is a kind of one-chip computer control gear of design, controls petrolic ignition timing, idling oil circuit cut-off valve, makes the discharging of automobile reach the European ECE15-04 emission regulation demands that is equivalent to that was about to enforcement in 98 years.On this basis, increase the air fuel ratio closed loop control system that aeration valve, lambda sensor and catalyst are formed, can make the discharging of automobile reach 2000 and be equivalent to European ECER83 emission regulation demands.
The carburetor type petrol engine Exhaust gas purifying device of the utility model design comprises air-strainer, Carburetor, electronic control unit, throttle position sensor, manifold pressure sensor, cooling-water temperature transmitter, speed probe, idling oil circuit cut-off valve and spark coil.Described throttle position sensor, manifold pressure sensor and idling oil circuit cut-off valve place between Carburetor and the electronic control unit by signaling line respectively, and cooling-water temperature transmitter, speed probe and spark coil place between motor and the electronic control unit by signaling line respectively.
Used electronic control unit in the carburetor type petrol engine Exhaust gas purifying device of the utility model design comprises power supply unit, stimulus part, signal processing and final controlling element part.5 volts of voltages that power supply unit wherein becomes electronic control unit to use automobile-used 12 overhead accumulator voltage transitions.Give single-chip microcomputer U1 behind the conditioning circuit of input signal via electric capacity, resistance composition of stimulus part with speed probe, manifold pressure sensor, throttle position sensor, cooling-water temperature transmitter.Signal processing part is divided into single-chip microcomputer U1, and sensor signal is handled back output.The final controlling element output receives the control signal from single-chip microcomputer, by power driving circuit drive ignition coil, the work of idling oil circuit cut-off valve.
The utility model is the emission regulation demands that further satisfies country's enforcement in 2000, thereby designed another kind of carburetor type petrol engine Exhaust gas purifying device, comprise aeration valve, air-strainer, Carburetor, catalyst, electronic control unit, throttle position switch, manifold pressure sensor, cooling-water temperature transmitter, speed probe, lambda sensor, idling oil circuit cut-off valve and spark coil.Described throttle position sensor, manifold pressure sensor and idling oil circuit cut-off valve place between Carburetor and the electronic control unit by signaling line respectively.Cooling-water temperature transmitter, speed probe and spark coil place between motor and the electronic control unit by signaling line respectively, and lambda sensor places electronic control unit and motor between the catalyst gas channel by signaling line.
Used electronic control unit comprises power supply unit, stimulus part, signal processing and do-part in the above-mentioned Exhaust gas purifying device.5 volts of voltages that power supply unit wherein becomes electronic control unit to use automobile-used 12 overhead accumulator voltage transitions.Give single-chip microcomputer U1 behind the conditioning circuit of input signal via electric capacity, resistance composition of stimulus part with speed probe, manifold pressure sensor, throttle position sensor, cooling-water temperature transmitter, lambda sensor.Signal processing part is divided into single-chip microcomputer U1, and sensor signal is handled back output.The final controlling element output receives the control signal from single-chip microcomputer, promotes spark coil, idling oil circuit cut-off valve and aeration valve work by power driving circuit.
The carburetor engine Exhaust gas purifying device of the utility model design has saved traditional distributor, and has changed no distributor direct ignition system into.During the motor operation, the signal that electronic control unit provides according to engine rotation speed sensor, manifold pressure sensor, determine the basic ignition advance angle, after the signal that provides according to cooling-water temperature transmitter is revised the basic ignition advance angle again, output drives the distributorless ignition coil, accurately controls each cylinder of motor and lights a fire exactly.Utilize the idling oil circuit cut-off valve on the Carburetor,, or when the numerical value of engine speed that reaches setting and mainfold presure, idling oil circuit solenoid valve is turn-offed, cut off the idling oil circuit in engine speed that reaches setting and throttle position.Motor under partial load condition commonly used during operation with Carburetor the mixing controlled atmosphere of confession dense, the air fuel ratio when making under this operating mode operation is near chemically correct fuel, but less than chemically correct fuel.When motor moved under this operating mode, single-chip microcomputer utilized the method adjustment of tonifying Qi to send into the interior air quantity of intake manifold according to the feedback signal of lambda sensor, carries out closed loop control, made air fuel ratio remain at variation near the small range of theoretical empty combustion.
Description of drawings:
Fig. 1 is the structural representation of the utility model design.
Fig. 2 is the circuit theory diagrams of electronic control unit in the device shown in Figure 1.
Fig. 3 is the structural representation of another program of the utility model design.
Fig. 4 is the circuit theory diagrams of electronic control unit in the device shown in Figure 3
Below in conjunction with accompanying drawing, introduce content of the present utility model in detail.Among Fig. 1 and Fig. 3, the 1st, aeration valve, the 2nd, air-strainer, the 3rd, Carburetor, the 4th, motor, the 5th, catalyst, the 6th, throttle position sensor, the 7th, manifold pressure sensor, the 8th, cooling-water temperature transmitter, the 9th, speed probe, the 10th, lambda sensor, the 11st, idling oil circuit cut-off valve, the 12nd, spark coil, the 13rd, electronic control unit, 14 is gas channel, 15 is signalling channel.Among Fig. 3 and 4, the model of single-chip microcomputer is MC68HC11, or the single-chip microcomputer of other models.
Below in conjunction with accompanying drawing, introduce major function of the present utility model and working principle in detail:
1. ignition timing control
During the motor operation, the signal that electronic control unit 13 provides according to engine rotation speed sensor 9, manifold pressure sensor 7, in storage, find the basic ignition advance angle under the corresponding operating conditions, after the signal that provides according to cooling-water temperature transmitter 8 is revised the basic ignition advance angle again, output controlling and driving signal is given distributorless ignition coil 12, accurately controls each cylinder of motor and lights a fire accurately.
2. forced idling oil-break control
When motor moved at BC valve, engine speed was higher, and closure is in closed condition, and at this moment degree of vacuum is very high in the intake manifold, and excess fuel is sucked out from the idling oil circuit, causes the mixed gas overrich, deterioration of emission.This control function is, electronic control unit 13 is according to the speed probe 9 of motor and the position sensing 6 of closure, perhaps the numerical value of demarcating according to the speed probe 9 and the manifold pressure sensor 7 of motor (deciding on concrete motor) is controlled idling oil circuit cut-off valve, turn-offs the idling oil circuit.The discharging of motor is significantly improved.
3. air-fuel ratio feedback control
With motor under partial load condition commonly used during operation Carburetor confession the mixing controlled atmosphere dense, the air fuel ratio when making under this operating mode operation is near chemically correct fuel, but little chemically correct fuel.When motor moves under this operating mode, electronic control unit 13, according to dense, the rare feedback signal of lambda sensor 10 output indication air fuel ratios, regulate air compensation by aeration valve 1 (duty ratio valve or stepper motor air valve), carry out closed loop system to entering in the cylinder air fuel ratio of mixed gas, air fuel ratio is remained near the chemically correct fuel change in a small range.At this moment, catalyst most effective, the waste gas that motor is discharged can make the pollutant in the waste gas be reduced fully and oxidation by catalyst the time, becomes innocuous gas and discharges.
Fig. 2 is the application example circuit theory diagrams of the electronic control unit of device shown in Figure 1.
Electronic control unit can be divided into power supply unit, stimulus part, signal processing and final controlling element output.
1. power supply unit: power circuit is on the top of figure.Automobile-used 12V battery tension is adjusted intergrated circuit LM2931 to power supply and is converted to 5V voltage through reverse connection of accumulator protection diode D4, capacitance-resistance filter network R8, R9, C9, transient protective diode Z1, offers electronic control unit and uses.
2. stimulus part: the input signal of the rotating speed in figure left side, mainfold presure, throttle position, coolant temperature is given single-chip microcomputer MC68HC11 by behind the conditioning circuit.
3. signal processing: the signal that single-chip microcomputer is sent various sensors here, handle the back and promoting various final controlling element work by drive circuit.
4. final controlling element output: the control signal of single-chip microcomputer output promotes spark coil, the work of idling oil circuit cut-off valve by power driving circuit.
Fig. 4 is the application example circuit theory diagrams of the electronic control unit of device shown in Figure 3.
Electronic control unit can be divided into power supply unit, stimulus part, signal processing and final controlling element output.
1. power supply unit: power circuit is on the top of figure.Automobile-used 12V battery tension is adjusted intergrated circuit LM2931 to power supply and is converted to 5V voltage through reverse connection of accumulator protection diode D4, capacitance-resistance filter network R8, R9, C9, transient protective diode Z1, offers electronic control unit and uses.
2. stimulus part: the input signal of the rotating speed in figure left side, mainfold presure, throttle position, coolant temperature, lambda sensor is given single-chip microcomputer MC68HC11 by behind the conditioning circuit.
3. signal processing: the signal that single-chip microcomputer is sent various sensors here, handle the back and promoting various final controlling element work by drive circuit.
4. final controlling element output: the control signal of single-chip microcomputer output promotes spark coil, idling cut-off valve, aeration valve work by power driving circuit.
Claims (1)
1, a kind of carburetor type petrol engine Exhaust gas purifying device, comprise aeration valve, air-strainer, Carburetor, catalyst, it is characterized in that also comprising electronic control unit, throttle position sensor, manifold pressure sensor, cooling-water temperature transmitter, speed probe, lambda sensor, idling cut-off valve and spark coil; Described throttle position sensor, manifold pressure sensor and idling cut-off valve place between Carburetor and the electronic control unit by signaling line respectively, cooling-water temperature transmitter, speed probe and spark coil place between motor and the electronic control unit by signaling line respectively, and lambda sensor places electronic control unit and motor to the passage between the catalyst gas channel by signaling line; Described electronic control unit comprises power supply unit, stimulus part, signal processing and do-part; 5 volts of voltages that power supply unit wherein becomes electronic control unit to use automobile-used 12 overhead accumulator voltage transitions; Give single-chip microcomputer U1 behind the conditioning circuit of input signal via electric capacity, resistance composition of stimulus part with speed probe, manifold pressure sensor, throttle position sensor, cooling-water temperature transmitter, lambda sensor; Signal processing part is divided into single-chip microcomputer U1, and sensor signal is handled back output; The final controlling element output receives the signal from single-chip microcomputer, promotes spark coil, idling oil circuit cut-off valve and aeration valve work by power driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249027 CN2330795Y (en) | 1997-12-10 | 1997-12-10 | Caburettor type gasoline engine exhaust purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249027 CN2330795Y (en) | 1997-12-10 | 1997-12-10 | Caburettor type gasoline engine exhaust purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2330795Y true CN2330795Y (en) | 1999-07-28 |
Family
ID=33956049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97249027 Expired - Fee Related CN2330795Y (en) | 1997-12-10 | 1997-12-10 | Caburettor type gasoline engine exhaust purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2330795Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400836C (en) * | 2002-03-19 | 2008-07-09 | 雅马哈发动机株式会社 | Intake air negative pressure detector for internal combustion engine |
| CN100439674C (en) * | 2003-10-31 | 2008-12-03 | 诺沃皮尼奥内控股有限公司 | Control system of an internal combustion engine |
| CN104564366A (en) * | 2015-01-21 | 2015-04-29 | 常州机电职业技术学院 | Gas cut-off flameout device used for carburetor engine |
| US9464588B2 (en) | 2013-08-15 | 2016-10-11 | Kohler Co. | Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine |
| US10054081B2 (en) | 2014-10-17 | 2018-08-21 | Kohler Co. | Automatic starting system |
| CN115163314A (en) * | 2017-05-27 | 2022-10-11 | 北京联合大学 | Single-cylinder carburetor type engine flameout and fuel cut-off control device and control method thereof |
-
1997
- 1997-12-10 CN CN 97249027 patent/CN2330795Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400836C (en) * | 2002-03-19 | 2008-07-09 | 雅马哈发动机株式会社 | Intake air negative pressure detector for internal combustion engine |
| CN100439674C (en) * | 2003-10-31 | 2008-12-03 | 诺沃皮尼奥内控股有限公司 | Control system of an internal combustion engine |
| US9464588B2 (en) | 2013-08-15 | 2016-10-11 | Kohler Co. | Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine |
| US10240543B2 (en) | 2013-08-15 | 2019-03-26 | Kohler Co. | Integrated ignition and electronic auto-choke module for an internal combustion engine |
| US10794313B2 (en) | 2013-08-15 | 2020-10-06 | Kohler Co. | Integrated ignition and electronic auto-choke module for an internal combustion engine |
| US10054081B2 (en) | 2014-10-17 | 2018-08-21 | Kohler Co. | Automatic starting system |
| CN104564366A (en) * | 2015-01-21 | 2015-04-29 | 常州机电职业技术学院 | Gas cut-off flameout device used for carburetor engine |
| CN104564366B (en) * | 2015-01-21 | 2018-06-22 | 常州机电职业技术学院 | Blanket of holding one's breath on carburetor engine |
| CN115163314A (en) * | 2017-05-27 | 2022-10-11 | 北京联合大学 | Single-cylinder carburetor type engine flameout and fuel cut-off control device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |