CN202031727U - Electric control multipoint sequential gas injection and supply system - Google Patents
Electric control multipoint sequential gas injection and supply system Download PDFInfo
- Publication number
- CN202031727U CN202031727U CN2011201310524U CN201120131052U CN202031727U CN 202031727 U CN202031727 U CN 202031727U CN 2011201310524 U CN2011201310524 U CN 2011201310524U CN 201120131052 U CN201120131052 U CN 201120131052U CN 202031727 U CN202031727 U CN 202031727U
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- gas
- ecu
- combustion gas
- sensor
- supply system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model relates to an electric control multipoint sequential gas injection and supply system. A gas outlet of a gas bottle is sequentially connected with an electromagnetic valve of the gas bottle, a secondary reducing valve, a gas filter and a gas injection nozzle through gas pipes; an electric control system comprises an original gasoline ECU (electric control unit) and a gas ECU connected with the original gasoline ECU; different input ends of the gas ECU are respectively connected with a cooling liquid temperature sensor, a throttle position sensor, a crankshaft rotating speed sensor, a gas inlet pressure sensor, an oxygen sensor and a gas temperature pressure sensor which are arranged on a CNG (compressed natural gas) automobile engine; and the different input ends of the gas ECU are also connected with a CNG gas change-over switch; the output end of the gas ECU is connected with a gasoline nozzle and a gas nozzle respectively; a one-way electromagnetic valve is added on a high pressure gas pipeline of the opening of the gas bottle; and the opening and closing of the one-way electromagnetic valve are controlled by the gas ECU. The electric control multipoint sequential gas injection and supply system adopts the advanced technologies such as performance improvement, emission control, fault diagnosis and the like; the control of the electromagnetic valve is added on the high pressure gas pipeline, so that the CNG gas supply system is safer; and the gas ECU is ensured to meet requirements of power, economical efficiency and emission under various working conditions.
Description
Technical field
The utility model relates to a kind of engine electric-controlled fuel gas multipoint sequencial jet system.Belong to International Classification of Patents F02D field.
Background technique
Because global petroleum resources are day by day poor and pollution of atmosphere is on the rise, the substitute fuel Study on Technology is becoming the important research direction in engine research field.At present, rock gas is widely used gradually as main clean energy resource, further develops the main direction that high performance CNG automatical control system becomes natural gas engine research.
Summary of the invention
The purpose of this utility model is to provide a kind of engine electric-controlled fuel gas multipoint sequencial jet system that satisfies emission request, the Security of raising CNG air supply system.
The purpose of this utility model is achieved through the following technical solutions.
A kind of electric-controlled gas multipoint sequential injection air supply system, it comprises gas cylinder, gas cylinder solenoid valve, second depressurized valve, combustion gas filter cleaner, the gas nozzle that rock gas is housed, and the air outlet of gas cylinder is by tracheae be linked in sequence successively gas cylinder solenoid valve, second depressurized valve, combustion gas filter cleaner and gas nozzle; Electronic control system comprises former car gasoline ECU control unit and the combustion gas ECU control unit that is attached thereto, the different input ends of combustion gas ECU control unit respectively be installed in the CNG motor car engine on cooling-water temperature transmitter, throttle position sensor, crankshaft rotational speed sensor, air inlet pressure sensor, lambda sensor and fuel gas temperature pressure transducer be connected, and be connected with CNG combustion gas throw over switch, the output terminal of combustion gas ECU control unit is connected with gas nozzle with petrol jet respectively.Increasing on gas cylinder bottleneck high-pressure gas pipeline has a unidirectional electrical magnet valve, connects its opening and closing of control by combustion gas ECU control unit.Each sensor provides input signal for combustion gas ECU, makes combustion gas ECU through accurate Calculation, output control gas nozzle and petrol jet; The gasoline auxiliary starting system comprises gasoline fuel tank, gasoline filter, petrol jet; The combustion gas throw over switch provides the switching signal input for combustion gas ECU, makes the break-make of combustion gas ECU output signal control gas cylinder solenoid valve and FP Fuel Pump Relay, guarantees the smooth switching of combustion gas or gasoline.
The utility model integrates advanced technologies such as improving performance, emission control, fault diagnosis, and increases electromagnetic valve on the high-pressure gas pipeline, makes the CNG air supply system safer.Guaranteed that combustion gas ECU satisfies power character, Economy and emission performance requirement under various operating modes.
Description of drawings
Fig. 1 overall formation block diagram of the present utility model;
Fig. 2 is the schematic representation of rock gas emission control.
Embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises four parts:
1) fuel gas supply device: comprise gas cylinder 12, gas cylinder solenoid valve 11, second depressurized valve 13, combustion gas filter cleaner 14, gas nozzle 15 that rock gas is housed, gas cylinder 12 air outlets connect gas cylinder solenoid valve 11, second depressurized valve 13, combustion gas filter cleaner 14, gas nozzle 15. successively by tracheae
2) gasoline auxiliary actuating apparatus: comprise gasoline fuel tank 17, gasoline filter 18, petrol jet 19; 17 outlets of gasoline fuel tank connect gasoline filter 18, petrol jet 19 successively by oil pipe.
3) electronic control system device: comprise combustion gas ECU 2, former gasoline ECU 1, cooling-water temperature transmitter 3, throttle position sensor 4, crankshaft rotational speed sensor 5, air inlet pressure sensor 6, lambda sensor 7, fuel gas temperature pressure transducer 8; The different input ends of combustion gas ECU 2 are connected with the sensor 3～8 on being installed in motor with former car gasoline ECU respectively, and different output terminals is connected with petrol jet 19 with gas nozzle 15 respectively.
4) combustion gas conversion equipment: comprise CNG throw over switch 9, gas cylinder solenoid valve 11 and FP Fuel Pump Relay 16, CNG throw over switch 9 provides the switching signal input for combustion gas ECU 2, make the break-make of combustion gas ECU output signal controlling and driving gas cylinder solenoid valve 11 and FP Fuel Pump Relay 16, guarantee that combustion gas or gasoline switch smoothly.
On bottle mouth of gas cylinder valve high-pressure gas pipeline, increase by a unidirectional electrical magnet valve---be gas cylinder solenoid valve 11, control by combustion gas ECU.When being fuel work with the rock gas, make solenoid valve be in opening state, gas cylinder inner high voltage gas flows out through solenoid valve.When gas burning system was not worked, solenoid valve was in closed condition, prevented to cause gas flow mistake and potential safety hazard in the gas cylinder because fuel gas pipeline is revealed.
The utility model adopts electric-controlled gas multipoint sequential injection technology, and rock gas after gas cylinder solenoid valve 11,13 decompressions of second depressurized valve, enters gas nozzle 15 by 14 filtrations of combustion gas filter cleaner by the pressurized gas in the gas cylinder.Signals such as the throttle position sensor 4 of combustion gas ECU by gathering, crankshaft rotational speed sensor 5, air inlet pressure sensor 6 are declared the identification of cylinder signal, the calculating of rotating speed, and calculate the current"on"time of each cylinder time of ignition and each cylinder spark coil by the operating conditions of motor; ECU 2 is based on former car gasoline ECU 1 fuel injection signal in combustion gas simultaneously, behind parameter corrections such as engine water temperature 3, oxygen sensor signal 7, fuel gas temperature pressure 8, determine the accurate jet pulsewidth in this moment, and it is jet to corresponding cylinder to drive gas nozzle 15, guarantees that combustion gas ECU satisfies power character, Economy and emission performance requirement under various operating modes.
High performance characteristics of the present utility model: signals such as the throttle position sensor of combustion gas ECU by gathering, crankshaft rotational speed sensor, air inlet pressure sensor are declared the identification of cylinder signal, the calculating of rotating speed, and calculate the current"on"time of each cylinder time of ignition and each cylinder spark coil by the operating conditions of motor; ECU is based on former car fuel injection signal in combustion gas simultaneously, behind parameter corrections such as engine water temperature, oxygen sensor signal, gaseous-pressure and fuel gas temperature, determine the jet pulsewidth in this moment, and it is jet to corresponding cylinder to drive gas nozzle, reach the chemically correct fuel 16.8 of expectation, guarantee that combustion gas ECU satisfies power character, Economy and emission performance requirement under various operating modes.
Emission control: adopt the stable state closed loop control.When the air fuel ratio of mixed gas is controlled near the chemically correct fuel, triple mode catalytic converter just can make the oxidation of the reduction of hydrocarbon, carbon monoxide, hydrogen and oxynitrides, oxygen carry out simultaneously, and the three kinds of harmful gases (HC, CO, NOx) in the exhaust are converted to harmless compositions such as carbon dioxide and water.In order to reach discharging evolution purpose and to satisfy emission regulation demands, by means of the voltage signal that is installed in the lambda sensor feedback on the outlet pipe, jet pulsewidth is optimized control, air fuel ratio accurately is controlled at theoretical value (λ=1) state, utilizes triple mode catalytic converter that three kinds of harmful matters in the exhaust are converted to harmless composition again.
Claims (2)
1. electric-controlled gas multipoint sequential injection air supply system, it is characterized in that: it comprises gas cylinder, gas cylinder solenoid valve, second depressurized valve, combustion gas filter cleaner, the gas nozzle that rock gas is housed, and the air outlet of gas cylinder is by tracheae be linked in sequence successively gas cylinder solenoid valve, second depressurized valve, combustion gas filter cleaner and gas nozzle; Electronic control system comprises former car gasoline ECU control unit and the combustion gas ECU control unit that is attached thereto, the different input ends of combustion gas ECU control unit respectively be installed in the CNG motor car engine on cooling-water temperature transmitter, throttle position sensor, crankshaft rotational speed sensor, air inlet pressure sensor, lambda sensor and fuel gas temperature pressure transducer be connected, and be connected with CNG combustion gas throw over switch, the output terminal of combustion gas ECU control unit is connected with gas nozzle with petrol jet respectively.
2. electric-controlled gas multipoint sequential injection air supply system according to claim 1 is characterized in that: increasing on gas cylinder bottleneck high-pressure gas pipeline has a unidirectional electrical magnet valve, connects its opening and closing of control by combustion gas ECU control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201310524U CN202031727U (en) | 2011-04-29 | 2011-04-29 | Electric control multipoint sequential gas injection and supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201310524U CN202031727U (en) | 2011-04-29 | 2011-04-29 | Electric control multipoint sequential gas injection and supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031727U true CN202031727U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201310524U Expired - Lifetime CN202031727U (en) | 2011-04-29 | 2011-04-29 | Electric control multipoint sequential gas injection and supply system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202031727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536476A (en) * | 2012-01-17 | 2012-07-04 | 成都欧韦尔技术设备有限公司 | Integration-type gas controller of dual-purpose fuel tanker and gas jetting time correcting method |
| CN103835827A (en) * | 2014-03-03 | 2014-06-04 | 潍柴西港新能源动力有限公司 | Ultralow-temperature fuel gas temperature protection method for LNG (liquefied natural gas) engine |
| CN104879226A (en) * | 2015-05-19 | 2015-09-02 | 贵州大学 | Fuel control system for double-fuel engine of automobile |
-
2011
- 2011-04-29 CN CN2011201310524U patent/CN202031727U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536476A (en) * | 2012-01-17 | 2012-07-04 | 成都欧韦尔技术设备有限公司 | Integration-type gas controller of dual-purpose fuel tanker and gas jetting time correcting method |
| CN103835827A (en) * | 2014-03-03 | 2014-06-04 | 潍柴西港新能源动力有限公司 | Ultralow-temperature fuel gas temperature protection method for LNG (liquefied natural gas) engine |
| CN104879226A (en) * | 2015-05-19 | 2015-09-02 | 贵州大学 | Fuel control system for double-fuel engine of automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |