CN201103473Y - Gas electric spraying system of two-stroke outboard machine - Google Patents
Gas electric spraying system of two-stroke outboard machine Download PDFInfo
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- CN201103473Y CN201103473Y CNU2007200986425U CN200720098642U CN201103473Y CN 201103473 Y CN201103473 Y CN 201103473Y CN U2007200986425 U CNU2007200986425 U CN U2007200986425U CN 200720098642 U CN200720098642 U CN 200720098642U CN 201103473 Y CN201103473 Y CN 201103473Y
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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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- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a gas electronic fuel injection system of a two-stroke outboard engine, which comprises a gas cylinder, an on-off valve, an LPG/CNG gas preheating pressure regulator, a gas common-rail nozzle, an electronic control unit, an air throttle angle sensor, a water temperature sensor, a synchronizing datum signal sensor, a high energy ignition system, an oxygen sensor and a three-way catalyst; the on-off valve and the LPG/CNG gas preheating pressure regulator are arranged on an outlet of the gas cylinder; the air throttle angle sensor is arranged on an inlet of a motor; the oxygen sensor and the three-way catalyst are arranged on the air throttle body of the motor; the high energy ignition system is arranged on the top of the motor; the synchronizing datum signal sensor is arranged on the corresponding position of a crankshaft on the gas cylinder; the electronic control unit receives working condition signals from each sensor and outputs control signals after being processed to control the operation of the two-stroke outboard engine. The system can promote the output power of the two-stroke outboard engine, lower the energy consumption and reduce the pollution of tail gas of the motor to environment to the lowest.
Description
Technical field
The utility model relates to the technical field of two-stroke gas electrojet motor, be a kind of two-stroke gas outboard machine that is used to control specifically, guaranteeing motor, thereby make two-stroke gas outboard machine output power height, reduce fuel consumption, motor exhaust is reduced to minimum gas electrojet system of two-stroke outboard engine to the pollution of environment at accurate ignition advance angle of each operating mode and fuel injection quantity.
Background technique
Motor provides the device of power, and its effect is to make to infeed fuel combustion wherein and send power.Motor is divided into petrol engine, diesel engine and gas engine by the fuel that uses.It is according to realizing that the circuit number of strokes may generally is divided into four stroke engine and two stroke engine two big classes.
The two stroke engine bent axle whenever revolves and turns around, and an expansion stroke is just arranged.Therefore, under the identical condition of factors such as rotating speed, inlet air conditions, the power that two stroke engine can produce should equal 1.5 to 1.7 times of power that the same swept volume four stroke engine produced.
Be widely used in the two-stroke outboard petrol engine of small-size water surface ships and light boats, account for whole minitype ships 90% of motor.
But minitype ship must enter the cooling of eliminating the noise in the water with the gas of combustion of outboard petrol engine, two-stroke gasoline engine is because the short-circuit loss of its scavenging process, can make a large amount of not gasoline engine oil mixtures of combustion, fuel oil additives etc. enter in the water, cause pollution to water quality, simultaneously because two-stroke outboard petrol engine adopts traditional Carburetor fuel system, and the phase place of effectively working is less than four-stroke gasoline engine, motor is formed at mixed gas, aspects such as burning existing problems, be easy to generate a large amount of HC, CO, NOX and sulphide enter in the water, and further pollution has been caused in waters and surrounding enviroment thereof.
For the water surface ship of tourist district, if adopt the two-cycle gasoline outboard machine, the effluent of tail gas directly contacts with water, and the effluent in the water surface and the water is difficult to cleaning more.Therefore, adopt the combustion gas outboard machine of the fuel that cleans more just to be fit to be used in the ship in the tourism zone more, the combustion gas outboard machine is a fuel with liquefied petroleum gas (LPG) or compressed natural gas, can reduce to the pollution of tail gas minimum.Simultaneously, adopt electric injection system accurately to control the time of ignition of each operating mode and the pollution that jet amount further reduces tail gas, improve engine power performance, reduce fuel consumption.Existing combustion gas outboard machine mostly is four-stroke combustion gas outboard machine, but the complex structure of four-stroke combustion gas outboard machine, rate of fault height, maintenance difficult and output power are lower, and equipment replacement and user cost are too high, and cost performance is relatively poor.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of gas electrojet system of two-stroke outboard engine of motor at each operating mode ignition advance angle and fuel injection quantity that be used for accurately controlling.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
Gas electrojet system of two-stroke outboard engine of the present utility model comprises: gas cylinder, switch electromagnetic valve, LPG/CNG gas-preheating pressure governor, combustion gas be rail nozzle, ECU (Electrical Control Unit), throttle angle sensor, cooling-water temperature sensor, synchronizing datum signal sensor, high-energy ignition system, lambda sensor and ternary catalyzing unit altogether; The gas cylinder outlet port is provided with switch electromagnetic valve and LPG/CNG gas-preheating pressure governor, gaseous fuel after pressure regulation is total to the rail nozzle by combustion gas and is injected in the engine inlets, the engine air throttle body is provided with throttle angle sensor, the air outlet flue of motor is provided with lambda sensor and ternary catalyzing unit, the motor top is provided with the high-energy ignition system that comprises spark plug, the relevant position of bent axle is provided with the synchronizing datum signal sensor on cylinder, ECU (Electrical Control Unit) receives the working condition signal from each sensor, exports the work that control signal control combustion gas is total to rail nozzle and spark plug after treatment.
The utility model can also adopt following technical measures:
Described cooling-water temperature sensor is installed on the LPG/CNG gas-preheating pressure governor, and this position is in engine cooling water cycle place.
Described LPG/CNG gas-preheating pressure governor can be with the pressure stability of gaseous fuel at medium pressure 3～5bar, thereby compensates the minimizing that air inlet phase shortens the combustion gas intake that causes by the raising of jet pressure.
Described gas electrojet system of two-stroke outboard engine carries out the closed loop correction according to fuel gas injection pressure.
The direction that described combustion gas is total to rail nozzle ejection fuel is consistent along the scavenging flow path direction with scavenging air belt.
Turn ratio by strengthening spark coil in the described high-energy ignition system is to improve ignition energy.
In the described ECU (Electrical Control Unit), the synchronizing datum signal by the trigger winding of motor magnetogenerator is imported is processed into square signal by photoelectric isolating circuit and Schmidt's eliminator and enters single-chip microcomputer; By the throttle valve angle signal of throttle angle sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; By the water temperature signal of cooling-water temperature sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; By the oxygen concentration signal of lambda sensor input, enter single-chip microcomputer by signal amplification and voltage conversion circuit processing; The digital quantity output port output fuel injection pulsewidth signal of single-chip microcomputer, the fuel injection control circuit that output procedure is made up of signal amplification and voltage conversion circuit, power drive unit is finished; The digital quantity port of single-chip microcomputer is exported variable ignition advance angle signal, and output procedure is to finish by composition ignition control circuits such as signal amplification circuit, photoelectric isolating circuit, power drive unit, release circuit; The digital quantity output terminal of single-chip microcomputer output magnetic switch valve drive signal, output procedure is finished by signal amplification and voltage conversion circuit and power driving circuit.
The mounting bracket of described throttle angle sensor comprises that butterfly valve prolongs axle and support two-part, butterfly valve prolongs axle and is attached at an end that does not have linking mechanism on the butterfly valve mandrel by a locating stud, the fixing bolt that utilizes former carburetor throttle axle to prolong axle one end is fixed together support and former Carburetor body, throttle angle sensor is fixed on the support, when throttle butterfly rotated, prolonging axle can rotate by the interior axle of drive sensor together.
Advantage and the good effect that the utlity model has are:
In the gas electrojet system of two-stroke outboard engine of the present utility model, carry the work information of outboard machine to ECU (Electrical Control Unit) by each sensor, ECU (Electrical Control Unit) is directly controlled the working state of outboard machine according to these work informations, guaranteed the power output of outboard machine, adjust the injection pulse width and the time of ignition of gaseous fuel, guarantee to reduce to minimum to the pollution of environment motor exhaust.
Description of drawings
Fig. 1 is the structural representation of two-stroke gas electrojet outboard engine of the present utility model;
Fig. 2 is the ECU (Electrical Control Unit) control principle block diagram of two-stroke gas electrojet outboard engine of the present utility model;
Fig. 3 is the structural representation that the butterfly valve of the mounting bracket of throttle angle sensor in the utility model prolongs axle and support;
Critical piece symbol description in the accompanying drawing:
1: cylinder 2: gas cylinder
3: switch electromagnetic valve 4:LPG/CNG gas-preheating pressure governor
5: cooling-water temperature sensor 6: combustion gas is the rail nozzle altogether
7: spark plug and high-energy ignition system 8: synchronizing datum signal sensor
9: throttle angle sensor 10: lambda sensor
11: ternary catalyzing unit 12: ECU (Electrical Control Unit)
13: gaseous-pressure sensor 14: butterfly valve prolongs axle
15: support 16: locating stud
17: butterfly valve mandrel 18: fixing bolt
Embodiment
Followingly the utility model is described in detail with reference to drawings and Examples.
Fig. 1 is the structural representation of two-stroke gas electrojet outboard engine of the present utility model; Fig. 2 is the ECU (Electrical Control Unit) control principle block diagram of two-stroke gas electrojet outboard engine of the present utility model; Fig. 3 is the structural representation that the butterfly valve of the mounting bracket of throttle angle sensor in the utility model prolongs axle and support.
As shown in Figure 1, two-stroke gas electrojet outboard engine, comprise: cylinder 1, spark plug and high-energy ignition system 7, gas cylinder 2, ECU (Electrical Control Unit) 12, throttle angle sensor 9, cooling-water temperature sensor 5, synchronizing datum signal sensor 8, lambda sensor 10, ternary catalyzing unit 11, combustion gas is rail nozzle 6 altogether, gaseous-pressure sensor 13, gas cylinder 2 is connected with cylinder 1, on the path of gas cylinder 2 and cylinder 1 LPG/CNG gas-preheating pressure governor 4 and switch electromagnetic valve 3 are set, cooling-water temperature sensor 5 is arranged on the LPG/CNG gas-preheating pressure governor 4, LPG/CNG gas-preheating pressure governor can be with the pressure stability of gaseous fuel at 3～5bar, gaseous fuel is total to rail nozzle 6 by combustion gas and is injected in the engine inlets, the throttle body of cylinder is provided with throttle angle sensor 9, the air outlet flue of cylinder is provided with lambda sensor 10 and ternary catalyzing unit 11, the top of cylinder is provided with the high-energy ignition system that comprises spark plug 7, the relevant position of bent axle is provided with crankshaft position sensor 8 on cylinder, the working condition signal that ECU (Electrical Control Unit) 12 receives from each sensor has ECU (Electrical Control Unit) control combustion gas to be total to the work of rail nozzle 6 and spark plug 7 after treatment.The direction that combustion gas is total to rail nozzle 6 burner oils is consistent along the scavenging flow path direction with scavenging air belt.This system carries out the closed loop Correction and Control based on gaseous-pressure sensor 13.
As shown in Figure 2, in the ECU (Electrical Control Unit),, be processed into square signal by photoelectric isolating circuit and Schmidt's eliminator and enter single-chip microcomputer from the synchronizing datum signal of motor magnetogenerator trigger winding; Throttle angle sensor is installed on the closure, its function is that the aperture signal transition with engine air throttle becomes electrical signal, and pass to ECU (Electrical Control Unit), payload and acceleration and deceleration operating mode in order to the perception motor, the throttle valve angle signal of throttle angle sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; By the water temperature signal of cooling-water temperature sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; Lambda sensor is used for detecting the oxygen content of vehicle exhaust, according to the oxygen concentration determination air fuel ratio in the exhaust, send feedback signal to ECU (Electrical Control Unit), converge on theoretical value, handle entering single-chip microcomputer from the oxygen concentration signal of lambda sensor by signal amplification and voltage conversion circuit with the control air fuel ratio; The fuel injection pulsewidth signal of output is from the digital quantity output port of single-chip microcomputer, and the fuel injection control circuit that output procedure is made up of signal amplification and voltage conversion circuit, power drive unit is finished; The variable ignition advance angle signal of output is from the digital quantity port of single-chip microcomputer, and the ignition control circuit that output procedure is made up of signal amplification circuit, photoelectric isolating circuit, power drive unit, release circuit etc. is finished; The magnetic switch valve drive signal of output is from the digital output end of single-chip microcomputer, and output is finished by signal amplification and voltage conversion circuit and power driving circuit; Communication signal is by the output of CAN bus transmission circuit.Can pass through to strengthen the turn ratio of spark coil in the high-energy ignition system to improve ignition energy.
As shown in Figure 3, the mounting bracket of throttle angle sensor comprises that butterfly valve prolongs axle 14 and support 15 two-part, butterfly valve prolongs axle and is attached at an end that does not have linking mechanism on the butterfly valve mandrel 17 by a locating stud 16, the fixing bolt 18 that utilizes former carburetor throttle axle to prolong axle one end is fixed together support and former Carburetor body, throttle angle sensor 10 is fixed on the support 15, when throttle butterfly rotated, prolonging axle can rotate by the interior axle of drive sensor together.
Claims (8)
1, a kind of gas electrojet system of two-stroke outboard engine is characterized in that: comprising: gas cylinder, switch electromagnetic valve, LPG/CNG gas-preheating pressure governor, combustion gas be rail nozzle, ECU (Electrical Control Unit), throttle angle sensor, cooling-water temperature sensor, synchronizing datum signal sensor, high-energy ignition system, lambda sensor and ternary catalyzing unit altogether; The gas cylinder outlet port is provided with switch electromagnetic valve and LPG/CNG gas-preheating pressure governor, gaseous fuel after pressure regulation is total to the rail nozzle by combustion gas and is injected in the engine inlets, engine inlets are provided with throttle angle sensor, the throttle body of motor is provided with lambda sensor and ternary catalyzing unit, the motor top is provided with the high-energy ignition system that comprises spark plug, the relevant position of bent axle is provided with the synchronizing datum signal sensor on cylinder, ECU (Electrical Control Unit) receives the working condition signal from each sensor, exports the work that control signal control combustion gas is total to rail nozzle and spark plug after treatment.
2, gas electrojet system of two-stroke outboard engine according to claim 1 is characterized in that: cooling-water temperature sensor is installed on the LPG/CNG gas-preheating pressure governor, and this position is in engine cooling water cycle place.
3, gas electrojet system of two-stroke outboard engine according to claim 1, it is characterized in that: LPG/CNG gas-preheating pressure governor can be with the pressure stability of gaseous fuel at medium pressure 3～5bar, thereby compensates the minimizing that air inlet phase shortens the combustion gas intake that causes by the raising of jet pressure.
4, gas electrojet system of two-stroke outboard engine according to claim 1 is characterized in that: gas electrojet system of two-stroke outboard engine carries out the closed loop correction according to fuel gas injection pressure.
5, gas electrojet system of two-stroke outboard engine according to claim 1 is characterized in that: the direction that combustion gas is total to rail nozzle ejection fuel is consistent along the scavenging flow path direction with scavenging air belt.
6, gas electrojet system of two-stroke outboard engine according to claim 1 is characterized in that: all mistakes of high-energy ignition system strengthen the turn ratio of spark coil to improve ignition energy.
7, gas electrojet system of two-stroke outboard engine according to claim 1, it is characterized in that: in the ECU (Electrical Control Unit), synchronizing datum signal by the trigger winding of motor magnetogenerator is imported is processed into square signal by photoelectric isolating circuit and Schmidt's eliminator and enters single-chip microcomputer; By the throttle valve angle signal of throttle angle sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; By the water temperature signal of cooling-water temperature sensor input, the processing by low-pass filter circuit enters single-chip microcomputer; By the oxygen concentration signal of lambda sensor input, enter single-chip microcomputer by signal amplification and voltage conversion circuit processing; The digital quantity output port output fuel injection pulsewidth signal of single-chip microcomputer, the fuel injection control circuit that output procedure is made up of signal amplification and voltage conversion circuit, power drive unit is finished; The digital quantity port of single-chip microcomputer is exported variable ignition advance angle signal, and output procedure is to finish by composition ignition control circuits such as signal amplification circuit, photoelectric isolating circuit, power drive unit, release circuit; The digital quantity output terminal of single-chip microcomputer output magnetic switch valve drive signal, output procedure is finished by signal amplification and voltage conversion circuit and power driving circuit.
8, gas electrojet system of two-stroke outboard engine according to claim 1, it is characterized in that: the mounting bracket of throttle angle sensor comprises that butterfly valve prolongs axle and support two-part, butterfly valve prolongs axle and is attached at an end that does not have linking mechanism on the butterfly valve mandrel by a locating stud, the fixing bolt that utilizes former carburetor throttle axle to prolong axle one end is fixed together support and former Carburetor body, throttle angle sensor is fixed on the support, when throttle butterfly rotated, prolonging axle can rotate by the interior axle of drive sensor together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200986425U CN201103473Y (en) | 2007-09-25 | 2007-09-25 | Gas electric spraying system of two-stroke outboard machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200986425U CN201103473Y (en) | 2007-09-25 | 2007-09-25 | Gas electric spraying system of two-stroke outboard machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103473Y true CN201103473Y (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200986425U Expired - Fee Related CN201103473Y (en) | 2007-09-25 | 2007-09-25 | Gas electric spraying system of two-stroke outboard machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103473Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749136A (en) * | 2008-12-19 | 2010-06-23 | 天津内燃机研究所 | Direct injection engine in electric control gas cylinder |
| CN102121427A (en) * | 2011-03-24 | 2011-07-13 | 温州市气动元件厂 | Ignition injection control device for gas engine |
| CN102235284A (en) * | 2011-06-30 | 2011-11-09 | 南京航空航天大学 | Scavenging air duct spraying device of double-stroke kerosene engine |
-
2007
- 2007-09-25 CN CNU2007200986425U patent/CN201103473Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749136A (en) * | 2008-12-19 | 2010-06-23 | 天津内燃机研究所 | Direct injection engine in electric control gas cylinder |
| CN102121427A (en) * | 2011-03-24 | 2011-07-13 | 温州市气动元件厂 | Ignition injection control device for gas engine |
| CN102235284A (en) * | 2011-06-30 | 2011-11-09 | 南京航空航天大学 | Scavenging air duct spraying device of double-stroke kerosene engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20110925 |