CN1796752B - Electric control engine of motorcycle of using monofuel LPG - Google Patents
Electric control engine of motorcycle of using monofuel LPG Download PDFInfo
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- CN1796752B CN1796752B CN 200410093972 CN200410093972A CN1796752B CN 1796752 B CN1796752 B CN 1796752B CN 200410093972 CN200410093972 CN 200410093972 CN 200410093972 A CN200410093972 A CN 200410093972A CN 1796752 B CN1796752 B CN 1796752B
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Abstract
A motor bicycle electric controlled engine using single fuel of LPG consists of electric controlled closed loop jetting system formed by ECU, air throttle component, stroke position transducer, temperature transducer of air inlet, atmospheric pressure transducer, synchronous reference signal transducer and oxygen transducer set on exhaust pipe; high-efficient ignition system; combustion chamber ofhigh compression ratio; ternary catalytic converter; LPG regulation valve of temperature controlled preheating type; solenoid valve and LPG cylinder.
Description
Affiliated field:
The invention belongs to motor car engine electronic control technology field, particularly a kind of electric control engine of motorcycle of using monofuel LPG.
Background technique:
At present, domestic motorcycle engine is based on four-stroke gasoline engine, along with the increasingly stringent of national Abgasgesetz, utilizes LPG etc. to substitute fuel and the engine electric spray technology becomes the effective technology means that solve motorcycle emission.But use LPG and have following point: 1, because the LPG combustion gas occupies certain volume in the air inlet charge, the motor volumetric efficiency is reduced, cause the engine power loss; 2, LPG combustion gas kindling temperature height makes the engine cold starting difficulty; 3, the LPG velocity of propagation of flame petrol engine that compares is low, and the mixture combustion duration prolongs, and makes the after-burning of LPG gas engine serious, causes delivery temperature higher.Therefore, simple application LPG can not guarantee the power output of motor and the purpose of emission control as substitute fuel on traditional motorcycle gasoline engine.
Summary of the invention:
Purpose of the present invention just is to provide a kind of electric control engine of motorcycle of using monofuel LPG, and this motor can be guaranteed required power output, and can control CO, HC, NO in the motor exhaust effectively
XEtc. harmful components.
Technological scheme of the present invention is: a kind of electric control engine of motorcycle of using monofuel LPG, comprise by ECU (Electrical Control Unit) ECU, the throttle body assembly, the travel position sensor, intake air temperature sensor, cylinder temperature sensor, barometric pressure sensor, synchronizing datum signal sensor and the automatically controlled closed loop ejecting system that is installed in lambda sensor composition on the outlet pipe, the high-energy ignition system, the high compression ratio firing chamber, three-way catalytic converter is characterized in that: utilize this automatically controlled closed loop ejecting system, the high-energy ignition system, the pre-heated LPG pressure regulator valve of high compression ratio firing chamber and temperature control, electromagnetic switch valve, LPG steel cylinder and three-way catalytic converter are realized the performance and the emission request of motor jointly; Wherein, the LPG steel cylinder is connected by the liquid LPG inlet of the pre-heated LPG pressure regulator valve of electromagnetic switch valve and temperature control, the gaseous state LPG outlet of the pre-heated LPG pressure regulator valve of temperature control is connected with snifting valve, and the heat transferring medium inlet/outlet of the pre-heated LPG pressure regulator valve of temperature control is connected with the crankcase body of motor; Throttle angle sensor, travel position sensor, intake air temperature sensor, cylinder temperature sensor, barometric pressure sensor and synchronizing datum signal signal of sensor are input on the interior single-chip microcomputer of ECU (Electrical Control Unit) ECU, and the output terminal of ECU (Electrical Control Unit) ECU is connected with electromagnetic switch valve, electronic controlled gas injection valve and high-energy ignition system; The pre-heated LPG pressure regulator valve of temperature control valve inner cavity is for becoming " π " type channel design, and the PTC heating unit is set near passage, and ECU (Electrical Control Unit) ECU is according to the center housing temperature signal enabling of input or close the PTC heating unit.
Above-mentioned synchronizing datum signal is the output signal of the trigger winding of motor magnetogenerator, and this synchronizing datum signal is processed into square signal by photoelectric isolating circuit one and Schmidt's eliminator and enters single-chip microcomputer; Be input to single-chip microcomputer after the processing of the output signal of the throttle angle sensor of throttle body assembly by low-pass filter circuit one; Engine stroke is judged signal from the travel position sensor, enters single-chip microcomputer after handling by low-pass filter circuit two; The processing circuit that the signal of air inlet and cylinder temperature sensor output is formed by low-pass filter circuit three is input to single-chip microcomputer; The atmospheric pressure signal of barometric pressure sensor output is managed everywhere as the corrected parameter signal by low-pass filter circuit and is entered single-chip microcomputer; The oxygen concentration signal of lambda sensor output amplifies by signal and voltage conversion circuit one processing enters single-chip microcomputer; The battery tension signal is an analog signals, after being handled by low-pass filter circuit five, enters single-chip microcomputer as the corrected parameter signal; The digital quantity output port of single-chip microcomputer is connected with by signal amplification circuit one, photoelectric isolating circuit two, power drive unit, release circuit and two and overlaps the ignition control circuit that energy storage discharge igniting module is independently formed; This ignition control circuit is exported variable ignition advance angle signal; The digital quantity output port output of single-chip microcomputer is by the electronic controlled gas injection valve drive signal of signal amplification and voltage conversion circuit two and power driving circuit processing output; One-chip machine port connects signal amplification circuit two and RS-232 electrical level conversion circuit, is used for the outputting communication signal; The digital quantity output port of single-chip microcomputer is connected with signal amplification circuit three and light emitting diode, and they export fault display signal.
Above-mentioned throttle body assembly contains electronic controlled gas injection valve and throttle angle sensor.
Advantage of the present invention is: the present invention forms the flammable homogeneous charge of LPG of suitable air fuel ratio at engine air flue.Detect the engine operation stroke by the travel position sensor, determine that the best of electronic controlled gas injection valve opens spray constantly; The gaseous state LPG of pressure stability is provided to provide under any ambient temperature by the pre-heated LPG pressure regulator valve of temperature control.The present invention can calculate output best LPG injection pulse width and ignition advance angle according to the rotating speed and the closure opening angle of motor, and revise according to parameters such as environment and engine temperature, atmospheric pressure, battery tensions, to satisfy required LPG homogeneous charge of motor normal combustion and best time of ignition; Utilize the high-energy ignition system to promote the generation of LPG combustion gas fire nuclear, guarantee that engine cold starting lights a fire successfully, make the LPG engine combustion abundant; Utilize the high compression ratio firing chamber to strengthen the combustion process of LPG motor, compensation influences the power loss that the engine charge charge causes because of gaseous fuel; Detect the concentration signal of oxygen in the tail gas as the closed loop feedback signal by the lambda sensor that is installed on the outlet pipe, judge air fuel ratio dense rare of the flammable homogeneous charge of LPG, the injection pulse width of adjusting LPG makes air fuel ratio in 1 ± 0.03 scope, harmful components CO, HC, NO after guaranteeing to burn in the tail gas
XChange into CO Deng redox catalysis reaction by three-way catalyst
2, H
2O, N
2Deng, can reduce of the pollution of harmful tail gas of motor significantly to environment.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is the electrical schematic diagram of ECU (Electrical Control Unit) ECU of the present invention
Fig. 3 is the structural representation of the pre-heated LPG pressure regulator valve of temperature control
Embodiment:
As shown in Figure 1: 1 is the LPG steel cylinder, 2 is electromagnetic switch valve, 3 is the LPG pressure regulator valve, 4 is the throttle body assembly, 5 is spark coil, 6 is spark plug, 7 is snifting valve, 8 is throttle angle sensor, 9 is empty filter, 10 is intake air temperature sensor, 11 is cylinder temperature sensor, 12 is lambda sensor, 13 is the synchronizing datum signal sensor, 14 is communication interface, 15 is the malfunction alarm tutorial light, 16 is ECU (Electrical Control Unit) ECU, 17 is barometric pressure sensor, 18 is the travel position sensor, 19 is ternary catalyzing unit, 20 is storage battery, 21 is key operation.
As shown in Figure 1: a kind of electric control engine of motorcycle of using monofuel LPG, utilization is by ECU (Electrical Control Unit) ECU16, throttle body assembly 4 (containing electronic controlled gas injection valve and throttle angle sensor), travel position sensor 18, intake air temperature sensor 10, cylinder temperature sensor 11, barometric pressure sensor 17, synchronizing datum signal sensor 13 (former motor magnetogenerator trigger winding) and the lambda sensor 12 that is installed on the outlet pipe are formed automatically controlled closed loop ejecting system, and with the high-energy ignition system, the high compression ratio firing chamber, the pre-heated LPG pressure regulator valve 3 of temperature control, electromagnetic switch valve 2, LPG steel cylinder 1 and triple mode catalytic converter 19 mutual group cost motors.Wherein, throttle angle sensor, travel position sensor, intake air temperature sensor, cylinder temperature sensor, barometric pressure sensor and synchronizing datum signal signal of sensor are input on the interior single-chip microcomputer of ECU (Electrical Control Unit) ECU, the output terminal of ECU (Electrical Control Unit) ECU is connected with electromagnetic switch valve 2, electronic controlled gas injection valve 7 and high-energy ignition system, and the high-energy ignition system is made up of spark coil 5 and spark plug 6; Described electromagnetic switch valve 2 is connected with key operation 21.
As shown in Figure 3: the pre-heated LPG pressure regulator valve of temperature control valve inner cavity is for becoming " π " type channel design 25, and PTC heating unit 26 is set near passage, and ECU (Electrical Control Unit) ECU is according to the center housing temperature signal enabling of input or close the PTC heating unit.Valve body is provided with heat transferring medium inlet/outlet 27,28, liquid LPG inlet 29 and gaseous state LPG outlet 30, pressure gauge connection 31 and heat transferring medium flow and regulates mouth 32.Heat transferring medium inlet/outlet 27,28 on the valve body is connected with the engine crankshaft casing, and liquid LPG inlet 29 is connected with the LPG steel cylinder by above-mentioned electromagnetic switch valve 2, and gaseous state LPG exports 30 and is connected with electronic controlled gas injection valve 7; This pressure regulator valve connects ECU (Electrical Control Unit) ECU by wire harness 33.This pressure regulator valve utilizes the cooling water of motorcycle engine or machine oil as heat transferring medium, enters, exports 28 by import 27 and flow out, and provides liquid LPG vaporization the required latent heat of vaporization." π " type structure of pressure regulator valve internal cavity, the area of contact when increasing liquid LPG heat exchange.When the center housing temperature that detects motor according to cylinder temperature sensor was lower than 5 ℃, ECU connected the power supply of PTC heating unit automatically, makes its temperature rise to 60 ℃ rapidly, is provided under the low temperature environment latent heat of vaporization that liquid LPG is required.After 10 minutes, close the power supply of PTC heating unit automatically.If heat exchange medium temperature too high (being higher than 80 ℃) also can be adjusted rate-of flow by the flow area of heat transferring medium flow adjustment mouth adjustment heat exchanger channels, the adjustment mode is mechanical type or electromagnetic valve, thereby adjusts the heat-shift of medium.
As shown in Figure 2: described ECU (Electrical Control Unit) ECU, its input signal synchronizing datum signal are processed into square signal by photoelectric isolating circuit and Schmidt's eliminator and enter single-chip microcomputer from the trigger winding of motor magnetogenerator; Its input signal throttle valve angle signal is from the throttle angle sensor of throttle body assembly, by the processing of low-pass filter circuit; Its input signal engine stroke is judged signal from the travel position sensor, enters single-chip microcomputer after handling by low-pass filter circuit; Its input signal temperature signal is from air inlet and cylinder temperature sensor, by the processing circuit of being made up of low-pass filter circuit; Its input signal atmospheric pressure signal is handled as the corrected parameter signal by low-pass filter circuit from barometric pressure sensor; Its input signal storage battery 20 voltage signals are analog signals, after being handled by low-pass filter circuit, enter single-chip microcomputer as the corrected parameter signal; Its input signal oxygen concentration signal enters single-chip microcomputer from lambda sensor by signal amplification and voltage conversion circuit processing; Its output signal LPG injection pulse width signal sprays control circuit from the digital quantity output port of single-chip microcomputer by the LPG that signal amplifies and voltage conversion circuit output, power drive unit are formed; The variable ignition advance angle signal of its output signal is from the digital quantity port of single-chip microcomputer, overlaps independently energy storage discharge igniting module etc. by signal amplification circuit, photoelectric isolating circuit, power drive unit, release circuit, two and forms ignition control circuit; Its output signal fault display signal by signal amplification circuit and light emitting diode, is judged the fault type of system from the digital output end of single-chip microcomputer frequently by the sudden strain of a muscle of light emitting diode; Its output signal magnetic switch valve drive signal is from the digital output end of single-chip microcomputer, by signal amplification and voltage conversion circuit and power driving circuit processing output; Its output signal communication signal is from the RXTX port of single-chip microcomputer, by photoelectric isolating circuit and the output of RS-232 electrical level conversion circuit.Referring to Fig. 2.
The compression ratio of LPG electronic fuel injection engine is improved by the radius of curvature that changes the motorcycle engine spherical combustion chamber in the high compression ratio firing chamber, strengthens the combustion process of LPG motor, and compensation influences the power loss that the engine charge charge causes because of gaseous fuel.
Claims (4)
1. electric control engine of motorcycle of using monofuel LPG, comprise by ECU (Electrical Control Unit) ECU, the throttle body assembly, the travel position sensor, intake air temperature sensor, cylinder temperature sensor, barometric pressure sensor, synchronizing datum signal sensor and the automatically controlled closed loop ejecting system that is installed in lambda sensor composition on the outlet pipe, the high-energy ignition system, the high compression ratio firing chamber, three-way catalytic converter is characterized in that: utilize this automatically controlled closed loop ejecting system, the high-energy ignition system, the pre-heated LPG pressure regulator valve of high compression ratio firing chamber and temperature control, electromagnetic switch valve, LPG steel cylinder and three-way catalytic converter are realized the performance and the emission request of motor jointly; Wherein, the LPG steel cylinder is connected by the liquid LPG inlet of the pre-heated LPG pressure regulator valve of electromagnetic switch valve and temperature control, the gaseous state LPG outlet of the pre-heated LPG pressure regulator valve of temperature control is connected with snifting valve, and the heat transferring medium inlet/outlet of the pre-heated LPG pressure regulator valve of temperature control is connected with the crankcase body of motor; Throttle angle sensor, travel position sensor, intake air temperature sensor, cylinder temperature sensor, barometric pressure sensor and synchronizing datum signal signal of sensor are input on the interior single-chip microcomputer of ECU (Electrical Control Unit) ECU, and the output terminal of ECU (Electrical Control Unit) ECU is connected with electromagnetic switch valve, electronic controlled gas injection valve and high-energy ignition system.
2. electric control engine of motorcycle of using monofuel LPG according to claim 1, it is characterized in that: the pre-heated LPG pressure regulator valve of above-mentioned temperature control valve inner cavity is for becoming " π " type channel design, and the PTC heating unit is set near passage, and ECU (Electrical Control Unit) ECU is according to the center housing temperature signal enabling of importing or close the PTC heating unit.
3. electric control engine of motorcycle of using monofuel LPG according to claim 1, it is characterized in that: above-mentioned synchronizing datum signal is the output signal of the trigger winding of motor magnetogenerator, and this synchronizing datum signal is processed into square signal by photoelectric isolating circuit one and Schmidt's eliminator and enters single-chip microcomputer; Be input to single-chip microcomputer after the processing of the output signal of the throttle angle sensor of throttle body assembly by low-pass filter circuit one; Engine stroke is judged signal from the travel position sensor, enters single-chip microcomputer after handling by low-pass filter circuit two; The processing circuit that the signal of air inlet and cylinder temperature sensor output is formed by low-pass filter circuit three is input to single-chip microcomputer; The atmospheric pressure signal of barometric pressure sensor output is managed everywhere as the corrected parameter signal by low-pass filter circuit and is entered single-chip microcomputer; The oxygen concentration signal of lambda sensor output amplifies by signal and voltage conversion circuit one processing enters single-chip microcomputer; The battery tension signal is an analog signals, after being handled by low-pass filter circuit five, enters single-chip microcomputer as the corrected parameter signal; The digital quantity output port of single-chip microcomputer is connected with by signal amplification circuit one, photoelectric isolating circuit two, power drive unit, release circuit and two and overlaps the ignition control circuit that energy storage discharge igniting module is independently formed; This ignition control circuit is exported variable ignition advance angle signal; The digital quantity output port output of single-chip microcomputer is by the electronic controlled gas injection valve drive signal of signal amplification and voltage conversion circuit two and power driving circuit processing output; One-chip machine port connects signal amplification circuit two and RS-232 electrical level conversion circuit, is used for the outputting communication signal; The digital quantity output port of single-chip microcomputer is connected with signal amplification circuit three and light emitting diode, and they export fault display signal.
4. electric control engine of motorcycle of using monofuel LPG according to claim 1 is characterized in that: above-mentioned throttle body assembly contains electronic controlled gas injection valve and throttle angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093972 CN1796752B (en) | 2004-12-20 | 2004-12-20 | Electric control engine of motorcycle of using monofuel LPG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093972 CN1796752B (en) | 2004-12-20 | 2004-12-20 | Electric control engine of motorcycle of using monofuel LPG |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796752A CN1796752A (en) | 2006-07-05 |
| CN1796752B true CN1796752B (en) | 2010-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410093972 Expired - Fee Related CN1796752B (en) | 2004-12-20 | 2004-12-20 | Electric control engine of motorcycle of using monofuel LPG |
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| Country | Link |
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| CN (1) | CN1796752B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619684A (en) * | 2008-07-02 | 2010-01-06 | 中国第一汽车集团公司 | Design of electric control system ECU of CNG engine |
| CN111895160A (en) * | 2020-07-15 | 2020-11-06 | 苏州巩诚电器技术有限公司 | Control device and control method for electromagnetic switch valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405022Y (en) * | 2000-01-21 | 2000-11-08 | 浙江大学 | Apparatus for constant supplying motor cycle engine with gaseous fuel using LPG liquid jetting |
| CN1434199A (en) * | 2002-01-22 | 2003-08-06 | 雅马哈发动机株式会社 | Gas fuel supply device for engine |
-
2004
- 2004-12-20 CN CN 200410093972 patent/CN1796752B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405022Y (en) * | 2000-01-21 | 2000-11-08 | 浙江大学 | Apparatus for constant supplying motor cycle engine with gaseous fuel using LPG liquid jetting |
| CN1434199A (en) * | 2002-01-22 | 2003-08-06 | 雅马哈发动机株式会社 | Gas fuel supply device for engine |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2004-332592A 2004.11.25 |
| JP特开2004-346813A 2004.12.09 |
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| CN1796752A (en) | 2006-07-05 |
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Granted publication date: 20100505 Termination date: 20101220 |