CN203515828U - Automobile natural gas engine control system - Google Patents
Automobile natural gas engine control system Download PDFInfo
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- CN203515828U CN203515828U CN201320619041.XU CN201320619041U CN203515828U CN 203515828 U CN203515828 U CN 203515828U CN 201320619041 U CN201320619041 U CN 201320619041U CN 203515828 U CN203515828 U CN 203515828U
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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
Abstract
The utility model discloses an automobile natural gas engine control system which comprises a rotation speed sensor, a gas sensor, a temperature sensor and a control module. The rotation speed sensor, the gas sensor and the temperature sensor are connected with a signal processing circuit. The control module comprises a main MCU, an ignition MCU, a jetting MCU, an electric control ignition circuit, a fuel gas jetting control circuit and a motor control circuit. The main MCU is connected with the signal processing circuit and the ignition MUC and the jetting MCU are connected with the main MCU. The motor control circuit is connected with the main MCU. The motor control circuit is connected with an idling stepping motor. The electric control ignition circuit is connected with the ignition MCU and an ignition coil. The fuel gas jetting control circuit is connected with the jetting MCU and a natural gas jetting valve and further connected with a fuel feeding unit. The main MCU is connected with an engine monitoring unit which is connected with a buzzer and an alarm light. The reliability of the automobile natural gas engine control system is high.
Description
Technical field
The utility model relates to a kind of engine control system, particularly relates to a kind of automotive natural gas engine control system.
Background technique
Along with the development of World Economics, oneself becomes a kind of indispensable transport facility in people's life automobile, yet on energy environment issues, pollution and oil crisis have become two subject matters of 21 century facing mankind.In order to reduce noxious emission and to reduce energy consumption, substitute fuel, all at active development new energy, is found in countries in the world.Rock gas is subject to the attention of countries in the world day by day with its good availability, low contaminativity and Economy, therefore the motor that the rock gas of take is fuel also becomes the hot research problem of various countries; Motor is as the heart of automobile, and its performance quality directly affects power performance and the travelling comfort of automobile.Combustion gas (CNG, LPG etc.) automobile more has the advantages such as energy-saving and environmental protection and is promoted the use of because of it.And natural gas engine performance is decided by the accurate control to fuel gas injection amount, ignition energy and ignition advance angle to a great extent, therefore to the intellectual technology research of its automatical control system, be the important development direction of engine electric-controlled technology, and in computer technology, the embedded promoting technology as core of take engine electric-controlled technical development, and the exploitation of the automatical control system of the natural gas engine based on embedded real-time operating system becomes a development trend.
Model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of automotive natural gas engine control system is provided.This automotive natural gas engine control system is low in energy consumption, and efficiency is high, and reliability is high, and using effect is good.
For achieving the above object, the technical solution adopted in the utility model is: automotive natural gas engine control system, it is characterized in that: comprise for detection of engine speed and crankshaft-position signal determining speed probe constantly of natural gas injection benchmark, for detection of the gas transducer of natural gas leaking, for detection of the temperature transducer of engine temperature, and the control module for receiving above-mentioned each sensor output signal and final controlling element being controlled, described final controlling element comprises spark coil, gas injector and idle speed step motor, described speed probe, gas transducer and temperature transducer are all connected to signal processing circuit, described control module comprises main MCU, igniting MUC, spray MCU, electronic control ignition circuit, fuel gas injection control circuit and circuit for controlling motor, the input end of described main MCU and the output terminal of signal processing circuit join, described igniting MUC and injection MCU all join with main MCU, the input end of described circuit for controlling motor and the output terminal of main MCU join, output terminal and the idle speed step motor of described circuit for controlling motor join, the input end of described electronic control ignition circuit joins with the output terminal of igniting MCU, output terminal and the spark coil of described electronic control ignition circuit join, the input end of described fuel gas injection control circuit joins with the output terminal that sprays MCU, output terminal and the gas injector of described fuel gas injection control circuit join, the input end of described fuel gas injection control circuit is also connected to fuel supply unit, the output terminal of described main MCU is also connected to engine monitoring unit, described engine monitoring unit is connected to buzzer and the alarm indicator lamp for reporting to the police when the system failure, described buzzer and alarm indicator lamp are arranged on automobile center console.
Above-mentioned automotive natural gas engine control system, is characterized in that: described main MCU is ATmega8, and described igniting MCU is ATmega8, and described injection MCU is ATmega128.
The utility model compared with prior art has the following advantages: simple in structure, rationally novel in design, functional reliability is high, and using effect is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Description of reference numerals:
Embodiment
A kind of automotive natural gas engine control system as shown in Figure 1, comprise for detection of engine speed and crankshaft-position signal determining speed probe 1 constantly of natural gas injection benchmark, for detection of the gas transducer 2 of natural gas leaking, for detection of the temperature transducer 3 of engine temperature, and the control module 5 for receiving above-mentioned each sensor output signal and final controlling element being controlled, described final controlling element comprises spark coil 7, gas injector 8 and idle speed step motor 6, described speed probe 1, gas transducer 2 and temperature transducer 3 are all connected to signal processing circuit 4, described control module 5 comprises main MCU5-1, igniting MUC5-2, spray MCU5-3, electronic control ignition circuit 5-4, fuel gas injection control circuit 5-5 and circuit for controlling motor 5-6, the output terminal of the input end of described main MCU5-1 and signal processing circuit 4 joins, described igniting MUC5-2 and injection MCU5-3 all join with main MCU5-1, the input end of described circuit for controlling motor 5-6 and the output terminal of main MCU5-1 join, the output terminal of described circuit for controlling motor 5-6 and idle speed step motor 6 join, the input end of described electronic control ignition circuit 5-4 joins with the output terminal of igniting MCU5-2, output terminal and the spark coil 7 of described electronic control ignition circuit 5-4 join, the input end of described fuel gas injection control circuit 5-5 joins with the output terminal that sprays MCU5-3, output terminal and the gas injector 8 of described fuel gas injection control circuit 5-5 join, the input end of described fuel gas injection control circuit 5-5 is also connected to fuel supply unit 9, the output terminal of described main MCU5-1 is also connected to engine monitoring unit 10, described engine monitoring unit 10 is connected to buzzer 11 and the alarm indicator lamp 13 for reporting to the police when the system failure, described buzzer 11 and alarm indicator lamp 13 are arranged on automobile center console.
During use, the rock gas that fuel supply unit 9 is used is the compressed natural gas being provided by gas cylinder (CNG), and outlet pressure reaches 20MPa, has realized reliable memory and the pressure conversion of high-pressure natural gas, and can carry out Real-Time Monitoring to supply gas pressure.Igniting MCU5-2 is responsible for igniting specially, data and the real engine runnability according to main MCU5-1, calculated, and the closing time of the accurate control points fire moment and spark coil, realizes Motronic control maps igniting; Spray MCU5-3 and be responsible for fuel gas injection specially, data and the real engine runnability according to main MCU5-1, calculated, accurately control fuel gas injection constantly and emitted dose, realizes engine electric-controlled fuel gas injection; Main MCU5-1 mainly receives the data of various sensor collections and calculates, carry out the idle speed control of motor simultaneously and carry out real-time Communication for Power with engine monitoring unit 10, in idling process, complete entering the accurate control of air quantity, thereby guarantee the stable of engine speed, be responsible for communicating by letter between the external world and motor simultaneously, understand in real time the current state of motor, for next step engine control provides good information feedback, and respectively igniting and jet data are transferred to igniting MCU5-2 and spray MCU5-3, extra control function is provided simultaneously.Speed probe 1 is the Hall transducer that is positioned at distributor, catches the trailing edge of distributor middle gear by sensor, thereby carries out the calculating of rotating speed and the judgement of each cylinder top dead center, to carry out accurate IGNITION CONTROL.The signals collecting conversion circuit of temperature transducer 3 is bridge measurement form, and the amplification that utilizes the amplifier of single power supply to realize signal is processed.By main MCU5-1 output control pulse, through the stepper motor in circuit for controlling motor 5-6, drive chip finally signal to be exported to 4 input ends of idle speed step motor 6, control rotation direction and the running step number of idle speed step motor 6, thereby the size adjustment that realizes air inlet bypass valve aperture has completed the control of idling process.Fuel gas injection control circuit 5-5 adopts switch type currrent feedback power amplification circuit, utilizes pulsewidth modulation (PWM) principle, and output signal is amplified through power composite, on off state; Fuel gas injection control circuit 5-5 controls by spraying MCU5-3, by gathering engine rotational speed signal, suction pressure signal, throttle position signal and oxygen sensor signal etc., control the accurate control that gas injector 8 is realized engine gas delivery volume, thereby effectively control air fuel ratio, make the working state of motor in stability and high efficiency; By speed probe 1, obtain rotating speed and crankshaft-position signal, determine that fuel sprays benchmark constantly.The spark ignition of motor is by a whole set of electric equipment and parts, under cooperatively interacting, the low tension of automobile is become to high-tension electricity, utilization is contained in the indoor spark gap electric discharge of combusted cylinder, produce electrical spark, inflammable mixture is lighted to acting, and can automatically regulate firing time by engine operation requirement, make igniting reliable, accurate; The break-make of control signal process electronic control ignition circuit 5-4 control point fire coil 7 primary circuits of igniting MCU5-2 output, thus make secondary induction go out high pressure, complete engine electronic control system igniting.Engine monitoring unit 10 is divided into two-layer configuration, and lower-position unit is comprised of sensor, execution architecture and ECU (Electrical Control Unit), and upper-position unit consists of PC; When natural gas occur to be revealed, gas transducer 2 can detect leakage gas in time, buzzer 11 and alarm indicator lamp 12 and send alarm signal.
In the present embodiment, described main MCU5-1 is ATmega8, and described igniting MCU5-2 is ATmega8, and described injection MCU5-3 is ATmega128.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (2)
1. automotive natural gas engine control system, it is characterized in that: comprise for detection of engine speed and crankshaft-position signal determining speed probe (1) constantly of natural gas injection benchmark, for detection of the gas transducer (2) of natural gas leaking, for detection of the temperature transducer (3) of engine temperature, and the control module (5) for receiving above-mentioned each sensor output signal and final controlling element being controlled, described final controlling element comprises spark coil (7), gas injector (8) and idle speed step motor (6), described speed probe (1), gas transducer (2) and temperature transducer (3) are all connected to signal processing circuit (4), described control module (5) comprises main MCU(5-1), igniting MUC(5-2), spray MCU(5-3), electronic control ignition circuit (5-4), fuel gas injection control circuit (5-5) and circuit for controlling motor (5-6), the output terminal of input end described main MCU(5-1) and signal processing circuit (4) joins, described igniting MUC(5-2) and spray MCU(5-3) all with main MCU(5-1) join, the input end of described circuit for controlling motor (5-6) and main MCU(5-1) output terminal join, the output terminal of described circuit for controlling motor (5-6) and idle speed step motor (6) join, the input end of described electronic control ignition circuit (5-4) with igniting MCU(5-2) output terminal join, the output terminal of described electronic control ignition circuit (5-4) and spark coil (7) join, the input end of described fuel gas injection control circuit (5-5) with spray MCU(5-3) output terminal join, the output terminal of described fuel gas injection control circuit (5-5) and gas injector (8) join, the input end of described fuel gas injection control circuit (5-5) is also connected to fuel supply unit (9), described main MCU(5-1) output terminal is also connected to engine monitoring unit (10), described engine monitoring unit (10) is connected to buzzer (11) and the alarm indicator lamp (13) for reporting to the police when the system failure, described buzzer (11) and alarm indicator lamp (13) are arranged on automobile center console.
2. automotive natural gas engine control system according to claim 1, is characterized in that: be described main MCU(5-1) ATmega8, and described igniting MCU(5-2) be ATmega8, described injection MCU(5-3) be ATmega128.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619041.XU CN203515828U (en) | 2013-09-30 | 2013-09-30 | Automobile natural gas engine control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619041.XU CN203515828U (en) | 2013-09-30 | 2013-09-30 | Automobile natural gas engine control system |
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| Publication Number | Publication Date |
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| CN203515828U true CN203515828U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320619041.XU Expired - Fee Related CN203515828U (en) | 2013-09-30 | 2013-09-30 | Automobile natural gas engine control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121103A (en) * | 2014-07-28 | 2014-10-29 | 安庆中船柴油机有限公司 | Intelligent control system for intermediate-speed dual-fuel engine |
| CN107605609A (en) * | 2017-10-30 | 2018-01-19 | 厦门大学 | Multi-cylinder engine fault pre-alarming device and method under a kind of idling operation |
| CN109854392A (en) * | 2018-12-29 | 2019-06-07 | 国营第六一六厂 | A kind of control cabinet suitable for gas engine unit |
-
2013
- 2013-09-30 CN CN201320619041.XU patent/CN203515828U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121103A (en) * | 2014-07-28 | 2014-10-29 | 安庆中船柴油机有限公司 | Intelligent control system for intermediate-speed dual-fuel engine |
| CN107605609A (en) * | 2017-10-30 | 2018-01-19 | 厦门大学 | Multi-cylinder engine fault pre-alarming device and method under a kind of idling operation |
| CN107605609B (en) * | 2017-10-30 | 2020-01-07 | 厦门大学 | Fault early warning device and method for multi-cylinder internal combustion engine under idle working condition |
| CN109854392A (en) * | 2018-12-29 | 2019-06-07 | 国营第六一六厂 | A kind of control cabinet suitable for gas engine unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140930 |
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| EXPY | Termination of patent right or utility model |