CN201982190U - Gas engine ignition injection control device - Google Patents
Gas engine ignition injection control device Download PDFInfo
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- CN201982190U CN201982190U CN2011200802517U CN201120080251U CN201982190U CN 201982190 U CN201982190 U CN 201982190U CN 2011200802517 U CN2011200802517 U CN 2011200802517U CN 201120080251 U CN201120080251 U CN 201120080251U CN 201982190 U CN201982190 U CN 201982190U
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Abstract
The utility model provides a gas engine ignition injection control device capable of optimizing the air-fuel ratio, which comprises a circuit board and a CPU (central processing unit) arranged on the circuit board, wherein the circuit board is provided with a main power circuit, a six-way high pressure ignition coil driving circuit, an engine crankshaft signal shaping circuit, an engine camshaft signal shaping circuit, a speed changer gear detecting circuit, an electronic throttle valve communication and interface circuit, a calibration communication interface circuit and an A/D (Analog to Digital) signal sampling circuit respectively electrically connected with the CPU, and a front band oxygen sensor interface circuit electrically connected with the A/D signal sampling circuit, and the device also comprises a manifold branch pipe pressure sensor, a water temperature sensor, a gas pressure sensor, a high-pressure bottle pressure sensor, a liquefier liquid level sensor and a front oxygen sensor respectively electrically connected with the A/D signal sampling circuit. With the technical scheme, the air-fuel ratio of a gas engine is optimized, the working efficiency of the engine is improved, and the waste gas discharge is also reduced.
Description
Technical field
The utility model relates to a kind of gas engine igniting ejection control device.
Background technique
Gas-fueled vehicles development is from the thirties in last century, the history in existing more than 70 year, and particularly through in recent years development, technology is very ripe, and Security and control performance that advanced electronic technology and Machine Manufacturing Technology make gas-fueled vehicles are guaranteed.At present, external gas engine is in the technology of the extensive use third generation, and first generation product is a mechanical type, and the second generation belongs to simple closed loop control, and the third generation is to adopt the electric-controlled injection gas technology.The electric-controlled injection gas burning system adopts high-pressure injection, by throttle sensor, and gas flow sensor, speed probe, cooling-water temperature sensor, intake air temperature sensor, process central processing unit such as pressure transducer and lambda sensor are come control ignition, air fuel ratio etc.Generally speaking, external natural gas engine is through the development of decades, and technical elements moves to maturity, and dependence test equipment is perfect.Current, external to more advanced LNG(LNG Liquefied natural gas) the in-cylinder direct injection technology obtained on probationly in small batches, and its power character, Economy and discharging are all good, but its development difficulty is big, the expense costliness, and cost is also high.
China's gas combustion automobile development starts from the fifties, i.e. low pressure natural gas automobile.The intermediary and later stages eighties domestic full-sized car factory and engine works such as east wind, liberation, go up bavin, Weihe River bavin, Yuchai and continue to increase the product development dynamics, also develop the single fuel electric-control system of oneself in succession, and these systems belong to second generation product mostly.In 2010 the 11 international gas-fueled vehicles of China that puted on display on May 13 to May 15th, 2010, gas station, the exhibition of gas technology equipment in Beijing, see on the automatical control system of the single-fuel engine that we saw, the present electrical control system for engine technology of China, can only belong to two generation half product.And some are by producer's third generation of calling oneself, in fact be adopt the petrol engine electric spray control system to add the automatic compensation adjustment device of combustion gas pulsewidth and with, be not to be truly three generations's machine.
At traditional electronically controlled fuel injection system, the main factor that influences petrol engine discharging is the air fuel ratio of mixed gas, needs 14.7 kilograms air in theory during one kilogram of fuel perfect combustion.The ratio of this air and fuel is called stoichiometric ratio (also claiming air fuel ratio).At motor car engine the intelligence developed software platform that much is used for developing EFI is specially arranged abroad at present, domestic also have many families to introduce, but because fuel such as rock gas, liquefied petroleum gas have the many different factors of burning-point, calory burning, velocity of combustion or the like with gasoline, it obviously is inappropriate directly utilizing the gas engine igniting injection control software of this platform development.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of gas engine igniting ejection control device of energy optimization air fuel ratio.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of gas engine igniting ejection control device, include circuit board and the CPU that installs on circuit board, it is characterized in that: described circuit board is provided with respectively the main power circuit that electrically connects with CPU, six tunnel high-voltage ignition coil drive circuits, the crankshaft signal shaping circuit of motor, the camshaft signal shaping circuit of motor, the transmission gear testing circuit, electronic throttle communication and interface circuit, demarcate communication interface circuit and A/D signal sample circuit, and with the preceding broad domain oxygen sensor interface circuit that the A/D signal sample circuit electrically connects, also include respectively the qi gas branch pipe pressure transducer that electrically connects with the A/D signal sample circuit, cooling-water temperature sensor, the gaseous-pressure sensor, the bomb pressure transducer, liquifier liquid level sensor and preceding lambda sensor.
Of the present utility modelly further be set to: described qi gas branch pipe pressure transducer is installed in the Qi Qizhiguanchu of motor and is monitored qi gas branch pipe place pressure signal, cooling-water temperature sensor is installed in the water outlet place of motor and is monitored water outlet place temperature signal, the gaseous-pressure sensor is installed in the gas nozzle place and is monitored place, gas nozzle air outlet pressure signal, the bomb pressure transducer is installed in the bomb place and is monitored bomb internal pressure signal, the liquifier liquid level sensor is installed in the liquifier place and is monitored liquid level signal in the liquifier, and preceding lambda sensor is installed in the engine exhaust pipe place and monitored engine exhaust pipe place oxygen concentration signals.
Adopt technique scheme, CPU handles and control centre as system signal, combustion gas mixing and spark timing are controlled in real-time feedback and differentiation according to each signal emitter signal, and, in real time motor is carried out best closed loop control according to the control strategy of gas engine and the processing mode and the method for each operating mode.When each sensor obtains the analogue signal such as variance ratio, speed change gear, toxic emission of corresponding ground velocity, engine speed, crank position, air quality, engine temperature, engine load, throttle position, throttle, combustion gas mixing rate in each cylinder is made corresponding control, and cooperate the optimum working efficiency of realizing firing time under the motor closed loop.Wherein, electronic throttle communication and interface circuit are the observing and controlling that system is used for measuring throttle opening and electronic pedal position, and system carries out on-line proving communication usefulness to electronic throttle.
Of the present utility modelly further be set to: also be provided with respectively the secondary power supply that electrically connects with CPU and control circuit, reset circuit, system supplymentary circuit, six tunnel currrent feedback observation circuits on the described circuit board, combustion gas preheats drive circuit, ignition switch observation circuit, burglarproof lock observation circuit, controller communication interface circuit, and the back broad domain oxygen sensor interface circuit that electrically connects with the A/D signal sample circuit, described electronic throttle communication and interface circuit also electrically connect with the A/D signal sample circuit.
Adopt technique scheme, secondary power supply and control circuit effect are detecting ignition switch when work as CPU, and the working power of opening other accessory circuits is when ignition switch is closed, close the power supply of other circuit, be mainly used to reduce the power supply energy consumption under system's off working state; Reset circuit guarantees CPU control unit system proper functioning; The system supplymentary circuit provides the control power supply of gas engine air supply system, makes system have the function that the motor accident extinguishing cuts off air supply system automatically; Six tunnel currrent feedback observation circuits make system carry out accurate high-energy electron IGNITION CONTROL to motor; It is characteristics at the distinctive cold start-up difficulty of single fuel gas motor that combustion gas preheats drive circuit, and carries out preheating processing before combustion gas starts; The ignition switch observation circuit is that ECU (Electrical Control Unit) is used for judging that the driver is dynamic to the relevant manipulation of motor, and to before the engine start, start the back, flame-out before and the relevant treatment of states such as accident extinguishing; But the burglarproof lock observation circuit is an ECU (Electrical Control Unit) being used for of reserving is to the differentiation of motor steer mode; Controller communication interface circuit is that system and PC communication are used for detecting each working state of MCU and are used for demarcating jet pulsewidth under each operating mode of gas engine and ignition advance angle etc., and the runnability of each operation point of on-line measurement gas engine and the control of motor made corresponding adjustment etc.; Back broad domain oxygen sensor interface circuit is that system is used for closed loop oxygen concentration observing and controlling to engine emission, thereby realizes the control to exhaust aftertreatment device, reduces the existence of harmful gas in the waste gas.
Of the present utility modelly further be set to: described CPU model is MC9DS128 again.
Adopt technique scheme, model is that the CPU of MC9DS128 has fast operation, the characteristics that memory span is big.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment's a theory diagram.
Embodiment
As shown in Figure 1, present embodiment includes circuit board and installs that model is the CPU of MC9DS128 on circuit board, circuit board is provided with respectively the main power circuit that electrically connects with CPU, secondary power supply and control circuit, reset circuit, the system supplymentary circuit, six tunnel currrent feedback observation circuits, six tunnel high-voltage ignition coil drive circuits, six road blast nozzle drive circuits, combustion gas preheats drive circuit, the crankshaft signal shaping circuit, the camshaft signal shaping circuit, the transmission gear testing circuit, the ignition switch observation circuit, the burglarproof lock observation circuit, demarcate the communication interface circuit, controller communication interface circuit, electronic throttle communication and interface circuit and A/D signal sample circuit, electronic throttle communication and interface circuit also electrically connect with the A/D signal sample circuit, the A/D signal sample circuit also with preceding broad domain oxygen sensor interface circuit and the back broad domain oxygen sensor interface circuit be located on the circuit board.A/D signal sample circuit also Electricity Federation is connected to qi gas branch pipe pressure transducer, cooling-water temperature sensor, the gaseous-pressure sensor, the bomb pressure transducer, the liquifier liquid level sensor, preceding lambda sensor and post oxygen sensor, described qi gas branch pipe pressure transducer is installed in the Qi Qizhiguanchu of motor and is monitored qi gas branch pipe place pressure signal, cooling-water temperature sensor is installed in the water outlet place of motor and is monitored water outlet place temperature signal, the gaseous-pressure sensor is installed in the gas nozzle place and is monitored place, gas nozzle air outlet pressure signal, the bomb pressure transducer is installed in the bomb place and is monitored bomb internal pressure signal, the liquifier liquid level sensor is installed in the liquifier place and is monitored liquid level signal in the liquifier, before lambda sensor install in the engine exhaust pipe place and monitor engine exhaust pipe place oxygen concentration signals, post oxygen sensor is installed in the rear of tail-gas after treatment apparatus and monitoring oxygen concentration signals in the tail gas behind tail-gas after treatment apparatus.The above-mentioned sensor that electrically connects with the A/D signal sample circuit is sent to CPU with the information that is collected after the A/D signal sample circuit is collected, after the inner corresponding calculation process of CPU, feed back to each circuit on the driving circuit board then, thereby realize the precision control of combustion gas mixing and ignition timing, the final gas engine air fuel ratio that obtains the best.
In the utility model, CPU handles and control centre as system signal, combustion gas mixing and spark timing are controlled in real-time feedback and differentiation according to each signal emitter signal, and, in real time motor is carried out best closed loop control according to the control strategy of gas engine and the processing mode and the method for each operating mode.When each sensor obtains the analogue signal such as variance ratio, speed change gear, toxic emission of corresponding ground velocity, engine speed, crank position, air quality, engine temperature, engine load, throttle position, throttle, combustion gas mixing rate in each cylinder is made corresponding control, and cooperate the optimum working efficiency of realizing firing time under the motor closed loop.Wherein, electronic throttle communication and interface circuit are the observing and controlling that system is used for measuring throttle opening and electronic pedal position, and system carries out on-line proving communication usefulness to electronic throttle.Wherein, secondary power supply and control circuit effect are detecting ignition switch when work as CPU, and the working power of opening other accessory circuits is when ignition switch is closed, close the power supply of other circuit, be mainly used to reduce the power supply energy consumption under system's off working state; Reset circuit guarantees CPU control unit system proper functioning; The system supplymentary circuit provides the control power supply of gas engine air supply system, makes system have the function that the motor accident extinguishing cuts off air supply system automatically; Six tunnel currrent feedback observation circuits make system carry out accurate high-energy electron IGNITION CONTROL to motor; It is characteristics at the distinctive cold start-up difficulty of single fuel gas motor that combustion gas preheats drive circuit, and carries out preheating processing before combustion gas starts; The ignition switch observation circuit is that ECU (Electrical Control Unit) is used for judging that the driver is dynamic to the relevant manipulation of motor, and to before the engine start, start the back, flame-out before and the relevant treatment of states such as accident extinguishing; But the burglarproof lock observation circuit is an ECU (Electrical Control Unit) being used for of reserving is to the differentiation of motor steer mode; Controller communication interface circuit is that system and PC communication are used for detecting each working state of MCU and are used for demarcating jet pulsewidth under each operating mode of gas engine and ignition advance angle etc., and the runnability of each operation point of on-line measurement gas engine and the control of motor made corresponding adjustment etc.; Back broad domain oxygen sensor interface circuit is that system is used for closed loop oxygen concentration observing and controlling to engine emission, thereby realizes the control to exhaust aftertreatment device, reduces the existence of harmful gas in the waste gas.The utility model can also have other mode of executions, and the technological scheme that equal replacement of all employings or equivalent transformation form all drops within the claimed scope of the utility model.
Claims (5)
1. gas engine igniting ejection control device, include circuit board and the CPU that installs on circuit board, it is characterized in that: described circuit board is provided with respectively the main power circuit that electrically connects with CPU, six tunnel high-voltage ignition coil drive circuits, the crankshaft signal shaping circuit of motor, the camshaft signal shaping circuit of motor, the transmission gear testing circuit, electronic throttle communication and interface circuit, demarcate communication interface circuit and A/D signal sample circuit, and with the preceding broad domain oxygen sensor interface circuit that the A/D signal sample circuit electrically connects, also include respectively the qi gas branch pipe pressure transducer that electrically connects with the A/D signal sample circuit, cooling-water temperature sensor, the gaseous-pressure sensor, the bomb pressure transducer, liquifier liquid level sensor and preceding lambda sensor.
2. gas engine igniting ejection control device according to claim 1, it is characterized in that: described qi gas branch pipe pressure transducer is installed in the Qi Qizhiguanchu of motor and is monitored qi gas branch pipe place pressure signal, cooling-water temperature sensor is installed in the water outlet place of motor and is monitored water outlet place temperature signal, the gaseous-pressure sensor is installed in the gas nozzle place and is monitored place, gas nozzle air outlet pressure signal, the bomb pressure transducer is installed in the bomb place and is monitored bomb internal pressure signal, the liquifier liquid level sensor is installed in the liquifier place and is monitored liquid level signal in the liquifier, and preceding lambda sensor is installed in the engine exhaust pipe place and monitored engine exhaust pipe place oxygen concentration signals.
3. gas engine igniting ejection control device according to claim 1 and 2, it is characterized in that: also be provided with respectively the secondary power supply that electrically connects with CPU and control circuit, reset circuit, system supplymentary circuit, six tunnel currrent feedback observation circuits on the described circuit board, combustion gas preheats drive circuit, ignition switch observation circuit, burglarproof lock observation circuit, controller communication interface circuit, and the back broad domain oxygen sensor interface circuit that electrically connects with the A/D signal sample circuit, described electronic throttle communication and interface circuit also electrically connect with the A/D signal sample circuit.
4. gas engine igniting ejection control device according to claim 1 and 2, it is characterized in that: described CPU model is MC9DS128.
5. gas engine igniting ejection control device according to claim 3, it is characterized in that: described CPU model is MC9DS128.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200802517U CN201982190U (en) | 2011-03-24 | 2011-03-24 | Gas engine ignition injection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200802517U CN201982190U (en) | 2011-03-24 | 2011-03-24 | Gas engine ignition injection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982190U true CN201982190U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200802517U Expired - Fee Related CN201982190U (en) | 2011-03-24 | 2011-03-24 | Gas engine ignition injection control device |
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| CN (1) | CN201982190U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121427A (en) * | 2011-03-24 | 2011-07-13 | 温州市气动元件厂 | Ignition injection control device for gas engine |
| CN102817706A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Combustible-ice engine |
| CN103375287A (en) * | 2012-04-19 | 2013-10-30 | 于树怀 | Method of learning air-fuel ratio of natural gas engine |
-
2011
- 2011-03-24 CN CN2011200802517U patent/CN201982190U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121427A (en) * | 2011-03-24 | 2011-07-13 | 温州市气动元件厂 | Ignition injection control device for gas engine |
| CN103375287A (en) * | 2012-04-19 | 2013-10-30 | 于树怀 | Method of learning air-fuel ratio of natural gas engine |
| CN103375287B (en) * | 2012-04-19 | 2016-01-13 | 北京易康泰科汽车电子有限公司 | The air fuel ratio learning method of natural gas engine |
| CN102817706A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Combustible-ice 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: 20110921 Termination date: 20120324 |