CN210422807U - Self-suction engine for natural gas generator set - Google Patents
Self-suction engine for natural gas generator set Download PDFInfo
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- CN210422807U CN210422807U CN201921507660.3U CN201921507660U CN210422807U CN 210422807 U CN210422807 U CN 210422807U CN 201921507660 U CN201921507660 U CN 201921507660U CN 210422807 U CN210422807 U CN 210422807U
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Abstract
The utility model discloses a natural gas generating set is with from inhaling formula engine, including first blender, gas air feeder, second blender and oxygen injection apparatus, the gas outlet of second blender is connected to the engine body through the air inlet pipeline, installs the air inlet control device on the air inlet pipeline, arranges on the engine body to install and is connected to the parameter detection device, and gas air feeder, oxygen injection apparatus, air inlet control device and parameter detection device are connected to the electrical control unit ECU respectively, and the electrical control unit ECU is connected to ignition coil; the oxygen injection device increases the oxygen content entering the cylinder, simultaneously does not change the exhaust volume of the engine, improves the dynamic property and the economical efficiency of the engine, does not deteriorate the emission, can further increase the ignition advance angle of the engine under the oxygen-enriched combustion condition to improve the combustion efficiency of the engine, and can effectively reduce the low-emission modification cost of the engine.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a natural gas generating set is with inhaling formula engine certainly.
Background
At present, along with the upgrading of emission regulations, the existing lean-burn self-priming natural gas engine is difficult to adapt to stricter emission regulation requirements, the engine needs to be changed into a theoretical air-fuel ratio plus three-way catalytic converter, the theoretical air-fuel ratio technical route has high requirements on the heat load of the engine, brand new materials and design requirements need to be made on the whole lean-burn engine, the cost is huge, and the reliability of the engine in long-time use is reduced.
Through research, the existing lean-burn emission bottleneck is mainly NOxOut of compliance, if NO can be reduced by some meansxAnd (4) emission, which can greatly increase the cost of modifying the engine. For example, the current reduction of NOxThe mature proposal is to use denitration equipment, and the product is generally used for large-scale generating set projects and is rarely used for single small generating sets (such as generating sets below 200 kW) due to high product price.
According to analysis of NOxThe main factor of production is N2And O2Chemical reactions occur at high temperatures and pressures, and therefore reducing the in-cylinder temperature of the engine effectively reduces NOx production. Specifically, the temperature in the cylinder of the engine can be reduced by improving the air inflow of the engine, and the method of supercharging air intake is usually adopted at present to improve the air inflow of the engine, namely, the excess air in the cylinder is improved. If the air is increased by increasing the pressurizing capacity, the amount of oxygen entering the cylinder is increased and the amount of nitrogen is increased due to the increase of the air amount, so that NO is generatedxThe reduction range of (a) is severely limited and the amount of supercharged air is not well controlled, so the improvement effect is not obvious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a spout the pure oxygen in the air inlet pipeline is provided, increase the content that gets into oxygen in the cylinder, do not change the displacement of engine simultaneously again, realize the intensive burning of engine, improve the natural gas generating set of engine thermal efficiency fast and use from inhaling formula engine.
In order to solve the technical problem, the technical scheme of the utility model is that: natural gas generating set is with inhaling formula engine, including the first blender that is equipped with air inlet, another air inlet of first blender is connected with gas air feeder, the gas outlet of first blender passes through the air inlet of tube coupling to second blender, another air inlet of second blender is connected with oxygen injection apparatus, the gas outlet of second blender is through the pipe connection that admits air to the engine body, install the controlling means that admits air on the intake pipe, arrange on the engine body and install parameter detection device, gas air feeder oxygen injection apparatus admit air controlling means with parameter detection device is connected to respectively install in electrical unit ECU on the engine body, electrical unit ECU still be connected to install in ignition coil on the engine body.
As a preferable technical scheme, the oxygen injection device comprises a high-pressure oxygen storage device, the high-pressure oxygen storage device is connected to the second mixer through an oxygen delivery pipe, an oxygen pressure regulating valve, a one-way valve, an oxygen temperature pressure sensor and an oxygen injection control valve are sequentially connected in series on the oxygen delivery pipe along the oxygen advancing direction, and the oxygen temperature pressure sensor and the oxygen injection control valve are respectively connected to the electronic control unit ECU.
As a preferable technical scheme, the gas supply device comprises a gas supply pipe connected between a natural gas source and the first mixer, a gas control valve and a gas temperature and pressure sensor are sequentially connected in series on the gas supply pipe along the natural gas advancing direction, and the gas control valve and the gas temperature and pressure sensor are respectively connected to the electronic control unit ECU.
As a preferable technical solution, the intake control device includes an electronic throttle valve and an intake temperature and pressure sensor connected in series on the intake pipe in the direction of gas travel, and the electronic throttle valve and the intake temperature and pressure sensor are respectively connected to the ECU.
As a preferred technical solution, the parameter detecting device includes an oxygen sensor installed at an exhaust end of the engine body, a water temperature sensor for detecting a water temperature of the engine body, a rotational speed sensor for detecting a rotational speed of the engine body, and an oil pressure sensor for detecting an oil pressure in the engine body, and the oxygen sensor, the water temperature sensor, the rotational speed sensor, and the oil pressure sensor are respectively connected to the ECU.
Due to the adoption of the technical scheme, the utility model discloses it has following technique and has an effect: the engine is used as a common power device, the average load is higher, the engine generally runs for 24 hours under the load of 70% -80%, the pure oxygen is injected into the air inlet pipeline, the oxygen content in the air cylinder is increased, the exhaust gas quantity of the engine is not changed, the power performance and the economical efficiency of the engine are improved, the emission is not deteriorated, compared with the method that the air quantity is simply increased, the power performance is stronger under the condition of keeping the same air cylinder pressure, the engine can carry out oxygen-rich and low-nitrogen combustion under the condition of large-load running, and the NO of the engine can be effectively reducedxThe emission can be realized, the ignition advance angle of the engine can be further increased under the condition of oxygen-enriched combustion to improve the combustion efficiency of the engine, and the oxygen injection amount is controlled to supply according to the load of the engine, so that the aim of quickly improving the thermal efficiency of the engine is fulfilled, and the low-emission modification cost of the engine can be effectively reduced.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a work flow diagram of an embodiment of the present invention;
in the figure: 1-an air filter; 2-a first mixer; 3-a second mixer; 4-natural gas source; 5-air supply pipe; 6-a gas control valve; 7-gas temperature pressure sensor; 8-high pressure oxygen storage device; 9-oxygen supply pipe; 10-oxygen pressure regulating valve; 11-a one-way valve; 12-oxygen temperature pressure sensor; 13-an oxygen injection control valve; 14-an air intake line; 15-an engine block; 16-an electronic throttle; 17-intake air temperature pressure sensor; 18-an electronic control unit ECU; 19-an oxygen sensor; 20-a water temperature sensor; 21-a rotational speed sensor; 22-oil pressure sensor; 23-an exhaust pipe; 24-ignition coil.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, the self-priming engine for the natural gas generator set comprises a first mixer 2 provided with an air inlet, namely, the air inlet of the first mixer 2 is connected with an air filter 1 for conveying fresh air into the first mixer 2, another air inlet of the first mixer 2 is connected with a gas supply device, an air outlet of the first mixer 2 is connected to an air inlet of a second mixer 3 through a pipeline, and another air inlet of the second mixer 3 is connected with an oxygen injection device. The first mixer 2 and the second mixer 3 are respectively provided with two air inlets and an air outlet, wherein the first mixer 2 is used for mixing air and natural gas, and the second mixer 3 is used for injecting pure oxygen into the mixed gas of the air and the natural gas so as to improve the oxygen content in the gas fuel.
Specifically, the gas supply device comprises a gas supply pipe 5 connected between a natural gas source 4 and the first mixer 2, and a gas control valve 6 and a gas temperature and pressure sensor 7 are sequentially connected on the gas supply pipe 5 in series along the natural gas advancing direction. The gas control valve 6 is controlled by a control part of the engine, the feeding amount of the natural gas is controlled by the opening size of the valve, and the gas temperature and pressure sensor 7 is used for measuring the temperature and the pressure of the natural gas in real time and transmitting signals to the control part of the engine. The oxygen injection device comprises a high-pressure oxygen storage device 8, the high-pressure oxygen storage device 8 can be arranged as an oxygen storage bottle, an oxygen storage tank and the like, the high-pressure oxygen storage device 8 is connected to the second mixer 3 through an oxygen delivery pipe 9, an oxygen pressure regulating valve 10, a one-way valve 11, an oxygen temperature pressure sensor 12 and an oxygen injection control valve 13 are sequentially connected to the oxygen delivery pipe 9 in series along the oxygen advancing direction, and the oxygen pressure regulating valve 10 and the oxygen injection control valve 13 are controlled by a control component of an engine. The oxygen pressure regulating valve 10 is used for regulating the oxygen delivery pressure to control the oxygen delivery pressure within an allowable range, the one-way valve 11 can prevent the oxygen pipeline from generating air return, and the oxygen injection control valve 13 can control the feeding amount of oxygen.
The air outlet of the second mixer 3 is connected to an engine body 15 through an air inlet pipeline 14, and an air inlet control device is installed on the air inlet pipeline 14. The intake control device includes an electronic throttle valve 16 and an intake temperature and pressure sensor 17 that are connected in series in the intake pipe 14 in the gas traveling direction. The engine workload can be controlled by means of the electronic throttle 16, and the intake air temperature and pressure sensor 17 is used to measure the temperature and pressure of the mixture in the intake line 14 and transmit it to the engine control unit for engine workload control or regulation.
The engine body 15 is provided with a parameter detection device, the gas supply device, the oxygen injection device, the air intake control device and the parameter detection device are respectively connected to an electronic control unit ECU18 installed on the engine body 15, and the electronic control unit ECU18 is a control part of the engine, so that the gas control valve 6, the gas temperature and pressure sensor 7, the oxygen temperature and pressure sensor 12, the oxygen injection control valve 13, the electronic throttle valve 16 and the air intake temperature and pressure sensor 17 are respectively connected to the electronic control unit ECU 18. The parameter detection device comprises an oxygen sensor 19 mounted at the exhaust end of the engine body 15, a water temperature sensor 20 for detecting the water temperature of the engine body 15, a rotating speed sensor 21 for detecting the rotating speed of the engine body 15 and an engine oil pressure sensor 22 for detecting the engine oil pressure in the engine body 15, wherein the oxygen sensor 19, the water temperature sensor 20, the rotating speed sensor 21 and the engine oil pressure sensor 22 are respectively connected to the electronic control unit ECU 18. The exhaust end of the engine body 15 is provided with an exhaust pipe 23, the oxygen sensor 19 is mounted on the exhaust pipe 23 and used for detecting the oxygen concentration in the exhaust pipe 23, the water temperature sensor 20 detects the temperature of cooling water in the engine body 15, the rotating speed sensor 21 is used for measuring the rotating speed of the engine body 15, and the engine oil pressure sensor 22 is used for measuring the engine oil pressure in the engine body 15. The ECU18 is also connected to an ignition coil 24 mounted on the engine block 15 for controlling ignition of the engine block 15.
Pure oxygen is injected into the air inlet pipeline 14, the oxygen injection amount is controlled by the ECU18, the oxygen content in the cylinder of the engine body 15 is increased, the exhaust amount of the engine body 15 is not changed, the whole power performance and the economical efficiency of the engine are improved, the emission is not deteriorated, and the method has stronger power performance under the condition of keeping the same cylinder pressure than the method of simply increasing the air amount. Namely, the oxygen increasing of the non-supercharged engine is used for realizing the enhanced combustion effect of the engine, thereby achieving the purpose of rapidly improving the heat efficiency of the engine. The embodiment is specially suitable for self-absorption natural gas engine products below 200kW, and NO can be effectively reduced on the aspect of low emission control of the enginexThe fuel economy of the engine under heavy load is improved, and the low-emission modification cost of the engine can be effectively reduced.
Under normal environmental conditions, the two most critical factors controlling engine emissions are the air-fuel ratio of the engine and the ignition advance angle of the engine, which is adjusted and controlled by the ECU18 according to the actual load, speed, water temperature, etc. of the engine. The air-fuel ratio is controlled by adjusting the ratio of fuel gas and air entering the engine, and the air-fuel ratio adjustment of this embodiment is achieved by controlling the fuel gas control valve 6 and the oxygen injection control valve 13. Therefore, in the present embodiment, the opening degrees of the gas control valve 6 and the oxygen injection control valve 13 and the magnitude of the ignition angle of the ignition coil 24 are key points for achieving low emission control of the engine.
The embodiment also discloses a low-emission control strategy of the self-priming engine for the natural gas generator set, which is shown in a combined figure 2 and comprises the following steps:
step one, standard parameter formation
The closing rate of the oxygen injection control valve 13, the minimum pressure value Ymin of oxygen delivery in the oxygen delivery pipe 9, the water temperature high limit value, the engine oil pressure low limit value and the engine oil pressure high limit value in the running process of the engine are set in the electronic control unit ECU18 and are used as reference standard values to be compared with detection values, and corresponding adjustment measures are taken according to the comparison results to adjust the working state of the engine.
By utilizing a bench test, the electronic control unit ECU18 is matched to obtain a closed-loop correction table A1 of the engine and an ignition angle setting table Z1 of the ignition coil 24 when the engine runs abnormally; in addition, the method of obtaining the closed-loop correction table a0 of the engine and the ignition angle setting table Z0 of the ignition coil 24 during normal operation of the engine and obtaining the air-fuel ratio closed-loop table and the ignition advance angle table by using the bench test is well known to those skilled in the art and will not be described in detail herein.
Step two, judging the state of the engine
The ECU18 receives in real time the measurement values and the status information of the gas temperature and pressure sensor 7, the oxygen temperature and pressure sensor 12, the oxygen sensor 19, the water temperature sensor 20, the rotation speed sensor 21, the oil pressure sensor 22, and the intake temperature and pressure sensor 17, the opening values and the status information of the gas control valve 6, the oxygen injection control valve 13, and the electronic throttle valve 16, and the status information of the ignition coil 24 and the ECU18 themselves; the electronic control unit ECU18 can receive the above information, and if the information is judged to be valid, the engine is judged to operate normally; if any of the above information cannot be received by the ECU18 or the information judgment is invalid, it is judged that the engine is running abnormally. Whether the running state of the engine is normal or not is judged through the electronic control unit ECU18, and corresponding measures are taken.
Step three, controlling strategy for abnormal operation of engine
The ECU18 triggers corresponding alarm information to prompt an alarm fault code, and determines a non-stop fault or a stop fault according to the fault code, and the ECU18 operates a corresponding strategy according to the nature of the fault.
Non-stop failure: the electric control unit ECU18 can not issue a control command to the oxygen injection control valve 13, the electric control unit ECU18 can not receive the feedback signal of the oxygen injection control valve 13, the electric control unit ECU18 can not receive the detection information of the oxygen temperature and pressure sensor 12, the oxygen temperature and pressure sensor 12 detects the actual delivery pressure value of oxygen in the oxygen feeding pipe 9 is less than the minimum pressure value Ymin, when the oxygen sensor is in fault, the electric control unit ECU18 judges that the fault is not shut down.
Non-shutdown failure strategy: the ECU18 controls the oxygen injection control valve 13 not to open, and if the oxygen injection control valve 13 is in an open state during a fault, the ECU18 controls the oxygen injection control valve 13 to close according to the set closing rate; the oxygen sensor 19 detects the concentration of oxygen ions in the exhaust gas of the engine body 15, and transmits it to the electronic control unit ECU18, the air-fuel ratio closed-loop control is realized by the electronic control unit ECU18, and the fuel control valve 6 is caused to execute the opening degree in accordance with the closed-loop correction table a1, meanwhile, the gas temperature and pressure sensor 7 detects the temperature and pressure signals of the natural gas in the gas feed pipe 5 in real time, and transmitted to the electronic control unit ECU18, processed by the electronic control unit ECU18 to form an opening degree correction signal for the gas control valve 6, the degree of opening of the gas control valve 6 is corrected, and if the oxygen sensor 19 fails, the electronic control unit ECU18 performs open-loop air-fuel ratio control, the gas control valve 6 performs opening in accordance with data set inside the electronic control unit ECU18, the ECU18 controls the ignition coil 24 to perform an ignition operation in accordance with the ignition angle map Z1 based on the above information.
Shutdown failure: the ECU18 receives the detection signals of the water temperature sensor 20 and the oil pressure sensor 22, compares the detection signals with the preset water temperature high limit value, the preset oil pressure low limit value and the preset oil pressure high limit value, and determines that the engine is in a shutdown fault when a water temperature detection value is higher than the water temperature high limit value, an oil pressure detection value is lower than the oil pressure low limit value or/and the oil pressure detection value is higher than the oil pressure high limit value.
Shutdown failure strategy: the ECU18 controls the gas control valve 6, the oxygen injection control valve 13, and the ignition coil 24 to close respectively, and the engine is stopped.
In the engine control process, finally, under the control of the electronic control unit ECU18, the actual opening degree of the gas control valve 6 is K2, the actual opening degree of the oxygen injection valve 13 is J2, the actual ignition angle of the ignition coil 24 is Z2, and the three values are parameters finally formed by the engine according to actual operating conditions.
Step four, controlling the engine to operate normally
The intake temperature and pressure sensor 17 detects the temperature and pressure information of the intake pipe 14, and the ECU18 processes and calculates the received information to obtain the load of the engine, and selects an operation control strategy according to the load.
When the engine load is less than 70%, the ECU18 controls the oxygen injection control valve 13 not to open, controls the gas control valve 6 to open, that is, the oxygen sensor 19 detects the oxygen ion concentration in the exhaust gas of the engine body 15, and transmits it to the electronic control unit ECU18, the air-fuel ratio closed-loop control is realized by the electronic control unit ECU18, and the fuel control valve 6 is caused to execute the opening degree in accordance with the closed-loop correction table a0, meanwhile, the gas temperature and pressure sensor 7 detects the temperature and pressure signals of the natural gas in the gas feed pipe 5 in real time, and transmitted to the electronic control unit ECU18, processed by the electronic control unit ECU18 to form an opening degree correction signal for the gas control valve 6, the electronic control unit ECU18 controls the ignition coil 24 to perform an ignition operation in accordance with the ignition angle map Z0, based on the information obtained by correcting the degree of opening of the gas control valve 6;
when the engine load is equal to or greater than 70% and equal to or less than 100%, the electronic control unit ECU18 controls the oxygen injection control valve 13 to open and controls the fuel control valve 6 to open, that is, the electronic control unit ECU18 controls the opening degree of the oxygen injection control valve 13 according to the actual load of the engine obtained by calculation, and the load is proportional to the opening degree of the oxygen injection control valve 13, that is, the larger the load is, the larger the opening degree of the oxygen injection control valve 13 is, the smaller the load is, the smaller the opening degree of the oxygen injection control valve 13 is, the higher the rotation speed is, the larger the opening degree of the oxygen injection control valve 13 is, the lower the rotation speed is, and the smaller the opening degree of the oxygen injection control. And an opening correction signal of the oxygen injection control valve 13 is formed in cooperation with the electronic control unit ECU18 based on the detection information of the water temperature sensor 20 and the oxygen temperature pressure sensor 12, and the opening of the oxygen injection control valve 13 is corrected. The oxygen sensor 19 detects the oxygen ion concentration in the exhaust gas of the engine body 15, transmits the oxygen ion concentration to the ECU18, performs closed-loop control of the air-fuel ratio by the ECU18, causes the gas control valve 6 to open according to the closed-loop correction table a0, simultaneously detects the temperature and pressure signals of the natural gas in the gas feed pipe 5 in real time by the gas temperature and pressure sensor 7, transmits the signals to the ECU18, processes the signals to form an opening correction signal of the gas control valve 6 by the ECU18, corrects the opening of the gas control valve 6, and controls the ignition coil 24 to perform an ignition operation according to the ignition angle setting table Z0 based on the information from the ECU 18.
In this step, when the oxygen sensor fails, the opening degree of the gas control valve, the opening degree of the oxygen injection control valve, and the actual ignition advance angle of the ignition coil are determined in the same manner as in step three.
The engine is used as a common power device, the average load is high, the engine generally runs for 24 hours under the load of 70% -80%, aiming at the running characteristics of the engine, the oxygen supply control is carried out aiming at the load (more than 70% load) with longer specific running time, so that the engine can carry out oxygen-rich and low-nitrogen combustion under the condition of large-load running, and the NO of the engine can be effectively reducedxAnd the ignition advance angle of the engine can be further increased under the oxygen-enriched combustion condition, the combustion efficiency of the engine is improved, and the supply amount is controlled according to the actual load of the engine. In the present embodiment, the oxygen is used only when the engine is operating at a high load, and the oxygen is not supplied when the engine is operating at a low load. When the oxygen pressure of the engine is insufficient, the engine can also normally work, and the closed-loop operation is carried out under the condition that the lambda closed-loop correction table A1 and the ignition angle setting table Z1 are taken as reference conditions, so that the shutdown caused by oxygen cylinder replacement or failure of the oxygen supply equipment is completely avoided.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Natural gas generating set is with inhaling formula engine, including the first blender that is equipped with air inlet, its characterized in that: another air inlet of first blender is connected with gas air feeder, the gas outlet of first blender passes through the air inlet of tube coupling to the second blender, another air inlet of second blender is connected with oxygen injection apparatus, the gas outlet of second blender is through the pipeline connection that admits air to the engine body, install the controlling means that admits air on the intake pipe way, arrange on the engine body and install parameter detection device, the gas air feeder oxygen injection apparatus admit air the controlling means with parameter detection device is connected to respectively install in the electrical unit ECU on the engine body, electrical unit ECU still be connected to install in ignition coil on the engine body.
2. The self-priming engine for natural gas generating set of claim 1, characterized in that: the oxygen injection device comprises a high-pressure oxygen storage device, the high-pressure oxygen storage device is connected to the second mixer through an oxygen delivery pipe, an oxygen pressure regulating valve, a one-way valve, an oxygen temperature pressure sensor and an oxygen injection control valve are sequentially connected to the oxygen delivery pipe in series along the oxygen advancing direction, and the oxygen temperature pressure sensor and the oxygen injection control valve are respectively connected to the electronic control unit ECU.
3. The self-priming engine for a natural gas generator set of claim 2, wherein: the gas supply device comprises a gas supply pipe connected between a natural gas source and the first mixer, a gas control valve and a gas temperature pressure sensor are sequentially connected on the gas supply pipe in series along the advancing direction of natural gas, and the gas control valve and the gas temperature pressure sensor are respectively connected to the electronic control unit ECU.
4. The self-priming engine for a natural gas generator set of claim 3, wherein: the air inlet control device comprises an electronic throttle valve and an air inlet temperature and pressure sensor which are sequentially connected in series on the air inlet pipeline along the air advancing direction, and the electronic throttle valve and the air inlet temperature and pressure sensor are respectively connected to the electronic control unit ECU.
5. The self-priming engine for natural gas generating set of claim 4, characterized in that: the parameter detection device comprises an oxygen sensor arranged at the exhaust end of the engine body, a water temperature sensor for detecting the water temperature of the engine body, a rotating speed sensor for detecting the rotating speed of the engine body and an engine oil pressure sensor for detecting the oil pressure in the engine body, wherein the oxygen sensor, the water temperature sensor, the rotating speed sensor and the engine oil pressure sensor are respectively connected to the electronic control unit ECU.
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| CN201921507660.3U CN210422807U (en) | 2019-09-11 | 2019-09-11 | Self-suction engine for natural gas generator set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500204A (en) * | 2019-09-11 | 2019-11-26 | 潍柴西港新能源动力有限公司 | The self-priming engine of natural gas power unit and its low emission control strategy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500204A (en) * | 2019-09-11 | 2019-11-26 | 潍柴西港新能源动力有限公司 | The self-priming engine of natural gas power unit and its low emission control strategy |
| CN110500204B (en) * | 2019-09-11 | 2023-08-15 | 潍柴西港新能源动力有限公司 | Self-priming engine for natural gas generator set and low-emission control strategy thereof |
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