CN117703615A - Control method and device for range extender hydrogen-burning engine - Google Patents
Control method and device for range extender hydrogen-burning engine Download PDFInfo
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- CN117703615A CN117703615A CN202311848458.8A CN202311848458A CN117703615A CN 117703615 A CN117703615 A CN 117703615A CN 202311848458 A CN202311848458 A CN 202311848458A CN 117703615 A CN117703615 A CN 117703615A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 19
- 239000001257 hydrogen Substances 0.000 claims abstract description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a control method and a device of a range extender hydrogen-burning engine, and relates to the hydrogen-burning engine control technology. According to the comparison of the target excess air coefficient and the actual excess air coefficient, adjusting the opening of a throttle valve, and adjusting the actual excess air coefficient; when the throttle opening is adjusted to still enable the actual excess air coefficient to meet the target excess air coefficient, determining the air inflow to be compensated, and further starting the electronic supercharger to adjust the air inflow; when the opening of the throttle valve and the adjustment of the electronic supercharger still cannot enable the actual excess air coefficient to meet the target excess air coefficient, the ideal excess air coefficient is ensured in the acceleration process by limiting the injection pulse width of the hydrogen, so that the low emission of NOx is realized. Compared with the prior art, the electronic supercharger is mainly additionally arranged at the air inlet end, the original air inlet system and the original air outlet are basically not required to be changed, the simplicity of the hydrogen-burning engine is ensured, and the implementation is easy.
Description
Technical Field
The invention relates to a hydrogen-burning engine control technology, in particular to a control method and a device of a range extender hydrogen-burning engine.
Background
The fuel of the hydrogen engine is H 2 However, a certain auxiliary agent is needed to be added in the transportation and combustion processes, so that the combustion products of the hydrogen engine are treated by H 2 O and NOx are dominant. NOx emissions are pollutants, and it is necessary to reduce their emissions by certain technical means. However, NOx emissions generation from hydrogen engines is greatly affected by the air excess factor (shown in fig. 1), which generates a large amount of NOx emissions at an air excess factor of less than 1.5, and substantially approaches 0 at an air excess factor > 2.0. While the hydrogen engine air excess factor is greatly affected by the output power of the engine and the capacity of the air system. However, under the condition that the output power of the hydrogen internal combustion engine is not high, particularly in the field of an engine special for a range extender, due to the narrow range of an engine operation interval, the excess air coefficient in the actual operation process can be larger than 2.0 through reasonable air system matching, and under the condition of no post-treatment, the NOx emission can meet the regulation requirement, so that the problems of frequent starting of the engine of the range extender, low exhaust temperature and difficult conversion of the NOx emission are also effectively solved. In the dual supercharging system and the supercharging control method thereof disclosed in publication number CN115638048B, according to the magnitude relation between the actual excess air ratio and the preset excess air ratio, the two turbochargers are coordinately controlled through the first control valve, the second control valve and the third control valve, and when the dual supercharging system is used for a hydrogen engine, the requirement that the emission amount of nitrogen oxides is close to zero can be met. From the publication, it is achieved that the NOx emission is substantially close to zero by using only two turbochargers and compressors, but from the overall air intake and exhaust system, the system adds more control valves and corresponding controls in addition to the two turbochargers and compressors, so it still remains possibleFurther optimized.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art, and provides a control method and a control device for a range extender hydrogen-burning engine, which enable the actual excess air coefficient to be always kept in a target state, thereby realizing low emission of NOx.
When the power requirement is put forward on the hydrogen-burning engine, the hydrogen-burning engine is started in a cold mode, and the rotating speed of the hydrogen-burning engine reaches a set ignition rotating speed; then, the hydrogen-burning engine is started up to run in an idle working condition, and the rotating speed of the hydrogen-burning engine is increased to a set target rotating speed; when the actual demand power is provided for the hydrogen-burning engine, the hydrogen-burning engine is operated under the actual demand power working condition until the whole vehicle sends out an instruction for stopping operation, and then the hydrogen-burning engine is stopped;
when the hydrogen-burning engine enters an idle working condition, the actual excess air coefficient of an air inlet system of the hydrogen-burning engine is adjusted to be a set target excess air coefficient; when the rotating speed of the hydrogen-burning engine is increased from the rotating speed under the idle working condition to the target rotating speed, the target excess air coefficient is taken as a target value, and the actual excess air coefficient is regulated by combining a throttle valve in the air inlet system and an added electronic supercharger; when the hydrogen-burning engine is switched from the working condition working at the target rotating speed to the actual power requirement working condition, the target excess air coefficient is taken as a target value, and the actual excess air coefficient is regulated by combining the electronic booster and the injection pulse width of the fuel.
The cold start is specifically realized by dragging the hydrogen-burning engine through a motor of the hybrid system, so that the rotating speed of the hydrogen-burning engine reaches the ignition rotating speed.
Further, the ignition speed is 500r/min or more.
And after the hydrogen-burning engine enters the idle working condition, the hydrogen-burning engine is operated for a set time to ensure that the actual excess air ratio of the hydrogen-burning engine under the idle working condition is kept as the target excess air ratio.
Further, under the idle working condition, the mode of adjusting the actual excess air coefficient of the air inlet system of the hydrogen-burning engine is that,
acquiring an actual excess air coefficient of an air inlet system under an idle working condition, and comparing the actual excess air coefficient with a target excess air coefficient; if the actual excess air coefficient is smaller than the target excess air coefficient, adjusting the opening of a throttle valve to increase the air inflow of an air inlet system so that the actual excess air coefficient is the target excess air coefficient; and if the actual excess air ratio is larger than the target excess air ratio upper limit, adjusting the opening of a throttle valve to reduce the air inflow of the air inlet system, so that the actual excess air ratio is the target excess air ratio.
Further improves the concrete adjusting mode of adjusting the actual excess air ratio by combining the throttle valve in the air inlet system and the added electronic supercharger together,
acquiring an actual excess air coefficient of an air inlet system when the rotating speed of the hydrogen-burning engine is increased from the rotating speed under the idle working condition to the target rotating speed, and adjusting the opening of a throttle valve according to the actual excess air coefficient and the target excess air coefficient;
if the opening of the throttle valve is in a fully opened state, respectively acquiring a theoretical air demand and an actual air quantity according to the target excess air coefficient and the actual excess air coefficient, and determining a required air quantity to be compensated according to a difference value between the theoretical air demand and the actual air quantity; and determining the target rotating speed of the electronic supercharger according to the air quantity to be compensated, and enabling the rotating speed of the electronic supercharger to be operated to the target rotating speed.
Further, if the actual excess air coefficient is greater than the set coefficient upper limit in the process of increasing the rotational speed of the hydrogen-burning engine, the rotational speed of the electronic supercharger is reduced by a set rotational speed step.
Further improved, the specific adjustment mode for jointly adjusting the actual excess air ratio by combining the electronic booster and the injection pulse width of the fuel is that,
the opening degree of the throttle valve is in a full-open state; increasing the rotating speed of the electronic supercharger until the actual excess air coefficient acquired when the hydrogen-burning engine is switched from the working condition of the target rotating speed to the actual power demand working condition is the target excess air coefficient;
and if the rotating speed of the electronic supercharger is at the upper limit and the actual excess air coefficient is smaller than the target excess air coefficient, limiting the injection pulse width of the hydrogen fuel.
And when the hydrogen-burning engine enters into the actual power demand working condition, the excess air ratio in the air inlet system is adjusted by the mechanical supercharger so as to be the target excess air ratio.
The control device for the range extender hydrogen-burning engine for realizing the control method comprises an air filter, a one-way valve, an electronic supercharger, a gas compressor, a mechanical supercharger, an intercooler, a throttle valve, an air inlet temperature and pressure sensor and a wide-range oxygen sensor; the air filter, the one-way valve, the air compressor, the intercooler, the throttle valve, the air inlet temperature sensor and the air inlet pressure sensor are all arranged on the air inlet pipe, the air inlet pipes at two ends of the one-way valve are provided with bypass pipes, and the electronic supercharger is arranged in the bypass pipes; the mechanical supercharger and the wide-range oxygen sensor are arranged on the exhaust pipe, and the mechanical supercharger is communicated with the air compressor; the electronic supercharger, the air compressor, the mechanical supercharger, the throttle valve, the air inlet temperature and pressure sensor and the wide-range oxygen sensor are all electrically connected with the ECU.
Advantageous effects
The invention has the advantages that: according to the comparison of the target excess air coefficient and the actual excess air coefficient, adjusting the opening of a throttle valve, and adjusting the actual excess air coefficient; when the throttle opening is adjusted to still enable the actual excess air coefficient to meet the target excess air coefficient, determining the air inflow to be compensated, and further starting the electronic supercharger to adjust the air inflow; when the opening of the throttle valve and the adjustment of the electronic supercharger still cannot enable the actual excess air coefficient to meet the target excess air coefficient, the ideal excess air coefficient is ensured in the acceleration process by limiting the injection pulse width of the hydrogen, so that the low emission of NOx is realized. Compared with the prior art, the electronic supercharger is mainly additionally arranged at the air inlet end, the original air inlet system and the original air outlet are basically not required to be changed, the simplicity of the hydrogen-burning engine is ensured, and the invention is easy to realize on hardware facilities.
Drawings
FIG. 1 is a schematic diagram of NOx emissions versus excess air ratio;
FIG. 2 is a schematic diagram of a hydrogen engine torque loading strategy of the present invention;
FIG. 3 is a schematic diagram of a throttle opening control flow in accordance with the present invention;
fig. 4 is a schematic structural diagram of a control system according to the present invention.
Wherein: 1-air filter, 2-check valve, 3-bypass pipe, 4-electronic booster, 5-air inlet pipe, 6-air compressor, 7-mechanical booster, 8-intercooler, 9-throttle valve, 10-exhaust pipe, 11-wide-area oxygen sensor and 12-H 2 Concentration sensor, 13-intake air temperature and pressure sensor.
Detailed Description
The invention is further described below in connection with the examples, which are not to be construed as limiting the invention in any way, but rather as falling within the scope of the claims.
Referring to fig. 2-3, the control method of the range extender hydrogen-burning engine is realized by two control paths, namely a power output control path and an air control path. In fig. 2, the working condition 5 is the same as the working condition 1, and is the engine stop state; working condition 2 represents an idle working condition; working condition 3 represents the working condition of the hydrogen-burning engine working at the target rotating speed; the working conditions 4 include working conditions 4a and 4b, which are actual demand power working conditions.
The power output control path of the present embodiment is specifically as follows.
When the whole vehicle sends out power demand to the engine, the motor of the hybrid system drags the hydrogen-burning engine to more than 500r/min, then hydrogen fuel is injected, the hydrogen-burning engine is started through the ignition system of the hydrogen-burning engine, the idle working condition is entered, the operation is carried out for 10s under the idle working condition, and the actual excess air coefficient of the hydrogen-burning engine under the idle working condition is ensured to be stabilized as the target excess air coefficient. And (3) lifting the rotating speed of the hydrogen-burning engine through the motor to enable the hydrogen-burning engine to enter the working condition 3 so as to enable the hydrogen-burning engine to reach the target rotating speed. And then, according to the actual required power of the whole vehicle, the hydrogen-burning engine is operated to a working condition 4a, namely a required power point. If the actual excess air ratio of the condition 4a is low, it is necessary to adjust to the condition 4b according to the requirement so that the actual excess air ratio is the target excess air ratio. And the hydrogen-burning engine runs under the working condition 4, and after the whole vehicle sends out a command for stopping running, the working condition 4 is changed into the working condition 5, namely the hydrogen-burning engine is stopped, and the next command is waited.
When the whole vehicle is required to send out power to the hydrogen-burning engine, the motor of the hybrid system drags the engine to more than 500r/min, so as to reduce the leakage of hydrogen generated by spraying more hydrogen fuel to overcome the driving torque in the starting process and reduce the NOx emission generated when the air excess coefficient is low.
The operation of the air control path of the present embodiment includes the following steps.
1) When the rotating speed of the hydrogen-burning engine reaches more than 500r/min, the hydrogen-burning engine starts to be started up, and enters an idle working condition. In this process, closed loop control of excess air ratio is achieved by a wide-area oxygen sensor and ECU system. Specifically, the ECU monitors the actual excess air coefficient of the current working condition through a wide-range oxygen sensor, compares the actual excess air coefficient with a target excess air coefficient, and increases the air inflow through adjusting the opening of a throttle valve to enable the actual excess air coefficient to reach the target excess air coefficient if the actual excess air coefficient is smaller than the target excess air coefficient; if the actual excess air ratio exceeds the target excess air ratio upper limit, the air inflow is reduced to reach the target excess air ratio by adjusting the opening of a throttle valve, and finally the air inflow under the idle working condition is stabilized, so that the hydrogen-burning engine stably runs.
Wherein, throttle opening is determined by calibration. The specific calibration mode is that the target air inflow is calculated according to the target excess air coefficient and the pressure of the current air inlet pipe. The current throttle valve demand value is determined by the existing model of the throttle opening and the air inflow, and the stability of the throttle valve control is adjusted by PID adjustment. And outputting the maximum opening of the throttle valve when the throttle valve opening corresponding to the requirement of the air inflow is larger than the upper limit of the throttle valve opening threshold value. For the adjustment of the valve opening, which belongs to the prior art, the flow chart of the valve opening can be referred to fig. 3, and no further discussion is made. And in this context, all the throttle opening adjustments involved are realized in this way.
2) During the switch from condition 2 to condition 3 as shown in FIG. 2, the throttle is preferentially adjusted. When the throttle valve is fully opened, the target excess air coefficient is still not met, the electronic supercharger is started to assist through the ECU command, the theoretical air demand (namely, the target air inflow) and the actual air amount are calculated according to the target excess air coefficient and the actual excess air coefficient, and the required air amount to be compensated is determined. In the present embodiment, the calculation method of the actual air amount is identical to the calculation method of the target intake air amount described above, which is the conventional art. And (5) looking up the relation between the rotating speed of the electronic supercharger and the air inflow according to the air quantity to be compensated, and determining the rotating speed of the electronic supercharger. And finally, the ECU sends a target rotating speed to the electronic supercharger through CAN communication, and the rotating speed of the electronic supercharger is controlled to be operated to the target rotating speed through PID closed loop control, so that the actual excess air coefficient is equal to the target excess air coefficient.
However, it is inevitable that with the increase in the rotational speed of the hydrogen-burning engine, there may be a case where the actual excess air ratio is larger than the target excess air ratio due to the fixed rotational speed of the electronic supercharger. When the actual excess air coefficient is larger than the set coefficient upper limit, the rotating speed of the electronic supercharger is reduced by the set rotating speed step distance, so that when the hydrogen-burning engine is switched from the working condition 2 to the working condition 3, the actual excess air coefficient is in an ideal state, even if the actual excess air coefficient is equal to the target excess air coefficient or is positioned in a smaller deviation range of the target excess air coefficient, and the NOx emission is prevented from being inconsistent due to overlarge deviation of the actual excess air coefficient and the target excess air coefficient.
3) When operating mode 3 is switched to operating mode 4, the throttle valve is held fully open. Since there is a hysteresis in the supercharger at the initial stage of the acceleration process, it is necessary to adjust the intake air amount by the electronic supercharging until the target excess air ratio is satisfied. If the rotation speed of the electronic pressurization reaches the upper limit rotation speed and still does not reach the target excess air coefficient, the actual excess air coefficient is ensured to be in an ideal state in the acceleration process by limiting the injection pulse width of the hydrogen so as to ensure lower NOx emission. Similarly, when the actual excess air ratio is greater than the upper limit, the rotational speed of the electronic supercharger is gradually decreased.
4) In some scenes, when the actual excess air ratio of the working condition 4a cannot be adjusted to an ideal state, under the condition of meeting the power requirement, the engine speed is increased, the load factor is reduced, and the hydrogen-burning engine enters the working condition 4b, so that the excess air ratio can be effectively increased, and ultra-low NOx emission is realized.
5) Under the actual power demand working condition, the steady-state operation of the hydrogen-burning engine is ensured through the matching of mechanical pressurization, so that the actual excess air coefficient is in an ideal state, and the ultralow NOx emission is realized. And in either operating condition 4a or 4b, electronic boost assist will not be enabled.
As shown in fig. 4, the control device of the range extender hydrogen-burning engine of the present invention for realizing the control method specifically comprises an air filter 1, a check valve 2, an electronic supercharger 4, a compressor 6, a supercharger 7, an intercooler 8, a throttle valve 9, an intake air temperature and pressure sensor 13, an exhaust pipe 10, a wide-area oxygen sensor 11, a NOx sensor 11 and H 2 A concentration sensor 12. The air filter 1, the one-way valve 2, the air compressor 6, the intercooler 8, the throttle valve 9 and the air inlet temperature and pressure sensors 13 are all arranged on the air inlet pipe 5, the bypass pipe 3 is arranged on the air inlet pipe 5 at two ends of the one-way valve 2, and the electronic supercharger 4 is arranged in the bypass pipe 3. The supercharger 7 and the wide-area oxygen sensor 11 are mounted on the exhaust pipe 10, and the supercharger 7 is communicated with the compressor 6. Electronic supercharger 4, compressor 6, supercharger 7, throttle 9, intake air temperature and pressure sensor 13, wide-range oxygen sensor11、H 2 The concentration sensors 12 are each electrically connected to the ECU.
The electronic supercharger 4 is connected with the one-way valve 2 in parallel through a pipeline, and the function of the electronic supercharger is that when the mechanical supercharger 7 is not started yet, the electronic supercharger 4 can effectively prevent high-pressure gas from flowing backwards into the air filter 1 during working. When the mechanical booster 7 works, air enters the mechanical booster zone through the air inlet of the electronic booster 4 to form a negative pressure area, and enters the hydrogen-burning engine after being secondarily boosted in the mechanical booster zone, so that the air inflow is improved.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (10)
1. A control method of a range extender hydrogen-burning engine is characterized in that when a power requirement is made on the hydrogen-burning engine, the hydrogen-burning engine is started in a cold mode, and the rotating speed of the hydrogen-burning engine reaches a set ignition rotating speed; then, the hydrogen-burning engine is started up to run in an idle working condition, and the rotating speed of the hydrogen-burning engine is increased to a set target rotating speed; when the actual demand power is provided for the hydrogen-burning engine, the hydrogen-burning engine is operated under the actual demand power working condition until the whole vehicle sends out an instruction for stopping operation, and then the hydrogen-burning engine is stopped;
when the hydrogen-burning engine enters an idle working condition, the actual excess air coefficient of an air inlet system of the hydrogen-burning engine is adjusted to be a set target excess air coefficient; when the rotating speed of the hydrogen-burning engine is increased from the rotating speed under the idle working condition to the target rotating speed, the target excess air coefficient is taken as a target value, and the actual excess air coefficient is regulated by combining a throttle valve in the air inlet system and an added electronic supercharger; when the hydrogen-burning engine is switched from the working condition working at the target rotating speed to the actual power requirement working condition, the target excess air coefficient is taken as a target value, and the actual excess air coefficient is regulated by combining the electronic booster and the injection pulse width of the fuel.
2. The control method of the range extender hydrogen-burning engine according to claim 1, wherein the cold start is specifically implemented by dragging the hydrogen-burning engine through a motor of a hybrid system to make the rotation speed reach the ignition rotation speed.
3. The control method of a range extender hydrogen engine according to claim 2, wherein the ignition speed is 500r/min or more.
4. The control method of a range extender hydrogen engine according to claim 1, wherein after the hydrogen engine enters an idle condition, the hydrogen engine is operated for a set time to ensure that an actual excess air ratio of the hydrogen engine in the idle condition is maintained at a target excess air ratio.
5. The method of claim 4, wherein the actual excess air ratio of the hydrogen engine intake system is adjusted under the idle condition,
acquiring an actual excess air coefficient of an air inlet system under an idle working condition, and comparing the actual excess air coefficient with a target excess air coefficient; if the actual excess air coefficient is smaller than the target excess air coefficient, adjusting the opening of a throttle valve to increase the air inflow of an air inlet system so that the actual excess air coefficient is the target excess air coefficient; and if the actual excess air ratio is larger than the target excess air ratio upper limit, adjusting the opening of a throttle valve to reduce the air inflow of the air inlet system, so that the actual excess air ratio is the target excess air ratio.
6. The control method of a range extender hydrogen engine according to claim 1, wherein the specific adjustment mode for adjusting the actual excess air ratio in combination with the throttle valve in the intake system and the added electronic supercharger is,
acquiring an actual excess air coefficient of an air inlet system when the rotating speed of the hydrogen-burning engine is increased from the rotating speed under the idle working condition to the target rotating speed, and adjusting the opening of a throttle valve according to the actual excess air coefficient and the target excess air coefficient;
if the opening of the throttle valve is in a fully opened state, respectively acquiring a theoretical air demand and an actual air quantity according to the target excess air coefficient and the actual excess air coefficient, and determining a required air quantity to be compensated according to a difference value between the theoretical air demand and the actual air quantity; and determining the target rotating speed of the electronic supercharger according to the air quantity to be compensated, and enabling the rotating speed of the electronic supercharger to be operated to the target rotating speed.
7. The control method of a range extender hydrogen engine according to claim 6, wherein if the actual excess air ratio is greater than a set upper coefficient limit during the increase of the rotational speed of the hydrogen engine, the rotational speed of the electronic supercharger is decreased at a set rotational speed step.
8. The control method of a range extender hydrogen engine according to claim 1, wherein the specific adjustment mode for adjusting the actual excess air ratio in combination with the injection pulse width of the fuel and the electronic booster is,
the opening degree of the throttle valve is in a full-open state; increasing the rotating speed of the electronic supercharger until the actual excess air coefficient acquired when the hydrogen-burning engine is switched from the working condition of the target rotating speed to the actual power demand working condition is the target excess air coefficient;
and if the rotating speed of the electronic supercharger is at the upper limit and the actual excess air coefficient is smaller than the target excess air coefficient, limiting the injection pulse width of the hydrogen fuel.
9. The control method of a range extender hydrogen engine according to claim 1, wherein after the hydrogen engine enters an actual power demand condition, an excess air ratio in an air intake system is adjusted by a supercharger to be a target excess air ratio.
10. A control device for a range extender hydrogen engine for implementing the control method according to any one of claims 1-9, characterized by comprising an air filter (1), a one-way valve (2), an electronic supercharger (4), a compressor (6), a supercharger (7), an intercooler (8), a throttle valve (9), an intake air temperature and pressure sensor (13), a wide-area oxygen sensor (11); the air filter (1), the one-way valve (2), the air compressor (6), the intercooler (8), the throttle valve (9) and the air inlet temperature and pressure sensors (13) are all arranged on the air inlet pipe (5), a bypass pipe (3) is arranged on the air inlet pipe (5) at two ends of the one-way valve (2), and the electronic supercharger (4) is arranged in the bypass pipe (3); the mechanical booster (7) and the wide-range oxygen sensor (11) are arranged on the exhaust pipe (10), and the mechanical booster (7) is communicated with the air compressor (6); the electronic supercharger (4), the air compressor (6), the mechanical supercharger (7), the throttle valve (9), the air inlet temperature and pressure sensor (13) and the wide-range oxygen sensor (11) are electrically connected with the ECU.
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| CN202311848458.8A CN117703615A (en) | 2023-12-29 | 2023-12-29 | Control method and device for range extender hydrogen-burning engine |
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| CN202311848458.8A CN117703615A (en) | 2023-12-29 | 2023-12-29 | Control method and device for range extender hydrogen-burning engine |
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