CN110131034B - Engine turbocharger overspeed diagnosis method and system and vehicle - Google Patents
Engine turbocharger overspeed diagnosis method and system and vehicle Download PDFInfo
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- CN110131034B CN110131034B CN201810105149.4A CN201810105149A CN110131034B CN 110131034 B CN110131034 B CN 110131034B CN 201810105149 A CN201810105149 A CN 201810105149A CN 110131034 B CN110131034 B CN 110131034B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
- F02B2039/162—Control of pump parameters to improve safety thereof
- F02B2039/168—Control of pump parameters to improve safety thereof the rotational speed of pump or exhaust drive being limited
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Abstract
The invention relates to an engine turbocharger overspeed diagnosis method and system and a vehicle. The engine turbocharger overspeed diagnosis method comprises the following steps: setting a first threshold value and a second threshold value; acquiring operating parameters of an engine; respectively correcting the obtained supercharging pressure and the obtained engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow to obtain the predicted rotating speed of the turbocharger; inquiring a position map of a release valve actuator of the turbocharger according to the engine speed and the opening degree of the throttle valve to obtain the predicted opening degree of the release valve and calculating the difference value between the predicted opening degree and the obtained opening degree of the release valve of the turbocharger; and if the predicted rotating speed exceeds the first threshold value or the difference value exceeds the second threshold value, determining that the turbocharger has overspeed, and if the predicted rotating speed does not exceed the first threshold value and the difference value does not exceed the second threshold value, determining that the turbocharger has not overspeed.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an engine turbocharger overspeed diagnosis method, an engine turbocharger overspeed diagnosis system and a vehicle.
Background
At present, on the gasoline engine for the vehicle, the turbocharging technology has become one of the important technical means for meeting the future fuel consumption regulation. The turbocharger is a core part of a supercharged engine, often works under the conditions of high temperature, high load and high rotating speed, the limit rotating speed is as high as more than 20 ten thousand revolutions, and the vehicular turbocharger has a vent valve structure to avoid over-supercharging or supercharger overspeed, the supercharger overspeed is greatly damaged, not only can cause damage and failure of a supercharger impeller shaft system, but also can cause fragments and engine oil to enter a cylinder to damage the whole engine under serious conditions.
Although there are already mature turbocharger rotational speed measuring devices, there is a problem of high cost. At present, in the development stage of an engine, almost no supercharger rotating speed sensor is installed on an actual vehicle, a turbocharger is controlled by adopting a model and a calibration means, and the conventional overspeed diagnosis technology is mainly used for indirectly calculating the rotating speed of the turbocharger according to real-time monitoring data of an engine control system on air flow and supercharging pressure and then indirectly calculating the working load of the turbocharger.
However, the above diagnostic method has the problems of insufficient reliability and the like, and the phenomenon that the supercharger is overspeed and fails, or even the whole engine is destroyed often occurs in actual development or after sale. This is because neither the boost pressure nor the air flow is directly measured from the working load condition of the supercharger, and because the engine system is complicated, if abnormal conditions such as air intake blockage or air leakage in the boost pipe occur, the supercharger may be operated at an excessive speed, but at this time, the supercharger speed calculated based on the boost pressure and the air flow may still be in a normal range, which causes calculation and diagnosis distortion, and thus, serious problems such as continuous excessive speed damage of the supercharger, even damage to the engine, and the like may occur due to misjudgment. Therefore, there is a need for research and improvement in view of the existing shortcomings including the above-mentioned situation.
Disclosure of Invention
In view of the above, the present invention provides an engine turbocharger overspeed diagnosis method, an engine turbocharger overspeed diagnosis system, and a vehicle, which effectively solve the above-mentioned problems and other problems in the prior art.
First, according to a first aspect of the present invention, there is provided an engine turbocharger overspeed diagnosis method including the steps of:
setting a first threshold value and a second threshold value, wherein the first threshold value is the highest speed limit of the turbocharger, and the second threshold value is the maximum allowable deviation of the opening degree of a deflation valve of the turbocharger;
acquiring operation parameters of the engine, wherein the operation parameters comprise supercharging pressure, engine air flow, engine rotating speed, throttle opening and air bleeding valve opening of a turbocharger;
respectively correcting the obtained supercharging pressure and the obtained engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow to obtain the predicted rotating speed of the supercharger;
inquiring a position map of a release valve actuator of the turbocharger according to the engine speed and the throttle opening to obtain a predicted opening of a release valve and calculating a difference value between the predicted opening and the acquired opening of the release valve of the turbocharger; and
determining that overspeed of the turbocharger has occurred if the predicted speed exceeds the first threshold or the difference exceeds the second threshold, and determining that overspeed of the turbocharger has not occurred if the predicted speed does not exceed the first threshold and the difference does not exceed the second threshold.
In the engine turbocharger overspeed diagnosis method according to the present invention, optionally, the turbocharger compressor performance map is obtained by performing a turbocharger gas performance bench test, and/or the turbocharger bleed valve actuator position map is obtained by performing an engine performance bench test.
In the engine turbocharger overspeed diagnosis method according to the present invention, optionally, the second threshold value is determined based on a manufacturing variation of the purge valve actuator and a deviation caused by aged wear within a life cycle of the purge valve actuator.
In the engine turbocharger overspeed diagnosis method according to the present invention, optionally, both the first threshold value and the second threshold value are calibrated in an engine control module.
Secondly, according to a second aspect of the present invention, there is provided an engine turbocharger overspeed diagnostic system comprising:
the engine control module is internally calibrated with a first threshold value and a second threshold value, wherein the first threshold value is the highest speed limit of the turbocharger, and the second threshold value is the maximum allowable deviation of the opening degree of a deflation valve of the turbocharger;
an operating parameter measuring device configured to measure an operating parameter of the engine, the operating parameter including a boost pressure, an engine air flow rate, an engine speed, a throttle opening, a bleed valve opening of the turbocharger; and
a supercharger overspeed diagnostic module configured to perform the steps of:
respectively correcting the obtained supercharging pressure and the obtained engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow to obtain the predicted rotating speed of the supercharger;
inquiring a position map of a release valve actuator of the turbocharger according to the engine speed and the throttle opening to obtain a predicted opening of a release valve and calculating a difference value between the predicted opening and the acquired opening of the release valve of the turbocharger; and
determining that overspeed of the turbocharger has occurred if the predicted speed exceeds the first threshold or the difference exceeds the second threshold, and determining that overspeed of the turbocharger has not occurred if the predicted speed does not exceed the first threshold and the difference does not exceed the second threshold.
In the engine turbocharger overspeed diagnosis system according to the present invention, optionally, the operation parameter measuring means includes at least:
a pressure sensor for measuring a boost pressure;
an air flow sensor for measuring engine air flow;
an engine speed sensor for measuring an engine speed;
a throttle position sensor for measuring a throttle opening degree; and
and a purge valve opening sensor for measuring a purge valve opening of the turbocharger.
In the engine turbocharger overspeed diagnosis system according to the present invention, optionally, the engine turbocharger overspeed diagnosis system further includes an atmospheric pressure sensor for measuring atmospheric pressure and an atmospheric temperature sensor for measuring atmospheric temperature.
In the engine turbocharger overspeed diagnosis system according to the present invention, optionally, the turbocharger compressor performance map is obtained by performing a turbocharger gas performance bench test, and/or the turbocharger bleed valve actuator position map is obtained by performing an engine performance bench test.
In the engine turbocharger overspeed diagnosis system according to the present invention, optionally, the second threshold value is determined based on a manufacturing variation of the purge valve actuator and a deviation caused by aged wear within a life cycle of the purge valve actuator.
Further, according to a third aspect of the present invention, there is also provided a vehicle on which the engine turbocharger overspeed diagnosis method according to any one of the above is used, or which is equipped with the engine turbocharger overspeed diagnosis system according to any one of the above.
Compared with the prior art, the engine turbocharger overspeed diagnosis method and the diagnosis system can judge the working state of the supercharger very timely, accurately and reliably, so that the engine control system can judge and determine the abnormal condition of the supercharger at the first time, and corresponding protection measures are quickly adopted to avoid equipment damage or reduce the equipment damage degree, and the maintenance cost is reduced.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic flow diagram of an embodiment of a method for engine turbocharger overspeed diagnosis according to the present invention.
FIG. 2 is a graphical illustration of turbocharger compressor performance pulse spectra in the embodiment of the engine turbocharger overspeed diagnostic method shown in FIG. 1.
FIG. 3 is a pulse spectrum diagram of an opening degree of a turbocharger bleed valve in the embodiment of the engine turbocharger overspeed diagnosis method shown in FIG. 1.
FIG. 4 is a schematic block diagram of an embodiment of an engine turbocharger overspeed diagnostic system according to the present invention.
Detailed Description
First, it should be noted that the engine turbocharger overspeed diagnosis method, the engine turbocharger overspeed diagnosis system, and the specific steps, compositions, features, advantages, etc. of the vehicle of the present invention will be specifically described below by way of example, however, all the descriptions are for illustrative purposes only and should not be construed as forming any limitation on the present invention.
Referring now to fig. 1-3, the basic flow of steps of an engine turbocharger overspeed diagnostic method according to the present invention is generally shown in schematic form only and will be described in detail.
In the above embodiment, the engine turbocharger overspeed diagnosis method includes the steps of:
first, in the overspeed diagnosis method, two threshold values need to be set as a criterion for determining whether or not the engine turbocharger is overspeed, that is, the maximum speed limit of the turbocharger may be set as the first threshold value, and the maximum allowable deviation of the opening degree of the bleed valve of the turbocharger may be set as the second threshold value.
By way of example, the second threshold value may be determined based on manufacturing variations of a turbocharger bleed valve actuator and deviations caused by aging wear within the life cycle of the bleed valve actuator, thereby ensuring accuracy in testing the method of the present invention for engine turbocharger overspeed diagnostics. It should be noted that the specific values of the above first threshold and the second threshold can be selectively set according to the actual application, and they can be calibrated in the engine control module.
Furthermore, in the overspeed diagnosis method, it is necessary to acquire operating parameters of the engine, which may include boost pressure, engine air flow, engine speed, throttle opening, and air bleed valve opening of the turbocharger, so that it can be determined whether the turbocharger is overspeed based on the acquired operating parameters.
Specifically, as shown in fig. 1, the supercharging pressure and the engine air flow in the acquired engine operating parameters may be corrected to a supercharging pressure ratio and a compressor flow under standard atmospheric pressure and temperature conditions, respectively, and then the corrected supercharging pressure ratio and the corrected compressor flow may be used to query a compressor performance map of the turbocharger, so as to obtain the predicted rotation speed of the supercharger. By comparing the predicted rotation speed with the first threshold value, if the former exceeds the latter, it is determined that the overspeed phenomenon of the turbocharger is occurring at this time.
For the turbocharger compressor performance map, the turbocharger compressor performance map can be obtained by performing a turbocharger gas performance bench test. For example, a schematic diagram of the performance pulse spectrum of a turbocharger compressor obtained by the above test is shown in fig. 2, which contains a plurality of equal speed lines, wherein the compressor speed is a function of the compressor flow and the pressure ratio, and the compressor speed can be estimated by interpolation according to the compressor flow and the pressure ratio. As shown in fig. 2, as the compressor flow and the pressure ratio increase, the supercharger speed will also increase, so the upper right hand region in fig. 2 is the potential turbocharger overspeed region.
Further, as shown in fig. 1, a map of the position of a purge valve actuator of the turbocharger may be queried based on the engine speed and the throttle opening degree in the acquired engine operating parameters to obtain a predicted opening degree of the purge valve, and then a difference between the predicted opening degree and the acquired purge valve opening degree of the turbocharger (i.e., the detected actual opening degree of the purge valve) may be calculated. By comparing the difference with both of the above-described second thresholds, if the former has exceeded the latter, it can be determined that the overspeed phenomenon has occurred at this time in the turbocharger.
This can be obtained by performing an engine performance bench test on the above-described map of the position of the purge valve actuator of the turbocharger. For example, a pulse spectrum diagram of the position of a turbocharger bleed valve actuator (which may be embodied as an electric bleed valve actuator) is shown in fig. 3, from which it can be seen that the turbocharger bleed valve opening is not the same in different operating regions. For example, in a small load region, the purge valve opening is 100% fully open; in a low-speed and large-load area, the opening degree of the air release valve is minimum, and the air release valve is fully closed or close to fully closed; in a high-speed and high-load region, the opening degree of the purge valve is gradually increased. According to the engine speed and the load condition, the opening value of the air release valve can be calculated through interpolation according to the figure 3.
In addition, if the above-mentioned predicted rotation speed does not exceed the first threshold value and the difference between the above-mentioned predicted opening degree and the acquired opening degree of the purge valve of the turbocharger does not exceed the second threshold value, it can be determined that the turbocharger is not overspeed at this time. Therefore, the method can relatively quickly and accurately determine the actual working state of the turbocharger, and can judge whether the overspeed phenomenon occurs in the turbocharger in the first time, so that equipment is protected in time to avoid damage or reduce the damage degree of the equipment.
As one aspect of the present invention that is significantly superior to the prior art, an engine turbocharger overspeed diagnostic system is also provided. By way of example, the engine turbocharger overspeed diagnostic system of the present invention includes an engine control module 1, an operating parameter measurement device 2, and a supercharger overspeed diagnostic module 3.
In this case, the engine control module 1 has a first threshold value and a second threshold value calibrated in its interior. As described above, these two thresholds are used as the basis for determining whether the engine turbocharger is overspeed, the first threshold is preset as the highest speed limit of the turbocharger, and the second threshold is preset as the maximum allowable deviation of the opening degree of the bleed valve of the turbocharger. Since the first threshold and the second threshold have been specifically described in the foregoing, the corresponding contents in the foregoing may be referred to and are not described again.
The operating parameter measuring device 2 is configured to measure operating parameters of the engine, including boost pressure, engine air flow, engine speed, throttle opening, and air bleed valve opening of the turbocharger. For example, the operating parameter measuring device 2 may include, but is not limited to, a pressure sensor 21 for measuring a boost pressure, an air flow sensor 22 for measuring an engine air flow, an engine speed sensor 23 for measuring an engine speed, a throttle position sensor 24 for measuring a throttle opening, a bleed valve opening sensor 25 for measuring a turbocharger bleed valve opening.
The supercharger overspeed diagnostic module 3 is an important component of the engine turbocharger overspeed diagnostic system and is configured to perform the following steps:
firstly, respectively correcting the obtained supercharging pressure and the engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then obtaining the predicted rotating speed of the supercharger by inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow. In an alternative case, the standard atmospheric pressure and temperature described above may be obtained by directly providing an atmospheric pressure sensor and an atmospheric temperature sensor in the present engine turbocharger overspeed diagnosis system, respectively. Of course, it is also permissible in the system of the present invention to obtain the above standard atmospheric pressure and temperature data from other devices, means, or apparatuses.
Further, a predicted opening degree of the purge valve is obtained by referring to a purge valve actuator position map of the turbocharger in accordance with the engine speed, the throttle opening degree, and then a difference between the predicted opening degree and the obtained purge valve opening degree of the turbocharger (i.e., the detected actual opening degree of the purge valve) is calculated.
Based on the comparison of the data obtained above with the first threshold value and the second threshold value calibrated in the engine control module 1, if the above-mentioned predicted rotation speed exceeds the first threshold value or the above-mentioned difference between the predicted opening degree and the obtained air bleeding valve opening degree of the turbocharger exceeds the second threshold value, it can be determined that the turbocharger has overspeed. In contrast, if the predicted rotational speed does not exceed the first threshold value and the difference does not exceed the second threshold value, it is determined that the turbocharger is not overspeed.
It will be appreciated that, since the technical contents of the compressor performance map of the turbocharger, the position map of the bleed valve actuator of the turbocharger and the like have been described in detail in the foregoing, reference may be made to the detailed description of the corresponding parts mentioned above directly, and the description will not be repeated here.
In view of the technical advantages of the engine turbocharger overspeed diagnosis method and system provided by the invention, which are obviously superior to the prior art, the method and system are very suitable for being applied to a vehicle or the system provided by the invention is arranged on the vehicle, so that the defects and shortcomings in the prior art can be effectively overcome, the reliability of the engine turbocharger overspeed diagnosis is obviously improved, the abnormal overspeed condition of the turbocharger can be judged in the first time, and the equipment can be prevented from being damaged or the damage degree of the equipment can be reduced by adopting corresponding protection measures in time, and the maintenance cost is reduced.
The engine turbocharger overspeed diagnosis method, the engine turbocharger overspeed diagnosis system, and the vehicle of the present invention have been explained in detail above by way of examples only, which are provided only for illustrating the principles of the present invention and the embodiments thereof, and not for limiting the present invention, and those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present invention. For example, although it is exemplified herein that the turbocharger compressor performance map and/or the turbocharger bleed valve actuator position map may be obtained by using bench tests, it may in fact be obtained directly from, for example, an automobile manufacturer, a technical developer, or other development organization. Accordingly, all equivalents are intended to be included within the scope of this invention and defined in the claims which follow.
Claims (10)
1. An engine turbocharger overspeed diagnostic method characterized by comprising the steps of:
setting a first threshold value and a second threshold value, wherein the first threshold value is the highest speed limit of the turbocharger, and the second threshold value is the maximum allowable deviation of the opening degree of a deflation valve of the turbocharger;
acquiring operation parameters of the engine, wherein the operation parameters comprise supercharging pressure, engine air flow, engine rotating speed, throttle opening and air bleeding valve opening of a turbocharger;
respectively correcting the obtained supercharging pressure and the obtained engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow to obtain the predicted rotating speed of the supercharger;
inquiring a position map of a release valve actuator of the turbocharger according to the engine speed and the throttle opening to obtain a predicted opening of a release valve and calculating a difference value between the predicted opening and the acquired opening of the release valve of the turbocharger; and
determining that overspeed of the turbocharger has occurred if the predicted speed exceeds the first threshold or the difference exceeds the second threshold, and determining that overspeed of the turbocharger has not occurred if the predicted speed does not exceed the first threshold and the difference does not exceed the second threshold.
2. The engine turbocharger overspeed diagnostic method of claim 1, wherein said turbocharger compressor performance map is obtained by performing a turbocharger gas performance bench test, and/or said turbocharger bleed valve actuator position map is obtained by performing an engine performance bench test.
3. The engine turbocharger overspeed diagnostic method of claim 1, wherein said second threshold is determined as a function of manufacturing variation of said bleed valve actuator and deviations resulting from aging wear over a life cycle of said bleed valve actuator.
4. The engine turbocharger overspeed diagnostic method of claim 1, wherein said first threshold and said second threshold are both calibrated in an engine control module.
5. An engine turbocharger overspeed diagnostic system, characterized in that said engine turbocharger overspeed diagnostic system comprises:
the engine control module is internally calibrated with a first threshold value and a second threshold value, wherein the first threshold value is the highest speed limit of the turbocharger, and the second threshold value is the maximum allowable deviation of the opening degree of a deflation valve of the turbocharger;
an operating parameter measuring device configured to measure an operating parameter of the engine, the operating parameter including a boost pressure, an engine air flow rate, an engine speed, a throttle opening, a bleed valve opening of the turbocharger; and
a supercharger overspeed diagnostic module configured to perform the steps of:
respectively correcting the obtained supercharging pressure and the obtained engine air flow into a supercharging pressure ratio and an air compressor flow under the conditions of standard atmospheric pressure and temperature, and then inquiring a performance map of the air compressor of the turbocharger according to the corrected supercharging pressure ratio and the air compressor flow to obtain the predicted rotating speed of the supercharger;
inquiring a position map of a release valve actuator of the turbocharger according to the engine speed and the throttle opening to obtain a predicted opening of a release valve and calculating a difference value between the predicted opening and the acquired opening of the release valve of the turbocharger; and
determining that overspeed of the turbocharger has occurred if the predicted speed exceeds the first threshold or the difference exceeds the second threshold, and determining that overspeed of the turbocharger has not occurred if the predicted speed does not exceed the first threshold and the difference does not exceed the second threshold.
6. The engine turbocharger overspeed diagnostic system of claim 5 wherein said operating parameter measuring means comprises at least:
a pressure sensor for measuring a boost pressure;
an air flow sensor for measuring engine air flow;
an engine speed sensor for measuring an engine speed;
a throttle position sensor for measuring a throttle opening degree; and
and a purge valve opening sensor for measuring a purge valve opening of the turbocharger.
7. The engine turbocharger overspeed diagnostic system of claim 5, wherein said engine turbocharger overspeed diagnostic system further comprises an atmospheric pressure sensor for measuring atmospheric pressure and an atmospheric temperature sensor for measuring atmospheric temperature.
8. The engine turbocharger overspeed diagnostic system of claim 5, wherein said turbocharger compressor performance map is obtained by performing a supercharger gas performance bench test, and/or said turbocharger bleed valve actuator position map is obtained by performing an engine performance bench test.
9. The engine turbocharger overspeed diagnostic system of any one of claims 5 to 8, wherein said second threshold is determined as a function of manufacturing variation of said bleed valve actuator and deviations resulting from aged wear over a life cycle of said bleed valve actuator.
10. A vehicle on which an engine turbocharger overspeed diagnosis method according to any one of claims 1 to 4 is used, or which is equipped with an engine turbocharger overspeed diagnosis system according to any one of claims 5 to 9.
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| CN110925106B (en) * | 2019-12-11 | 2023-03-21 | 潍柴动力股份有限公司 | Control method and device of throttle valve of engine, electronic equipment and engine |
| CN111997766B (en) * | 2020-09-02 | 2022-11-04 | 宁波市鄞州德来特技术有限公司 | Control method applied to automobile controller |
| CN112648086A (en) * | 2020-12-03 | 2021-04-13 | 潍柴动力股份有限公司 | Instantaneous overspeed protection method and system for engine supercharger |
| FR3118647A1 (en) * | 2021-01-07 | 2022-07-08 | Renault S.A.S | Method for detecting a gas leak in an intake circuit of a motorization device |
| CN113266460B (en) * | 2021-06-08 | 2022-06-07 | 湖南道依茨动力有限公司 | Abnormality monitoring method, control device, turbocharger, and engine system |
| CN113310536B (en) * | 2021-07-29 | 2022-01-07 | 中国航发上海商用航空发动机制造有限责任公司 | Method for measuring inlet flow of compressor in engine whole machine test |
| CN113482764B (en) * | 2021-07-30 | 2022-05-20 | 广西玉柴机器股份有限公司 | Method for diagnosing boost pressure fault of controllable supercharger |
| CN114046207B (en) * | 2021-09-29 | 2023-11-14 | 广西玉柴机器股份有限公司 | Control method and device for controllable supercharger of internal combustion engine |
| CN114810400B (en) * | 2022-05-10 | 2023-04-18 | 潍柴动力股份有限公司 | Fuel injection quantity control method, device and system |
| CN115405410B (en) * | 2022-08-11 | 2024-04-16 | 长城汽车股份有限公司 | Supercharger control method, supercharger control device, vehicle and storage medium |
| CN115711172B (en) * | 2022-11-30 | 2024-06-04 | 东风汽车股份有限公司 | Pressure control method of supercharger |
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| DE102008044156A1 (en) * | 2008-11-28 | 2010-06-10 | Ford Global Technologies, LLC, Dearborn | Supercharging-pressure control method for motor vehicle, involves detecting reference value for rotational speed of turbocharger shaft, and controlling rotational speed based on detected reference value |
| JP5853403B2 (en) * | 2011-04-25 | 2016-02-09 | 日産自動車株式会社 | Control device for internal combustion engine |
| JP6015724B2 (en) * | 2014-09-02 | 2016-10-26 | トヨタ自動車株式会社 | Internal combustion engine system |
| CN105673543B (en) * | 2015-12-31 | 2017-09-12 | 联合汽车电子有限公司 | It is a kind of to prevent the control method of turbo-charger surge |
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