CN111005828B - Gas consumption detection method and device - Google Patents
Gas consumption detection method and device Download PDFInfo
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- CN111005828B CN111005828B CN201911380395.1A CN201911380395A CN111005828B CN 111005828 B CN111005828 B CN 111005828B CN 201911380395 A CN201911380395 A CN 201911380395A CN 111005828 B CN111005828 B CN 111005828B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
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Abstract
The invention provides a method and a device for detecting gas consumption, which are applied to the technical field of engines, the method accumulates the total gas consumption and the total gas injection of a gas supply system to obtain the total gas consumption under the idle mode of a current booster pump and the total gas injection under the idle mode of the current booster pump, calculating the difference value between the total gas consumption of the current booster pump in the idle mode and the total gas injection of the current booster pump in the idle mode under the condition that the total gas injection of the current booster pump in the idle mode is greater than a first preset threshold value, in the case of normal gas consumption, the obtained difference should be zero or a small value, and therefore, if the obtained difference is not within the first preset range, it can be determined that the gas consumption of the gas supply system is abnormal, and further, the detection of gas consumption of the gas supply system is realized, and the operation safety of the HPDI engine is improved.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to a method and a device for detecting gas consumption.
Background
The High Pressure Direct Injection (HPDI) engine is a High-power in-cylinder High Pressure Direct Injection compression ignition type natural gas engine, natural gas is used as a main fuel in the engine, an oxidation type catalyst is adopted, 5% of diesel oil is injected into a cylinder for ignition before a compression top dead center, 95% of natural gas is injected into flame at the Pressure of 300bar to be used as main fuel for combustion and work, therefore, the emission of particulate matters is reduced by 70%, CO2 is reduced by about 20%, and the national V emission standard is reached. Meanwhile, the power performance of the HPDI engine is identical to that of a diesel engine, and the power and the torque of the HPDI engine are improved by 20% compared with those of a spark plug ignition type gas engine.
The natural gas required by the HPDI engine is provided by the HPDI hydraulically driven air supply system, and in order to ensure the normal operation of the HPDI engine, the gas consumption state of the HPDI hydraulically driven air supply system needs to be detected. Therefore, how to detect whether the natural gas consumption of the HPDI hydraulically-driven gas supply system is abnormal is one of the technical problems to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a method and a device for detecting gas consumption, which realize detection of a gas consumption state of an HPDI hydraulically driven gas supply system according to a total gas consumption amount and a total gas injection amount of the gas supply system, and the specific scheme is as follows:
in a first aspect, the present invention provides a gas consumption detection method, including:
acquiring the gas consumption of a buffer tank in a gas supply system and the gas injection quantity of a gas injection mechanism in the idle mode of the current booster pump;
calculating the sum of the gas consumption and the total gas consumption of the buffer tank in the idle mode of the last booster pump to obtain the total gas consumption in the idle mode of the current booster pump;
calculating the sum of the fuel gas injection amount and the total fuel gas injection amount of the fuel gas injection mechanism in the last booster pump idle mode to obtain the total fuel gas injection amount in the current booster pump idle mode;
judging whether the total gas injection amount of the current booster pump in the idle mode is larger than a first preset threshold value or not;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not in a first preset range, it is determined that the gas consumption of the gas supply system is abnormal.
Optionally, if the total amount of gas injection under the current booster pump idle mode is greater than a first preset threshold, just the total amount of gas consumption under the current booster pump idle mode with the difference of the total amount of gas injection under the current booster pump idle mode is not in a first preset range, judge that gas supply system gas consumption is unusual, include:
if the total gas injection amount in the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of a first preset range, judging that the gas consumption of the gas supply system is too high;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not larger than the lower limit value of the first preset range, it is judged that the gas supply system has too low gas consumption.
Optionally, after determining that the gas consumption of the gas supply system is abnormal, the method further includes:
and setting a preset identifier to report the abnormal gas consumption information of the gas supply system.
Optionally, before the determining whether the total gas injection amount in the idle mode of the current booster pump is greater than a first preset threshold, the method further includes:
acquiring state information of the preset identification;
if the preset identifier is in a set state, judging whether the total gas injection amount in the idle mode of the current booster pump is greater than a second preset threshold value, wherein the second preset threshold value is greater than the first preset threshold value;
if the total gas injection amount in the idle mode of the current booster pump is larger than the second preset threshold value, and the difference between the total gas consumption amount in the idle mode of the current booster pump and the total gas injection amount in the idle mode of the current booster pump is within a second preset range, judging that the gas consumption of the gas supply system is recovered to be normal;
and if the preset identifier is in a reset state, executing the step of judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a first preset threshold value.
Optionally, after determining that the gas consumption of the gas supply system is recovered to normal, the method further includes:
and resetting the preset identification.
Optionally, obtaining the gas consumption of the buffer tank in the gas supply system in the idle mode of the current booster pump includes:
acquiring the residual gas quantity of a buffer tank in the gas supply system when the gas supply system enters the current booster pump idle mode to obtain a first residual gas quantity;
acquiring the residual gas quantity of the buffer tank when the gas supply system exits the current booster pump idle mode to obtain a second residual gas quantity;
and calculating the difference between the first residual gas quantity and the second residual gas quantity to obtain the gas consumption of the buffer tank.
Optionally, the gas consumption detecting method provided by the first aspect of the present invention further includes:
and after the gas consumption of the gas supply system is judged to be abnormal or the gas consumption of the gas supply system is judged to be recovered to be normal, the total gas consumption under the current booster pump idle mode and the total gas injection under the current booster pump idle mode are reset.
In a second aspect, the present invention provides a gas consumption detection device, including:
the acquiring unit is used for acquiring the gas consumption of a buffer tank in the gas supply system and the gas injection quantity of the gas injection mechanism in the idle mode of the current booster pump;
the first calculation unit is used for calculating the sum of the gas consumption and the total gas consumption of the buffer tank in the idle mode of the last booster pump to obtain the total gas consumption in the idle mode of the current booster pump;
the second calculation unit is used for calculating the sum of the fuel gas injection amount and the fuel gas injection total amount of the fuel gas injection mechanism in the last booster pump idle mode to obtain the fuel gas injection total amount in the current booster pump idle mode;
the first judgment unit is used for judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a first preset threshold value or not;
and the second judgment unit is used for judging that the gas consumption of the gas supply system is abnormal if the total gas injection amount of the current booster pump in the idle mode is greater than the first preset threshold value and the difference between the total gas consumption amount of the current booster pump in the idle mode and the total gas injection amount of the current booster pump in the idle mode is not within a first preset range.
Optionally, the second determining unit is configured to determine that the gas consumption of the gas supply system is abnormal when the gas consumption of the gas supply system is abnormal, and specifically includes:
if the total gas injection amount in the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of a first preset range, judging that the gas consumption of the gas supply system is too high;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not larger than the lower limit value of the first preset range, it is judged that the gas supply system has too low gas consumption.
Optionally, the gas consumption detecting device provided by the second aspect of the present invention further includes:
and the reporting unit is used for setting the preset identifier so as to report the abnormal gas consumption information of the gas supply system.
Based on the technical scheme, the gas consumption detection method provided by the invention accumulates the total gas consumption and total gas injection amount of the gas supply system to obtain the total gas consumption and total gas injection amount of the current booster pump in the idle mode, calculates the difference value between the total gas consumption and the total gas injection amount of the current booster pump in the idle mode under the condition that the total gas injection amount of the current booster pump in the idle mode is greater than a first preset threshold, and determines that the gas consumption of the gas supply system is abnormal if the difference is not within a first preset range, so that the detection of the gas consumption of the gas supply system is realized, and the operation safety of the HPDI engine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for detecting gas consumption according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for detecting gas consumption according to an embodiment of the present invention;
fig. 3 is a block diagram of a gas consumption detecting device according to an embodiment of the present invention;
fig. 4 is a block diagram of another gas consumption detecting device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a gas consumption detection method provided by an embodiment of the present invention, and the method is applicable to an onboard controller, which may be a controller of an HPDI engine, and obviously, the onboard controller may also be implemented by using other controllers with data processing capability provided on a vehicle; referring to fig. 1, a gas consumption detection method provided in an embodiment of the present invention may include:
s100, acquiring the gas consumption of a buffer tank in a gas supply system and the gas injection quantity of a gas injection mechanism in the idle mode of the current booster pump.
According to the structure and the working principle of the HPDI hydraulic drive air supply system, the vehicle-mounted controller judges whether air needs to be supplied from the hydraulic air storage tank to the buffer tank according to the gas quantity in the buffer tank in the air supply system, and further controls the working mode of the booster pump, so that when the vehicle-mounted controller judges that air does not need to be supplied to the buffer tank, the booster pump can be controlled to be in an idle mode.
The embodiment of the invention obtains the gas consumption of the buffer tank and the gas injection quantity of the gas injection mechanism in the gas supply system under the idle mode of the current booster pump, and detects the gas consumption state of the gas supply system based on the gas consumption.
Optionally, for the calculation of the gas consumption of the buffer tank in the idle mode of the current booster pump, when the booster pump is controlled to enter the idle mode, the remaining gas quantity of the buffer tank in the gas supply system is obtained to obtain a first remaining gas quantity when the gas supply system enters the idle mode of the current booster pump, and when the booster pump is controlled to exit the idle mode of the current booster pump, the remaining gas quantity of the buffer tank is obtained to obtain a second remaining gas quantity; and calculating the difference between the first residual gas quantity and the second residual gas quantity, wherein the obtained difference is the gas consumption of the buffer tank.
Correspondingly, for the calculation of the gas injection amount in the idle mode of the current booster pump, when the booster pump is controlled to enter the idle mode, a gas injection amount integrated value counted in the gas injection control system is obtained to obtain a first gas injection amount integrated value, when the booster pump is controlled to exit the idle mode, a gas injection amount integrated value updated after a plurality of times of gas injection in the gas injection control system is obtained to obtain a second gas injection amount integrated value, and a difference between the second gas injection amount integrated value and the first gas injection amount integrated value is the gas injection amount in the idle mode of the current booster pump.
It should be noted that, both the calculation of the gas consumption in the buffer tank and the calculation of the gas injection amount in the gas injection mechanism may be obtained by using a calculation method in the prior art, which is not limited in the embodiment of the present invention.
And S110, calculating the sum of the gas consumption and the total gas consumption of the buffer tank in the idle mode of the last booster pump to obtain the total gas consumption in the idle mode of the current booster pump.
After the gas consumption of the current booster pump in the idle mode is obtained, the sum of the gas consumption and the total gas consumption of the buffer tank in the previous booster pump in the idle mode is calculated to obtain the total gas consumption of the current booster pump in the idle mode, namely in the detection method provided by the embodiment of the invention, the gas consumption of the gas supply system in the idle mode of the booster pump for multiple times within a period of time is counted (after the preset condition is met, the counting result is cleared, and the subsequent content is detailed) to obtain the total gas consumption instead of adopting the gas consumption of the certain booster pump in the idle mode as a judgment parameter, so that the contingency of the counting data can be effectively avoided, and the probability of detection errors is reduced.
And S120, calculating the sum of the gas injection amount and the total gas injection amount of the gas injection mechanism in the idle mode of the last booster pump to obtain the total gas injection amount in the idle mode of the current booster pump.
Similar to the calculation method of the total gas consumption, after the gas injection amount of the current booster pump in the idle mode is obtained, the sum of the gas injection amount and the total gas injection amount of the gas injection mechanism in the previous booster pump in the idle mode is calculated, and the total gas injection amount of the current booster pump in the idle mode can be obtained.
It should be noted that steps S110 and S120 may be executed simultaneously, or S120 may be executed first, and then S110 is executed, and the execution sequence is changed, which does not affect the final detection result.
S130, judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a first preset threshold value or not, and if so, executing S140.
As described above, the detection method provided in the embodiment of the present invention is characterized in that the working state of the gas supply system is checked based on the idle mode of the booster pump for a plurality of times, and therefore, a first preset threshold related to the total gas injection amount is set, and only when the total gas injection amount is greater than the first preset threshold, the subsequent gas consumption detection step is executed.
It should be noted that, if the total gas injection amount in the current booster pump idle mode is not greater than the first preset threshold, the step corresponding to S100 is executed when the next booster pump idle mode is used, so as to realize continuous accumulation of the total gas consumption amount and the total gas injection amount until the determination condition defined in S130 is satisfied.
S140, judging whether the difference between the total gas consumption under the idle mode of the current booster pump and the total gas injection under the idle mode of the current booster pump is within a first preset range, if not, executing S150, and if so, executing S160.
Under the condition that the gas consumption of the gas supply system is normal, the total gas consumption and the total gas injection quantity should be equal or have a small difference, and correspondingly, the difference between the total gas consumption and the total gas injection quantity should be zero or have a small value (when the difference is a negative value, the absolute value of the difference is referred to), so that a first preset range can be set according to the premise, when the obtained difference is within the first preset range, the normal gas consumption of the gas supply system is indicated, and otherwise, the abnormal gas consumption is indicated.
And S150, judging that the gas consumption of the gas supply system is abnormal.
And under the condition that the difference between the total gas consumption of the current booster pump in the idle mode and the total gas injection amount of the current booster pump in the idle mode is not within a first preset range, judging that the gas consumption of the gas supply system is abnormal.
Specifically, the gas consumption abnormal type can be further divided, and if the difference between the total gas consumption in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of the first preset range, it is determined that the gas consumption of the gas supply system is too fast.
And if the difference between the total gas consumption of the current booster pump in the idle mode and the total gas injection of the current booster pump in the idle mode is not larger than the lower limit value of the first preset range, determining that the gas consumption of the gas supply system is too low.
And S160, clearing the total gas consumption under the current booster pump idle mode and the total gas injection under the current booster pump idle mode.
After the final detection conclusion is obtained, the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode can be cleared, so that the cumulative counting can be performed in the next booster pump idle mode.
Of course, after the execution of S150 is completed, S160 may also be executed, which is not described herein again.
In summary, the gas consumption detection method provided by the embodiment of the invention can realize detection of gas consumption of the gas supply system, and is beneficial to improving the operation safety of the HPDI engine.
Optionally, in the detection method provided by the embodiment of the present invention, a preset identifier may be further set, and the gas consumption state of the gas supply system is represented by the preset identifier. When the preset mark is set, the gas consumption is represented to be abnormal, and when the preset mark is reset, the gas consumption is represented to be normal. Of course, the state information of the gas supply system which is consumed too fast or too slow is further distinguished through the preset identification. And under the condition of judging that the gas consumption of the gas supply system is abnormal, setting a preset identifier to report the abnormal gas consumption information of the gas supply system.
Based on the above, referring to fig. 2, fig. 2 is another gas consumption detection method provided by an embodiment of the present invention, a fault cure determination step is added on the basis of the embodiment shown in fig. 1, and if a gas consumption abnormality exists in the gas supply system when a previous booster pump idle mode is passed, by the method provided by the embodiment of the present invention, it can also be determined whether the gas consumption of the gas supply system returns to normal or not on the basis of the above contents.
It should be noted that, in the following description, only the execution steps newly added with respect to the embodiment shown in fig. 1 are expanded, and the execution steps that are not described may be fully referred to the alternative execution manners given in the foregoing description, and are not specifically expanded here.
Specifically, before S130, S200 and S210 are added, wherein,
s200, state information of the preset identification is obtained.
As mentioned above, the state information of the preset identifier may be a set state, which represents that the gas supply system is abnormal in gas consumption, or a reset state, which represents that the gas supply system is normal in gas consumption. Optionally, the initial state of the preset flag may be set to a reset state.
S210, judging whether the preset identification is in a setting state, if so, executing S220, and if not, executing S130.
If the preset identifier is in the set state, it indicates that the gas consumption of the gas supply system is determined to be abnormal through the judgment of the idle mode of the previous booster pump, so that S130 is not required to be executed, and S220 is directly executed.
And S220, judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a second preset threshold value or not, and if so, executing S230.
Similar to the reason for setting the first preset threshold, in the embodiment of the present invention, a second preset threshold is set, and the second preset threshold is greater than the first preset threshold. And under the condition of presetting the identification setting, further judging whether the total gas injection amount in the current booster pump idle mode is larger than a second preset threshold value, if so, executing S230, and if not, counting the total gas injection amount and the total gas consumption amount again in the next booster pump idle mode.
And S230, judging whether the difference between the total gas consumption under the idle mode of the current booster pump and the total gas injection under the idle mode of the current booster pump is in a second preset range, and if so, executing S240.
If the gas consumption of the gas supply system returns to normal, the difference between the total gas consumption and the total gas injection amount should be zero, or the value is small (when the difference is a negative value, the absolute value of the difference is referred to), the embodiment of the present invention sets a second preset range, and if the difference between the total gas consumption in the idle mode of the current booster pump and the total gas injection amount in the idle mode of the current booster pump is within the second preset range, S240 is executed.
If the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is not within the second preset range, it indicates that the gas supply system is still not normal, and the judgment needs to be performed again in the next booster pump idle mode.
Optionally, the second preset range may be the same as or different from the first preset range, and the specific setting of the second preset range is not limited in the embodiment of the present invention.
And S240, judging that the gas consumption of the gas supply system is recovered to be normal.
Optionally, if the gas supply system is abnormally consumed too fast through judgment during the idle mode of the booster pump, it may be specifically judged that the abnormally consumed gas supply system is cured too fast; correspondingly, if the gas supply system is abnormally too slow in consumption through judgment during the idle mode of the prior booster pump, the abnormal cure of the gas supply system can be specifically judged.
In summary, the gas consumption detection method provided by the embodiment of the invention can not only judge the abnormal gas consumption, but also judge the cure of the fault.
Optionally, after it is determined that the gas consumption of the gas supply system is recovered to normal, the preset identifier may be reset. Further, after the gas consumption of the gas supply system is judged to be recovered to be normal, the total gas consumption under the current booster pump idle mode and the total gas injection under the current booster pump idle mode can be reset to zero.
The gas consumption detection device described below may be regarded as a functional module architecture that needs to be set in the central device to implement the gas consumption detection method provided by the embodiment of the present invention; the following description may be cross-referenced with the above.
Fig. 3 is a block diagram of a gas consumption detecting device according to an embodiment of the present invention, and referring to fig. 3, the gas consumption detecting device may include:
the acquiring unit 10 is configured to acquire a gas consumption amount of a buffer tank in the gas supply system and a gas injection amount of the gas injection mechanism in the current booster pump idle mode;
the first calculating unit 20 is configured to calculate a sum of the gas consumption and a total gas consumption of the buffer tank in an idle mode of a previous booster pump, so as to obtain a total gas consumption in an idle mode of a current booster pump;
a second calculating unit 30, configured to calculate a sum of the gas injection amount and a total gas injection amount of the gas injection mechanism in an idle mode of a previous booster pump, so as to obtain a total gas injection amount in an idle mode of a current booster pump;
the first judging unit 40 is configured to judge whether the total gas injection amount in the idle mode of the current booster pump is greater than a first preset threshold;
and a second judging unit 50, configured to judge that the gas consumption of the gas supply system is abnormal if the gas injection total amount in the current booster pump idle mode is greater than the first preset threshold, and a difference between the gas consumption total amount in the current booster pump idle mode and the gas injection total amount in the current booster pump idle mode is not within a first preset range.
Optionally, the second determining unit 50 is configured to determine that the gas supply system gas consumption is abnormal when the gas supply system gas consumption is abnormal, and specifically includes:
if the total gas injection amount in the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of a first preset range, judging that the gas consumption of the gas supply system is too high;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not larger than the lower limit value of the first preset range, it is judged that the gas supply system has too low gas consumption.
Optionally, referring to fig. 4, fig. 4 is a block diagram of another gas consumption detecting device provided in the embodiment of the present invention, and on the basis of the embodiment shown in fig. 3, the device further includes:
and the reporting unit 60 is used for setting a preset identifier so as to report the abnormal gas consumption information of the gas supply system.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A gas consumption detection method is characterized by comprising the following steps:
acquiring the gas consumption of a buffer tank in a gas supply system and the gas injection quantity of a gas injection mechanism in the idle mode of the current booster pump;
calculating the sum of the gas consumption and the total gas consumption of the buffer tank in the idle mode of the last booster pump to obtain the total gas consumption in the idle mode of the current booster pump;
calculating the sum of the fuel gas injection amount and the total fuel gas injection amount of the fuel gas injection mechanism in the last booster pump idle mode to obtain the total fuel gas injection amount in the current booster pump idle mode;
judging whether the total gas injection amount of the current booster pump in the idle mode is larger than a first preset threshold value or not;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not in a first preset range, it is determined that the gas consumption of the gas supply system is abnormal.
2. The gas consumption detection method according to claim 1, wherein if the total gas injection amount in the current booster pump idle mode is greater than the first preset threshold, and the difference between the total gas consumption in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is not within a first preset range, determining that the gas consumption of the gas supply system is abnormal includes:
if the total gas injection amount in the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of a first preset range, judging that the gas consumption of the gas supply system is too high;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not larger than the lower limit value of the first preset range, it is judged that the gas supply system has too low gas consumption.
3. The gas consumption detection method according to claim 1, further comprising, after the determining that the gas consumption of the gas supply system is abnormal:
and setting a preset identifier to report the abnormal gas consumption information of the gas supply system.
4. The gas consumption detecting method according to claim 3, wherein before the determining whether the total gas injection amount in the current booster pump idle mode is greater than a first preset threshold, the method further comprises:
acquiring state information of the preset identification;
if the preset identifier is in a set state, judging whether the total gas injection amount in the idle mode of the current booster pump is greater than a second preset threshold value, wherein the second preset threshold value is greater than the first preset threshold value;
if the total gas injection amount in the idle mode of the current booster pump is larger than the second preset threshold value, and the difference between the total gas consumption amount in the idle mode of the current booster pump and the total gas injection amount in the idle mode of the current booster pump is within a second preset range, judging that the gas consumption of the gas supply system is recovered to be normal;
and if the preset identifier is in a reset state, executing the step of judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a first preset threshold value.
5. The gas consumption detection method according to claim 4, further comprising, after determining that the gas consumption of the gas supply system is recovered to normal:
and resetting the preset identification.
6. The gas consumption detection method according to claim 1, wherein the obtaining of the gas consumption of the buffer tank in the gas supply system in the current booster pump idle mode comprises:
acquiring the residual gas quantity of a buffer tank in the gas supply system when the gas supply system enters the current booster pump idle mode to obtain a first residual gas quantity;
acquiring the residual gas quantity of the buffer tank when the gas supply system exits the current booster pump idle mode to obtain a second residual gas quantity;
and calculating the difference between the first residual gas quantity and the second residual gas quantity to obtain the gas consumption of the buffer tank.
7. The gas consumption detection method according to claim 4, further comprising:
and after the gas consumption of the gas supply system is judged to be abnormal or the gas consumption of the gas supply system is judged to be recovered to be normal, the total gas consumption under the current booster pump idle mode and the total gas injection under the current booster pump idle mode are reset.
8. A gas consumption detection device, comprising:
the acquiring unit is used for acquiring the gas consumption of a buffer tank in the gas supply system and the gas injection quantity of the gas injection mechanism in the idle mode of the current booster pump;
the first calculation unit is used for calculating the sum of the gas consumption and the total gas consumption of the buffer tank in the idle mode of the last booster pump to obtain the total gas consumption in the idle mode of the current booster pump;
the second calculation unit is used for calculating the sum of the fuel gas injection amount and the fuel gas injection total amount of the fuel gas injection mechanism in the last booster pump idle mode to obtain the fuel gas injection total amount in the current booster pump idle mode;
the first judgment unit is used for judging whether the total gas injection amount in the idle mode of the current booster pump is larger than a first preset threshold value or not;
and the second judgment unit is used for judging that the gas consumption of the gas supply system is abnormal if the total gas injection amount of the current booster pump in the idle mode is greater than the first preset threshold value and the difference between the total gas consumption amount of the current booster pump in the idle mode and the total gas injection amount of the current booster pump in the idle mode is not within a first preset range.
9. The gas consumption detecting device according to claim 8, wherein the second determining unit is configured to, if the total gas injection amount in the current booster pump idle mode is greater than the first preset threshold and the difference between the total gas consumption in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is not within a first preset range, determine that the gas consumption of the gas supply system is abnormal, specifically include:
if the total gas injection amount in the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount in the current booster pump idle mode and the total gas injection amount in the current booster pump idle mode is larger than the upper limit value of a first preset range, judging that the gas consumption of the gas supply system is too high;
if the total gas injection amount under the current booster pump idle mode is larger than the first preset threshold value, and the difference between the total gas consumption amount under the current booster pump idle mode and the total gas injection amount under the current booster pump idle mode is not larger than the lower limit value of the first preset range, it is judged that the gas supply system has too low gas consumption.
10. The gas consumption detecting device according to claim 8, further comprising:
and the reporting unit is used for setting the preset identifier so as to report the abnormal gas consumption information of the gas supply system.
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| CN102346060A (en) * | 2010-08-02 | 2012-02-08 | 北汽福田汽车股份有限公司 | Method, equipment and system for monitoring fuel consumption |
| CN105004394A (en) * | 2015-05-21 | 2015-10-28 | 航天科技控股集团股份有限公司 | Commercial vehicle fuel leakage and stealing detection method and device |
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| CA2527563C (en) * | 2005-12-23 | 2007-07-03 | Westport Research Inc. | Apparatus and method for pumping a cryogenic fluid from a storage vessel and diagnosing cryogenic pump performance |
| US20130340721A1 (en) * | 2011-03-14 | 2013-12-26 | Toyota Jidosha Kabushiki Kaisha | Abnormality detection apparatus for a fuel supply system |
| GB2570643B (en) * | 2018-01-23 | 2022-07-27 | Ulemco Ltd | Leak detection in a hydrogen fuelled vehicle |
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| CN102346060A (en) * | 2010-08-02 | 2012-02-08 | 北汽福田汽车股份有限公司 | Method, equipment and system for monitoring fuel consumption |
| CN105004394A (en) * | 2015-05-21 | 2015-10-28 | 航天科技控股集团股份有限公司 | Commercial vehicle fuel leakage and stealing detection method and device |
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