CN114136638A - Method and device for testing effective thermal efficiency of engine - Google Patents
Method and device for testing effective thermal efficiency of engine Download PDFInfo
- Publication number
- CN114136638A CN114136638A CN202210002206.2A CN202210002206A CN114136638A CN 114136638 A CN114136638 A CN 114136638A CN 202210002206 A CN202210002206 A CN 202210002206A CN 114136638 A CN114136638 A CN 114136638A
- Authority
- CN
- China
- Prior art keywords
- engine
- data
- thermal efficiency
- effective thermal
- rotating speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/26—Devices for measuring efficiency, i.e. the ratio of power output to power input
Abstract
The invention provides a method and a device for testing the effective thermal efficiency of an engine, wherein the method comprises the following steps: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period; and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data. According to the method and the device for testing the effective thermal efficiency of the engine, provided by the invention, the oil consumption data, the rotating speed data and the torque percentage data of the engine are collected in the preset time period, and the effective thermal efficiency of the engine in different working states can be accurately calculated based on the data, so that the online real-time test of the effective thermal efficiency of the engine in the whole vehicle level can be realized in different working states.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a method and a device for testing the effective thermal efficiency of an engine.
Background
The effective thermal efficiency is one of important indexes for measuring the economic performance of the engine and the whole machine, the effective thermal efficiency of the engine under each working condition of the engineering machine is accurately tested, the use characteristics of the engine and the matching between the engine and the engineering machine are researched, the use economical efficiency of the engine and the whole machine can be evaluated, a basis can be provided for the engineering machine to correctly select the engine, and meanwhile, technical measures for improving the characteristics of the engine to adapt to the matching requirements can be provided through analyzing various factors influencing the oil consumption of the engine, so that the use performance of the whole device is optimized.
At present, the effective thermal efficiency of the engine of the engineering machinery is measured by off-line detection in an engine bench test. Because the actual running state of the engine on the engineering machinery can not be truly reflected by the test on the engine bench, the effective thermal efficiency of the engine is detected by adopting the engine bench test, and a larger error exists.
Therefore, an online real-time testing method capable of realizing the effective thermal efficiency of the whole-vehicle-level engine under different working states is needed.
Disclosure of Invention
The invention provides a method and a device for testing the effective thermal efficiency of an engine, which are used for solving the defect that the online test of the effective thermal efficiency of a whole-vehicle-level engine is difficult under each working condition of an engineering mechanical engine in the prior art.
In a first aspect, the present invention provides a method for testing the effective thermal efficiency of an engine, comprising: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period; and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
According to the method for testing the effective thermal efficiency of the engine provided by the invention, the effective thermal efficiency of the engine in the preset time period is determined according to the oil consumption data, the rotating speed data and the torque percentage data, and the method comprises the following steps: determining the work of the engine in the preset time period according to the rotating speed data and the torque percentage data; calculating the caloric content of the fuel consumed by the engine in the preset time period according to the fuel consumption data and the heat value of the fuel used by the engine; and determining the effective thermal efficiency of the engine according to the work of the engine and the heat content.
According to the method for testing the effective thermal efficiency of the engine, which is provided by the invention, the work of the engine in the preset time period is determined according to the rotating speed data and the torque percentage data, and the method comprises the following steps: determining the rotating speed at any sampling moment according to the rotating speed data so as to calculate the torque value at any sampling moment; determining a torque percentage at said any one sampling time based on said torque percentage data; determining an actual torque value of the engine at any sampling moment according to the product of the torque value at any sampling moment and the torque percentage at any sampling moment; determining the instantaneous output power of the engine at any sampling moment according to the actual torque value at any sampling moment and the rotating speed at any sampling moment; and calculating the work of the engine in the preset time period according to the instantaneous output power at each sampling moment.
According to the method for testing the effective thermal efficiency of the engine, the method for determining the rotating speed at any sampling moment according to the rotating speed data so as to calculate the torque value at any sampling moment comprises the following steps: acquiring a torque and rotating speed relation curve; and determining a torque value corresponding to the rotating speed at any sampling moment according to the torque-rotating speed relation curve.
According to the method for testing the effective thermal efficiency of the engine, provided by the invention, the calculation of the caloric content of the fuel consumed by the engine in the preset time period according to the fuel consumption data and the heat value of the fuel used by the engine comprises the following steps:
determining the instantaneous oil consumption at any sampling moment according to the oil consumption data;
and determining the total amount of the fuel consumed by the engine in the preset time period according to the instantaneous fuel consumption at each sampling moment, and calculating the heat content of the fuel consumed by the engine by combining the heat value.
In a second aspect, the present invention also provides an apparatus for testing the effective thermal efficiency of an engine, comprising:
the data acquisition module is used for acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by the engine at each sampling moment in a preset time period;
and the data processing module is used for determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
In a third aspect, the present invention provides a system for testing the effective thermal efficiency of an engine, comprising: an engine, a memory, a processor, and a computer program stored on the memory and executable on the processor;
a flow sensor is arranged in an oil inlet pipe of the engine, and an oil return pipe of the engine is connected to an outlet of the flow sensor;
the flow sensor is used for acquiring oil consumption data of the engine in a preset time period;
the processor, when executing the computer program, performs the method steps for testing the effective thermal efficiency of the engine as described in any one of the above.
The invention provides a system for testing the effective thermal efficiency of an engine, which further comprises: a flow display; the flow display is electrically connected with the flow sensor; and the flow display is used for displaying the oil consumption data.
In a fourth aspect, the invention provides a construction machine, which comprises the system for testing the effective thermal efficiency of the engine.
In a fifth aspect, the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method for testing effective thermal efficiency of an engine as described in any one of the above when executing the program.
In a sixth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method for testing the effective thermal efficiency of an engine as described in any one of the above.
According to the method and the device for testing the effective thermal efficiency of the engine, provided by the invention, the oil consumption data, the rotating speed data and the torque percentage data of the engine are collected in the preset time period, and the effective thermal efficiency of the engine in different working states can be accurately calculated based on the data, so that the online real-time test of the effective thermal efficiency of the engine in the whole vehicle level can be realized in different working states.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for testing the effective thermal efficiency of an engine provided by the present invention;
FIG. 2 is a schematic structural diagram of a device for testing the effective thermal efficiency of an engine provided by the invention;
FIG. 3 is a schematic diagram of a system for testing the effective thermal efficiency of an engine provided by the present invention;
FIG. 4 is a graphical illustration of engine data provided by the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, 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.
It should be noted that in the description of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The following describes a method and a device for testing the effective thermal efficiency of an engine provided by the embodiment of the invention with reference to fig. 1-5.
FIG. 1 is a schematic flow chart of a method for testing the effective thermal efficiency of an engine provided by the present invention, as shown in FIG. 1, including but not limited to the following steps:
step 101: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period;
the preset time period can be selected according to needs, and since the working conditions of the engine in different preset time periods can be different, the fuel consumption data, the rotating speed data and the torque percentage data under different working conditions can be acquired by selecting different preset time periods.
The rotational speed data and the torque percentage data can be directly collected by an Electronic Control Unit (ECU) of the engine.
For oil consumption data, the invention can collect the data through a flow sensor. Specifically, a flow sensor can be connected in series in an oil inlet pipeline connected between the fuel tank and the engine, and an engine oil return pipe is connected to an outlet of the flow sensor, so that return oil enters the engine again.
It should be noted that the oil consumption data, the rotating speed data and the torque percentage data in the invention are all time domain data, and the collection frequency of the time domain data can be adjusted according to the actual requirement, optionally, the sampling frequency can be as high as 106Hz。
The invention CAN adopt a vehicle-mounted terminal of the engineering machinery to acquire the rotating speed data and the torque percentage data acquired by the engine ECU and the oil consumption data acquired by the flow sensor through the CAN bus. In addition, other similar data acquisition terminals can be arranged on the engineering machinery and used for directly acquiring oil consumption data, rotating speed data, torque percentage data and other related data of an engine of the engineering machinery. In the process of collecting the data, the engine can be operated on the engineering machine all the time, and the engine does not need to be arranged on an engine stand.
Further, the fuel consumption data, the rotating speed data and the torque percentage data can be displayed on a display screen of the vehicle-mounted terminal in a curve mode. The fuel consumption curve, the rotating speed curve and the torque percentage curve in a preset time period can be respectively obtained based on the fuel consumption data, the rotating speed data and the torque percentage data.
Of course, the mobile terminal and the vehicle-mounted terminal can be in communication connection to acquire the data, and the data can be processed and analyzed.
Step 102: and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
The invention can calculate the total oil consumption of the engine in the preset time period according to the oil consumption data, and can calculate the work of the engine in the preset time period according to the rotating speed data and the torque percentage data. Further, the effective thermal efficiency of the engine in the preset time period can be calculated according to the total oil consumption and the work.
The invention provides a method for testing the effective thermal efficiency of an engine, which can accurately calculate the effective thermal efficiency of the engine under different working states by collecting oil consumption data, rotating speed data and torque percentage data of the engine in a preset time period and can realize the online real-time test of the effective thermal efficiency of the engine at the whole vehicle level under different working states.
Based on the foregoing embodiment, as an optional embodiment, the present invention provides a method for testing effective thermal efficiency of an engine, where determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotation speed data, and the torque percentage data includes: determining the work of the engine in the preset time period according to the rotating speed data and the torque percentage data; calculating the caloric content of the fuel consumed by the engine in the preset time period according to the fuel consumption data and the heat value of the fuel used by the engine; and determining the effective thermal efficiency of the engine according to the work of the engine and the heat content.
Based on the above embodiment, the oil consumption data is time domain data, which includes the instantaneous oil consumption at each sampling time within the preset time period; the rotating speed data is also time domain data, and comprises the rotating speed at each sampling moment in a preset time period; the torque percentage data is also time domain data, including the torque percentage at each sample time within a predetermined time period.
Optionally, determining work of the engine in the preset time period according to the rotation speed data and the torque percentage data comprises: determining the rotating speed at any sampling moment according to the rotating speed data so as to calculate the torque value at any sampling moment; determining a torque percentage at said any one sampling time based on said torque percentage data; determining an actual torque value of the engine at any sampling moment according to the product of the torque value at any sampling moment and the torque percentage at any sampling moment; determining the instantaneous output power of the engine at any sampling moment according to the actual torque value at any sampling moment and the rotating speed at any sampling moment; and calculating the work of the engine in the preset time period according to the instantaneous output power at each sampling moment.
Optionally, determining a rotation speed at any sampling moment according to the rotation speed data to calculate a torque value at any sampling moment, including: acquiring a torque and rotating speed relation curve; and determining a torque value corresponding to the rotating speed at any sampling moment according to the torque-rotating speed relation curve.
The torque variation curve provided by an engine manufacturer along with the rotating speed of the engine can be directly used as a torque rotating speed relation curve; the torque value of the engine at different rotating speeds can be measured through an engine bench test, so that a discrete torque-rotating speed relation graph is obtained, and further, a continuous torque-rotating speed relation curve is obtained in an interpolation mode.
The coordinates of each point on the torque-rotation speed relation curve correspond to a torque and a rotation speed, so that after the value of a certain rotation speed is determined, the torque value corresponding to the certain rotation speed can be determined on the torque-rotation speed relation curve.
Further, the torque value corresponding to the rotating speed at any sampling moment can be determined through the torque-rotating speed relation curve by adopting the mode. The invention can also obtain a torque value curve of the engine in a preset time period according to the torque value at each sampling moment.
Optionally, the actual torque value of the engine at any sampling moment is determined according to the product of the torque value at any sampling moment and the torque percentage at any sampling moment, and the calculation method is as follows:
T＝T'*B
wherein T is the actual torque value at any sampling moment, and T' is the torque value at any sampling moment; b is the torque percentage at any one of the sampling moments.
Based on the mode, the method can calculate the actual torque value at each sampling moment.
Optionally, the instantaneous output power of the engine at any sampling moment is determined according to the actual torque value at any sampling moment and the rotating speed at any sampling moment, and the calculation formula is as follows:
Pe＝T*n/9549；
wherein, PeThe instantaneous output power at any sampling moment; t is the actual torque value at any sampling moment; and n is the rotating speed of any sampling moment.
Based on the mode, the actual torque value of each sampling moment can be calculated, and the instantaneous output power curve can be obtained according to the instantaneous output power of each sampling moment, so that the working calculation formula of the engine in the preset time period from 0 to t is as follows:
wherein, W is the work of the engine in a preset time interval from 0 to t, and P (t) is an instantaneous output power curve.
Because the oil consumption data comprises the instantaneous oil consumption at each sampling moment in the preset time period, an instantaneous oil consumption curve can be obtained according to the instantaneous oil consumption at each sampling moment. Then, according to the instantaneous fuel consumption curve, the total amount of fuel consumed by the engine in the preset time period 0 to t can be calculated, and the calculation formula is as follows:
wherein L is the total amount of fuel consumed by the engine; q (t) is the instantaneous fuel consumption curve.
Further, the calculation formula of the caloric content of the total fuel consumption of the engine in the preset time period is as follows:
Q＝L*H；
wherein Q is caloric content; h is the heat value of the fuel used by the engine, wherein the fuel can be diesel oil, gasoline and the like.
After the working and the heat content of the consumed fuel oil of the engine in a preset time period are calculated, the effective thermal efficiency eta of the engine is as follows:
η＝W/Q。
the invention provides a method for testing the effective thermal efficiency of an engine, which can accurately calculate the effective thermal efficiency of the engine under different working states by acquiring oil consumption data, rotating speed data and torque percentage data of the engine in a preset time period.
Fig. 2 is a schematic structural diagram of an apparatus for testing effective thermal efficiency of an engine provided by the present invention, as shown in fig. 2, the apparatus includes: a data acquisition module 201 and a data processing module 202;
the data acquisition module 201 is configured to acquire oil consumption data, rotational speed data and torque percentage data acquired by an engine at each sampling time within a preset time period;
and the data processing module 202 is configured to determine the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
The invention provides a device for testing the effective thermal efficiency of an engine, which can accurately calculate the effective thermal efficiency of the engine under different working states by acquiring oil consumption data, rotating speed data and torque percentage data of the engine at a preset time period.
It should be noted that, in the testing apparatus for engine effective thermal efficiency according to the embodiment of the present invention, when the testing apparatus is in specific operation, the testing method for engine effective thermal efficiency according to any of the above embodiments may be performed, and details of this embodiment are not described herein.
The invention also provides a system for testing the effective thermal efficiency of the engine, which comprises: an engine, a memory, a processor, and a computer program stored on the memory and executable on the processor; a flow sensor is arranged in an oil inlet pipe of the engine, and an oil return pipe of the engine is connected to an outlet of the flow sensor; the flow sensor is used for acquiring oil consumption data of the engine in a preset time period; the processor, when executing the computer program, performs the method steps of testing the effective thermal efficiency of any of the engines.
Fig. 3 is a schematic structural diagram of a system for testing effective thermal efficiency of an engine according to the present invention, and as shown in fig. 3, a flow sensor is connected in series with an oil inlet pipeline connected between a fuel tank and the engine, an engine oil return pipe is connected to an outlet of the flow sensor and reenters the engine, data collected by the flow sensor is transmitted to a flow display through a signal cable, the flow display can display instantaneous oil consumption q (L/h) and working time t(s), and the flow display can output the oil consumption data to a data collection instrument. The whole vehicle CAN bus CAN acquire the rotating speed data and the torque percentage of the engine and transmit the rotating speed data and the torque percentage to the data acquisition instrument.
Of course, the data acquisition instrument CAN also be directly connected with a CAN bus of the engine and is used for acquiring the rotating speed data and the torque percentage data of the ECU of the engine.
The data acquisition instrument can realize synchronous acquisition of instantaneous oil consumption, engine rotating speed and engine torque percentage, can also carry out synchronous acquisition with other physical quantities, and stores the data as a time domain file.
Furthermore, by setting the acquisition frequency of the data acquisition module instrument, the change rule of physical quantities such as instantaneous oil consumption and the like of the engineering machinery under various working conditions can be analyzed in microsecond level.
The invention can also be provided with a display module, and the oil consumption data, the rotating speed data and the torque percentage data are displayed in a curve form in a visual mode. FIG. 4 is a graph illustrating engine data curves provided by the present invention, as shown in FIG. 4, wherein the abscissa of the plot corresponding to 5 curves represents time in units of S; wherein, the ordinate of the rotating speed curve represents the rotating speed, and the unit is r/min; the ordinate of the torque value curve represents the torque in N × m; the ordinate of the torque percentage curve represents the torque percentage; the ordinate of the instantaneous oil consumption curve represents the instantaneous oil consumption, and the unit is L/h; the ordinate of the instantaneous output power curve represents the instantaneous output power in units of w.
According to the system for testing the effective thermal efficiency of the engine, provided by the invention, the effective thermal efficiency of the engine in different working states can be accurately calculated by acquiring the oil consumption data, the rotating speed data and the torque percentage data of the engine at a preset time period; the invention enables the effective thermal efficiency test of the engine to be separated from the test bench, and the effective thermal efficiency test can be accurately measured in the whole test process of the prototype.
The invention also provides engineering machinery comprising the system for testing the effective thermal efficiency of the engine.
According to the engineering machinery provided by the invention, the effective thermal efficiency of the engine in different working states can be accurately calculated by acquiring the oil consumption data, the rotating speed data and the torque percentage data of the engine at a preset time period; the invention enables the effective thermal efficiency test of the engine to be separated from the test bench, and the effective thermal efficiency test can be accurately measured in the whole test process of the prototype.
Furthermore, the invention combines different working conditions of the engineering machinery to analyze the oil consumption and the heat efficiency of the engine, and can provide technical measures suitable for the matching requirement of the engineering machinery through analyzing various factors influencing the oil consumption of the engine, optimize the service performance of the whole power device and improve the economical efficiency of products.
Fig. 5 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may invoke logic instructions in memory 530 to perform a method of testing the effective thermal efficiency of an engine, the method comprising: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period; and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform a method of testing the effective thermal efficiency of an engine provided by the above methods, the method comprising: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period; and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for testing effective thermal efficiency of an engine provided by the above embodiments, the method comprising: acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period; and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for testing the effective thermal efficiency of an engine, comprising:
acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by an engine at each sampling moment in a preset time period;
and determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
2. The method for testing the effective thermal efficiency of the engine according to claim 1, wherein the step of determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data comprises the following steps:
determining the work of the engine in the preset time period according to the rotating speed data and the torque percentage data;
calculating the caloric content of the fuel consumed by the engine in the preset time period according to the fuel consumption data and the heat value of the fuel used by the engine;
and determining the effective thermal efficiency of the engine according to the work of the engine and the heat content of the consumed fuel oil.
3. The method for testing the effective thermal efficiency of an engine according to claim 2, wherein said determining the work of the engine in the preset time period based on the rotational speed data and the torque percentage data comprises:
determining the rotating speed at any sampling moment according to the rotating speed data so as to calculate the torque value at any sampling moment;
determining a torque percentage at said any one sampling time based on said torque percentage data;
determining an actual torque value of the engine at any sampling moment according to the product of the torque value at any sampling moment and the torque percentage at any sampling moment;
determining the instantaneous output power of the engine at any sampling moment according to the actual torque value at any sampling moment and the rotating speed at any sampling moment;
and calculating the work of the engine in the preset time period according to the instantaneous output power at each sampling moment.
4. The method for testing the effective thermal efficiency of the engine according to claim 3, wherein the determining the rotating speed at any sampling moment according to the rotating speed data to calculate the torque value at any sampling moment comprises the following steps:
acquiring a torque and rotating speed relation curve;
and determining a torque value corresponding to the rotating speed at any sampling moment according to the torque-rotating speed relation curve.
5. The method for testing the effective thermal efficiency of the engine according to claim 3, wherein the step of calculating the caloric content of the fuel consumed by the engine in the preset time period according to the fuel consumption data and the calorific value of the fuel used by the engine comprises the following steps:
determining the instantaneous oil consumption at any sampling moment according to the oil consumption data;
and determining the total amount of the fuel consumed by the engine in the preset time period according to the instantaneous fuel consumption at each sampling moment, and calculating the heat content of the fuel consumed by the engine by combining the heat value.
6. An apparatus for testing the effective thermal efficiency of an engine, comprising:
the data acquisition module is used for acquiring oil consumption data, rotating speed data and torque percentage data which are acquired by the engine at each sampling moment in a preset time period;
and the data processing module is used for determining the effective thermal efficiency of the engine in the preset time period according to the oil consumption data, the rotating speed data and the torque percentage data.
7. A system for testing the effective thermal efficiency of an engine, comprising: an engine, a memory, a processor, and a computer program stored on the memory and executable on the processor;
a flow sensor is arranged in an oil inlet pipe of the engine, and an oil return pipe of the engine is connected to an outlet of the flow sensor;
the flow sensor is used for acquiring oil consumption data of the engine in a preset time period;
the processor, when executing the computer program, performs the method steps for testing the effective thermal efficiency of an engine as recited in any one of claims 1 to 5.
8. The system for testing the effective thermal efficiency of an engine of claim 7, further comprising: a flow display;
the flow display is electrically connected with the flow sensor;
and the flow display is used for displaying the oil consumption data.
9. A work machine, comprising: a system for testing the effective thermal efficiency of an engine as recited in claim 8.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the computer program when executed by the processor implements method steps for testing the effective thermal efficiency of an engine as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002206.2A CN114136638A (en) | 2022-01-04 | 2022-01-04 | Method and device for testing effective thermal efficiency of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002206.2A CN114136638A (en) | 2022-01-04 | 2022-01-04 | Method and device for testing effective thermal efficiency of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114136638A true CN114136638A (en) | 2022-03-04 |
Family
ID=80381579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210002206.2A Pending CN114136638A (en) | 2022-01-04 | 2022-01-04 | Method and device for testing effective thermal efficiency of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114136638A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033226A (en) * | 2012-12-17 | 2013-04-10 | 三一重机有限公司 | Work performance test system and method |
| CN104034466A (en) * | 2014-06-09 | 2014-09-10 | 三一汽车制造有限公司 | Vehicle power testing and calculation method and device |
| CN105157893A (en) * | 2015-05-14 | 2015-12-16 | 山东大学 | Engine instantaneous torque measuring system and method |
| US20180052025A1 (en) * | 2016-08-19 | 2018-02-22 | Exxonmobil Research And Engineering Company | Method for improving fuel economy test precision in on-road vehicles |
| CN109781175A (en) * | 2018-12-26 | 2019-05-21 | 中汽研（天津）汽车工程研究院有限公司 | A kind of device and method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling |
| CN110542562A (en) * | 2019-09-26 | 2019-12-06 | 潍柴动力股份有限公司 | Engine torque measuring method, engine torque measuring device, engine torque control device, and storage medium |
| CN113465968A (en) * | 2021-06-29 | 2021-10-01 | 浙江三一装备有限公司 | Efficiency test system for construction machine |
-
2022
- 2022-01-04 CN CN202210002206.2A patent/CN114136638A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033226A (en) * | 2012-12-17 | 2013-04-10 | 三一重机有限公司 | Work performance test system and method |
| CN104034466A (en) * | 2014-06-09 | 2014-09-10 | 三一汽车制造有限公司 | Vehicle power testing and calculation method and device |
| CN105157893A (en) * | 2015-05-14 | 2015-12-16 | 山东大学 | Engine instantaneous torque measuring system and method |
| US20180052025A1 (en) * | 2016-08-19 | 2018-02-22 | Exxonmobil Research And Engineering Company | Method for improving fuel economy test precision in on-road vehicles |
| CN109781175A (en) * | 2018-12-26 | 2019-05-21 | 中汽研（天津）汽车工程研究院有限公司 | A kind of device and method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling |
| CN110542562A (en) * | 2019-09-26 | 2019-12-06 | 潍柴动力股份有限公司 | Engine torque measuring method, engine torque measuring device, engine torque control device, and storage medium |
| CN113465968A (en) * | 2021-06-29 | 2021-10-01 | 浙江三一装备有限公司 | Efficiency test system for construction machine |
Non-Patent Citations (1)
| Title |
|---|
| 中国汽车技术研究中心标准化研究所: "《汽车标准汇编2006（下册）》", 冶金工业出版社, pages: 125 - 126 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103471841B (en) | A kind of rotating machinery vibrating failure diagnosis method | |
| CN105510038A (en) | Wind turbine generator fault monitoring method and device | |
| CN105157893B (en) | A kind of motor instant torch measuring system and method | |
| CN105181530A (en) | Engine machine oil viscosity on-line detection device and detection method | |
| CN106679862A (en) | Engine actual output torque measuring method and system | |
| CN204855055U (en) | Instantaneous torque measurement system of engine | |
| CN110553844A (en) | Method and system for detecting misalignment fault of rotary machine | |
| CN104165742A (en) | Cross spectral function-based operational modal analysis experiment method and apparatus | |
| CN104266703B (en) | Diesel engine fuel consumption polymeter | |
| CN113074798A (en) | System and method for detecting oil level of engine oil based on ultrasonic waves | |
| CN109870305A (en) | A kind of servo motor testing stand | |
| CN107918032B (en) | Rotating speed measuring method for spatial multi-source sound signal fusion | |
| CN112710871A (en) | Test method and device for positioning speed measurement system host | |
| CN113378359B (en) | Method and device for evaluating oil consumption of engine and transmission efficiency of whole vehicle | |
| CN114136638A (en) | Method and device for testing effective thermal efficiency of engine | |
| CN101285444A (en) | Diesel oil pump fuel injection amount measurement method | |
| KR20180022330A (en) | Data measure system for performance verification test of marine large engine and method thereof | |
| CN204831965U (en) | Engine oil viscosity on -line measuring device | |
| CN108572077A (en) | A kind of automobile engine detecting system | |
| CN202483853U (en) | Water pump delivery inspection device | |
| CN109894476B (en) | Fault diagnosis method and device for hydraulic equipment of cold-rolled silicon steel production line | |
| CN106066845B (en) | A kind of study estimation method of pumping-unit workdone graphic | |
| CN113984392B (en) | Online testing and evaluating method for vibration quality of electric drive assembly system | |
| Elkin et al. | Automated assessment system of energy parameters of the tractor fleet | |
| CN110793590A (en) | Method, device and equipment for calculating residual working time of oil tank and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |