CN111125859A - Method and device for constructing friction model of engine crankshaft system - Google Patents
Method and device for constructing friction model of engine crankshaft system Download PDFInfo
- Publication number
- CN111125859A CN111125859A CN201811297136.8A CN201811297136A CN111125859A CN 111125859 A CN111125859 A CN 111125859A CN 201811297136 A CN201811297136 A CN 201811297136A CN 111125859 A CN111125859 A CN 111125859A
- Authority
- CN
- China
- Prior art keywords
- friction
- model
- engine
- crankshaft system
- main bearing
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004364 calculation method Methods 0.000 claims description 97
- 239000010705 motor oil Substances 0.000 claims description 38
- 238000000354 decomposition reaction Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- NTSBMKIZRSBFTA-AIDOXSFESA-N Digoxigenin bisdigitoxoside Chemical compound C1[C@H](O)[C@H](O)[C@@H](C)O[C@H]1O[C@@H]1[C@@H](C)O[C@@H](O[C@@H]2C[C@@H]3[C@]([C@@H]4[C@H]([C@]5(CC[C@@H]([C@@]5(C)[C@H](O)C4)C=4COC(=O)C=4)O)CC3)(C)CC2)C[C@@H]1O NTSBMKIZRSBFTA-AIDOXSFESA-N 0.000 claims description 11
- 210000003739 neck Anatomy 0.000 claims description 11
- 239000003921 oil Substances 0.000 claims description 7
- 238000005094 computer simulation Methods 0.000 claims 2
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The invention provides a method and a device for constructing a friction model of an engine crankshaft system. Based on the method, corresponding friction models can be constructed for different crankshaft systems, the aim of quickly evaluating the friction of the crankshaft system of the engine is fulfilled, and a basis is provided for the design of related parts for subsequent optimization.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a method and a device for constructing a friction model of an engine crankshaft system.
Background
The engine is a device for converting pressure generated by fuel combustion into rotational kinetic energy, and is the main power source of most automobiles.
At this stage, in order to improve the engine efficiency, in addition to improving the indicated thermal efficiency, it is necessary to reduce various losses such as exhaust loss, cooling loss, and friction loss, and the reduction of friction loss is a basic concept of engine design. Therefore, how to quickly evaluate the friction of the engine crankshaft system is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, in order to solve the above problems, the present invention provides a method and an apparatus for constructing a friction model of an engine crankshaft system, the technical solution is as follows:
a method for constructing a friction model of an engine crankshaft system comprises the following steps:
establishing a calculation model containing a friction coefficient of a crankshaft system, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals;
generating a basic engine crankshaft system friction model formed by the main bearing sealing friction calculation model, the main bearing hydrodynamic friction calculation model and the engine oil flow loss calculation model among the shaft necks;
and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substituting the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain the engine crankshaft system friction model.
Preferably, the calculation model of the seal friction of the main bearing is as follows:
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
Preferably, the main bearing hydrodynamic friction calculation model is as follows:
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0The viscosity of the engine oil was used as test data for model calibration, N is the engine speed, DbIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
Preferably, the model for calculating the flow loss of the engine oil between the shaft necks is as follows:
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
Preferably, the determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and the basic engine crankshaft system friction model comprises:
acquiring relevant parameters of a crankshaft system of an engine;
and inputting the relevant parameters of the engine crankshaft system into the friction model of the basic engine crankshaft system, and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and adopting a curve fitting and regression mode.
An apparatus for constructing a friction model of a crankshaft system of an engine, comprising:
the model establishing module is used for establishing a calculation model containing a crankshaft system friction coefficient, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between shaft necks;
the model generation module is used for generating a basic engine crankshaft system friction model which is composed of the main bearing sealing friction calculation model, the main bearing hydrodynamic friction calculation model and the engine oil flow loss calculation model among the shaft necks;
and the coefficient determining module is used for determining the crankshaft system friction coefficient of the calculation model by utilizing the test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substituting the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain the engine crankshaft system friction model.
Preferably, the calculation model of the seal friction of the main bearing is as follows:
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
Preferably, the main bearing hydrodynamic friction calculation model is as follows:
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0The viscosity of the engine oil was used as test data for model calibration, N is the engine speed, DbIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
Preferably, the model for calculating the flow loss of the engine oil between the shaft necks is as follows:
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
Preferably, the coefficient determining module for determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and the basic engine crankshaft system friction model is specifically configured to:
acquiring relevant parameters of a crankshaft system of an engine; and inputting the relevant parameters of the engine crankshaft system into the friction model of the basic engine crankshaft system, and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and adopting a curve fitting and regression mode.
The invention provides a method and a device for constructing a friction model of an engine crankshaft system, which can construct corresponding friction models aiming at different crankshaft systems, achieve the aim of rapidly evaluating the friction of the engine crankshaft system and provide a basis for the design of related parts for subsequent optimization.
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 described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for constructing a friction model of a crankshaft system of an engine according to an embodiment of the invention;
FIG. 2 is a schematic illustration of parts relating to frictional losses in the engine crankshaft system;
fig. 3 is a schematic structural diagram of an apparatus for constructing a friction model of an engine crankshaft system according to an embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The embodiment of the invention provides a method for constructing a friction model of an engine crankshaft system, and a flow chart of the method is shown in figure 1, and the method comprises the following steps:
and S10, establishing a calculation model containing the friction coefficient of the crankshaft system, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of the engine oil between the shaft necks.
In this embodiment, the friction loss of the engine crankshaft system is mainly defined as main bearing seal friction, main bearing hydrodynamic friction and flow loss of engine oil between the journals, and a part schematic diagram mainly relating to parts is shown in fig. 2, and includes engine parts such as a crankshaft 1, a cylinder block 2, an upper bearing bush 3, a lower bearing bush 4, a main bearing cap 5, a crankshaft front oil seal 6, a crankshaft rear oil seal 7, and the like.
Based on the friction technology analysis and characteristics of the engine crankshaft system, a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals are respectively established. The three calculation models described above are described below:
the main bearing seal friction calculation model is shown in the following formula (1):
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
The main bearing hydrodynamic friction calculation model is shown as the following formula (2):
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0For model calibrationThe viscosity of the motor oil, N engine speed, D, was used as test databIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
The model for calculating the flow loss of oil between the journal is shown in the following equation (3):
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
And S20, generating a basic engine crankshaft system friction model which is composed of a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of the engine oil among the shaft necks.
In this embodiment, according to the relationship between each friction loss and the friction result of the engine crankshaft system, the basic engine crankshaft system friction model is the superposition sum of a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals.
The basic engine crankshaft system friction model is shown in the following formula (4):
wherein cfmep is a basic engine crankshaft system friction model.
And S30, determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substituting the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain the engine crankshaft system friction model.
In this embodiment, for a certain engine, the parameters related to the engine crankshaft system, such as cylinder diameter, stroke, number of cylinders, oil viscosity, main bearing journal, main bearing length, and number of main bearings, are determined and unique. In addition, the corresponding crankshaft system friction work can be obtained by carrying out engine friction decomposition tests under certain boundary conditions (namely different water temperatures and oil temperatures of the engine) and different engine rotating speeds. Therefore, for a certain type of engine, only the crankshaft system friction coefficient exists in the basic engine crankshaft system friction model as the quantity to be determined. And respectively obtaining crankshaft system friction coefficients corresponding to a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals through curve fitting and regression calculation, and substituting the crankshaft system friction coefficients into a basic engine crankshaft system friction model to obtain an engine crankshaft system friction model. At the moment, the influence on the friction work can be calculated by changing parameters such as the cylinder diameter, the stroke, the cylinder number, the engine oil viscosity, the main bearing journal, the main bearing length and the main bearing number in the friction model of the engine crankshaft system.
The method for constructing the friction model of the engine crankshaft system provided by the embodiment of the invention can be used for constructing corresponding friction models aiming at different crankshaft systems, so that the aim of rapidly evaluating the friction of the engine crankshaft system is fulfilled, and a basis is provided for the design of related parts for subsequent optimization.
Based on the method for constructing the friction model of the engine crankshaft system provided by the embodiment, the embodiment of the invention correspondingly provides a device for executing the method for constructing the friction model of the engine crankshaft system, and the structural schematic diagram of the device is shown in fig. 3, and the device comprises:
the model establishing module 10 is used for establishing a calculation model containing a friction coefficient of a crankshaft system, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between shaft necks;
the model generation module 20 is used for generating a basic engine crankshaft system friction model which is composed of a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals;
and the coefficient determining module 30 is configured to determine a crankshaft system friction coefficient of the calculation model by using a test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substitute the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain an engine crankshaft system friction model.
Optionally, the main bearing seal friction calculation model is as follows:
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
Optionally, the main bearing hydrodynamic friction calculation model is:
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0The viscosity of the engine oil was used as test data for model calibration, N is the engine speed, DbIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
Optionally, the model for calculating the flow loss of the engine oil between the journals is as follows:
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
Optionally, the coefficient determining module 30 is configured to determine a crankshaft system friction coefficient of the calculation model by using a test result of the engine friction decomposition test and a basic engine crankshaft system friction model, and is specifically configured to:
acquiring relevant parameters of a crankshaft system of an engine; and inputting the relevant parameters of the engine crankshaft system into a basic engine crankshaft system friction model, and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and adopting a curve fitting and regression mode.
The device for constructing the friction model of the engine crankshaft system, provided by the embodiment of the invention, can be used for constructing corresponding friction models aiming at different crankshaft systems, so that the aim of rapidly evaluating the friction of the engine crankshaft system is fulfilled, and a basis is provided for the design of related parts for subsequent optimization.
The method and the device for constructing the friction model of the engine crankshaft system provided by the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 or 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 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 method for constructing a friction model of an engine crankshaft system is characterized by comprising the following steps:
establishing a calculation model containing a friction coefficient of a crankshaft system, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between journals;
generating a basic engine crankshaft system friction model formed by the main bearing sealing friction calculation model, the main bearing hydrodynamic friction calculation model and the engine oil flow loss calculation model among the shaft necks;
and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substituting the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain the engine crankshaft system friction model.
2. The method of claim 1, wherein the main bearing seal friction calculation model is:
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
3. A method according to claim 1, wherein the main bearing hydrodynamic friction calculation model is:
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0The viscosity of the engine oil was used as test data for model calibration, N is the engine speed, DbIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
4. The method of claim 1, wherein the model for calculating the flow loss of oil between journals is:
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
5. The method of claim 1, wherein determining the crankshaft system friction coefficient of the computational model using the test results of the engine friction factorization test and the base engine crankshaft system friction model comprises:
acquiring relevant parameters of a crankshaft system of an engine;
and inputting the relevant parameters of the engine crankshaft system into the friction model of the basic engine crankshaft system, and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and adopting a curve fitting and regression mode.
6. An apparatus for constructing a friction model of a crankshaft system of an engine, comprising:
the model establishing module is used for establishing a calculation model containing a crankshaft system friction coefficient, wherein the calculation model comprises a main bearing sealing friction calculation model, a main bearing hydrodynamic friction calculation model and a flow loss calculation model of engine oil between shaft necks;
the model generation module is used for generating a basic engine crankshaft system friction model which is composed of the main bearing sealing friction calculation model, the main bearing hydrodynamic friction calculation model and the engine oil flow loss calculation model among the shaft necks;
and the coefficient determining module is used for determining the crankshaft system friction coefficient of the calculation model by utilizing the test result of the engine friction decomposition test and the basic engine crankshaft system friction model, and substituting the crankshaft system friction coefficient into the basic engine crankshaft system friction model to obtain the engine crankshaft system friction model.
7. The apparatus of claim 6, wherein the main bearing seal friction calculation model is:
wherein a is the crankshaft system friction coefficient of the main bearing seal friction calculation model, DbIs the main bearing journal, B is the cylinder diameter, S is the stroke, and Nc is the number of cylinders.
8. The apparatus of claim 6, wherein the main bearing hydrodynamic friction calculation model is:
wherein b is the friction coefficient of the crankshaft system of the main bearing hydrodynamic friction calculation model, mu is the viscosity of the engine oil, and mu is0The viscosity of the engine oil was used as test data for model calibration, N is the engine speed, DbIs a main bearing journal, LbIs the length of the main bearing, nbThe number of main bearings, B the cylinder diameter, S the stroke, and Nc the number of cylinders.
9. The apparatus of claim 6, wherein the model for calculating the flow loss of oil between the journals is:
wherein c is the crankshaft system friction coefficient of the model for calculating the flow loss of the engine oil between the journals, DbFor the main bearing journal, N is the engine speed, NbThe number of main bearings, Nc, is the number of cylinders.
10. The apparatus of claim 6, wherein the coefficient determination module for determining the crankshaft system friction coefficient of the computational model using the test results of the engine friction decomposition test and the base engine crankshaft system friction model is specifically configured to:
acquiring relevant parameters of a crankshaft system of an engine; and inputting the relevant parameters of the engine crankshaft system into the friction model of the basic engine crankshaft system, and determining the crankshaft system friction coefficient of the calculation model by using the test result of the engine friction decomposition test and adopting a curve fitting and regression mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811297136.8A CN111125859B (en) | 2018-11-01 | 2018-11-01 | Method and device for constructing friction model of engine crankshaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811297136.8A CN111125859B (en) | 2018-11-01 | 2018-11-01 | Method and device for constructing friction model of engine crankshaft system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111125859A true CN111125859A (en) | 2020-05-08 |
| CN111125859B CN111125859B (en) | 2024-02-02 |
Family
ID=70495084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811297136.8A Active CN111125859B (en) | 2018-11-01 | 2018-11-01 | Method and device for constructing friction model of engine crankshaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111125859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468748A (en) * | 2021-07-02 | 2021-10-01 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201121164D0 (en) * | 2011-12-09 | 2012-01-18 | Kompetenzzentrum Das Virtuelle Fahrzeug | Device and method to determine engine friction losses |
| CN104297148A (en) * | 2014-10-28 | 2015-01-21 | 扬州大学 | Lubricated friction feature measurement and analysis system and operating method thereof |
| CN106285933A (en) * | 2015-06-26 | 2017-01-04 | 通用汽车环球科技运作有限责任公司 | The double expansion internal combustion engine of single shaft |
-
2018
- 2018-11-01 CN CN201811297136.8A patent/CN111125859B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201121164D0 (en) * | 2011-12-09 | 2012-01-18 | Kompetenzzentrum Das Virtuelle Fahrzeug | Device and method to determine engine friction losses |
| CN104297148A (en) * | 2014-10-28 | 2015-01-21 | 扬州大学 | Lubricated friction feature measurement and analysis system and operating method thereof |
| CN106285933A (en) * | 2015-06-26 | 2017-01-04 | 通用汽车环球科技运作有限责任公司 | The double expansion internal combustion engine of single shaft |
Non-Patent Citations (2)
| Title |
|---|
| 王康;周岳康;: "内燃机曲轴轴承摩擦功损研究" * |
| 赵以贤;毕小平;: "活塞式内燃机的摩擦产热仿真研究" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468748A (en) * | 2021-07-02 | 2021-10-01 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
| CN113468748B (en) * | 2021-07-02 | 2024-04-09 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111125859B (en) | 2024-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mao et al. | Sound quality improvement for a four-cylinder diesel engine by the block structure optimization | |
| Novotny et al. | New efficient methods for powertrain vibration analysis | |
| Zweiri et al. | Dynamic simulation of a single-cylinder diesel engine including dynamometer modelling and friction | |
| CN111125859A (en) | Method and device for constructing friction model of engine crankshaft system | |
| Usman et al. | Transient lubrication of piston compression ring during cold start-up of SI engine | |
| CN112069640B (en) | Method and device for acquiring friction work of engine piston connecting rod system | |
| Lee et al. | Consideration of test parameters in reciprocating tribometers used to replicate ring-on-liner contact | |
| Ma et al. | Nonlinear dynamic behavior analysis of closed-loop self-excited crankshaft model using improved Newmark-β method | |
| Tahan et al. | Performance evaluation of a twin-shaft gas turbine engine in mechanical drive service | |
| CN107665286A (en) | One kind is on automobile engine bearings dynamic analysis method | |
| CN113849933B (en) | One-dimensional simulation method for lubricating system of high-power marine diesel engine | |
| CN112861283B (en) | Method and system for calculating coupling characteristic of crankshaft and bearing | |
| Wang et al. | Lubrication analysis of a connecting-rod bearing in a high-speed engine. Part I: rod and bearing deformation | |
| Yang et al. | Research on the influence of key structural parameters on piston secondary motion | |
| CN106709079B (en) | Lubrication system simulation method and device | |
| Kagnici et al. | The effect of cylinder bore distortion on lube oil consumption and blow-by | |
| Vlase et al. | Mathematical model for dynamic analysis of internal combustion engines | |
| Yuan et al. | Tribological characteristics of piston ring in a free-piston engine for linear generator | |
| Sun et al. | Lubrication analysis of crankshaft bearing considering crankshaft deformation | |
| Hadler et al. | Concept for analysing and optimising oil emission | |
| Chen et al. | The new powertrain virtual analysis process in engine design and development | |
| Cakir | Experimental dynamic analysis of the piston assembly of a running single-cylinder diesel engine | |
| Guo et al. | Analysis of engine vibration and noise induced by a valve train element combined with the dynamic behaviors | |
| Yang et al. | Design of internal combustion engine piston based on skirt lubrication analysis | |
| Bastuck et al. | Systemic Approach for Piston Ring Designs to Reduce Raw Particle Emissions |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |