Development of a Method for Diagnosing Injectors of Diesel Engines

Gabitov, Ildar; Negovora, Andrey V.; Nigmatullin, Shamil; Kozeev, Arseny; Razyapov, Mahmut

doi:10.26552/com.c.2021.1.b46-b57

Cited by 4 publications

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The size of the heat loss is an indirect feature characterizing the technical state of the friction pair, therefore, the thermal mode of the mechanical transmission unit can be used to diagnose its state. In addition, the result of exceeding the limit temperatures will be a violation of the normal lubrication mode and the transmission unit will enter the limit state [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Temperature Conditions and Diagnostics of Bearings

Pastukhov¹,

Timashov²,

Stanojević³

2023

Applied Engineering Letters

View full text Add to dashboard Cite

The purpose of this work is to prove the effectiveness of a practical study of the temperature regime for diagnosing bearing assemblies of mechanical transmissions. Using the example of a two-row roller bearing of the rear support of the intermediate shaft of the vehicle transmission, the temperature in the friction zone under different transmission operating modes on a KAMAZ-5320 was calculated. Finite element analysis of temperature fields made it possible to determine the relationship between the temperature on the outer surface of the bearing assembly and the temperature in the friction zone through the coefficient k=0.327. The zone for temperature measurement -the bearing cover is determined and the maximum temperature of its heating is set. Thermal imaging observations confirmed the effectiveness of the developed method of technical diagnostics of bearings.

show abstract

Section: Introductionmentioning

confidence: 99%

Temperature Conditions and Diagnostics of Bearings

Pastukhov¹,

Timashov²,

Stanojević³

2023

Applied Engineering Letters

View full text Add to dashboard Cite

show abstract

“…Data on the heat release of friction units can serve as an indicator of their technical condition and a combination of effective methods, techniques and technical means for diagnosing mechanical transmission units will provide increased reliability [1][2][3][4][5]. For bearing assemblies, measuring not the amount of heat released but the friction temperature in the wear zone is advisable.…”

Section: Introductionmentioning

confidence: 99%

Procedure for Simulation of Stable Thermal Conductivity of Bearing Assemblies

Pastukhov¹,

Timashov²

2023

adeletters

View full text Add to dashboard Cite

The article developed a methodological basis for implementing automatic diagnostics based on thermal analysis of bearing assemblies. The diagnostic criteria of the technical operation condition and the procedure for determining the temperature ratio inside and outside the bearing unit based on the finite element analysis (FEA) of stable thermal conductivity have proven to be justified. Method of simulation of stable thermal conductivity of bearing units using KOMPAS-3D software and APM FEM finite element analysis module is proposed. The developed method was tested in practice and verified based on the results of theoretical and experimental studies. The developed method enables the determination of the relationship between the observed temperature on the surface of the bearing units and the friction temperature in the wear zone.

show abstract

Diagnostics of Transmission Bearing Units Based on Thermal Load Study

Pastukhov

Timashov

2023

S-h. maš. tehnol.

View full text Add to dashboard Cite

Abstract. The operating temperature of the transmission unit is noted to affect its reliability and can serve as a diagnostic criterion. It is proposed to diagnose the transmission unit technical condition by the temperature in the friction zone in order to take into account the influence of air temperature, solar radiation heating and adjacent heat-producing objects. (Research purpose) To ensure the bearing unit controllability based on the thermal load study. (Materials and methods) The study uses the results of calculating the nominal and operational load of the rear power take-off shaft of the Belarus-82.1 tractor. The study uses the three-dimensional modeling and finite element analysis of the temperature distribution under steady-state thermal conductivity conditions. To establish the functional relationship between the temperature in the friction zone and the diagnostic temperature, the method of finite element analysis is used under steady-state thermal conductivity conditions. (Results and discussion) The maximum load modes and temperatures in the friction zone were determined for the 60310A bearing of the power take-off shaft gearbox during aggregation with different agricultural machines such as 4300 Newtons and 2.4 degrees Celsius for FS-2.0U garden cutter (540 revolutions per minute); 4126 Newtons and 40.7 degrees Celsius for Rovatti T3K80/90/2 (540 revolutions per minute) irrigation pump; 956 Newtons and 13.0 degrees Celsius for ROU-6 (1000) manure spreader; 2615 Newtons and 36.6 degrees Celsius for KPRN-3.0A (1000) mower-conditioner. The maximum temperatures as a diagnostic criterion are established in the friction zone, which equal to 41.7 degrees Celsius at 540 revolutions per minute engine speed and 31 degrees Celsius at 1000 revolutions per minute. (Conclusions) Since the direct measurement of the temperature in the friction zone is hardly possible without changing the bearings design, it is proposed to measure the diagnostic temperature on the unit used for mounting the temperature sensor. The coefficient of proportionality k=0.53 of the finite element model is determined. In order to implement diagnostics in an automatic mode, an algorithm is developed for a digital transmission malfunction recorder. Its design is based on the ATmega328 programmable microcontroller and TMP36 temperature sensors. It is found that the digital transmission malfunction recorder provides automatic control of up to seven different transmission units simultaneously, taking into account the ambient temperature.

show abstract

Development of a Method for Diagnosing Injectors of Diesel Engines

Cited by 4 publications

References 22 publications

Temperature Conditions and Diagnostics of Bearings

Temperature Conditions and Diagnostics of Bearings

Procedure for Simulation of Stable Thermal Conductivity of Bearing Assemblies

Diagnostics of Transmission Bearing Units Based on Thermal Load Study

Contact Info

Product

Resources

About