A method for evaluation of the chain drive efficiency

Егоров, А. В.; Kozlov, Konstantin; Belogusev, Vladimir

doi:10.5937/jaes13-9170

Cited by 15 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. However, the efficiency of this system is not so high; usually it operates only with 1/3 of the possible load carrying capacity [5,12].…”

Section: Various Types Of Chain Transmissionmentioning

confidence: 99%

“…2). However, the efficiency of this chain transmission is not high, usually less than 1/3 of the real loadability which should be specifically examined for this type of drive [5,12].…”

Section: Fig1 Characteristic Solution Of Triplex Chain Transmissionmentioning

confidence: 99%

“…Since the load carrying capacity of these gears is very small, and also transmission ratio is not high, their application is not justified [5]. However, the operating changes significantly with a slightly different chain transmission solution, i.e.…”

Section: Fig3 Characteristic Solution Of Coaxial Triplex Chain Tranmentioning

confidence: 99%

“…Shaft center distances are relatively unrestricted. Whereas gear drive center-to-center distances are restricted to specific dimensions for a given set of gears, the center distances between two chained sprockets can vary anywhere from 50% to 300% or more of their pitch diameters [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Possible Concept Solutions of Chain Drives

et al. 2019

View full text Add to dashboard Cite

Possible concept solutions of chain drives are analysed in this paper in order to point out the benefits of chain drive application and, in particular, the possibility of application of multi-level chain drive. The paper also analyses the possibility of replacing the gear drives with chain drives, which, in the case of short-term drive and using the same direction of rotation, enables a slightly simpler drive solution. The paper doesn’t consider difference between the roller and gear chains application because these two types of chains can be used very successfully. Also, the possibility of using timing belt drive is not considered, but it can be also used very successfully in this type of drive, but only as a transmission of motion.

show abstract

“…1. However, the efficiency of this system is not so high; usually it operates only with 1/3 of the possible load carrying capacity [5,12].…”

Section: Various Types Of Chain Transmissionmentioning

confidence: 99%

“…2). However, the efficiency of this chain transmission is not high, usually less than 1/3 of the real loadability which should be specifically examined for this type of drive [5,12].…”

Section: Fig1 Characteristic Solution Of Triplex Chain Transmissionmentioning

confidence: 99%

Section: Fig3 Characteristic Solution Of Coaxial Triplex Chain Tranmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Possible Concept Solutions of Chain Drives

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The power of mechanical losses in chain drives is an important indicator of the quality of its manufacture. Internal friction in bearing units, as well as those that arise during the rotation of chain hinges, not only influence the energy efficiency of the mechanical system, but also have a significant effect on the rate of degradation processes, and, consequently, the durability and reliability of a chain drive [1]. Therefore, studies aimed at creating high-precision methods for measuring their performance are relevant.…”

Section: Introductionmentioning

confidence: 99%

Development of method to evaluate friction losses of chain drives

Kozlov

Belogusev

Егоров

et al. 2018

Engineering for Rural Development

Self Cite

View full text Add to dashboard Cite

The power of mechanical losses in chain drives is an important characteristic of the quality of their manufacture, since the internal resistances in the bearing assemblies, as well as in the chain hinges, not only influence the energy efficiency of the mechanical system, but also have a significant effect on the rate of degradation processes, and hence its durability and reliability. Widely used methods and instruments for control of mechanical losses in chain drives, for example, strain measurement, do not allow identifying the required parameters with sufficient accuracy in the dynamic modes of operation, and very often require expensive measuring equipment. The purpose of the present paper is to develop a method and instruments for highprecision control of the quality of assembling and manufacturing of chain drives based on identifying the energy loss in their friction units in dynamic modes of operation. This study presents the results of theoretical and experimental substantiation of the method and instruments being developed. The accuracy of the control of the mechanical parameters of chain drives, and, consequently, the quality of their control when using the presented method, is increased by several times in comparison with the results obtained by other existing methods. The developed method can be used for accelerated test of chain drives and chains at manufacturing companies. Having determined the acceptable level of losses in the chain drives, it can be possible to build a system for assessing their technical state, determine their efficiency, reliability and durability with minimal financial and time costs. In further research, we plan to improve the design of the test bench for easy replacement and installation of chain drives in order to reduce the laboriousness of the test process based on the developed method.

show abstract

Changes in Total Friction in the Engine, Friction in Timing Chain Transmissions and Engine Emissions Due to Adding TiO2 Nanoparticles to Engine Oil

Woźniak

Batory

Siczek

et al. 2020

Emiss. Control Sci. Technol.

View full text Add to dashboard Cite

The main aim of the study was to evaluate changes in total friction in the engine, friction in its timing chain transmissions and engine emissions resulting from adding TiO 2 nanoparticles to engine oil. The applicable engine oils and factors affecting their features were discussed. The drive from the crankshaft to the camshaft in an internal combustion engine is usually carried out by means of a cogged belt transmission or a chain transmission when high mileage is required without service operations. The engine performance of analyzed SI engine was obtained from the literature. The dependency of engine emission on engine operating speed was obtained using data from tests of a very similar engine under standard test conditions described in the literature. The changes in engine characteristics caused by varying internal friction conditions were estimated using the engine performance characteristic and engine friction losses, particularly in valve train chain transmission. The friction in such a chain transmission operating under oil lubrication conditions can be determined using its analytical model and measured friction torque occurring between the chain rollers and the pins. The analytical model was developed using the finite element method and additional mathematical formulas. The proposed model allowed obtaining weight and mass inertial moments of all valve train transmission components. The friction torque in contact zone chain roller-pin was obtained using the elaborated physical pendulum method for different conditions of lubrication, namely, without oil, with pure engine oil, and with engine oil containing TiO 2 nanoparticles. The engine oil SAE 10W-40 with/without dispersed 2% wt. TiO 2 nanoparticles was used during tests. The preparation process of studied oils was described. The resulted values of the friction torque in the chain transmission operating in different conditions of lubrication and changes in engine emission have been presented for tests before and after addition of TiO2 nanoparticles into engine oil. During the measurements it was observed that the addition of 2% TiO2 nanoparticles into engine oil reduced the total friction losses by 7-7.7%. Additionally, it was demonstrated that the timing drive and valve train generate about 14.4-18% of overall engine friction losses. Based on the results obtained from a comparative analysis of emission in the other engine with similar power characteristics, the mentioned total friction losses can change the emission of the following compounds in the analyzed SI engine: 17-19% for CO, 8-9% for CO 2 , 13-17% for NO x , and 12-16% for HC. Such changes were dependent on the engine speed. The smallest changes in engine were registered for the rotation speed of 2500 rpm. The oil consumption in the engine and its impact on the PM emission was estimated. The additional arrangements facilitating the extrapolation of the obtained friction results to the cases of using other oils and the method of measuring the PM emission on the test stand were proposed.

show abstract

A method for evaluation of the chain drive efficiency

Cited by 15 publications

References 0 publications

Analysis of Possible Concept Solutions of Chain Drives

Analysis of Possible Concept Solutions of Chain Drives

Development of method to evaluate friction losses of chain drives

Changes in Total Friction in the Engine, Friction in Timing Chain Transmissions and Engine Emissions Due to Adding TiO2 Nanoparticles to Engine Oil

Contact Info

Product

Resources

About