Diagnostics of Degradation of the Lock of a Sealing Ring According to the Loss of Working Gases of an Internal Combustion Engine

Balyts’kyi, O. I.; Abramek, K. F.; Shtoeck, Т.; Osipowicz, Т.

doi:10.1007/s11003-014-9704-9

Cited by 12 publications

(9 citation statements)

References 4 publications

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“…In the analyzed period (year 2009) in the Lublin branch more than 16,000 cases of exchange of material factors of life were registered. Frequently mentioned ones included: motor oil (2,281 Table 9 summarizes the results of descriptive statistics. The average values of the annual cost of repairs in each group tend compatible with the accepted criterion for division of the population.…”

Section: Results Of Statistical Analysis Of the Test Vehicle Repair Cmentioning

confidence: 99%

“…These include type, technical condition and reliability of the vehicles, the intensity of their use, transport fees, the state of the road infrastructure, the cost of consumables (fuel, oil, fluid engineering), personnel costs, the size of taxes and administrative fees [2,3,4,9,11,13,16,17,24,25,28,39]. It is commonly known that the properties and operational parameters of internal combustion engines change under working conditions [2,35]. Fuel consumption of modern means of transport and, especially, road vehicles, is the parameter that is of interest to every manufacturer and user [32].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Statistical Analyses of Selected Maintenance Parameters of Vehicles of Road Transport Companies

Caban¹,

Dróździel²,

Krzywonos³

et al. 2019

Adv. Sci. Technol. Res. J.

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The article presents the methods for preliminary statistical analyses of selected maintenance parameters of vehicles in road transport companies. The methodology was illustrated by presenting the results pertaining to the calculations of the maintenance intensity as well as the cost of parts and repairs of cars in the Lublin Regional Branch of the Polish Post Logistics Centre. These results provided comparative material useful in the evaluation of the maintenance efficiency of various road transport systems.

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Section: Results Of Statistical Analysis Of the Test Vehicle Repair Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Statistical Analyses of Selected Maintenance Parameters of Vehicles of Road Transport Companies

Caban¹,

Dróździel²,

Krzywonos³

et al. 2019

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

show abstract

“…Observer-based method [12,13,14,15] is proven to be a good way to predict the output of SISO system. Engine cylinder pressure signal can be used to characterize the engine combustion state [16,17]. Due to the influence of multiple variables, it is difficult to establish a precise physical model of cylinder pressure.…”

Section: Introductionmentioning

confidence: 99%

A Virtual In-Cylinder Pressure Sensor Based on EKF and Frequency-Amplitude-Modulation Fourier-Series Method

Wang

Sun

et al. 2019

Sensors

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As a crucial and critical factor in monitoring the internal state of an engine, cylinder pressure is mainly used to monitor the burning efficiency, to detect engine faults, and to compute engine dynamics. Although the intrusive type cylinder pressure sensor has been greatly improved, it has been criticized by researchers for high cost, low reliability and short life due to severe working environments. Therefore, aimed at low-cost, real-time, non-invasive, and high-accuracy, this paper presents the cylinder pressure identification method also called a virtual cylinder pressure sensor, involving Frequency-Amplitude Modulated Fourier Series (FAMFS) and Extended-Kalman-Filter-optimized (EKF) engine model. This paper establishes an iterative speed model based on burning theory and Law of energy Conservation. Efficiency coefficient is used to represent operating state of engine from fuel to motion. The iterative speed model associated with the throttle opening value and the crankshaft load. The EKF is used to estimate the optimal output of this iteration model. The optimal output of the speed iteration model is utilized to separately compute the frequency and amplitude of the cylinder pressure cycle-to-cycle. A standard engine’s working cycle, identified by the 24th order Fourier series, is determined. Using frequency and amplitude obtained from the iteration model to modulate the Fourier series yields a complete pressure model. A commercial engine (EA211) provided by the China FAW Group corporate R&D center is used to verify the method. Test results show that this novel method possesses high accuracy and real-time capability, with an error percentage for speed below 9.6% and the cumulative error percentage of cylinder pressure less than 1.8% when A/F Ratio coefficient is setup at 0.85. Error percentage for speed below 1.7% and the cumulative error percentage of cylinder pressure no more than 1.4% when A/F Ratio coefficient is setup at 0.95. Thus, the novel method’s accuracy and feasibility are verified.

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“…The seizure process of the piston ring/cylinder liner-contact is a well investigated phenomenon, but is still not fully understood. From the damage analysis of fired engine components (such as published in [19]) to the evaluation of engine operation parameters [20,21], the basic nature of piston ring seizure has been investigated using model test systems over the years. Depending on the exact material and lubricant combination, the mechanism and evolution of seizure and scuffing could be determined.…”

Section: Introductionmentioning

confidence: 99%

Development of a Model Test System for a Piston Ring/Cylinder Liner-Contact with Focus on Near-to-Application Seizure Behaviour

et al. 2019

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Physical simulations of tribo contacts in internal combustion engines can act as a supporting tool to match upcoming guidelines and emission restrictions. In particular, the scuffing resistance of the contact between the piston ring and cylinder liner suffers under decreasing oil viscosity and limitation of antiwear additives. This paper aims to provide an experimental method to simulate the scuffing of the piston ring/cylinder liner-contact and to validate this method with real engine parts and the literature from engine tests. The experimental methodology uses a linear tribometer TE77 to test specimens from original piston rings and liners under reciprocating motion. Additionally, the ring specimen is given the opportunity to perform secondary movements (ring twisting, ring turning) and to run under deficient lubrication conditions similar to the engine. A specially designed test strategy enables the reproducible creation of seizure of the tribosystem. The seizure resistance of two engine oils, tested for validation, correlates with the known engine performance. Therefore, the model test system can be seen as a reproducible tool for simulating seizure of a ring/liner-system, showing similar trends and wear mechanisms as in an engine. Surface analysis depicts similarities between the scuffed surfaces of an engine and the model and discusses the origin of seizure based on the model specimens together with the relevant literature.

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Diagnostics of Degradation of the Lock of a Sealing Ring According to the Loss of Working Gases of an Internal Combustion Engine

Cited by 12 publications

References 4 publications

Statistical Analyses of Selected Maintenance Parameters of Vehicles of Road Transport Companies

Statistical Analyses of Selected Maintenance Parameters of Vehicles of Road Transport Companies

A Virtual In-Cylinder Pressure Sensor Based on EKF and Frequency-Amplitude-Modulation Fourier-Series Method

Development of a Model Test System for a Piston Ring/Cylinder Liner-Contact with Focus on Near-to-Application Seizure Behaviour

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