Friction Reduction in Power Cylinder Systems for Pass enger Car Diesel Engines

Hanke, Wolfgang; Ando, Hajime; Fahr, Matthias; Voigt, Marco

doi:10.1007/s38313-014-0018-y

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…In addition to engine tests, more and more numerical methods are being used in the development and optimization of piston ring-pack. This makes it possible to gain a better understanding of the complex relationships between phenomena that influence each other such as friction and wear, sealing of the ring-pack, oil transport and consumption, HC emissions, fuel entry and acoustics to determine the targeted measures for increasing performance and minimizing fuel consumption [4,5].…”

Section: Introductionmentioning

confidence: 99%

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Lyubarskyy

Bartel

2016

Tribology International

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Section: Introductionmentioning

confidence: 99%

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Lyubarskyy

Bartel

2016

Tribology International

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“…Lubricants 2021, 9,116 The analysis of the set of piston rings in the present investigation is based on the ical and operational characteristics of a direct injection four-stroke diesel engine with imum power of 95 kW with reference Isuzu 4JJ1. Table 1 indicates the main technical fications of the test engine.…”

Section: Test Bench Enginementioning

confidence: 99%

“…where f v is the viscous friction force and f a is the asperity friction force. The calculation of f v is carried out using Equation (9).…”

Section: Contact Friction Modelmentioning

confidence: 99%

“…Therefore, it is necessary to achieve a better compression of the complex processes related to the interaction between the piston rings and the cylinder liner, which influence friction, wear, sealing capacity, consumption of lubricating oil, among other factors. This is of utmost importance to achieve an increase in performance and a reduction in fuel consumption [9]. Another problem present in piston rings is leakage loss in the combustion chamber.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Kinematics and Dynamics of the Ring Pack of a Diesel Engine by Means of the Construction of CFD Model in Conjunction with Mathematical Models

2021

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The present research aims to analyze the kinematic and dynamic behavior of the piston ring package. The development of the research was carried out through the development of numerical simulation by means of CFD. The analysis involves the three piston rings for the development of simulations that are closer to the real conditions of the engine since most of the investigations tend to focus on the study of the compression ring only. The simulation was reinforced by the incorporation of mathematical models, which allow determining the piston kinematics, the lubrication properties as a function of temperature, contact friction, and gas leakage. For the simulation, the CAD of the piston and the connecting rod—crankshaft mechanism was carried out, taking as a reference the geometry of a diesel engine. From the results obtained, it was possible to show that the first ring exhibits considerably greater radial and axial movement compared to the second and third piston rings. Additionally, it was shown that the first and second rings tend to maintain a negative tilt angle throughout the combustion cycle, which facilitates the advancement of the combustion gases over the piston grooves. Therefore, it is necessary to use strategies so that these rings tend to maintain a positive inclination. The analysis of the pressure conditions in the second ring are 150% and 480% higher compared to the conditions present in the third ring. Due to the above, it is necessary to focus efforts on the design of the profile of this ring. The study of energy losses showed that the combination of leakage gases and friction are responsible for a mechanical loss between 6–16%. In general, the development of the proposed methodology is a novel tool for the joint analysis of the kinematic characteristics, pressure conditions, and energy losses. In this way, integrated analysis of changes caused by piston ring designs is possible.

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Coating Technologies for Automotive Engine Applications

Gangopadhyay

2015

Coating Technology for Vehicle Applications

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Friction Reduction in Power Cylinder Systems for Pass enger Car Diesel Engines

Cited by 5 publications

References 3 publications

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Study of the Kinematics and Dynamics of the Ring Pack of a Diesel Engine by Means of the Construction of CFD Model in Conjunction with Mathematical Models

Coating Technologies for Automotive Engine Applications

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