Reibleistungsmessungen am Befeuerten Dieselmotor

Deuß, Thomas; Ehnis, Holger; Freier, Rudolf; Künzel, Reiner

doi:10.1007/bf03225570

Cited by 26 publications

(4 citation statements)

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“…Research results presented in the thesis by Kotnarowski [39] confirm the possibility of getting very favourable effects also by using molybdenum disulphide. The influence of the type of layer covering the load-bearing surface of the piston on the wear of mating surfaces and friction losses has been the subject of intensive research [38,40,41]. Research results obtained in these studies unequivocally confirm the positive role of standard coatings in reducing the possibility of piston seizure in the cylinder and reducing the wear of the cylinder surface under normal engine operating conditions.…”

Section: Analysis Of the Influence Of Coatings On The Wear Of Austeni...mentioning

confidence: 98%

Key Determinants for High-Alloyed Cast Irons for Mechanical Engineering

Pacha-Gołębiowska

Piekarska

2022

International Journal of Applied Mechanics and Engineering

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This work presents the factors determining cast iron, and particularly austenitic high-alloy cast iron as a construction material, which is ranked among the leading casting alloys of iron with carbon, mainly due to its very good service properties, which makes it dedicated as a material for automotive castings, pipe and fitting castings and components resistant to elevated temperatures, corrosion and abrasive wear. Construction materials currently used in industry have increasingly better properties and their potential is depleting quickly. This forces the manufacturers to adjust the requirements and production capabilities of cast iron using the most modern technologies that give the expected beneficial economic and operating effects. The paper quotes the results of research in the field of the offered technologies that give special surface features to machine parts made of cast iron by modernising the parameters of the technological process of obtaining high-alloy austenitic cast iron, i.e., by applying coatings, as well as by appropriate surface treatment, the aim of which is and reinforce the material surface with those properties which are important in a given application.

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Section: Analysis Of the Influence Of Coatings On The Wear Of Austeni...mentioning

confidence: 98%

Key Determinants for High-Alloyed Cast Irons for Mechanical Engineering

Pacha-Gołębiowska

Piekarska

2022

International Journal of Applied Mechanics and Engineering

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“…In modern internal combustion engines, the piston and piston rings account for most of the frictional losses. The piston-cylinder assembly may account for even about 60% of the total mechanical losses in an internal combustion engine [68]. The tribological operation of the piston-cylinder unit has a significant impact on the efficiency and durability of the internal combustion engine.…”

Section: Biodiesel (3rd Generation)mentioning

confidence: 99%

Method of Evaluation of Materials Wear of Cylinder-Piston Group of Diesel Engines in the Biodiesel Fuel Environment

et al. 2022

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This article concerns the method of material consumption assessment of the cylinder-piston group of diesel engines in the biodiesel environment. The obtained experimental dependences of the wear coefficients on the example of the tribounit cylinder liner and the piston ring can be used to forecast the resource use during operation under specific conditions of the engine and the environment as a whole. The article systematizes the types of biofuels, depending on the type of raw materials from which they were made, taking into account the process and application. The physical and chemical aspects of the catalysts used for biofuels were indicated. The applied experimental methods for tribological wear of the piston-cylinder pair were analyzed. B70 biodiesel was used in the research, i.e., 70% mineral diesel oil and 30% methyl esters of rapeseed oil. Experimental tribotechnical studies of the influence of biofuels on the behavior of various materials have shown that when using this type of fuel, it is necessary to replace the materials from which some parts of the cylinder-piston group are made. To solve this problem, research has been carried out on a specially designed friction machine. The novelty in the article concerns the association, based on the literature, of hydrogen consumption causing material wear in friction contacts. The mechanism of the interaction of various construction materials during such friction has been disclosed.

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“…The consequence of these changes is that engines operate at high thermal and mechanical loads. This is an adverse phenomenon for the piston-crankshaft assembly, particularly for pistons exposed to high temperatures and pressures inside the cylinder [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Simulations geometric structures of the stepped profile bearing surface of the piston

2017

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Abstract. The main node piston-pin-piston rings are most responsible for the formation of mechanical losses. It is advisable to reduce friction losses in the piston-cylinder group lead to an increase in the overall efficiency of the engine and thus reduce the fuel consumption. The method to reduce the area covered by the oil film is a modification of the bearing surface of the piston by adjusting the profile. In this paper the results of simulation for the stepped microgeometry piston bearing surface are presented.

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Reibleistungsmessungen am Befeuerten Dieselmotor

Cited by 26 publications

References 0 publications

Key Determinants for High-Alloyed Cast Irons for Mechanical Engineering

Key Determinants for High-Alloyed Cast Irons for Mechanical Engineering

Method of Evaluation of Materials Wear of Cylinder-Piston Group of Diesel Engines in the Biodiesel Fuel Environment

Simulations geometric structures of the stepped profile bearing surface of the piston

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