Wyniki wyszukiwania - BazTech

1

Comparative analysis of construction materials used for fastening elements of six-point safety belts in rally cars

Dziubek Mateusz, Grygier Dominika

Combustion Engines

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2022

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R. 61, nr 4

9--14

EN

Safety belts are one of the most significant elements of car equipment classified as passive safety. This paper provides a comparative material analysis of critical components of a trusted manufacturer's six-point harness used in motorsports racing with commercially available imitation belts. Despite the FIA certification labels, the imitation belts are characterized by extremely poor quality in the selection of materials for components such as the snap hooks and the locking sleeves in the central fastening mechanism, posing a real hazard to unaware belt users.

2

Computational investigation of compression ratio and bore diameter influence on engine performance and knock intensity

Gandyk M., Haller P., Jankowski A.

Journal of KONES

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2018

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Vol. 25, No. 2

129--134

EN

Processes of the combustion in combustion engines depend on cylinder bore and compression ratio. Compression ratio is a ratio of in-cylinder volume when piston is in bottom dead centre to volume when piston is in top dead centre. Theoretical engine efficiency is increasing together with compression ratio. However, in the real engine there are also other phenomena affecting the efficiency of the engine, which could results in lower performance of engine with higher compression ratio. This study presents knock intensity and performance gain in engine speed function of the 0D-1D engine model with different pistons set. Knock intensity is founded by implementing in combustion process knock sub-model based on Douaud and Eyzat induction time correlation using different pistons geometry. Examined engine model is air restricted Formula Student motorcycle engine. Mounted in intake system, air restrictor decreases knock intensity. Therefore, compression ratio could be increased. It was noticed that bigger bore diameter could reduce knock intensity. Researches realized that bigger bore size could cause performance drop at high rpm when flow is chocked. With changing of compression ratio, performance characteristic changes. Growing compression ratio decrease torque on low engine speed and increase on high engine speed. Further characteristic of the engine could be tuned by matching pistons with modified bore size and compression ratio.

3

All-embracing modification of a mass-produced Renault Clio to prepare it for professional rallycross racing

Kutyna Ł., Kielski L.

Archiwum Motoryzacji

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2018

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Vol. 82, nr 4

15--30

EN

Motorsport constitutes an excellent research laboratory for the entire automotive industry and all the related industry branches. Since the dawn of motorization, motor vehicle component systems have been developed and improved. This process will go on and there is no doubt that it will never stop. Engines with rising performance require increasing strength of transmission system components. The more efficient use of the power transmission system requires improvements in the suspension system, which will ensure better vehicle handling, and higher efficiency of brakes, so that the vehicles moving with higher and higher speeds can be stopped more effectively. An increase in the cruising speeds entails a higher accident hazard and this, in turn, requires safer construction of the vehicle body. The best way to develop the modifications is to test them in the difficult conditions of professional motorsports. The solutions engineered for this purpose and proven on such a kind of testing ground are afterwards adapted to mass-produced vehicles and used in everyday vehicle operation. This publication is to present the scope of the work to be done when building a high-performance sports car that must meet the requirements of regulations laid down by FIA (Federation Internationale del'Automobile) for vehicles of this type. The works described in this article were undertaken to modify the construction of a mass-produced Renault Clio car of the second generation in order to adapt it for professional motorsports, chiefly for starts in Polish and international rallycross championships. The modifications of this car intended for rallycross racing consisted in the designing or modernization of its individual parts and component units so that they were compatible with the specificity of this sport and were in conformity with FIA requirements.

4

Modern 3D Technology used for the Evaluation of Motorsports Drivers

Skublewska-Paszkowska M., Łukasik E., Smołka J., Kwiatkowski M.

Applied Computer Science

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2016

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Vol. 12, no 1

17--26

EN

The article presents selected modern 3D technologies (a motion capture system, forceplates) that can be used to examine the biomechanics of motorsports drivers. The aim of this paper is to prove the following thesis:“modern 3D technologies allow for precise and objective biomechanical analysis of motorsports drivers as a complement to psychomotor tests” based on the preliminary research. Three motorsports drivers participated in this study.

5

An application of close range photogrammetry to combustion engine air intake modelling

Gandyk M.

Journal of KONES

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2015

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Vol. 22, No. 2

49--54

EN

Sometimes engine parts geometries in which flow is simulated are hard to define. Engine head ports or other intake parts have complex shape. Here with helps comes modern scanning three-dimensional (3D) technology such as photogrammetry. Thanks to the computer, science development photogrammetry is available for the regular engineer. One of the new, easy, user-friendly software is Autodesk 123D Catch, which takes photography straight from camera card and renders geometry in cloud. It makes engine improvement easiest. Ducts could be tested in virtual reality without destroying to check them on flow benchmark machines or dynamometer. First part of that study describes geometry-scanning process of engine air intake part using Autodesk 123D Catch software. Investigated part is a duct, which connect air filter with intake manifold. That is aftermarket pipe, which is designed to use in motorsport. This intake unit has a controversial shape, which is quite hard to measure. Obtained geometry shows useful accuracy. Second part of article shows investigation of flow in that duct using achieved geometry model. The analysis is done in computational fluid dynamics (CFD) Software Ansys Fluent. In opinion of author intake geometry is not proper. However finally conclusion is that showed process of testing engine ports is easy, useful and possible to done.

6

Metody oceny oddziaływania transportu samochodowego na środowisko

Filipczyk J., Wieszała R.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2003

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z. 50

123-127

PL

W artykule przedstawiono wyniki analizy przydatności stosowanych metod do oceny oddziaływania transportu samochodowego na środowisko przyrodnicze w aspekcie oceny ogólnych kosztów transportu. Przedstawiono problemy z właściwą oceną systemów transportowych wynikające z niedokładności stosowanych metod badawczych.

EN

Analyse in article were introduced the practical methods to option the on natural environment the motor in aspect of opinion of general haulages. The problems were introduced with proper opinion of forwarding systems consequential with inaccuracy of practical investigative methods.