Fuel consumption and CO&lt;sub&gt;2&lt;/sub&gt; emission analysis of hybrid and conventional vehicles in urban conditions

Skuza, Adriana; Szumska, Emilia; Jurecki, Rafał

doi:10.19206/ce-169569

Cited by 2 publications

(1 citation statement)

References 43 publications

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“…Work has been carried out for several years on modeling the consumption of solid friction products described in [24], and the entry into force of the new EURO 7 standard will force work to be carried out in the field of gas emissions from the braking system [36]. It is possible to recover part of the energy from the braking process by eliminating friction braking [31]. Currently, this occurs in the case of electric or diesel locomotives with electric transmission as well as with diesel or electric multiple units (EMU), including metro vehicles and trams (light rail vehicles) [34].…”

Section: Introductionmentioning

confidence: 99%

Model of energy consumption by brake discs of rail vehicles

Sawczuk,

Jüngst,

Kaczmarek

2024

Rail Vehicles/Pojazdy Szynowe

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The aim of the article is to present a computational model to determine the losses generated by the brake discs of rail vehicles. The energy consumption of the disc (energy losses) is divided into inertia losses and fan losses. The article is preceded by a review of the design solutions of brake discs of rail vehicles in terms of their ventilation and cooling after braking. Particular attention was paid to three types of brake disc designs with ventilation blades, bars and other shapes of ventilation bridges, and how the ventilation of these discs affects energy losses. On the one hand, forced ventilation of brake discs shortens the cooling time after intensive braking, on the other hand, it causes energy losses due to forced ventilation when the brakes are not used. The article presents the state of knowledge regarding the cooling efficiency of brake discs as a result of forced ventilation and presents a method for calculating the energy consumption generated by the brake disc in relation to the rotational speed. The energy losses were divided in the article into inertia losses due to the rotating mass and losses on the fan, in which the energy necessary for the rotation of the brake disc was determined from the method of calculating centrifugal fans with known geometric dimensions.

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Section: Introductionmentioning

confidence: 99%

Model of energy consumption by brake discs of rail vehicles

Sawczuk,

Jüngst,

Kaczmarek

2024

Rail Vehicles/Pojazdy Szynowe

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Evaluation of the effects of the application of Ti−C:H DLC coatings obtained by PVD techniques in the kinematic pairs of internal combustion engines and powertrain systems.

Murzyński

2024

Combustion Engines

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The article attempts to analyze the possible effects of using Ti−C:H DLC carbon coatings produced by pulsed magnetron sputtering (PVD) to reduce friction coefficient and wear in kinematic pairs found in internal combustion engines and powertrain systems used in automotive vehicles. The aim of such action is primarily to reduce internal losses in the aforementioned units. The coatings were deposited on heat-treated bearing steel 100Cr6, examined using a scanning electron microscope FEI Quanta 200 Mark II with the chemical analyzer EDS EDAX Genesis XM 2i, tribotester T−01M examining the friction coefficient in the ball-disc correlation and Hommel Werke T8000 profilometers, additionally, in order to check the coating thickness, studies were carried out using the Calotest method. The results obtained indicate that both the friction coefficient and wear are drastically reduced in relation to samples on which no DLC coatings were applied.

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Fuel consumption and CO<sub>2</sub> emission analysis of hybrid and conventional vehicles in urban conditions

Cited by 2 publications

References 43 publications

Model of energy consumption by brake discs of rail vehicles

Model of energy consumption by brake discs of rail vehicles

Evaluation of the effects of the application of Ti−C:H DLC coatings obtained by PVD techniques in the kinematic pairs of internal combustion engines and powertrain systems.

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