The development of combustion engines for hybrid drive systems

Pielecha, Ireneusz; Cieślik, Wojciech; Borowski, Przemysław; Czajka, Jakub; Bueschke, Wojciech

doi:10.19206/ce-116934

Cited by 9 publications

(1 citation statement)

References 4 publications

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“…the first diesel shunting locomotive powered by hydrogen was presented [7,8]. Other manufacturers offer vehicles with hybrid drives [4,18,26] or electric drives [22,35] for reduced emissions.…”

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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Assessment of parameters of the hybrid drive system in vehicles in urban traffic conditions

Cieślik¹,

Pielecha²,

Szałek³

2015

Combustion Engines

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Continuously increasing share of the hybrid and electric vehicles in the global automotive market justifies the need for detailed analysis of the operational effectiveness of these drive systems. The aim of the study was to assess the operational conditions of the combustion engines and electric motors in hybrid drive systems – full hybrid – of the motor vehicles in urban traffic conditions. Variety of designs of such drive systems is related to the high voltage batteries used and the way of charging them. The road tests were conducted in Warsaw (urban traffic conditions) by recording the operational parameters of three vehicles and their driving systems. The conditions of operation of the combustion engine and electric motors along with the values of their high voltage battery charge level were related to the test routes. The analysis of the relative shares of engine and motor operation time in the total time of vehicle operation in urban traffic conditions was conducted. The scope of operation of the hybrid drive system utilizing only electric propulsion system was determined. The relations between the operational indexes of the hybrid propulsion (combustion engine and electric motor) in real traffic conditions and the charge level of batteries, current speeds and accelerations were shown.

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Indexes of performance of combustion engines in hybrid vehicles during the UDC test

Cieślik

Pielecha

Szałek³

2015

Combustion Engines

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An increased interest in hybrid drive systems allowing reduction of fuel consumption and emissions of harmful substances into the atmosphere, as well as their partial use as zero–emission vehicles promotes the development of these types of drive systems. The market analysis indicates an increased sale of hybrid drives in vehicles, and this means that actions taken towards of reduction of fuel consumption are still valid. The aim of this article is to indicate the indexes of performance of combustion engines in hybrid vehicles during a part of the type-approval driving test. The article analyses Toyota hybrid vehicles with particular attention paid to the parameters of the hybrid drive system and the influence of the charge level of battery on the share of the combustion engine operation in the total time of the vehicle operation. The analysis was carried out for vehicles equipped with the Toyota Hybrid Synergy Drive system working with different types of high voltage battery.

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The development of combustion engines for hybrid drive systems

Cited by 9 publications

References 4 publications

Model of energy consumption by brake discs of rail vehicles

Model of energy consumption by brake discs of rail vehicles

Assessment of parameters of the hybrid drive system in vehicles in urban traffic conditions

Indexes of performance of combustion engines in hybrid vehicles during the UDC test

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