Innovative Methodology for Decreasing Mechanical Losses in Vehicles

Dobreva, A.; Dobrev, Vasko

doi:10.1007/978-3-319-94409-8_28

Cited by 5 publications

(7 citation statements)

References 6 publications

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“…Improved and advanced procedures for evaluation and comparative analysis of different design solutions for a certain problem, involving several main stages, have been described in details in [16][17][18]. Methodology suggested in [18] includes: analysis of elements in the power flow of the vehicle and the possibilities to reduce mechanical losses in these components; new and modified generally valid assessment criteria; a new approach for calculating the cardan drive in order to reduce its internal dynamic load; a method for calculating internal meshing with increased efficiency; specific criteria for the analysis and evaluation of design solutions that have a relatively equal degree of significance.…”

Section: Methods and Prerequisites For Solving The Problemmentioning

confidence: 99%

Design of Advanced Power Transmissions

Pavlov,

Dobreva

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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During the last five years, significant progress has been made in the development of automotive transmissions, and especially in increasing the gear ratios and improving the efficiency. With the help of software products and programs, new transmission design schemes have been constantly developed, which are characterized by improved operational parameters. Different optimization methods have been considered about the implementations of main objectives: power transmissions’ component design and efficiency improvement. Conclusions have been made concerning the opportunities for reducing the energy consumption by engineering tools inside the power transmissions.

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Section: Methods and Prerequisites For Solving The Problemmentioning

confidence: 99%

Design of Advanced Power Transmissions

Pavlov,

Dobreva

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The most significant group of criteria are the tribological parameters: coefficient of friction and meshing efficiency in worm gearing. The friction coefficient is calculated in accordance with [17] and [18]. The meshing efficiency is determined according to [1] and [6].…”

Section: Methodsmentioning

confidence: 99%

“…The author's team completed successfully some research tasks in the field of energy efficiency in the area of gear drives and machine science. The results of these investigations are described in details in the following publications: [15][16][17][18][19]. Gear losses cause a significant proportion of the overall power loss.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Research of gear drives

Dobreva

Dobrev

Mollova

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Worm gear drives possess important advantages such as: compact design, high power density due to a high gear ratio within a single gear stage. However, these gear drives often show high sliding speeds within the tooth contact, resulting in relative low efficiency coefficient in the meshing. Therefore, an exact calculation regarding efficiency in the meshing and load capacity is important during the beginning stage of the machine design process. Currently, no calculation method is available to analyze worm gears considering efficiency in meshing and contact strength. The objective of the research implemented was to analyze extensively the meshing efficiency and the contact stress behavior of various geometry designs of worm gears drives. Optimization research has been implemented considering the criteria mentioned. All calculations and theoretical analysis have been implemented for different center distances, different modules, gear ratios and rotational speeds of the worm shaft. Simulation results are shown and discussed. Important conclusions and recommendations are suggested.

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“…The authors' team and other scientists from the University of Ruse have successfully completed some investigation tasks in the field of energy efficiency of drive systems and transmissions. The results of these studies are presented in detail in the following publications: [8][9][10][11][12].…”

Section: Prerequisites For Research Implementationmentioning

confidence: 99%

Improving load capacity parameters of worm gears

Mollova

Dobreva²

2022

MATEC Web Conf.

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Worm gear drives possess several advantages in comparison to other types of transmissions. Some of the most important advantages are: high gear ratio, compact design and vibration damping. Therefore, the author’s team focused within the framework of research presented on creating opportunities to improve another very important characteristic feature of worm gears: the load capacity. During the process of investigation, optimization procedures have been created aiming to improve the load capacity parameters of worm gear trains. Different functional parameters and certain geometry parameters have been taken into account such as rotational frequency of the worm shaft, gear ratio, module and geometry dimensions of the worm gear set. The research methodology applied includes several stages. The research results obtained are presented and discussed. Conclusions and recommendations are made.

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Innovative Methodology for Decreasing Mechanical Losses in Vehicles

Cited by 5 publications

References 6 publications

Design of Advanced Power Transmissions

Design of Advanced Power Transmissions

Research of gear drives

Improving load capacity parameters of worm gears

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