Optimization Problems in Designing Automobiles

Dyakov, Ivan; Prentkovskis, Olegas

doi:10.3846/1648-4142.2008.23.316-322

Cited by 12 publications

(11 citation statements)

References 6 publications

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“…A comprehensive treatment of the relationship between vehicle weight, powertrain efficiency, and total cost of vehicle ownership has also been undertaken in a notable study (Lipman, Delucchi 2006). An effort was made to frame the general optimization problem within the context of a review (Dyakov, Prentkovskis 2008). What is missed in the literature is a comprehensive methodology based on the first-principles for solving the techno-economic problem of deciding how to best implement advanced powertrain and lightweighting technology.…”

Section: Introductionmentioning

confidence: 99%

Optimal Implementation of Lightweighting and Powertrain Effi Ciency Technology in Passengers' Vehicles

et al. 2012

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Improving powertrain efficiency and reducing vehicle weight are two options for reducing vehicle energy use, emissions, and operating cost that often increase the purchase cost of passenger vehicles. Increasing drivetrain efficiency shrinks the potential for reducing energy use by lightweighting and conversely lighter vehicles benefit less from efficiency improvement. This paper describes a methodology for finding the optimum combination of lightweighting and efficiency measures to achieve minimum lifetime vehicle cost. Using representative technology cost assumptions for a mid-sized passenger car, marginal efficiency improvement in the range of 20 to 30% and lightweighting between 200 and 600 kg are optimal, depending strongly on marginal cost curve characteristics. A reduction in the total cost of vehicle ownership of between 18 and 42% is possible for the representative technology implementation scenarios. In the absence of reliable cost data, a general strategy of designing lightweight vehicles with lower powertrain efficiency or else higher-efficiency powertrains which are integrated in heavier vehicles is recommended.

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Section: Introductionmentioning

confidence: 99%

Optimal Implementation of Lightweighting and Powertrain Effi Ciency Technology in Passengers' Vehicles

et al. 2012

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“…Šiame etape numatomos transporto priemonės savybės: saugumas, patogumas, pravažumas, degalų sąnaudos, unifikavimo laipsnis, remontavimo galimybės, patikimumas ir kitos (Karkauskas, Popov 2011;Dyakov, Prentkovskis 2008). Transporto priemonės patikimumo garantijos, už-fiksuotos jos projekte, būna efektyvios tik tuomet, kai transporto priemonė pagaminama tiksliai pagal brėžinį ir numatytą technologiją (Mickūnaitis 2006).…”

Section: Patikimas Automobilis -Kiekvieno Vairuotojo Prioritetasunclassified

Research on Probability for Failures in Vw Cars During Warranty and Post-Warranty Periods / „vw“ Markės Automobilių Gedimų Tikimybės Garantiniu Ir Pogarantiniu Laikotarpiu Tyrimas

Luneckas

Bartulis

2014

Mokslas – Lietuvos Ateitis

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Transportas Transport Engineering2014 © Straipsnio autoriai. Leidėjas VGTU leidykla "Technika". Šis straipsnis yra atvirosios prieigos straipsnis, turintis Kūrybinių bendrijų (Creative Commons) licenciją (CC BY-NC 4.0), kuri leidžia neribotą straipsnio ar jo dalių panaudą su privaloma sąlyga nurodyti autorių ir pirminį šaltinį. Straipsnis ar jo dalys negali būti naudojami komerciniams tikslams. MOKSLAS -LIETUVOS ATEITIS SCIENCE -FUTURE OF LITHUANIA

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“…However, an experimental way cannot be the only technique for investigating all possible combinations of operating parameters due to high costs and time spent for determining the optimal values. Mathematical modeling of a physical system employing numerical methods has become an effective alternative (Bogdevičius and Vitkūnas 2016;Andrikaitis and Fedaravičius 2014;Najafi and Ahmadzadeh 2014;Skrickij et al 2016;Spruogis et al 2015;Dyakov and Prentkovskis 2008;Moezi et al 2015;Bogdevičius et al 2015;Dönmez Demir et al 2015;Khatir et al 2014;Ahmadi et al 2015;Zhang et al 2015;Simonović 2015;Allali et al 2015). The paper is aimed on proposing mathematical model for the pneumatic damping system.…”

Section: Introductionmentioning

confidence: 96%

Behavior and Optimization of Pneumatic Damping System

Bogdevičius

Prentkovskis

Junevičius

et al. 2016

Iran. J. Sci. Technol. Trans. Mech. Eng.

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Vibration isolation is one of the most important research areas. Considerable research has been conducted in this area and on ways to reduce vibration. Pneumatic damping system with four gas chambers, which are connected by throttles in valves and permanent magnets, is considered. The mathematical model of pneumatic system is presented. The following factors are evaluated in this mathematical model: forces of pressure, friction, magnetic and contact forces between system bodies. The sensitive analysis of system parameters on which the quality of vibration isolation depends is done and critical parameters are identified. The optimization problem of pneumatic damping system with twelve parameters is presented. The frequency of external force is equal to 10 Hz. The objective function is the amplitude of the relative velocity of the fourth mass when each system parameter can be changed within an allowable interval. The objective function is minimized by the frequency range from 0 to 20 Hz. After optimization process, the value of objective function is decreased approximately three times and optimal system parameters are obtained.

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Optimization Problems in Designing Automobiles

Cited by 12 publications

References 6 publications

Optimal Implementation of Lightweighting and Powertrain Effi Ciency Technology in Passengers' Vehicles

Optimal Implementation of Lightweighting and Powertrain Effi Ciency Technology in Passengers' Vehicles

Research on Probability for Failures in Vw Cars During Warranty and Post-Warranty Periods / „vw“ Markės Automobilių Gedimų Tikimybės Garantiniu Ir Pogarantiniu Laikotarpiu Tyrimas

Behavior and Optimization of Pneumatic Damping System

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