Theoretical and Experimental Investigation of the Performance of an Atkinson Cycle Engine

Çınar, Can; Özdemir, Abdullah Onur; Gülcan, Halil Erdi; Topgül, Tolga

doi:10.1007/s13369-021-05595-7

Cited by 7 publications

(5 citation statements)

References 35 publications

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“…Additionally, the valve lift, especially during the intake phase, can contribute to the formation of turbulent airflow inside the cylinder [29,50]. In cam profile design, classical spline and circular spring curve methods are commonly used techniques [51]. However, in a study conducted by Cinar and Uyumaz [30] on cam design and manufacturing, it was reported that cam profiles designed using classical spline functions lose the tappet contact feature and experience excessive increases in acceleration and rebound values as the valve lift increases.…”

Section: Camshaft Profile Designmentioning

confidence: 99%

Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on mechanical vibration and noise emissions

GÜLCAN,

GÜLTEKİN,

CİNİVİZ

2023

International Journal of Automotive Science and Technology

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In this study, the design and manufacturing of cam profiles with different valve lifts were carried out using the geometric spring curve method for a single-cylinder, four-stroke common rail diesel engine. Subsequently, the impact of the designed cam profiles on vi-bration and noise emissions in conventional diesel combustion was examined. The effects of the cam profiles obtained using the circular spring curve method and fitted with Fourier series on the tappet's speed, acceleration, and leap were examined, and then the cam pro-files to be manufactured were determined. Experimental tests were conducted on vibra-tion and noise emissions using the manufactured cam profiles with pure diesel fuel at five different engine loads and a constant engine speed. When the results are examined, in-creasing the valve lift amount compared to the original cam resulted in an approximate 24% increase in vibration level, while decreasing the valve lift amount reduced the vibra-tion level by approximately 20%. the effect of cam profile modification on average noise emissions was quite evident.

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Section: Camshaft Profile Designmentioning

confidence: 99%

Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on mechanical vibration and noise emissions

GÜLCAN,

GÜLTEKİN,

CİNİVİZ

2023

International Journal of Automotive Science and Technology

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“…Due to rising energy demands, and strict emissions standards, the focus on environmental preservation and energy conservation has become increasingly significant in the present era [1]. The annual escalation in vehicle quantities leads to substantial energy consumption and the release of detrimental exhaust emissions.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the environmental and cost impact of a small diesel engine with ethanol-diesel and isopropanol-diesel fuel at varying engine loads and speeds

Gülcan¹,

Gültekin²,

Ciniviz³

2023

ICPIS

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Nowadays, alcohol additives such as ethanol and isopropanol are used to minimize emissionsresulting from combustion in diesel engines. While these blends contribute to reducing emission values, itis also important to consider their environmental and cost implications. Therefore, this experimental studyfocuses on the emission characteristics and the environmental and cost impact of alcohol additives in dieselfuel. The experiments were conducted at low and medium engine torques (3 Nm and 6 Nm) and variousengine speeds (1000, 1500, 2000, and 2500 rpm). Additionally, three different test fuels were used in theexperiments, including standard diesel fuel, as well as diesel fuel with volumetric additions of 7% ethanol(E7) and 7% isopropanol (IP7) alcohol additives. The emission values of all test fuels were measured, andan analysis of environmental influence and cost was conducted. Upon examining the results, it is evidentthat the addition of alcohol to diesel fuel significantly increased the environmental influence and cost atlow engine speeds, while it led to a decrease at high engine speeds. Furthermore, the increase in engineload contributed to emission reduction due to higher combustion temperatures, thereby contributing to adecrease in both cost and environmental influence.

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“…Researchers focus on alcohol, biofuels, and renewable biomass to reduce the use of fossil fuels and create a cleaner environment [2][3][4]. In addition, some studies are currently ongoing on the internal combustion engine in order to increase performance and reduce exhaust emissions and specific fuel consumption [5,6]. Fuel injection strategy, dual fuel mode, fuel mixtures, variable valve timing, variable compression ratio, combustion chamber geometry, and alternative engine cycles (Atkinson and miller) are studies on internal combustion engines [7].…”

Section: Introductionmentioning

confidence: 99%

The Investigation of Bioethanol as a Fuel in an SI Engine with Fuel and Ignition Systems Converted to Electronic Control

SAMANCI

Ciniviz

2022

International Journal of Automotive Science and Technology

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In this study; a four-stroke, air-cooled, spark-ignition engine was used. It’s aimed to improve the performance and emissions by renewing the existing ignition and fuel system of the engine in a way that can be controlled via computer. Classical ignition system was modified with an electronic ignition system and a computer-controlled system was established by using an injector instead of the carburetor. Gasoline and bioethanol fuels were compared with the original and updated version of the engine by conducting various experiments. In these experiments, engine power and torque, specific fuel consumption, thermal efficiency, exhaust emissions and combustion analysis results were examined. When the results obtained are evaluated; with the use of electronically controlled fuel and ignition system in engine torque and power, an increase of 11.58% in maximum torque obtained from gasoline and an increase of 14.4% in average power was observed compared to the standard system. Specific fuel consumption decreased by 18.32% for gasoline and 26.95% for bioethanol at full load. At full load, thermal efficiency was 22.43% for gasoline, 36.9% for bioeth-anol and in-cylinder max. pressure was a 4% increase for gasoline and an 8% in-crease for bioethanol. In the emission values, at full load, the CO value decreased by 6.2% for gasoline, 20% for bioethanol and HC value decreased by 3.8% for gasoline and 7.5% for bioethanol. CO2, NOx and O2 values increased by 4.1%, 14.9%, 0.7% for gasoline and 0.7%, 5.6%, 0.4% for bioethanol.

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Theoretical and Experimental Investigation of the Performance of an Atkinson Cycle Engine

Cited by 7 publications

References 35 publications

Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on mechanical vibration and noise emissions

Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on mechanical vibration and noise emissions

Evaluation of the environmental and cost impact of a small diesel engine with ethanol-diesel and isopropanol-diesel fuel at varying engine loads and speeds

The Investigation of Bioethanol as a Fuel in an SI Engine with Fuel and Ignition Systems Converted to Electronic Control

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