Experimental study on the effects of injection parameters and exhaust gas recirculation on combustion, emission and performance of Atkinson cycle gasoline direct-injection engine

Liu, Qi; Tao, Guo; Fu, Jianqin; Dai, H. L.; Liu, Jingping

doi:10.1016/j.energy.2021.121784

Cited by 10 publications

(5 citation statements)

References 47 publications

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“…Too high of injection pressure can lead to wetting of the piston and cylinder, which is indirectly seen in the studies of Liu et al [168], where the CO emission increases by about 10% when the pressure increases from 30 MPa to 35 MPa. The opposite phenomenon applies to NO x emissions, where the highest emission occurs in the range of 20-30 MPa, while, at the pressure of 35 MPa, the emission is much lower.…”

Section: Engine Operating Parametersmentioning

confidence: 88%

“…The study of the impact of engine parameters on emissions was carried out by, among others, Liu et al [168] analysing a three-cylinder engine operating in the Atkinson cycle. The increase in fuel-injection pressure in the range of 5 to 30 MPa with the ignition in the 340 • CA (crank angle) position increases the emission of NO x and hydrocarbons and at the same time reduces the emission of carbon monoxide.…”

Section: Engine Operating Parametersmentioning

confidence: 99%

“…The exhaust-gas recirculation system is used in internal combustion engines to reduce the emission of harmful exhaust components, mainly NO x [78,168,169]. It works by reintroducing part of the exhaust gas into the engine's intake system via an exhaust-gas recirculation valve.…”

Section: Exhaust-gas Recirculation and Combustion Airmentioning

confidence: 99%

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Emissions from Light-Duty Vehicles—From Statistics to Emission Regulations and Vehicle Testing in the European Union

Pacura,

Szramowiat-Sala,

Gołaś

2023

Energies

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The article offers a comprehensive examination of vehicle emissions, with a specific focus on the European Union’s automotive industry. Its main goal is to provide an in-depth analysis of the factors influencing the emission of microcontaminants from light-duty vehicles and the challenges associated with their removal via exhaust aftertreatment systems. It presents statistical insights into the automotive sector and explores the relationships between vehicle categories, fuel types, and the emission of regulated and nonregulated pollutants, as well as relevant legal regulations such as the European Emission Standard. The article delves into the characteristics of vehicle exhaust, compares exhaust-gas aftertreatment systems, and introduces factors affecting emissions from gasoline engines, including downsizing, fuel composition, and engine operating parameters. It also considers the impact of driving style, start–stop systems, and related factors. Concluding, the article offers an overview of vehicle-testing procedures, including emission tests on dynamometer chassis and real driving emissions. With the growing global vehicle population and international environmental regulations, a focus on solid particles containing microcontaminants is paramount, as they pose significant risks to health and the environment. In summary, this article provides valuable insights into vehicle emissions, significantly contributing to our understanding of this crucial environmental issue.

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Section: Engine Operating Parametersmentioning

confidence: 88%

Section: Engine Operating Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Emissions from Light-Duty Vehicles—From Statistics to Emission Regulations and Vehicle Testing in the European Union

Pacura,

Szramowiat-Sala,

Gołaś

2023

Energies

View full text Add to dashboard Cite

show abstract

“…Accordingly, it was observed that injection pressure had little effect on engine performance, but had a large effect on emissions. Injection timing was observed to have a significant impact on both performance and emissions [28]. In the study by Cinar et al, an Otto cycle engine was converted to an Atkinson cycle engine using the method of LIVC and increasing the compression ratio.…”

Section: Introductionmentioning

confidence: 99%

“…In experimental studies, basic performance parameters were investigated depending on compression ratio and intake valve timing [29]. Liu et al studied the effect of injection parameters of an Atkinson cycle gasoline engine on emission performance [30]. Some scholars proposed the Genetic Algorithm (GA) for the performance optimizations of heat engines.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Realistic Performance Analysis of Modern Atkinson Cycle

Özdemir

UYSAL>

MENKÜÇ>

et al. 2022

International Journal of Automotive Science and Technology

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In this study, a quasi-realistic thermodynamic analysis was performed to investigate the effects of design and operating parameters on the performance of a single-cylinder modern Atkinson cycle engine. Fortran was used for all calculations. It was assumed that the fuel-air mixture was used as the working fluid, and iso-octane was used as the fuel. The Wiebe function was used for the combustion process and it was assumed that the specific heat of the working fluid varies with temperature. In the calculations, heat transfer loss, combustion efficiency, mechanical friction, and pumping losses were taken into account. In the analysis, the closing of the intake valve, equivalence ratio, geometric compression ratio, and the initial conditions of the intake proses were used as independent variables. The effects of these variables on brake mean effective pressure, effective power, specific fuel consumption, and thermal efficiency were investigated. Increasing the inlet pressure, increasing the geometric compression ratio, and delaying the closing of the intake valve increased the mean effective pressure, thermal efficiency, engine output power, and torque. The increase in the inlet temperature adversely affected the engine performance and the specific fuel consumption increased. Engine performance parameters worsened when the equivalence ratio fell below 0.8 and rose above 0.9.

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Multi methods for combustion instability analysis of Atkinson cycle engine based on time series analysis

Xie

Sun

et al. 2023

Applied Thermal Engineering

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Experimental study on the effects of injection parameters and exhaust gas recirculation on combustion, emission and performance of Atkinson cycle gasoline direct-injection engine

Cited by 10 publications

References 47 publications

Emissions from Light-Duty Vehicles—From Statistics to Emission Regulations and Vehicle Testing in the European Union

Emissions from Light-Duty Vehicles—From Statistics to Emission Regulations and Vehicle Testing in the European Union

Quasi-Realistic Performance Analysis of Modern Atkinson Cycle

Multi methods for combustion instability analysis of Atkinson cycle engine based on time series analysis

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