Effects of intake air temperature on SI engine emissions during a cold start

Ni, Pei; Wang, Xiangli; Wei, Shengli

doi:10.1080/14786451.2011.622764

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…A moderate cold-start effect ranging from 34 to 80% was also found for the 16 US EPA PAHs under cold-start conditions. This is in accordance with the literature. , …”

Section: Results and Discussionsupporting

confidence: 94%

“…This is in accordance with the literature. 35,36 Figure 4 (middle) displays correlation diagrams of the observed emission reduction (%) of individual PAHs and their boiling point (°C) when comparing E10 (left) and E85 (right) with E0 data. Despite considerable scatter, it seems that the percentage of PAH reduction obtained increases with ring number (size) and boiling point.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Bioethanol Blending Reduces Nanoparticle, PAH, and Alkyl- and Nitro-PAH Emissions and the Genotoxic Potential of Exhaust from a Gasoline Direct Injection Flex-Fuel Vehicle

Muñoz¹,

Heeb²,

Haag³

et al. 2016

Environ. Sci. Technol.

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Bioethanol as an alternative fuel is widely used as a substitute for gasoline and also in gasoline direct injection (GDI) vehicles, which are quickly replacing traditional port-fuel injection (PFI) vehicles. Better fuel efficiency and increased engine power are reported advantages of GDI vehicles. However, increased emissions of soot-like nanoparticles are also associated with GDI technology with yet unknown health impacts. In this study, we compare emissions of a flex-fuel Euro-5 GDI vehicle operated with gasoline (E0) and two ethanol/gasoline blends (E10 and E85) under transient and steady driving conditions and report effects on particle, polycyclic aromatic hydrocarbon (PAH), and alkyl- and nitro-PAH emissions and assess their genotoxic potential. Particle number emissions when operating the vehicle in the hWLTC (hot started worldwide harmonized light-duty vehicle test cycle) with E10 and E85 were lowered by 97 and 96% compared with that of E0. CO emissions dropped by 81 and 87%, while CO emissions were reduced by 13 and 17%. Emissions of selected PAHs were lowered by 67-96% with E10 and by 82-96% with E85, and the genotoxic potentials dropped by 72 and 83%, respectively. Ethanol blending appears to reduce genotoxic emissions on this specific flex-fuel GDI vehicle; however, other GDI vehicle types should be analyzed.

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“…A moderate cold-start effect ranging from 34 to 80% was also found for the 16 US EPA PAHs under cold-start conditions. This is in accordance with the literature. , …”

Section: Results and Discussionsupporting

confidence: 94%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Bioethanol Blending Reduces Nanoparticle, PAH, and Alkyl- and Nitro-PAH Emissions and the Genotoxic Potential of Exhaust from a Gasoline Direct Injection Flex-Fuel Vehicle

Muñoz¹,

Heeb²,

Haag³

et al. 2016

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Even though, most of the conventional designs utilized are using air or water as coolant medium [18]. Peiyong et al [19]; they studied the influence of CAC on engine performance due to ambient low temperature, presenting a significant improvement in engine emission reduction and performance. The results introduced an idea about the importunacy of IHE.…”

Section: Introductionmentioning

confidence: 99%

Development of evaporative intercooler heat exchanger for vehicle charge air enhancement using CFD simulation

Sharif

Hairuddin

As'ary

et al. 2019

JMES

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Nowadays, the concern of vehicle manufacturers towards improving engine performance, reducing fuel consumption and exhaust emissions that can cause the pollution of the atmosphere, concerns of strict emission pollution control regulations. Intercooler heat exchanger devices are used for engine charge air temperature improving for engine performance and emissions reduction. This paper introduces a new add-on technology of intercooler heat exchanger- (IHE) developed for utilizing in intake charge air density enhancement in engine combustion for better performance. Presenting a challenge in contributing a framework process for geometry designing development procedure for accurate and reliable scale design size of an air-vapour gas shell-and-tube IHE type, used refrigerant coolant medium. The process presents effective IHE in design time consumption, accurate in scale with higher performance and reliability operation in all environment weather due to reversibility system. A selected design geometry of 60 bunches of tubes with 7.53 mm inner diameter and 150 mm long placed. Effectiveness and design parameter geometry calculation are conditions of the IHE dependent relations of the shell size to tube length in condition of engine space availability control. Pressure drop and cooling capacity of IHE configuration design are proportional to the availability of design space or pressure drop control by the engine. Numerical and simulation results expressed a significant ability of IHE of 2–13 kW cooling load and process applicability for qualified design geometry configuration for selected IHE type. The developments present significant geometry flexibility design with the ability of cooling load or heating effect if reversible system, which offered multipurpose use in widely all vehicle types.

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Effects of meteorological parameters and fuel composition on the air pollution production from motor vehicles

Heydarzadeh

Jafari

Karimi

2022

Environ Monit Assess

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Effects of intake air temperature on SI engine emissions during a cold start

Cited by 10 publications

References 16 publications

Bioethanol Blending Reduces Nanoparticle, PAH, and Alkyl- and Nitro-PAH Emissions and the Genotoxic Potential of Exhaust from a Gasoline Direct Injection Flex-Fuel Vehicle

Bioethanol Blending Reduces Nanoparticle, PAH, and Alkyl- and Nitro-PAH Emissions and the Genotoxic Potential of Exhaust from a Gasoline Direct Injection Flex-Fuel Vehicle

Development of evaporative intercooler heat exchanger for vehicle charge air enhancement using CFD simulation

Effects of meteorological parameters and fuel composition on the air pollution production from motor vehicles

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