Effects of engine misfire on regulated, unregulated emissions from a methanol-fueled vehicle and its ozone forming potential

Wang, Xin; Ge, Yunshan; Zhang, Chuanzhen; Tan, Jianwei; Hao, Lijun; Liu, Jia; Gong, Huiming

doi:10.1016/j.apenergy.2016.05.092

Cited by 45 publications

(3 citation statements)

References 46 publications

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“…Methanol can be produced from a wide range of renewable sources such as gasification of wood, agricultural by-products and urban waste, in addition to fossil fuels based feedstock (coal and natural gas). For the purposes of energy sustainability and low carbon, methanol has been widely used in spark ignition engines in some countries like China and Iceland, as a single component and blend with gasoline [2]. Due to the high octane rating, high latent heat and low combustion temperatures, the power and efficiency is significantly higher for methanol (and ethanol) compared to gasoline.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of water effects on the laminar burning velocity of methanol

Liang

2018

Biomass and Bioenergy

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Using light alcohols in spark-ignition engines can improve energy security, engine performance and pollutant emissions. Methanol has gained popularity due to its ease in production compared to ethanol. Methanol could absorb water easily. In the present work, the adiabatic laminar burning velocity of methanol containing water is investigated both experimentally and numerically. Numerical simulations using CHEMKIN-PRO were undertaken to predict the burning velocities of six mixtures with different water volume fractions (up to 0.6) from the latest San Diego chemical-kinetic mechanism. The burning velocities of three mixtures with different water volume fractions (up to 0.4) were measured using a constant volume vessel and a Schlieren imaging system for a wide range of temperature (380-450 K), pressure (100-400 kPa) and equivalence ratio (0.7-1.4). Results showed a decrease in burning velocity with pressure and an increase with temperature. Water as a diluent led to reduction of the burning velocity. The chemical-kinetic mechanism over predicts the burning velocity.

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Section: Introductionmentioning

confidence: 99%

Numerical study of water effects on the laminar burning velocity of methanol

Liang

2018

Biomass and Bioenergy

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“…Since most urban areas are in the VOC control zone for ozone generation [ 29 ], MIR has strong applicability in VOC control areas. The SR value can be used to compare and analyze the ozone formation potential of the unit emission of VOCs from pollution sources without considering the emission intensity of VOCs, which is suitable for estimating the formation of ozone in large areas [ 30 , 31 , 32 ]. It has important reference significance for the measurement of ozone generation per unit mass of VOC emissions.…”

Section: Methodsmentioning

confidence: 99%

Study on the Fingerprint and Atmospheric Activity of Volatile Organic Compounds from Typical Industrial Emissions

Chen

Cai

et al. 2023

IJERPH

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China is prone to severe surface ozone pollution in summer, so it is very important to understand the source of volatile organic compounds (VOCs) to control ozone formation. In this work, the emission characteristics of 91 VOC components from the plastic products industry, packaging and printing industries, printing ink industry, furniture manufacturing and vehicle manufacturing industries were studied. The results show that there are significant differences between these sources, and for the plastic products industry, alkanes (48%) are the most abundant VOCs. The main emission species in the packaging and printing industry are OVOCs (36%) and alkanes (34%). The proportion of OVOCs in the printing ink (73%) and furniture manufacturing industries (49%) is dominated by VOC emissions; aromatic hydrocarbons (33%), alkanes (33%), and OVOCs (17%) are the main emission species in the vehicle manufacturing industry. At the same time, the ozone generation potential (OFP) and secondary organic aerosol formation potential (SOA) of anthropogenic VOC emissions were evaluated, and the top 10 contributors to OFP and SOA were identified. Toluene, o-xylene, and m-xylene had a significant tendency to form OFP or SOA. Then, a health risk assessment of VOC components was carried out. These data can supplement the existing VOC emission characteristics of anthropogenic emissions, thus enriching the research progress of VOC emission sources.

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“…Analyses of this type require researchers to optimize sample collection and determine an appropriate analytical method. A literature review showed that scientists use a number of available methods of collecting research material and chromatographic methods, i.e., GC-MS [6][7][8][9][10][11][12][13][14], LC-MS [15], TD-GC-MS [16] with sampling into sorbent tubes [14], feeding whole air or raw exhaust gases into Tedlar bags [9,[17][18][19][20][21][22][23], microextraction into the solid phase [24], or the flame ionization method [25][26][27]. In the work of other research centers [22,23], volatile organic compounds were collected from two-wheeled vehicles into a set of Tedlar bags.…”

Section: Introductionmentioning

confidence: 99%

Chromatographic Analysis of the Chemical Composition of Exhaust Gas Samples from Urban Two-Wheeled Vehicles

Szymlet,

Rymaniak,

Kurc

2024

Energies

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The subject of the article was the chemical analysis of gasoline and exhaust gas samples taken from an urban two-wheeled vehicle. The main aim of the work was to identify chemical compounds emitted by a group of urban two-wheeled vehicles depending on the engine’s operating parameters. First, engine operating parameters and driving parameters of three urban two-wheeled vehicles were measured in real operating conditions. Based on the averaged results, engine operating points were determined for exhaust gas samples that were collected into Tedlar bags. The exhaust gas composition of individual chemical substances obtained in the chromatographic separation process were subjected to a detailed analysis relating the engine operating point with their emission rate, with each individual component being assessed in terms of its impact on human health. The obtained qualitative analysis results indicated the presence of alkenes, alkanes, aliphatic aldehydes, and aromatic and cyclic hydrocarbons (cycloalkanes) in the tested samples. The experiments provided a variety of conclusions relating to the operating parameters of a two-wheeler engine. Qualitative assessment of exhaust samples showed that a two-wheeled vehicle was characterized by the most varying composition of BTX aromatic hydrocarbons derivatives, which are particularly dangerous to human health and life. Therefore, the authors suggest that in the future, approval procedures regarding toxic emissions should be extended to include chromatographic tests. The presented results are an extension of previous studies on toxic emissions from urban two-wheeled vehicles in real operating conditions that were published in other journals.

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Effects of engine misfire on regulated, unregulated emissions from a methanol-fueled vehicle and its ozone forming potential

Cited by 45 publications

References 46 publications

Numerical study of water effects on the laminar burning velocity of methanol

Numerical study of water effects on the laminar burning velocity of methanol

Study on the Fingerprint and Atmospheric Activity of Volatile Organic Compounds from Typical Industrial Emissions

Chromatographic Analysis of the Chemical Composition of Exhaust Gas Samples from Urban Two-Wheeled Vehicles

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