Engine and Vehicle Concepts for Methanol-Gasoline Blends

Menrad, Holger; Nierhauve, Bernd

doi:10.4271/831686

Cited by 10 publications

(3 citation statements)

References 1 publication

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“…This may be due to either high combustion pressure pulses being mistaken for knocking, the use of different operating conditions, or non-uniform mixing of fuel and air. It is probable therefore that the true values do not lie at the lower ends of the ranges given, and therefore it can be seen that the alcohols offers the better research octane number and improved motor octane number as shown in Table 1 [6]. This should lead to a possible increase in compression ratio by the order of 2 or 4, but this is not easily achieved since it can be seen that the pre ignition tendency of the alcohols is much worse than the gasoline.…”

Section: Researchmentioning

confidence: 99%

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Evaluation of Methanol Gasoline Fuel Blends on Exhaust Emission of Single Cylinder Spark Ignition Engine

2015

IJEE

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There are great concerns, that the IC Engines are responsible for extreme atmospheric pollution. Therefore, the studies on use of alcohols in 4-Stroke spark ignition (SI) Engines are important. In this study, the properties of the blended fuels were calculated. The effect of methanol-gasoline blends on emissions was investigated experimentally. The emissions were measured with the use of methanol-gasoline blends (M5 and M10) have been compared with the pure gasoline. The test was conducted at the constant speed of 90 km/h and at different wheel powers. From the analysis, it was concluded that when the engine was fuelled on methanol gasoline blends, CO2, CO, HC and NOx vehicular emissions were found to decreased at all wheel powers at 90 km/h. In addition, air-fuel ratio also increased with the increase percentage of methanol in the gasoline.

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Section: Researchmentioning

confidence: 99%

“…Methanol gave an improvement over gasoline in part load brake thermal efficiency which ranged from 22 to 24%. Ignition timing could be retarded and exhaust temperatures were reduced with respect to operation on gasoline, indicating a faster burn rate [6,8,11].…”

Section: The Effects Of Alcohol On Enginesmentioning

confidence: 99%

Evaluation of Methanol Gasoline Fuel Blends on Exhaust Emission of Single Cylinder Spark Ignition Engine

2015

IJEE

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“…Hence, the amount of the air that fills the cylinder decrease and cause an incomplete combustion. It has been researched that when the ethanol amount use increases, the volatility and the latent heat of the fuel also increases [31], hence the volumetric efficiency also increased. Figure 3 (b) shows the brake thermal efficiency (BTE) result.…”

Section: Engine Performancementioning

confidence: 99%

Numerical modeling on homogeneous charge compression ignition combustion engine fueled by diesel-ethanol blends

et al. 2016

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Abstract. This paper investigates the performance and emission characteristics of HCCI engines fueled with oxygenated fuels (ethanol blend). A modeling study was conducted to investigate the impact of ethanol addition on the performance, combustion and emission characteristics of a Homogeneous Charge Compression Ignition (HCCI) engine fueled by diesel. One dimensional simulation was conducted using the renowned commercial software for diesel and its blend fuels with 5% (E5) and 10% ethanol (E10) (in vol.) under full load condition at variable engine speed ranging from 1000 to 2750 rpm with 250 rpm increment. The model was then validated with other researcher's experimental result. Model consists of intake and exhaust systems, cylinder, head, valves and port geometries. Performance tests were conducted for volumetric efficiency, brake engine torque, brake power, brake mean effective pressure, brake specific fuel consumption, and brake thermal efficiency, while exhaust emissions were analyzed for carbon monoxide (CO) and unburned hydrocarbons (HC. The results showed that blending diesel with ethanol increases the volumetric efficiency, brake specific fuel consumption and brake thermal efficiency, while it decreases brake engine torque, brake power and brake mean effective pressure. In term of emission characteristics, the CO emissions concentrations in the engine exhaust decrease significantly with ethanol as additive. But for HC emission, its concentration increase when apply in high engine speed. In conclusion, using Ethanol as fuel additive blend with Diesel operating in HCCI shows a good result in term of performance and emission in low speed but not recommended to use in high speed engine. Ethanol-diesel blends need to researched more to make it commercially useable.

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Theoretical Study on the Kinetics for the Reactions of Heptyl Radicals with Methanol

Zhao

Song

et al. 2018

Chem. Res. Chin. Univ.

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Engine and Vehicle Concepts for Methanol-Gasoline Blends

Cited by 10 publications

References 1 publication

Evaluation of Methanol Gasoline Fuel Blends on Exhaust Emission of Single Cylinder Spark Ignition Engine

Evaluation of Methanol Gasoline Fuel Blends on Exhaust Emission of Single Cylinder Spark Ignition Engine

Numerical modeling on homogeneous charge compression ignition combustion engine fueled by diesel-ethanol blends

Theoretical Study on the Kinetics for the Reactions of Heptyl Radicals with Methanol

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