Toxicity Parameters of Exhaust Gases of Diesel Engine Running on Mixed Composition Biofuels

2015 ◽  
Vol 4 (5) ◽  
pp. 15-28
Author(s):  
Девянин ◽  
S. Devyanin ◽  
Марков ◽  
V. Markov ◽  
Неверова ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Experimental Research ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Optimal Composition ◽  
Mixed Composition ◽  
Exhaust Gases ◽  
Method Optimization ◽  
Ecological Parameters

The article displays advantages of using multicomponent mixed biofuels for diesel engines, i.e. mixtures of oil diesel fuel and rapeseed oil, rapeseed oil methyl ester, gasoline. The results of experimental research on a D-245.12C type automotive diesel engine running on these fuels are presented. A method of determining the optimal composition of multicomponent biofuels is proposed. Using this method optimization calculations of the fuel compositions are made. It is demonstrated that among tested biofuels the mixture of 80% oil diesel fuel, 10% of rapeseed oil and 10% of gasoline possesses the superior ecological parameters.

scholarly journals Optimization of Mixed Biofuels Composition for Diesel Engines

10.12737/6632 ◽  
2014 ◽  
Vol 3 (6) ◽  
pp. 19-30 ◽  
Author(s):  
Сивачев ◽  
V. Sivachev ◽  
Маркова ◽  
V. Markova ◽  
Марков ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
Rotation Speed ◽  
Fuel Composition ◽  
Optimal Composition ◽  
Mixed Fuel ◽  
Ecological Characteristics

The advantages of vegetable oil-based biofuels using in diesel engines have been demonstrated. Methods for determining of optimal composition for mixed fuels containing petroleum diesel fuel and methyl ester of rapeseed oil have been proposed. Optimization calculations of such mixed fuel composition for a type 245.12С diesel engine have been carried out using the proposed methods. It has been shown that a mixture containing 60 % of petroleum diesel fuel and 40 % of methyl ester of rapeseed oil has the best ecological characteristics among the researched mixed biofuels. Even better ecological characteristics are reached when such mixture’s ingredients are regulated according to changes of the engine’s shaft rotation speed and load.

Optimization of mixed biofuel composition for diesel engine

2021 ◽  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Alternative Fuels ◽  
Operating Mode ◽  
Promising Alternative ◽  
Motor Fuels ◽  
Engine Combustion ◽  
Basic Characteristics

Biofuels derived from vegetable oils are known to be promising alternative fuels for diesel engines. The possibility of using mixtures of petroleum diesel fuel with rapeseed oil and rapeseed oil methyl ester as environmentally friendly motor fuels is considered. The practicability of changing the composition of these mixtures in accordance with the engine operating mode is shown. A technique for multicriteria optimization of the composition of such mixed biofuels is suggested. The basic characteristics of the optimal composition of these mixed biofuels are calculated. A device for regulating fuel’s composition is proposed. The basic characteristic of regulation of the blended biofuel composition realized by the device is presented. Keywords diesel engine; combustion chamber; oil diesel fuel; rapeseed oil; rapeseed oil methyl ester; biofuel mixture; ecological characteristics; exhaust gases toxicity

USE OF NORTHERN ECOTYPE SOYBEANS FOR BIOFUEL PRODUCTION

2020 ◽  
pp. 22-30
Author(s):  
SERGEY N. DEVYANIN ◽  
◽  
VLADIMIR A. MARKOV ◽  
ALEKSANDR G. LEVSHIN ◽  
TAMARA P. KOBOZEVA ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Soybean Oil ◽  
Diesel Fuel ◽  
Experimental Studies ◽  
Motor Fuel ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Exhaust Gases ◽  
Oil Productivity ◽  
Toxic Components

The paper presents the results of long-term research on the oil productivity and chemical composition of soybean oil of the Northern ecotype varieties in the Central Non-Black Earth Region. The authors consider its possible use for biodiesel production. Experiments on growing soybeans were carried out on the experimental fi eld of Russian State Agrarian University –Moscow Timiryazev Agricultural Academy (2008-2019) on recognized ultra-early ripening varieties of the Northern ecotype Mageva, Svetlaya, Okskaya (ripeness group 000). Tests were set and the research results were analyzed using standard approved methods. It has been shown that in conditions of high latitudes (57°N), limited thermal resources of the Non-Chernozem zone of Russia (the sum of active temperatures of the growing season not exceeding 2000°С), the yield and productivity of soybeans depend on the variety and moisture supply. Over the years, the average yield of soybeans amounted to 1.94 … 2.62 t/ha, oil productivity – 388 … 544 kg/ha, oil content – 19…20%, the content of oleic and linoleic fatty acids in oil – 60%, and their output from seeds harvested – 300 kg/ha. It has been established that as soybean oil and diesel fuel have similar properties,they can be mixed by conventional methods in any proportions and form stable blends that can be stored for a long time. Experimental studies on the use of soybean oil for biodiesel production were carried out on a D-245 diesel engine (4 ChN11/12.5). The concentrations of toxic components (CO, CHx, and NOx) in the diesel exhaust gases were determined using the SAE-7532 gas analyzer. The smoke content of the exhaust gases was measured with an MK-3 Hartridge opacimeter. It has been experimentally established that the transfer of a diesel engine from diesel fuel to a blend of 80% diesel fuel and 20% lubrication oil leads to a change in the integral emissions per test cycle: nitrogen oxides in 0.81 times, carbon monoxide in 0.89 times and unburned hydrocarbons in 0.91 times, i.e. when biodiesel as used as a motor fuel in a serial diesel engine, emissions of all gaseous toxic components are reduced. The study has confi rmed the expediency of using soybeans of the Northern ecotype for biofuel production.

OPTIMIZATION OF GAS-DIESEL ENGINE REGULATION AS A METHOD OF IMPROVING ITS ECOLOGICAL CHARACTERISTICS

2021 ◽  
pp. 28-32
Author(s):  
VALERIY L. CHUMAKOV ◽  
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engine ◽  
Nitrogen Oxides ◽  
Diesel Fuel ◽  
Hydrocarbon Fuel ◽  
Load Range ◽  
Engine Operation ◽  
Exhaust Gases ◽  
Wide Range ◽  
Diesel Cycle

The paper shows some ways to improve the environmental characteristics of a diesel engine using gaseous hydrocarbon fuel and operating the engine in a gas-diesel cycle mode. Some possibilities to reduce toxic components of exhaust gases in a gas-diesel engine operating on liquefi ed propane-butane mixtures have been studied. Experiments carried out in a wide range of load from 10 to 100% and speed from 1400 to 2000 rpm showed that the gas-diesel engine provides a suffi ciently high level of diesel fuel replacement with gas hydrocarbon fuel. The authors indicate some eff ective ways to reduce the toxicity of exhaust gases. The engine power should be adjusted by the simultaneous supply of fuel, gas and throttling the air charge in the intake manifold. This method enriches the fi rst combusting portions to reduce nitrogen oxides and maintains the depletion of the main charge within the fl ammability limits of the gas-air charge to reduce carbon monoxide and hydrocarbons. The authors found that when the engine operates in a gas-diesel cycle mode, the power change provides a decrease in nitrogen oxide emissions of gas-diesel fuel only due to gas supply in almost the entire load range as compared to the pure diesel. At high loads (more than 80%) stable engine operation is ensured up to 90% of diesel fuel replaced by gas. Even at 10% of diesel fuel used the concentration of nitrogen oxides decreases by at least 15…20% as compared with a diesel engine in the entire load range. However, there is an increased emission of hydrocarbons and carbon monoxide in the exhaust gases. Further experimental studies have shown that optimization of the gas diesel regulation can reduce the mass emission of nitrogen oxides contained in exhaust gases in 2…3 times and greatly reduce the emission of incomplete combustion products – carbon monoxide and hydrocarbons.

Characteristics of injection of diesel fuel, rapeseed oil and their mixtures in diesel engines of various types

2021 ◽  
pp. 167-178
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
High Speed ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Fuel Injector ◽  
High Speed Diesel ◽  
Engine Type

The necessity of adapting diesel engines to work on vegetable oils is justified. The possibility of using rapeseed oil and its mixtures with petroleum diesel fuel as motor fuels is considered. Experimental studies of fuel injection of small high-speed diesel engine type MD-6 (1 Ch 8,0/7,5)when using diesel oil and rapeseed oil and computational studies of auto-tractor diesel engine type D-245.12 (1 ChN 11/12,5), working on blends of petroleum diesel fuel and rapeseed oil. When switching autotractor diesel engine from diesel fuel to rapeseed oil in the full-fuel mode, the mass cycle fuel supply increased by 12 %, and in the small-size high-speed diesel engine – by about 27 %. From the point of view of the flow of the working process of these diesel engines, changes in other parameters of the fuel injection process are less significant. Keywords diesel engine; petroleum diesel fuel; vegetable oil; rapeseed oil; high pressure fuel pump; fuel injector; sprayer

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