Mathematical modeling of soot generation and burnout in a 2Ch 10,5/12,0 diesel cylinder operating on rapeseed oil and ethanol
Authors: Likhanov V.A., Kozlov A.N., Araslanov M.I.
Published in issue: #8(68)/2017
DOI: 10.18698/2308-6033-2017-8-1649
Category: Power, Metallurgic and Chemical Engineering | Chapter: Heat Engines
We consider one of the promising methods of decreasing diesel exhaust gas opacity, namely using alternative fuels, employing which makes it possible to replace petroleum fuel. We present a mathematical model for soot generation in a diesel cylinder during rapeseed oil and ethanol combustion. The model is based on the chemical kinetics for pyrolysis of fuel hydrocarbons and a high-temperature acetylene mechanism. We suggest a soot generation chemism for diesels operating on rapeseed oil and ethanol, based on contemporary understanding of the soot particle precursor formation mechanism in diesel combustion chambers. Calculation results for the exhaust gas opacity level of the 2Ch 10,5/12,0 diesel using rapeseed oil and ethanol show that while operating on alternative fuels under nominal conditions, soot concentration in exhaust gases decreases by 3.7 times as compared to using diesel fuel. The results of theoretical computations obtained are in satisfactory agreement with the experimental data.
References
[1] Matievskiy D.D., Svistula A.E. Polzunovsky vestnik - Polzunovsky vestnik (Herald of I.I. Polzunov Altai State Technical University), 2002, no. 1, pp. 10-16.
[2] Matveev S.G., Orlov M.Yu., Chechet I.V., Semenov A.V. Vestnik Samarskogo gosudarstvennogo aerokosmicheskogo universiteta - Vestnik (Herald) of the Samara State Aerospace University. Aerospace and Mechanical Engineering, 2009, no. 3, pp. 210-214.
[3] Sharomov I.M., Zonov A.V., Chuprakov A.I. Obrazovanie benz(a)pirena i zarodyshey sazhi. Uluchshenie ekspluatatsionnykh pokazateley dvigateley vnutrennego sgoraniya [Benzo[a]pyrene and soot precursor formation. Improving performance characteristics of internal combustion engines]. Materialy IV Mezhdunar. nauch.-prakt. konf. Nauka - Tekhnologiya - Resursosberezhenie. Sb. nauch. trudov [Proc. of the 4th International scientific and applied conference, Science - Technology - Resource Conservation]. Kirov, Vyatka State Agricultural Academy Publ., 2011, pp. 154-159.
[4] Denisova E.S. Omskiy nauchnyy vestnik - Omsk Scientific Bulletin, 2014, no. 2 (134), pp. 196-199.
[5] Toropov A.E. Uluchshenie ekologicheskikh pokazateley dizelya 4Ch 11,0/12,5 pri rabote na metanolo-toplivnoy emulsii putem snizheniya dymnosti otrabotavshikh gazov. Diss .... kand. tekhn. nauk [Improving environmental peformance of the 4ChN 11.0/12.5 diesel running on methanol/fuel emulsion by means of decreasing the exhaust gas opacity. Cand. eng. sc. diss.]. Kirov, 2010, 172 p.
[6] Rossokhin A.V. Molodoy uchenyy - Young Scientist, 2015, no. 15 (95), pp. 171-174.
[7] Lozhkin V.N. Issledovanie dinamiki i termicheskikh usloviy sazhevydeleniya pri sgoranii raspylennogo topliva v tsilindre dizeley. Diss. ... kand. tekhn. nauk [Investigating the dynamos and thermal conditions of soot generation during combustion of fuel sprayed in diesel cylinders. Cand. eng. sc. diss.]. Leningrad, 1978, 228 p.
[8] Likhanov V.A., Sharomov I.M. Snizhenie dymnosti otrabotavshikh gazov traktornogo dizelya 4Ch 11,0/12,5 putem primeneniya etanolo-toplivnykh emulsiy [Redoing exhaust gas oparity of the 4ChN 11.0/12.5 tractor diesel by means of using ethanol/fuel emulsion]. Kirov, Vyatka State Agricultural Academy Publ., 2012, 144 p.
[9] Petrichenko R.M., Baturin S.A., Isakov Yu.N., Pugachev B.P. Elementy sistemy avtomatizirovannogo proektirovaniya DVS. Algoritmy prikladnykh programm [Elements of computer aided design systems for internal combustion engines. Software application algorithms]. Leningrad, Mashinostroenie Publ., 1990, 328 p.
[10] Rossokhin A.V. Osobennosti rascheta sazhevydeleniya v dizelyakh [Specifics of soot formation computations in diesels]. Materialy VIMezhdunar. nauch.-prakt. konf. Nauka - Tekhnologiya - Resursosberezhenie. Sb. nauch. trudov [Proc. of 6th International scientific and applied conference, Science - Technology - Resource Conservation]. Kirov, Vyatka State Agricultural Academy Publ., 2013, pp. 196-199.
[11] Razleytsev N.F. Modelirovanie i optimizatsiya protsessa sgoraniya v dizelyakh [Modeling and optimising the combustion process in diesels]. Kharkiv, Vysshaya Shkola Publ., 1980, 169 p.
[12] Baturin S.A. Fizicheskie osnovy i matematicheskoe modelirovanie protsessov sazhevydeleniya i teplovogo izlucheniya v dizelyakh. Diss. ... dokt. tekhn. nauk [Physical foundations and mathematical modeling of soot generation and heat emission processes in diesels. Dr. eng. sc. diss.]. Leningrad, 1982, 441 p.
[13] Kuleshov A.S. Programma rascheta i optimizatsii dvigateley vnutrennego sgoraniya DIZEL-RK. Opisanie matematicheskikh modeley, reshenie optimizatsionnykh zadach [DIZEL-RK software for computing and optimising internal combustion engine parameters. Description of mathematical models, solutions to optimisation problems]. Moscow, BMSTU Publ., 2004, 123 p.