Researches performed in the laborotory during last years:

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:: Pīrs V., Gailis M., Birzietis G. Neste dīzeļdegvielu salīdzinošie pētījumi. LLU TF SI ADZL, Jelgava, 2016

:: Berjoza D., Pirs V., Dukulis I. Experimental investigation of effectiveness of electric vehicle vacuum brake booster on power test bench // 15th International scientific conference "Engineering for rural development" : proceedings, Jelgava, Latvia, May 25 - 27, 2016 / Latvia University of Agriculture. Faculty of Engineering. Jelgava, 2016. Vol.15, p. 1193-1198

:: Berjoza D., Pirs V., Dukulis I., Jurgena I. Development and analysis of a driving cycle to identify the effectiveness of the vacuum brake booster // Agronomy Research. No.14(3) (2016), p. 672-682

2015

:: Gailis M., Pirs V. Assesment of Compatibility of Fuel Supply System Polyemric Parts with Bioethanol/Gasoline Blend E85. 14th International Scientific Conference "Engineering for Rural Development”. Jelgava: LUA, Latvia, May 20 – 22, 2015.

:: Ilves, R; Kuut, A; Birzietis, G; Pirs, V; Vlasov, A & Olt, J (2015). The Difference Between the Physical Properties of Petrol and Alkylate Petrol and Impact on the Exhaust Gas of a Two-Stroke Engine. Proceedings of the 26th DAAAM International Symposium, p.0562-0569, B. Katalinic (Ed.), Published by DAAAM International, ISBN 978-3-902734-07-5, ISSN 1726-9679, Vienna, Austria DOI: 10.2507/26th.daaam.proceedings.077

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:: Pirs V., Gailis M. Effect of Ignition Timming on Emissions of Spark Ignition Engine using E85 Fuel. In: 20th Annual International Scientific Conference "Research for Rural Development 2014": Proceedings, Volume 1, May 21 – 23, 2014. Jelgava: LUA, p.. 213-218. ISSN 1691-4031

:: Pirs V., Gailis M. Regulated Emissions From Spark Ignition Engine Adapted for use of E85 Fuel. In: 13th International Scientific Conference “Engineering for Rural Development": Proceedings, Volume 13, LUA, 2014, pp. 241-246. ISSN 1691-5976

:: Sondors K., Birkavs A., Dukulis I., Pirs V., Jesko Z. Investigation of Tractor’s Claas Ares 557 ATX Operating Parameters Using Hydrotreated Vegetable Oil Fuel. In: 13th International Scientific Conference “Engineering for Rural Development": Proceedings, Volume 13, LUA, 2014, pp. 63-68. ISSN 1691-5976

:: Rudbahs R., Smigins R. Experimental research on biodiesel compatibility with fuel system elastomers. In: 13th International Scientific Conference “Engineering for Rural Development": Proceedings, Volume 13, LUA, 2014, pp. 278-282. ISSN 1691-5976

:: Sondors K., Dukulis I. Theoretical Evaluation of Hydrotreated Vegetable Oil Application in Diesel Engines. In: Proceedings of the 20th International Scientific Conference „Research for Rural Development”, Volume 1, May 21 – 23, 2014. Jelgava: LUA, p. 205 – 211. ISSN 1691-4031.

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:: Putnieks U., Birzietis G. Melex 963DS Electric Vehicle Driving Range with Partial Charge. In: 12th International Scientific Conference „Engineering for Rural Development”: Proceedings, Volume 12, May 23 – 24, 2013. Jelgava: LUA, p. 297 – 302. ISSN 1691-5976.

:: Dukulis I., Birkavs A. Development of model for running diesel engine on rapeseed oil fuel and its blends with fossil diesel fuel. In: 12th International Scientific Conference „Engineering for Rural Development”: Proceedings, Volume 12, May 23 – 24, 2013. Jelgava: LUA, p. 319 – 325. ISSN 1691-5976.

:: Birkavs A., Dukulis I, Birzietis G. Rapšu eļļas degvielas patēriņa un izmešu emisijas pētījumi, iesmidzinot ūdens–bioetanola maisījumu motora ieplūdes sistēmā (The rapeseed oil fuel consumption and exhaust emissions research injecting a water–bioethanol blend in the engine intake system). Proceedings of the Latvia University of Agriculture. London: Versita, 2013. - Vol.29(1), p.33-40. DOI: 10.2478/plua-2013-0004

:: Pirs V., Gailis M. Research in Use of Fuel Conversion Adapters in Automobiles Running on Bioethanol and Gasoline Mixtures. In: Agronomy Research, Vol. 11(1), Tartu, Estonia, 2013, pp. 205-214.

:: Gailis M., Pirs V. Experimental Investigation of Fuel Conversion Adapter Using Bioethanol and Gasoline Blends. In: 19th Annual International Scientific Conference "Research for Rural Development 2013": Proceedings, Jelgava, Latvia, 15-17 May 2013. Volume 1 2013. pp. 193-199. ISSN 1691-4031

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:: Birkavs A., Birzietis G., Dukulis I. Evaluation of Emissions Operating Diesel Engine with Rapeseed Oil and Fossil Diesel Fuel Blends. In: 11th International Scientific Conference „Engineering for Rural Development”: Proceedings, Volume 11, May 24 – 25, 2012. Jelgava: LUA, p. 338 – 342. ISSN 1691-3043.

:: Pirs V., Jesko Z. Investigation of dynamical and exploitation parameters of slow moving electric car on chassis dynamometer. Proceedings of the 11th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2012, pp. 393. – 399. ISSN 1691-3043.

:: Berjoza D. Dukulis I., Ceple Dz. Investigation of electric car acceleration characteristics performing on road test. Proceedings of 11th International Scientific Conference "Engineering for Rural Development". May 24-25, 2012. Jelgava: LUA, pp. 318. – 323. ISSN 1691-3043.

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:: Baks V., Dukulis I., Birkavs A. Emission and Fuel Consumption Studies Using Separated at Low Temperatures Pure Rapeseed Oil. In: 10th International Scientific Conference „Engineering for Rural Development”: Proceedings, Volume 10, May 26 – 27, 2011. Jelgava: LUA, p. 239 – 243. ISSN 1691-3043.

:: Birkavs A., Dukulis I. Development of Experimental Equipment for Vegetable Oil Fuel Research. In: Proceedings of the 17th International Scientific Conference „Research for Rural Development”, Volume 1, May 18 – 20, 2011. Jelgava: LUA, p. 173 – 178. ISSN 1691-4031.

:: Bremers G., Birzietis G., Blija A., Danilevics A., Skele A. Scheme of Technology for Congruent Dehydration of Bioethanol in Semi-dry Way. Proceedings of 10th International Scientific Conference "Engineering for Rural Development". May 26-27, 2011. Jelgava: LUA, pp. 244.-247. ISSN 1691-5976

:: Gailis M., Pirs V. Research in influence of engine air filter replacement periodicity. Proceedings of the 10th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2011, pp. 173. – 178. ISSN 1691-5976

:: Berjoza D. Dynamic of slow- moving electric vehicles. Proceedings of 10th International Scientific Conference "Engineering for Rural Development". May 26-27, 2011. Jelgava: LUA, pp. 185. - 190. ISSN 1691-5976.

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:: Aboltins A., Berjoza D., Pirs V. Theoretical Model of Exploitation of Automobiles Operated with Bioethanol-Gasoline Mixture Fuels. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 133. – 138. ISSN 1691-3043.

:: Bremers G., Birzietis G., Blija A., Skele A., Rucins A., Danilevics A. Evaluation Usability of Water Adsorption and Rectification in Dehydration of Bioethanol. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 154. – 157. ISSN 1691-3043.

:: Birkavs A., Dukulis I., Birzietis G. Investigation of the Impact of Biofuel Blend on Arctic Diesel Fuel Properties. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 158. – 161. ISSN 1691-3043.

:: Baks V., Dukulis I. The Specific Peculiarities of Rapeseed Fuel Usage Depending on Oil Chemical Structure. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 162. – 165. ISSN 1691-3043.

:: Smigins R., Aboltins A. Comparision of Model Calculations and Experimental Results of Diesel Engine Fuelled with Biodiesel. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 166. – 169. ISSN 1691-3043.

:: Mistris J., Birzietis G. Most Widespread Car Fuel Systems in Latvia. Proceedings of the 9th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2010, pp. 170. – 173. ISSN 1691-3043.

:: Pirs V., Dukulis I. Emission Reduction Potential of Using Biofuels. Proceedings of the 16th International Scientific Conference „Research for Rural Development”, Volume 1, May 19 – 21, 2010. Jelgava: LUA, p. 85 – 90. ISSN 1691-4031.

:: Dukulis I., Birzietis G., Birkavs A., Pirs V., Jesko Z. Exhaust Emissions from the Vehicles Operating on Rapeseed Oil Fuel. Agronomy Research, Volume 8, Biosystems Engineering, Special Issue 1. Tartu: Estonian University of Life Sciences, p. 39 – 46. ISSN 1406-894X.

:: Pirs V., Berjoza D., Birzietis G., Dukulis I. Fuel Consumption Studies of Spark Ignition Engine Using Blends of Gasoline with Bioethanol. Agronomy Research, Volume 8, Biosystems Engineering, Special Issue 1. Tartu: Estonian University of Life Sciences, p. 208 – 215. ISSN 1406-894X.

:: Pirs V., Malnicenko V. Bioethanol Gasoline Fuel Blends Effect on Standard Spark-Ignition Engine Operating Parameters. Agricultural Engineering: Proceedings of the International Scientific Conference „Mobile Machines”, September 23 – 24, 2010. Kaunas: Lithuanian University of Agriculture, p. 115 – 126. ISSN 1392-1134.

:: Dukulis I., Birkavs A., Birzietis G. Investigation of Flowability of Rapeseed Oil and Diesel Fuel Blends in Winter Conditions. Agricultural Engineering: Proceedings of the International Scientific Conference „Mobile Machines”, September 23 – 24, 2010. Kaunas: Lithuanian University of Agriculture, p. 204 – 213. ISSN 1392-1134.

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:: Dukulis I., Pirs V., Jesko Z., Birkavs A., Birzietis G. Testing of Automobile VW Golf Operating on Three Different Fuels. Proceedings of the 8th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2009, pp. 7. – 13. ISSN 1691-5976.

:: Dukulis I., Birkavs A., Birzietis G., Pirs V. Adapting of Automobile VW Golf for Using Pure Rape Oil As a Fuel. Proceedings of the 8th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2009, pp. 141. – 147. ISSN 1691-5976.

:: Dukulis I., Pirs V., Jesko Z., Birkavs A., Birzietis G. Development of Methodics for Testing Automobiles Operating on Biofuels. Proceedings of the 8th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2009, pp. 148. – 155. ISSN 1691-5976.

:: Dukulis I., Pirs V. Development of Driving Cycles for Dynamometer Control Software Corresponding to Peculiarities of Latvia. Proceedings of the 15th International Scientific Conference „Research for Rural Development”, May 20 – 22, 2009. Jelgava: LUA, p. 95 – 102. ISSN 1691-4031.

:: Bremers G., Birzietis G., Blija A., Škele A., Danilevics A. Bioethanol congruent dehydratation. Proceedings of the 8th International Scientific Conference "Engineering for rural development". May 28 - 29, 2009. Jelgava: LUA, pp.131.-134. ISSN 1691-5739.

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:: Pīrs V., Jesko Ž., Lāceklis – Bertmanis J. Determination Methods of Fuel Consumption in Laboratory Conditions. Proceedings of the 7th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2008, pp. 154. – 159. ISSN 1691-3043.

:: Dukulis I., Birzietis G., Kanaška D. Optimization Models for Biofuel Logistic Systems. Proceedings of the 7th International Scientific Conference „Engineering for Rural Development”. Jelgava: LUA, 2008, pp. 283. – 289. ISSN 1691-3043.

:: Dukulis I. Using of AnyLogic and ExtendSim in Modelling of Biofuel Logistic Systems. Proceedings of the 14th International Scientific Conference „Research for Rural Development”, May 21 – 23, 2008. Jelgava: LUA, p. 249 – 257. ISSN 1691-4031.

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:: PirsV., Berjoza D. Research in engine power parameters when changing the adjustment of the distribution phases. Proceedings of the 6th International Scientific Conference „Engineering for rural development”. Jelgava: LUA, 2007, pp 357. - 360.