Prindi see leht

Engine test laboratory

Contact:
Risto Ilves
e-mail: risto.ilves@emu.ee
Tel.: +372 58 161 529
Address:
Chair of Biosystems Engineering
Institute of Forestry and Engineering
Estonian University of Life Sciences
56 Fr. R. Kreutzwaldi Street 
51006 Tartu


Research activities:

  1. The research of the impact of alternative fuels on the efficiency parameters and exhaust gas emissions of an internal combustion engine.
  2. The improvement and development of engine fuel supply systems.
  3. The development of simulation models of an internal combustion engine.

Services:

  1. The research of the impact of fuel additives on internal combustion engines.
  2. Conducting engine tests and performing engine adjustments.
  3. Conducting engine tests with liquid fuels (diesel fuel, gasoline, ethanol, bio oils, aviation fuels) and gas fuels (CNG, LPG).
  4. The development work related to internal combustion engines and fuels.
     
   Lectures in the lab:
The purpose of studies in the lab is to prepare specialists for the automotive field who would be able to construct, test and diagnose vehicles

TE.250 Theory of automobiles and tractors 
TE.0936 Chemmotology
TE.0938 Vehicle information systems 
TE.0937 Automotive diagnostics 

Publications:

Ilves, Risto; Põldaru, Rauno; Annuk, Andres; Olt, Jüri (2022). The impact of a two-phase diesel fuel pilot injection on the compressed natural gas air–fuel mixture combustion process in a diesel engine. Transport, 37(5), 330−338. DOI: 10.3846/transport.2022.17938.

Raide, Veljo; Ilves, Risto; Olt, Jüri (2021). Developing and testing air-fuel mixture heating system for internal combustion engine. Proceedings of 20th International Scientific Conference ENGINEERING FOR RURAL DEVELOPMENT: 20th International Scientific Conference Engineering for Rural Development, May 26-28, 2021. Jelgava, Latvia: Latvia University of Life Sciences and Technologies, 1393−1401. DOI: 10.22616/ERDev.2021.20.TF299

Küüt, Keio; Ilves, Risto; Küüt, Arne; Olt, Jüri (2020). The Impact of the Bioethanol Fuel on the Exhaust Gas Emission of a Two-Stroke Engine. In: TRANSBALTICA XI: Transportation Science and Technology (185−192). Springer, Cham. (Lecture Notes in Intelligent Transportation and Infrastructure). DOI: 10.1007/978-3-030-38666-5_19

Kaletnik, H.; Mazur, V.; Gunko, I.; Ryaboshapka, V.; Bulgakov, V.; Raide, V.; Ilves, R.; Olt, J. (2020). Study on performance of compression engine operated by biodiesel fuel. Agronomy Research, 18(S1), 862−887. DOI: 10.15159/AR.20.027

Ilves, Risto; Küüt, Arne; Olt, Jüri (2019). Ethanol as Internal Combustion Engine Fuel. In: Angelo Basile Adolfo Iulianelli Francesco Dalena T. Nejat Veziroglu (Ed.). Ethanol, 1st Edition. Science and Engineering (215−229). Elsevier.

Küüt, Arne; Ritslaid, Kaie; Küüt, Keio; Ilves, Risto; Olt, Jüri (2019). State of the Art on the Conventional Processes for Ethanol Production. In: Angelo Basile, Adolfo Iulianelli, Francesco Dalena, T. Nejat Veziroglu (Ed.). Ethanol, 1st Edition, Science and Engineering (61−101). Elsevier.

Raide, Veljo; Ilves, Risto; Küüt, Arne; Olt, Jüri (2018). Development of heat exchange reactor for preparation of air-fuel mixture in spark ignition engine. ENGINEERING FOR RURAL DEVELOPMENT, 2040−2047.

Küüt, Arne; Ilves, Risto; Küüt, Keio; Ritslaid, Kaie; Olt, Jüri (2018). Euroopa Liidu õigusaktide mõju vedelate biokütuse kasutamisele transpordisektoris. Taastuvate energiaallikate uurimine ja kasutamine: TEUK: 8. november 2018, Tartu, Eesti Maaülikool. Toim. Vollmer, Elis; Lehis, Margit. Eesti Maaülikool, 41−56.

Ilves, Risto; Küüt, Arne; Olt, Jüri (2018). Biodiislikütuse lisandi mõju diiselmootori põlemisprotsessile. Taastuvate energiaallikate uurimine ja kasutamine: TEUK: TEUK XX, 8. november 2018, Tartu, Eesti Maaülikool. Toim. Elis Vollmer, Margit Lehis. Eesti Maaülikool, 28−40.

Küüt, Arne; Ilves, Risto; Küüt, Keio; Raide, Veljo; Ritslaid, Kaie; Olt, Jüri (2017). Influence of European Union Directives on the Use of Liquid Biofuel in the Transport Sector. Procedia Engineering, 30−39.

Raide, Veljo; Ilves, Risto; Küüt, Arne; Küüt, Keio; Olt, Jüri (2017). Existing state of art of free-piston engines. Agronomy Research, 1204−1222.

Küüt, K.; Raide, V.; Ilves, R.; Küüt, A.; Olt, J. (2017). Endurance test methodology and assessment of common rail fuel supply system wear while using bioethanol fuels. Actual Tasks on Agricultural Engineering Conference Proceedings: 45th International symposium "Actual Tasks on Agricultural Engineering", Opatija, 21-24.02.2017. Ed. Igor Kovačev. University of Zagreb, Faculty of Agriculture: University of Zagreb, 111−119 [ilmumas].
   
 Projects:
  Taastuvate transpordikütuste tulevik Eestis: regulatsioonid ning kasutamine
Lühiülevaade		  

T170043TIBT
Biokütuste mõju sisepõlemismootori saasteainete heitkogustele 
Aruanne 1   Aruanne 2

1.08.17 − 15.03.18

L180103TIBT

12.02.18 – 16.02.18

L170238TIBT

27.09.17 – 09.10.17

8L160001TIPT

08.01.16 − 31.12.17

8-2/T12146TEPT

20.09.12 – 25.11.12

8-2/T12097TEPT

Modifitseeritud toite- ja süütesüsteemiga kolbmootori testimine, diagnoosimine ja häälestamine

06.06.12 – 22.06.12


The capabilities of the engine test lab:

The following tests and measurements can be carried out in the engine test lab:

Tests on compression and spark ignition engines:

  • Measuring the efficiency characteristics of engines:
    The parameters that can be measured are:
    Torque, rotational speed of the crankshaft, air and fuel consumption, the temperatures of engine cooling liquid and oil, oil pressure, the pressure of the intake manifold, the temperature of exhaust gas, the concentration of hazardous compounds (CO, CO2, NOx, HC, soot level) in the exhaust gas, the cylinder pressure of the engine in combustion process.
  • The adjustment of an engine:  
    The optimization of efficiency parameters of an engine according to the pressure of the engine intake manifold and the position of the accelerator pedal.
  • Engine diagnostics: 
    The measured diagnostics parameters are: engine torque, the combustion pressure in the cylinder, compression, injection and/or ignition timing, oil pressure, exhaust gas emission, the output and input parameters of electronic sensors.

Tests on diesel fuel supply apparatus:

  • Diagnostics and repair works:
    The engine test lab enables to diagnose and repair the following diesel fuel supply apparatuses: common rail systems, electronically controlled axial injection pumps, mechanical in-line and distributor pumps, the testing of electronical and mechanical injectors.
  • The measurement of the characteristics of fuel supply systems: the fuel supply of the system depending on the injection pressure, the rotational speed of the pump’s shaft, and the position of the rack. 
  • Duration tests: it is possible to carry out duration tests in the engine test lab during which the wearing of the fuel supply system can be evaluated.

   Devices

   Testing equipment:
  1. Engine test stand: Schenck Dynas3 LI250, torque range 0-650 Nm.
    Max braking power 250 kW, max rotational speed 12000 p min-1, accuracy 0,1%. The stand allows to carry out engine tests on partial and full load mode.

AVL 5402 CR DI Single Cylinder Research Engine
Engine Specifications:

  • Bore 85 mm
  • Stroke 90 mm
  • Displacement 510 ccm
  • Max. speed 4200 rpm
  • Max. firing pressure 170 bar
  • Max. BMEP ~ 14 bar at 2300 rpm and supercharged operation
  • Max. output ~ 19 kW at 4200 rpm and supercharged operation
  • Compression ratio 17:1 (approx.)
Fuel supply system: Common rail
Control hardware and software: AVL RPEMS control unit and INCA 7.1 software
Conditioning unit: AVL 557
The engine test stand Schenck Dynas3 LI 250.
 

The control device of the Schenck Dynas3 LI 250.
  1. Fuel consumption measurement AVL 7351, measurement range 0–125 kg h-1 (at density 0,75 g cm-3) accuracy ≤ 0.12.
  2. Combustion pressure measurement: Module AVL 621 with amplifier AVL 2P2E.
    Pressure sensor GH13P, accuracy ≤ 1,5%.
  3. Air consumption measurement: AVL Flowsonix Air 100. Measuring head for the measurement range +/- 20–1400 kg h-1.
    Accuracy < ±1%.
  4. Exhaust gas analyser Bosch BEA 350.

Exhaust gas compounds:

  • CO measuring range 0.000–10.00% vol Resolution 0.001%
  • CO2 measuring range 0.00–18.00% vol Resolution 0.01%
  • HC measuring range 0–9999 ppm vol Resolution 1 ppm vol
  • O2 measuring range 0.00–22.00% vol Resolution 0.01% vol
  • λ measuring range 0.500–9.999 Resolution 0.001
  • NOx measuring range 0–5000 ppm vol Resolution <= 1 ppm vol
  • Degree of opacity 0–100% Resolution 0.1%
  • Absorption coefficient 0–10 m-1 Resolution 0.01 m-1.
  • PM counting device Airmodus A20:
  • Measurement range 7 nm – 2.5 µm;
  • Concentration 0–100 000 #/cm;
  • The device is adjusted for measuring the engine PM in exhaust gases.
  • We can also use gas supply system (CNG and LPG) on the engine.
  • Diesel fuel supply system control system Dieselland SPN 308.
  • Vehicle chasse dyno Dynojet 224xLC.
  • Tractor Dynamometer LPS ZW-500 with fuel consumption measurement.

Recent research topics:

Tests of diesel fuel, biodiesel, and their mixtures in a SCRE engine; gas tests in a SCRE engine; tests of ethanol, gasoline, and their mixtures in an Audi ADR 1.8 engine; gas tests (LPG, CNG) in an Audi ADR 1.8 engine; chassis dyno tests with gas and diesel vehicles; the research of fuel additives; the research of supplementary devices for a fuel supply system; the development of a fuel supply system; the research of fuel spray and its modelling (fuel spray formation and droplets’ size in the fuel spray according to the fuel viscosity).
 
    Overview of the laboratory
Audi 1.8i Engine test.
Research engine AVL SCRE.
Exhaust gas analyser BEA 350.

   Fuel consumption measurement AVL 7351 CME and air consumption measurement AVL FLOWSONIX AIR 100
Technical data:
  • Measure range: 0–125 kg h-1 at
    density 0,75 g cm-3;
  • Accuracy: 0.12%;
  • Measure error of density: 0,0005 g cm-3;
  • Fuels: gasoline, diesel fuel, biodiesel, methanol, ethanol, etc.
 
 
The measurement device of air consumption AVL FLOWSONIX AIR 100.
 
   Indicating system AVL
  • Measurement range: 0–250 bar;
  • Measurement accuracy: ~ 0,2 %;
  • Graphically presentable: pressure diagram according to the position of the crankshaft and pressure diagram according to volume.  
 
AVL indicating system and combustion pressure diagrams.

 
Diesel fuel supply system test stand Dieselland SPN 308

Diesel fuel supply system:

  • Common rail;
  • Electronically controlled distribution pump;
  • Mechanical distribution and inline injection pumps.
Diesel fuel supply systems test stand Dieselland SPN 308.
Engine tests characteristics.

The patent solutions developed in the engine test laboratory:

Kolbmootori küttesegu moodustamise meetod ja põimtoitesüsteem

Dokumendi nr: EE201100021		 The invention belongs to the area of self-propelled machines, more specifically to the fuel supply systems of piston engines. In addition, the invention is used to supply piston engines with ethanol as additional fuel. What makes the formation of piston engine mixture peculiar is the fact that it is formed with both qualitative and quantitative forming methods at the same time whereas the alcohol fuel is injected into the combustion chamber of the piston engine in two stages. During the first stage of the two-staged quantitative injection, the alcohol fuel is aspirated into the pulverizer by directed air flow. When the air flow reaches the pulverizers, the alcohol fuel is broken into small particles and mixed with air. During the second stage which follows, jets of fuel particles are directed together and when in contact, fuel particles are additionally broken in the space between the pulverizers. The complex system of forming the mixture for piston engines includes a diesel feed system, an alcohol fuel feed system and an air pressure system connected with the alcohol fuel feed system whereas the alcohol fuel feed system includes an alcohol fuel mixing chamber with pulverizers. The latter are located in the corpus of the mixing chamber in pairs, face to face and uniaxially.

Lisatoitesüsteem vedelate biokütuste doseerimiseks sisepõlemismootoris

Dokumendi nr: EE201100077		 The particular invention belongs to the field of fuel supply systems of internal combustion engines. More precisely, it is considered a multi injection system and is designed for producing an air fuel mixture out of different liquid fuels, including biofuels. It can also be used for dosing the mixture into the cylinder of an internal combustion engine. An additional fuel supply system for dosing liquid biofuels into an internal combustion engine includes an intake manifold, a fuel tank, a fuel pump, a fuel filter, a pressure regulator, and a fuel dosing system. The fuel dosing system includes a fuel doser, a fuel distributor and injectors for injecting the fuel behind the intake valve, whereas the fuel dosing system additionally includes a control module designed for directing the fuel doser electronically. The switching circuit of the mentioned control module is a transistor switching circuit. The fuel doser includes an electro-magnetic valve and a fuel distributor.

Lisatoitesüsteem vedelate biokütuste doseerimiseks survesüütega mootorisse

Dokumendi nr: EE 05741 B1		 The invention belongs to the subject field of fuel supply systems of piston engines, to be more precise, to mono injection systems, and it is designed to form quality air fuel mixture from liquid fuels.The additional fuel supply system for dosing liquid biofuels into compression ignition engines consists of an intake manifold, an additional fuel tank, a delivery pump, a fuel pressure regulator, a fuel dosing apparatus which includes fuel dosers, pulverizer injectors and a corpus which connects these. Moreover, the additional fuel supply system additionally includes an electronical control unit which is designed for electronically controlling the dosing apparatus of the fuel according to engine's load. The particular control unit is for controlling the work of the additional fuel supply system on a compression ignition engine based on the data obtained from the rotational speed sensor of the crankshaft and the position sensor of the acceleration lever.