scholarly journals DIESEL ENGINE WITH DIFFERENT KIND OF INJECTION SYSTEMS EXHAUST GAS ANALYSIS / DYZELINIŲ VARIKLIŲ SU ĮVAIRIOMIS ĮPURŠKIMO SISTEMOMIS IŠMETAMŲJŲ DUJŲ TYRIMAS

2016 ◽  
Vol 7 (5) ◽  
pp. 594-600 ◽  
Author(s):  
Mantas Smolnikovas ◽  
Gintas Viselga ◽  
Greta Viselgaitė ◽  
Algirdas Jasinskas
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Diesel Engines ◽  
Experimental Studies ◽  
Structural Evolution ◽  
Gas Analysis ◽  
Exhaust Gas ◽  
Emission Rates ◽  
Analytical Research

The article presents an overview of structural evolution of diesel engines’ injection systems, air pollution caused by diesel engines and permissible emission rates. An analytical research on air pollution was also performed. Experimental studies evaluated air pollution during the emission of particulate matter according to diesel engine exploitation time and different constructions emissions. Apžvelgta dyzelinių variklių įpurškimo sistemų konstrukcijų raida, aplinkos oro tarša dyzelinių variklių išmetamosiomis dujomis ir leistinos jų emisijų normos, atlikti analitiniai oro taršos tyrimai. Eksperimentiniais tyrimais įvertinta oro tarša į aplinką išmetamomis kietosiomis dalelėmis iš skirtingų konstrukcijų ir eksploatacijos laiko dyzelinių variklių.

scholarly journals Excess Air Ratio Management in a Diesel Engine with Exhaust Backpressure Compensation

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6701
Author(s):  
Piotr Kasprzyk ◽  
Jacek Hunicz ◽  
Arkadiusz Rybak ◽  
Michał S. Gęca ◽  
Maciej Mikulski
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Exhaust System ◽  
Gas Analysis ◽  
Feedback Signal ◽  
Exhaust Gas ◽  
Lean Burn ◽  
Gasoline Engines ◽  
Excess Air ◽  
Low Emission

The paper investigates the operation of a wideband universal exhaust gas oxygen (UEGO) sensor in a diesel engine under elevated exhaust backpressure. Although UEGO sensors provide the excess air ratio feedback signal primarily in spark ignition engines, they are also used in diesel engines to facilitate low-emission combustion. The excess air signal is used as an input for the fuel mass observer, as well as to run the engine in the low-emission regime and enable smokeless acceleration. To ensure a short response time and individual cylinder control, the UEGO sensor can be installed upstream of a turbocharger; however, this means that the exhaust gas pressure affects the measured oxygen concentration. Therefore, this study determines the sensor’s sensitivity to the exhaust pressure under typical conditions for lean burn low-emission diesel engines. Identification experiments are carried out on a supercharged single-cylinder diesel engine with an exhaust system mimicking the operation of the turbocharger. The apparent excess air measured with the UEGO sensor is compared to that obtained in a detailed exhaust gas analysis. The comparison of reference and apparent signals shows that the pressure compensation correlations used in gasoline engines do not provide the correct values for diesel engine conditions. Therefore, based on the data analysis, a new empirical formula is proposed, for which the suitability for lean burn diesel engines is verified.

Improving the Fuel Supply Process in Locomotive Diesel Engines

2020 ◽  
pp. 63-76
Author(s):  
V.A. Markov ◽  
V.V. Furman ◽  
S.V. Plakhov
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Fuel Efficiency ◽  
Operation Mode ◽  
Experimental Studies ◽  
Exhaust Gas ◽  
Diesel Generator ◽  
Fuel Supply ◽  
Initial Fuel ◽  
Locomotive Diesel

A topical problem of improving the fuel supply process in locomotive diesel engines in considered in this article. An ESUVT.01 type electronic control system developed by OOO PPP Dizelavtomatika (Saratov) for a D50 (6 ChN 31.8/33) locomotive diesel engine manufactured by Penzadizelmash is presented. It is shown that fuel efficiency and exhaust gas toxicity indicators can be significantly improved by optimizing the initial fuel supply phase, that is the injection advance angle. Experimental studies are conducted to assess the influence of this angle on the locomotive engine characteristics. Bench tests were carried out on a 1-PDG4D diesel generator consisting of the above-mentioned diesel engine and a traction generator MPT-84/39. As the result of the tests, dependencies of the diesel characteristics on the injection advance angle are obtained, and the need to optimize the injection advance angle according to the diesel operation mode is confirmed. Optimized values of the injection advance angle in the diesel characteristics modes are obtained. Fuel efficiency and exhaust gas toxicity indicators are determined at the optimized injection advance angle.

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

scholarly journals Experimental investigation on performance, smoke and exhaust gas analysis of four stroke diesel engine using pongomia/neem oil biodiesel

2021 ◽  
Vol 12 (4) ◽  
pp. 23-40
Author(s):  
Naresh Kumar Konada ◽  
K.N.S. Suma ◽  
B.B. Ashok Kumar
Keyword(s):  
Diesel Engine ◽  
Energy Demand ◽  
Alternative Fuels ◽  
Gas Analysis ◽  
Load Test ◽  
Transport Sector ◽  
Exhaust Gas ◽  
Neem Oil ◽  
Fuel Blends ◽  
Ci Engines

Increase in energy demand, stringent emission norms and depletion of oil resources led to the discovery of alternative fuels forinternal combustion engines. Many alternative fuels like alcohols, petroleum gas, and compressed natural gas have been alreadycommercialized in the transport sector. In the present work, Pongomia oil and Neem oil are blended with diesel and used as analternate fuel for CI engines. The Pongomia oil and Neem oil can be converted into bio diesel using a chemical process of trans- esterification.Different proportions of fuel blends have been produced by the process of blending bio diesel consisting of 10%, 15%, 20%, 25%, and 30% (B10, B15, B20, B25, B30). The fuel properties of each blend are determined. The load test along with smoke and exhaust gas analysis of 4- Stroke Diesel engine using the blends of Pongomia oil and Neem oil with diesel are done in this study. The performance parameters of an engine are calculated for different blends. The sustainability of using alternate fuels in Diesel engines, especially the potential use of Pongomia oil and Neem oil as biodiesel have been brought to the fore through this work and suitable blends of bio diesel is suggested from the results. Keywords: 4-Stroke Diesel Engine, Pongomia and Neem oil Bo diesel, Performance, Smoke and exhaust gas analysis.

Diesel Engine Intake Condition Control-Oriented Models for Active Fuel Injection Profile Control

2011 ◽  
Author(s):  
Fengjun Yan ◽  
Junmin Wang
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Fuel Injection ◽  
Combustion Process ◽  
Exhaust Gas Recirculation ◽  
High Fidelity ◽  
Exhaust Gas ◽  
Engine Model ◽  
Profile Control ◽  
Gas Recirculation

Fueling control in Diesel engines is not only of significance to the combustion process in one particular cycle, but also influences the subsequent dynamics of air-path loop and combustion events, particularly when exhaust gas recirculation (EGR) is employed. To better reveal such inherently interactive relations, this paper presents a physics-based, control-oriented model describing the dynamics of the intake conditions with fuel injection profile being its input for Diesel engines equipped with EGR and turbocharging systems. The effectiveness of this model is validated by comparing the predictive results with those produced by a high-fidelity 1-D computational GT-Power engine model.

scholarly journals Experimental studies of impact of exhaust gas recirculation on the effective operation in heavy augmented diesel engine

2017 ◽  
Vol 9 (1S) ◽  
pp. 122
Author(s):  
V.M. Gureev ◽  
A.Kh. Khayrullin ◽  
R.R. Khasanov ◽  
M.V. Gureev ◽  
R.R. Salakhov ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Experimental Studies ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Effective Operation ◽  
Gas Recirculation

scholarly journals Emission Rates of Particulate Matter and Elemental and Organic Carbon from In-Use Diesel Engines

2004 ◽  
Vol 38 (9) ◽  
pp. 2544-2550 ◽  
Author(s):  
Sandip D. Shah ◽  
David R. Cocker ◽  
J. Wayne Miller ◽  
Joseph M. Norbeck
Keyword(s):  
Particulate Matter ◽  
Organic Carbon ◽  
Diesel Engines ◽  
Emission Rates

scholarly journals DEVICE FOR PURIFICATION OF DIESEL ENGINE EXHAUST GASES

2021 ◽  
pp. 92-97
Author(s):  
A.V. Nelidkin ◽  
◽  
S.N. Borychev ◽  
D.O. Oleynik ◽  
◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Exhaust Gas ◽  
Toxic Substances ◽  
Closed Volume ◽  
Engine Exhaust ◽  
Gasoline Engines ◽  
Agricultural Enterprises ◽  
Operational Life

To ensure high quality and productive work of employ-ees, it is necessary to achieve the target parameters of the microclimate and to exclude harmful and toxic substances in the atmosphere of the working area of agricultural prem-ises of a closed volume and air exchange. The main rea-son for the distortion of the air-gas regime of the room is the use of agricultural machines in closed industrial prem-ises (warehouses, storage facilities, livestock facilities, etc.). As a result, there is a decrease in the quality of prod-ucts and working conditions at agricultural enterprises, as well as a reduction in the operational life of structures. To-day, in agricultural machinery, diesel engines are most often used as power units which, unlike gasoline engines are more economical, and also reduce the harmful impact on the environment. But, despite this, the operation of die-sel engines still causes the accumulation of harmful com-ponents in the atmosphere of the room which negatively affects the health of the staff. The analysis of the designs of devices for exhaust gas purificationof internal combus-tion engines revealed the problems that affect the efficien-cy of the purification. The most significant problems are as following: large weight and dimensions, reduced efficiency of the neutralizers when the engine is running at modes close to the nominal ones, and large gas-dynamic re-sistance. To solve these problems, the design of a device for exhaust gas purificationin diesel engines was devel-oped. The use of this utility model will increase the efficien-cy of the device for exhaust gas purification. It will improve the environmental performance of the diesel engine reduc-ing emissions of harmful substances and soot into the at-mosphere.

scholarly journals Effect of Biodiesel B100 and Ethanol Blends on the Performance of Small Diesel Engine

2021 ◽  
Vol 2 (2) ◽  
pp. 101
Author(s):  
Alfian Firdiansyah ◽  
Nasrul Ilminnafik ◽  
Agus Triono ◽  
Muh Nurkoyim Kustanto
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Alternative Energy ◽  
High Efficiency ◽  
Engine Performance ◽  
Exhaust Gas ◽  
Calophyllum Inophyllum ◽  
Ethanol Blends ◽  
High Level ◽  
Test Fuel

<p class="02abstracttext"><span lang="IN">A small diesel engine is a machine that has high efficiency but causes a high level of pollution. The most widely used fuel so far is fossil energy which is unrenewable energy. The fruit of the Calophyllum inophyllum plant has great potential to be developed as alternative energy for small diesel engines. In this study, the test fuel used was D100, B100, E5, E10, and E15. The small engine diesel used TG-R180 Diesel with a compression ratio of 20:1 at engine turns 1500, 1800, 2100, and 2400 rpm, and the braking load at a constant prony disc brake is 1,5 kg/cm<sup>2</sup>. The result of the study using E10 fuel can improve engine performance and can reduce the opacity of the exhaust gas. The highest power in the D100 fuel at 2100 rpm is 8,06 PS. The highest thermal efficiency of E10 fuel is 50,29%. The use of Calophyllum inophyllum biodiesel (B100) can reduce exhaust gas opacity in small diesel engines when compared to the use of D100. E10 fuel has the lowest exhaust gas opacity rate of 4,1%.</span></p>

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