Computer Modelling For 4-Stroke Direct Injection Diesel Engine

Study on computational modeling of 4-stroke single cylinder direct injection diesel engine is presented. The engine with known specification is being modeled using one dimension CFD GT-Power software. The operational parameters of the engine such as power, torque, specific fuel consumption and mean effective pressure which are dependent to engine speed are being discussed. The results from the simulation study are compared with the theoretical results to get the true trend of the results.

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On the Premixed Combustion in a Direct-Injection Diesel Engine

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.3240023 ◽

1987 ◽

Vol 109 (2) ◽

pp. 187-192 ◽

Cited By ~ 16

Author(s):

A. C. Alkidas

Keyword(s):

Diesel Engine ◽

High Speed ◽

Engine Speed ◽

Direct Injection ◽

Premixed Combustion ◽

Injection Timing ◽

Oxides Of Nitrogen ◽

Nitrogen Emissions ◽

Direct Injection Diesel Engine ◽

Diffusion Burning

The factors influencing premixed burning and the importance of premixed burning on the exhaust emissions from a small high-speed direct-injection diesel engine were investigated. The characteristics of premixed and diffusion burning were examined using a single-zone heat-release analysis. The mass of fuel burned in premixed combustion was found to be linearly related to the product of engine speed and ignition-delay time and to be essentially independent of the total amount of fuel injected. Accordingly, the premixed-burned fraction increased with increasing engine speed, with decreasing fuel-air ratio and with retarding injection timing. The hydrocarbon emissions did not correlate well with the premixed-burned fraction. In contrast, the oxides of nitrogen emissions were found to increase with decreasing premixed-burned fraction, indicating that diffusion burning, and not premixed burning, is the primary source of oxides of nitrogen emissions.

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Fuel Effects on Combustion and Emissions of a Direct-Injection Diesel Engine Operating at Moderate to High Engine Speed and Load

10.4271/2012-01-0863 ◽

2012 ◽

Cited By ~ 3

Author(s):

James Szybist ◽

Patrick Szymkowicz ◽

William F. Northrop

Keyword(s):

Diesel Engine ◽

Engine Speed ◽

Direct Injection ◽

Direct Injection Diesel Engine ◽

High Engine Speed ◽

Fuel Effects

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Experimental and simulation study of in-cylinder strategies for regeneration of lean nitrogen oxide traps in a high-speed direct-injection diesel engine

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/0954407013504751 ◽

2013 ◽

Vol 227 (12) ◽

pp. 1661-1673

Author(s):

Mostafa Koochak ◽

Ayatallah Gharehghani ◽

Mahdi Shahbakhti

Keyword(s):

Diesel Engine ◽

Nitrogen Oxide ◽

Simulation Study ◽

High Speed ◽

Direct Injection ◽

Direct Injection Diesel Engine ◽

Lean Nitrogen Oxide Traps ◽

Oxide Traps

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Effect of diesel-biodiesel-ethanol blend on combustion, performance, and emissions characteristics on a direct injection diesel engine

Thermal Science ◽

10.2298/tsci160913275j ◽

2017 ◽

Vol 21 (1 Part B) ◽

pp. 591-604 ◽

Cited By ~ 23

Author(s):

Arkadiusz Jamrozik ◽

Wojciech Tutak ◽

Michał Pyrc ◽

Michał Sobiepański

Keyword(s):

Diesel Engine ◽

Direct Injection ◽

Biodiesel Fuel ◽

Effective Pressure ◽

Ethanol Fuel ◽

Fuel Blend ◽

Full Load ◽

Direct Injection Diesel Engine ◽

Indicated Mean Effective Pressure ◽

Partial Load

The paper presents results of co-combustion of diesel-biodiesel-ethanol fuel blend in direct injection Diesel engine. Test was performed at constant rotational speed at three commonly used loads of this engine: 100%, 85%, and 70% of load. During the test hydrated ethanol was used at a concentration of 89% of alcohol. In this study, the ethanol fuel was added to diesel-biodiesel fuel blend with concentrations up to 50% with the increment of 5%. The biodiesel was used as an additive to pre-vent the stratification of ethanol and diesel blends. Thermodynamic parameters of engine were analyzed, and combustion process and exhaust emission were characterized. It turned out that with the increase in engine load is possible to utilize larger ethanol fraction in blend. With the increase of ethanol fuel in blend the in-crease in ignition delay (38.5% for full load) was observed, but burning duration decreased (49% for full load). The ethanol fuel share in blend generally causes the increase in NOx emission (42% for full load) due to higher oxygen content and higher in-cylinder temperatures. It turned out that, at full load the unrepeatability of indicated mean effective pressure was near the same up to 50% of ethanol fuel in blend (about 2%). In case of partial load at higher ethanol fuel fraction the in-crease in indicated mean effective pressure un-repeatability was observed.

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Spray combustion simulation study of waste cooking oil biodiesel and diesel under direct injection diesel engine conditions

Fuel ◽

10.1016/j.fuel.2020.117240 ◽

2020 ◽

Vol 267 ◽

pp. 117240 ◽

Cited By ~ 2

Author(s):

Olawole Abiola Kuti ◽

S. Mani Sarathy ◽

Keiya Nishida

Keyword(s):

Diesel Engine ◽

Simulation Study ◽

Direct Injection ◽

Waste Cooking Oil ◽

Spray Combustion ◽

Direct Injection Diesel Engine ◽

Cooking Oil ◽

Combustion Simulation

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Experimental Study of Heat Transfer in a Direct Injection Diesel Engine

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.12.1.18 ◽

2020 ◽

Vol 12 (1) ◽

Author(s):

P. Raghu ◽

R. Sundarrajan ◽

R. Rajaraman ◽

M. Ramaswamy ◽

B. Sathyanaryanan

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

Diesel Engine ◽

Heat Transfer Rate ◽

Transfer Rate ◽

Engine Speed ◽

Direct Injection ◽

Cylinder Wall ◽

Direct Injection Diesel Engine ◽

Wide Range

An experimental study has been established to understand the effective cylinder wall heat transfer rate and temperature of a direct injection diesel engine. Temperatures were calculated under a wide range of load at different locations in the cylinder block and cylinder head of the engine using pre-arranged thermocouples to acquire the temperature gradient and consequently realize the equivalent heat transfer rate, cylinder wall temperatures, heat transfer co-efficient and engine speed. Diesel and biodiesel blends (B20 and B100) are used as fuels and the temperature readings are found using a ‘k-type’ thermocouple and temperature readings are noted. Raise in the cylinder temperature is observed as the engine torque increases for the diesel and biodiesel. As the engine speed increases, the exhaust gas velocity involved in and out of the engine will increases and this lead to an increase in the heat transfer co-efficient for diesel and biodiesel.

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