Study of the Diesel Engine Cycle Variability at LPG Fuelling

2016 ◽  
pp. 371-378
Author(s):  
Liviu Nemoianu ◽  
Alexandru Cernat ◽  
Constantin Pana ◽  
Niculae Negurescu ◽  
Cristian Nutu
Keyword(s):  
Diesel Engine ◽  
Engine Cycle

Flow in the Inlet Manifold of a Production Diesel Engine

1989 ◽  
Vol 203 (1) ◽  
pp. 39-49 ◽  
Author(s):  
C Arcoumanis ◽  
J H Whitelaw ◽  
P Flamang
Keyword(s):  
Diesel Engine ◽  
Laser Doppler Anemometry ◽  
Direct Injection ◽  
Radial Velocities ◽  
Laser Doppler ◽  
Direct Injection Diesel Engine ◽  
Inlet Manifold ◽  
Spatial Locations ◽  
Engine Cycle

The flow in the inlet manifold of a Ford direct injection diesel engine has been characterized by laser Doppler anemometry under motored conditions at engine speeds between 300 and 1100 r/min. Plexiglass windows have been inserted at three locations in adjacent manifold branches of the four-cylinder engine and back-scatter LDA was used to provide information about the ensemble-averaged and in-cycle axial and radial velocities at various spatial locations within the inlet channels during the engine cycle.

Experimental and theoretical study of particulate re-entrainment from the combustion chamber walls of a diesel engine

1997 ◽  
Vol 211 (1) ◽  
pp. 49-57 ◽  
Author(s):  
M Abu-Qudais ◽  
D. B. Kittelson
Keyword(s):  
Particulate Matter ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Mass Concentration ◽  
High Surface ◽  
Combustion Process ◽  
Surface Shear ◽  
Time Resolved ◽  
Soot Deposition ◽  
Engine Cycle

The purpose of this research was to investigate the influence of the in-cylinder surfaces on the net emission of the particulate matter in the exhaust of a single cylinder, diesel engine. In order to obtain this information, time-resolved sampling was done to characterize the particulate matter emitted in the engine exhaust. A rotating probe sampled the free exhaust plume once each engine cycle. The rotation of the probe was synchronized with the engine cycle in such a way that the samples could be taken at any predetermined crank angle degree window. The sampling probe was designed for isokinetic sampling in order to obtain reliable results. To characterize the exhaust particulate in real time, a filter for mass concentration measurements was used. The results showed about 45 per cent higher mass concentrations as well as particles of larger diameter emitted during blowdown than late in the displacement phase of the exhaust stroke. This suggests that high in-cylinder shear rates and velocities which are associated with the blowdown process, cause the deposited soot to be re-entrained from the surfaces of the combustion chamber, where re-entrainment is favoured by conditions of high surface shear. A mathematical model to predict the amount of soot re-entrained from the cylinder walls is presented. This model is based on information presented in the literature along with the results of the time-resolved measurements of mass concentration. This model supported the hypothesis of soot deposition during the combustion process, with subsequent re-entrainment during the blowdown process of the exhaust stroke.

Effect of Pre-Injection Fuel Temperature upon Diesel Engine Ignition Delay and Soot Emission

1973 ◽  
Vol 187 (1) ◽  
pp. 395-404 ◽  
Author(s):  
R. W. Tempk-Pediani
Keyword(s):  
Critical Temperature ◽  
Diesel Engine ◽  
Ignition Delay ◽  
Diesel Oil ◽  
Soot Emission ◽  
Liquid Droplets ◽  
Ambient Conditions ◽  
Fuel Temperature ◽  
Injection Equipment ◽  
Engine Cycle

The effect of pre-injection fuel temperature upon the ignition delay and soot emission has been investigated on an i.d.i. engine running on diesel oil. Effects of evaporation in the engine cycle, at both subcritical and supercritical pressures, are discussed and attention focused on the probable attainment of the critical temperature by liquid droplets in certain ambient conditions. Stress is laid on the future need concurrently to optimize the injection equipment and the level of air swirl to realize the potential of fuel preheating.

scholarly journals On the Changes of the Diesel Engine Cycle

1935 ◽  
Vol 1 (4) ◽  
pp. 303-304
Author(s):  
Gonpaty ASAKAWA
Keyword(s):  
Diesel Engine ◽  
Engine Cycle

Effect of Pre-Injection Fuel Temperature upon Diesel Engine Ignition Delay and Soot Emission

1973 ◽  
Vol 187 (1) ◽  
pp. 395-404 ◽  
Author(s):  
R. W. Tempk-Pediani
Keyword(s):  
Critical Temperature ◽  
Diesel Engine ◽  
Ignition Delay ◽  
Diesel Oil ◽  
Soot Emission ◽  
Liquid Droplets ◽  
Ambient Conditions ◽  
Fuel Temperature ◽  
Injection Equipment ◽  
Engine Cycle

The effect of pre-injection fuel temperature upon the ignition delay and soot emission has been investigated on an i.d.i. engine running on diesel oil. Effects of evaporation in the engine cycle, at both subcritical and supercritical pressures, are discussed and attention focused on the probable attainment of the critical temperature by liquid droplets in certain ambient conditions. Stress is laid on the future need concurrently to optimize the injection equipment and the level of air swirl to realize the potential of fuel preheating.

scholarly journals The Influence of LPG Fuelling on Diesel Engine Cycle Variability

2016 ◽  
Vol 22 ◽  
pp. 746-753 ◽  
Author(s):  
Alexandru Cernat ◽  
Constantin Pana ◽  
Niculae Negurescu ◽  
Cristian Nutu
Keyword(s):  
Diesel Engine ◽  
Engine Cycle

Friction Power Measurements of a Fired Diesel Engine Cycle-Relevant CO2 Saving

MTZ worldwide ◽  
2011 ◽  
Vol 72 (12) ◽  
pp. 24-29 ◽  
Author(s):  
Thomas Deuß ◽  
Holger Ehnis ◽  
Mike Bassett ◽  
Andre Bisordi
Keyword(s):  
Diesel Engine ◽  
Friction Power ◽  
Power Measurements ◽  
Engine Cycle
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