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.

Study of the steady flow produced by direct injection diesel engine intake ports

2001 ◽  
Vol 215 (2) ◽  
pp. 285-298 ◽  
Author(s):  
J M Desantes ◽  
J V Pastor ◽  
A Doudou
Keyword(s):  
Spectral Analysis ◽  
Diesel Engine ◽  
Flow Field ◽  
Steady Flow ◽  
Cylinder Head ◽  
Laser Doppler Anemometry ◽  
Direct Injection ◽  
Valve Lift ◽  
Turbulent Structures ◽  
Direct Injection Diesel Engine

In this paper laser Doppler anemometry is used to characterize the steady flow field inside the cylinder generated by the two intake ports of a four-valve diesel head over the whole valve lift range and to compare the patterns at two different sections commonly used for global characterization in order to decide which is more appropriate for cylinder head evaluation. A more detailed investigation is performed for two valve lifts where the change in the flow patterns is more evident by applying a spectral analysis with the local normalized slotting technique to study the turbulent structures accompanying the in-cylinder swirl development.

SPRAY CHARACTERISTICS IN A DIRECT-INJECTION DIESEL ENGINE

1996 ◽  
Vol 6 (1) ◽  
pp. 95-109 ◽  
Author(s):  
H. C. Yang ◽  
Hong Sun Ryou ◽  
Y. T. Jeong ◽  
Young Ki Choi
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Spray Characteristics ◽  
Direct Injection Diesel Engine

scholarly journals Effects of pilot injection timing and EGR on a modern V6 common rail direct injection diesel engine

2013 ◽  
Vol 50 ◽  
pp. 012008 ◽  
Author(s):  
Nik Rosli Abdullah ◽  
Rizalman Mamat ◽  
Miroslaw L Wyszynski ◽  
Anthanasios Tsolakis ◽  
Hongming Xu
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Common Rail ◽  
Injection Timing ◽  
Pilot Injection ◽  
Direct Injection Diesel Engine

Predicted Paths of Soot Particles in the Cylinders of a Direct Injection Diesel Engine

2012 ◽  
Author(s):  
Wan Mohd Faizal Wan Mahmood ◽  
Antonino LaRocca ◽  
Paul J. Shayler ◽  
Fabrizio Bonatesta ◽  
Ian Pegg
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Soot Particles ◽  
Direct Injection Diesel Engine

Effect of altitude conditions on combustion and performance of a turbocharged direct-injection diesel engine

2021 ◽  
pp. 095440702110262
Author(s):  
Zhentao Liu ◽  
Jinlong Liu
Keyword(s):  
Diesel Engine ◽  
High Altitude ◽  
Diesel Engines ◽  
Direct Injection ◽  
Pressure Rise ◽  
Ambient Conditions ◽  
Allowable Limit ◽  
Spray Formation ◽  
Direct Injection Diesel Engine ◽  
And Performance

Market globalization necessitates the development of heavy duty diesel engines that can operate at altitudes up to 5000 m without significant performance deterioration. But the current scenario is that existing studies on high altitude effects are still not sufficient or detailed enough to take effective measures. This study applied a single cylinder direct injection diesel engine with simulated boosting pressure to investigate the performance degradation at high altitude, with the aim of adding more knowledge to the literature. Such a research engine was conducted at constant speed and injection strategy but different ambient conditions from sea level to 5000 m in altitude. The results indicated the effects of altitude on engine combustion and performance can be summarized as two aspects. First comes the extended ignition delay at high altitude, which would raise the rate of pressure rise to a point that can exceed the maximum allowable limit and therefore shorten the engine lifespan. The other disadvantage of high-altitude operation is the reduced excess air ratio and gas density inside cylinder. Worsened spray formation and mixture preparation, together with insufficient and late oxidation, would result in reduced engine efficiency, increased emissions, and power loss. The combustion and performance deteriorations were noticeable when the engine was operated above 4000 m in altitude. All these findings support the need for further fundamental investigations of in-cylinder activities of diesel engines working at plateau regions.

Sign in / Sign up

Export Citation Format

Share Document