Effect of instantaneous rotational speed on the analysis of measured diesel engine cylinder pressure data

2012 ◽  
Vol 60 ◽  
pp. 87-95 ◽  
Author(s):  
Antonis K. Antonopoulos ◽  
Dimitrios T. Hountalas
Keyword(s):  
Diesel Engine ◽  
Rotational Speed ◽  
Cylinder Pressure ◽  
Pressure Data ◽  
Engine Cylinder

One-Dimensional Simulation of the Combustion Process in an Engine Cylinder with Ethanol

2014 ◽  
Vol 660 ◽  
pp. 447-451
Author(s):  
Akasyah M. Kathri ◽  
Rizalman Mamat ◽  
Amir Aziz ◽  
Azri Alias ◽  
Nik Rosli Abdullah
Keyword(s):  
Diesel Engine ◽  
Alternative Fuels ◽  
Engine Speed ◽  
Combustion Process ◽  
Cylinder Pressure ◽  
Ethanol Fuel ◽  
One Dimensional ◽  
Engine Cylinder ◽  
Dimensional Simulation ◽  
The One

The diesel engine is one of the most important engines for road vehicles. The engine nowadays operates with different kinds of alternative fuels, such as natural gas and biofuel. The aim of this article is to study the combustion process that occurs in an engine cylinder of a diesel engine when using biofuel. The one-dimensional numerical analysis using GT-Power software is used to simulate the commercial four-cylinder diesel engine. The engine operated at high engine load and speed. The ethanol fuel used in the simulation is derived from the conventional ethanol fuel properties. The analysis of simulations includes the cylinder pressure, combustion temperature and rate of heat release. The simulation results show that in-cylinder pressure and temperature for ethanol is higher than for diesel at any engine speed. However, the mass fraction of ethanol burned is similar to that of diesel. MFB only affects the engine speed.

Direct Injection Diesel Engine Cylinder Pressure Modelling via NARMA Identification Technique

2005 ◽  
Author(s):  
Olivier Grondin ◽  
Christophe Letellier ◽  
Jean Maquet ◽  
Luis Antonio Aguirre ◽  
Frédéric Dionnet
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Cylinder Pressure ◽  
Direct Injection Diesel Engine ◽  
Engine Cylinder ◽  
Identification Technique

Experiments With Coal Fuels in a High-Temperature Diesel Engine

1988 ◽  
Vol 110 (3) ◽  
pp. 444-452 ◽  
Author(s):  
W. E. Likos ◽  
T. W. Ryan
Keyword(s):  
High Temperature ◽  
Diesel Fuel ◽  
Operating Conditions ◽  
Coal Slurry ◽  
Pilot Injection ◽  
Cylinder Pressure ◽  
Pressure Data ◽  
Engine Cylinder ◽  
Burning Rates ◽  
Low Heat Rejection Engine

The combustion of 50 wt percent coal slurries, using water, diesel fuel, and methanol as carrier liquids, was investigated in a single-cylinder research engine. High temperatures were achieved in the engine cylinder using low-heat-rejection engine technology, electrically heated glow plugs, and heated inlet air. Comparisons of the fuels and different methods of providing high cylinder temperature were made using cylinder pressure data and heat release calculations. Autoignition of the coal/water slurries was attained using auxiliary heat input. The burning rates of all the autoignited slurries were significantly enhanced by using a pilot injection of diesel fuel. Under some operating conditions the engine thermal efficiency was equal to diesel fuel performance. It was apparent that engines designed for coal slurry should maximize the prechamber volume.

Combustion Characteristic of a Diesel Engine Operating with Methanol as Alternative Fuel

2014 ◽  
Vol 660 ◽  
pp. 452-456 ◽  
Author(s):  
Akasyah M. Kathri ◽  
Rizalman Mamat ◽  
Amir Aziz ◽  
Azri Alias ◽  
Nik Rosli Abdullah
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Combustion Characteristic ◽  
Cylinder Pressure ◽  
Compression Ignition Engine ◽  
Engine Cylinder ◽  
Rate Of Heat Release ◽  
Fuel Mass Fraction ◽  
The One

Modelling the compression ignition engine mostly depends on fuel characteristics. The proses involve a model of the real system and carry out experiment as a mean of comparison to understand the behaviour of the system. The diesel engine nowadays operated with different kind of alternative fuels such as natural gas and biofuel. The aim of this article is to study the combustion characteristic occurred in an engine cylinder of a diesel engine when using biofuel. The one-dimensional numerical analysis using GT-Power software is used to simulate the diesel engine. The engine operated at full engine load and difference speed. The methanol fuel used in the simulation is derived from the conventional methanol fuel properties. The analysis of simulations includes the cylinder pressure, combustion temperature and rate of heat release. The simulation result shows that in-cylinder pressure for methanol is slightly higher than diesel fuel in any speed of the engine. It also found that the combustion characteristic on methanol temperature is higher at all crank angle degree of diesel fuel. Mass fraction burns of methanol are much lower than diesel fuel, but burns faster than diesel fuel.

Experimental Study of Diesel Engine Cycle-to-Cycle Variation—Part I: Analysis of Cycle-to-Cycle Cylinder Pressure Variation

1989 ◽  
Vol 33 (03) ◽  
pp. 252-259
Author(s):  
C. Chayangkura ◽  
R. Latorre ◽  
D. Charnews
Keyword(s):  
Diesel Engine ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Maximum Pressure ◽  
Cylinder Pressure ◽  
Cycle Variation ◽  
Engine Cylinder ◽  
Marine Diesel ◽  
Test Engine ◽  
Good Agreement

With the increased use of marine diesel engines, engine-induced vibration has become an important problem. The vibration is caused by engine output variation, which has not been fully documented. In this paper the results of an analysis of the cycle-to-cycle variation in the cylinder pressure of a single-cylinder diesel test engine are presented. Data covering tests with different compression ratio settings and speeds are analyzed in terms of (a) cycle-to-cycle variation in maximum cylinder pressure Pmax and (b) cycle-to-cycle variation in the combustion work, denoted PI. Special tests are made to validate the data acquisition and data reduction system. The validation shows that the cylinder pressure measurements from the test engine run as a spark-ignition engine are in good agreement with published results. Analysis of the diesel engine test measurements show that the coefficient of variation in the diesel engine cylinder pressure is smaller than the spark-ignition engine value. These results also show there is relatively little correlation between the cycle-to-cycle coefficient for variation of the maximum pressure and the corresponding variation in the combustion work, PI.

Preliminary Energy-Efficiency Analysis on Multi-Pulse Injection Schedule in a Diesel Engine

2005 ◽  
Author(s):  
Raj Kumar ◽  
Ming Zheng ◽  
Graham T. Reader
Keyword(s):  
Energy Efficiency ◽  
Diesel Engine ◽  
Heat Release ◽  
Fuel Injection ◽  
Efficiency Analysis ◽  
Simulation Software ◽  
Cylinder Pressure ◽  
Pressure Data ◽  
Exhaust Temperature ◽  
Energy Efficiency Analysis

The multi-pulse fuel injection in a diesel engine is considered an effective way to reduce nitrogen oxides (NOx) emissions by heat-release shaping. In this research a preliminary energy efficiency analysis has been conducted for various split injection rates and schedules using the in-house and the commercial engine simulation software. Theoretical findings have been validated using experimentally obtained cylinder pressure data for various injection timings from a single-cylinder engine. The theoretical analysis on the shape of heat- release has been made to evaluate the energy efficiency of the post injection pulses on the engine exhaust temperature increases. An investigation of the cycle-to-cycle variation has also been performed for the measured cylinder pressure data.

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