Particle Number Emissions: An Analysis by Varying Engine/Exhaust-System Design and Operating Parameters

2011 ◽  
Author(s):  
Stefano Cordiner ◽  
Francesco mecocci ◽  
Vincenzo Mulone ◽  
Vittorio Rocco
Keyword(s):  
System Design ◽  
Particle Number ◽  
Exhaust System ◽  
Operating Parameters ◽  
Engine Exhaust

Engine exhaust system design based on heat transfer computation

1999 ◽  
Vol 40 (10) ◽  
pp. 1057-1072 ◽  
Author(s):  
I.P. Kandylas ◽  
A.M. Stamatelos
Keyword(s):  
Heat Transfer ◽  
System Design ◽  
Exhaust System ◽  
Engine Exhaust

Characteristics of Particulate Matter Emissions on Diesel Passenger Vehicles Fueled with GTL Based on Real-Road Operating Parameters

2012 ◽  
Vol 534 ◽  
pp. 253-260
Author(s):  
Di Ming Lou ◽  
Yi Zhou Zhao ◽  
Yuan Hu Zhi ◽  
Pi Qiang Tan ◽  
Yan Juan Zhu
Keyword(s):  
Particulate Matter ◽  
Particle Number ◽  
Emission Rate ◽  
Volume Ratio ◽  
Specific Power ◽  
Operating Parameters ◽  
Emission Characteristics ◽  
Mixture Ratio ◽  
Passenger Vehicles ◽  
Particulate Matter Emissions

An on-board experimental research was made on diesel passenger vehicles fueled with national IV diesel, gas-to-liquid (GTL) fuel and three other different volume ratio of mixed fuel (G10D90, G20D80, G50D50) about the regularity of Particulate Matter (PM) emission characteristics changing with velocity, acceleration and vehicle specific power (VSP). The experimental results show that: PM emission rate increases gradually with higher velocity; acceleration leads to the deterioration of emissions; curves concave at the point when VSP value equals zero. Moreover, the emission rate of particle number decreases 50% to 60% while that of particle mass decreases 30% to 45% when the volumetric mixture ratio of GTL fuel improves. It is obvious that GTL fuel improves the characteristics of PM emission significantly, making it one of the promising clean alternative fuel.

scholarly journals Analysis of Engine Exhaust Pressure Wave Performance

2017 ◽  
Vol 1 (1) ◽  
pp. 10
Author(s):  
Yang Wu ◽  
He Ma
Keyword(s):  
Pressure Wave ◽  
Working Condition ◽  
Exhaust System ◽  
Propagation Process ◽  
Engine Exhaust ◽  
Work Cycle ◽  
Negative Effect ◽  
Harmonic Components ◽  
Exhaust Pressure Wave ◽  
Four Cylinders

By analyzing the form of pressure wave within automotive exhaust system and relationship between propagation process and working condition of engine, simulate a work cycle for purpose of timely diagnosing troubles, thus presenting exhaust stroke of four cylinders through pressure wave; modifying of the speed of engine will affect the amplitude of pressure wave, harmonic components, phase position and other parameters; at the end of the exhaust stroke, exhaust pressure wave generates interference, superposition and negative effect, which is of great importance for analysis and diagnosis of engine troubles by using exhaust pressure wave.

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