Experimental Study of Air-Fuel Ratio Control Strategy for a Hydrogen Internal Combustion Engine

2010 ◽  
Author(s):  
Zhong-yu Zhao ◽  
Fu-shui Liu
Keyword(s):  
Experimental Study ◽  
Internal Combustion Engine ◽  
Control Strategy ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Fuel Ratio

Intake Manifold Modeling for the Fuel Metering Control of Spark Ignited Engines

1997 ◽  
Vol 119 (3) ◽  
pp. 568-573
Author(s):  
S. Thompson ◽  
C. Gong
Keyword(s):  
Internal Combustion Engine ◽  
Control Strategy ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Intake Manifold ◽  
Unmodeled Dynamics ◽  
Warm Up ◽  
Fuel Ratio ◽  
Model Improvement ◽  
Manifold Models

In order to minimize emissions the Air-Fuel Ratio (AFR) of a spark-ignited internal combustion engine needs to be maintained at stoichiometric. Whenever the air and fuel enter the engine’s cylinder the AFR cannot be changed; therefore the problem of AFR control is a problem of intake manifold control. Although the problem of AFR control (and hence of intake manifold modelling) appears to be solved for a fully warmed-up engine the problem of AFR control during the warm-up period remains. This paper addresses this problem by using a novel AFR control strategy, which can be based on a given intake manifold model, to test the AFR control of a partially warmed-up engine. The results of engine tests demonstrate that during the warm-up period tight AFR control is not possible using any of the intake manifold models developed for a fully warmed-up engine. This can only be the result of unmodeled dynamics in the intake manifold and it is therefore concluded that further work in the area of manifold modelling is required. Possible areas of model improvement are indicated.

Improved Cleaning of the Engine Cylinder from the Exhaust Gas Using the Active Ejection in the Exhaust Tract

2015 ◽  
Vol 792 ◽  
pp. 553-558
Author(s):  
Leonid Plotnikov ◽  
Boris Zhilkin ◽  
Yuriy Brodov
Keyword(s):  
Experimental Study ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Exhaust Gas ◽  
Gas Velocity ◽  
Engine Cylinder ◽  
Angle Of Rotation

The results of experimental study of the exhaust process of the piston internal combustion engine are presented in the article. A method for improving the cleaning of the cylinder from the exhaust gas on the basis of the effect the ejection is proposed in the paper. Dependences of change of the instantaneous gas velocity on the angle of rotation of the crankshaft in the exhaust tract of a different configuration (with ejector and without it) are listed in the article.

Experimental Study of Emissions and Performance of Internal Combustion Engine Fuels

2010 ◽  
Vol 3 (2) ◽  
pp. 95-100 ◽  
Author(s):  
“Moh’d Sami” Ashhab ◽  
Mahmoud Abu-Zaid ◽  
Odai Baqaeen ◽  
Maraam Khdair ◽  
Eyas Adel
Keyword(s):  
Experimental Study ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
And Performance ◽  
Emissions And Performance
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