scholarly journals EXPERIMENTAL INVESTIGATION OF THE PART-LOAD PERFORMANCE AND EMISSIONS OF A SPARK IGNITION ENGINE FUELLED WITH GASOLINE RON95 AND RON97

2021 ◽  
Author(s):  
Taib Iskandar Mohamad ◽  
How Heoy Geok
Keyword(s):  
Experimental Investigation ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Part Load ◽  
Performance And Emissions

scholarly journals Increasing the Theoretical Efficiency of The Spark-Ignition Engine Cycle by Adding Inert Gas at Part-Load

2021 ◽  
Vol 1888 (1) ◽  
pp. 012009
Author(s):  
Maciej Paluch ◽  
Marcin Noga ◽  
Aleksandra Lisowska
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Inert Gas ◽  
Part Load ◽  
Engine Cycle

scholarly journals Numerical Study of Engine Performance and Emissions for Port Injection of Ammonia into a Gasoline\Ethanol Dual-Fuel Spark Ignition Engine

2021 ◽  
Vol 11 (4) ◽  
pp. 1441
Author(s):  
Farhad Salek ◽  
Meisam Babaie ◽  
Amin Shakeri ◽  
Seyed Vahid Hosseini ◽  
Timothy Bodisco ◽  
...  
Keyword(s):  
Numerical Study ◽  
Combustion Process ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Combustion Model ◽  
Dual Fuel ◽  
Spark Ignition Engines ◽  
Performance And Emissions ◽  
Hc Emissions

This study aims to investigate the effect of the port injection of ammonia on performance, knock and NOx emission across a range of engine speeds in a gasoline/ethanol dual-fuel engine. An experimentally validated numerical model of a naturally aspirated spark-ignition (SI) engine was developed in AVL BOOST for the purpose of this investigation. The vibe two zone combustion model, which is widely used for the mathematical modeling of spark-ignition engines is employed for the numerical analysis of the combustion process. A significant reduction of ~50% in NOx emissions was observed across the engine speed range. However, the port injection of ammonia imposed some negative impacts on engine equivalent BSFC, CO and HC emissions, increasing these parameters by 3%, 30% and 21%, respectively, at the 10% ammonia injection ratio. Additionally, the minimum octane number of primary fuel required to prevent knock was reduced by up to 3.6% by adding ammonia between 5 and 10%. All in all, the injection of ammonia inside a bio-fueled engine could make it robust and produce less NOx, while having some undesirable effects on BSFC, CO and HC emissions.

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