Development Approach for the Investigation of Homogeneous Charge Compression Ignition in a Free-Piston Engine

2013 ◽  
Author(s):  
Johannes Haag ◽  
Florian Kock ◽  
Marco Chiodi ◽  
Oliver Mack ◽  
Michael Bargende ◽  
...  
Keyword(s):  
Homogeneous Charge Compression Ignition ◽  
Compression Ignition ◽  
Piston Engine ◽  
Free Piston ◽  
Free Piston Engine ◽  
Development Approach ◽  
Homogeneous Charge

Development Approach of a Spark-Ignited Free-Piston Engine Generator

2014 ◽  
Author(s):  
Boru Jia ◽  
Zhengxing Zuo ◽  
Huihua Feng ◽  
Guohong Tian ◽  
A. P. Roskilly
Keyword(s):  
Piston Engine ◽  
Free Piston ◽  
Free Piston Engine ◽  
Development Approach

scholarly journals Influence of hydrogen as a fuel additive on combustion and emissions characteristics of a free piston engine

2020 ◽  
Vol 24 (1 Part A) ◽  
pp. 87-99
Author(s):  
Mohammad Alrbai ◽  
Bashar Qawasmeh ◽  
Sameer Al-Dahidi ◽  
Osama Ayadi
Keyword(s):  
Heat Release ◽  
Heat Release Rate ◽  
Release Rate ◽  
Ignition Delay ◽  
Combustion Characteristics ◽  
Fuel Additive ◽  
Compression Ignition ◽  
Piston Engine ◽  
Free Piston ◽  
Free Piston Engine

It has been shown that using fuel additives play an important role in enhancing the combustion characteristics in terms of efficiency and emissions. In addition, free piston engines have shown capable in reducing energy losses and presenting more efficient and reliable engines. In this context, the objective of the present work is to investigate the effect of using hydrogen as a fuel additive in natural gas homogeneous charge compression ignition free piston engine. To this aim, two models have been iteratively coupled: the combustion model that is used to calculate the heat release of the combustion and the scavenging model that is employed to determine the in-cylinder mixture state after scavenging in terms of its homogeneity and species mass fractions and to obtain the finial pressure and temperature of the in-cylinder mixture. In the former model, the 0-D approach through Cantera toolkit has been considered due to the fact that homogeneous charge compression ignition combustion is very rapid and the fuel-air mixture is well-homogenous, whereas in the latter model, 3-D-CFD approach through AN-SYS FLUENT software is considered to ensure precise calculations of the species exchange at the end of each engine cycle. The effect of hydrogen as a fuel additive has been quantified in terms of the combustion characteristics (e. g., ignition delay, heat release rate, engine overall efficiency and emissions, etc.). It has been shown that hydrogen addition reduces ignition delay time, decreases the in-cylinder peak pressure, while allowing the engine to operate with higher mechanical efficiency as it has high heat release rate, increases the NOx emission levels of the engine, but decreases the CO levels

scholarly journals Homogeneous Charge Compression Ignition Free Piston Linear Alternator

10.2172/5977 ◽  
1998 ◽  
Author(s):  
Janson Wu ◽  
Nicholas Paradiso ◽  
Peter Van Blarigan ◽  
Scott Goldsborough
Keyword(s):  
Homogeneous Charge Compression Ignition ◽  
Compression Ignition ◽  
Free Piston ◽  
Linear Alternator ◽  
Homogeneous Charge
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