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| Study on the Combustion Performance of a Free Piston Linear Generator |
| DOI： |
| Key Words:IC engine free piston linear generator in-cylinder pressure in-cylinder temperature NOxemissions |
| Author Name | Affiliation | | ZENG Dequan,GUO Shuai,ZHANG Chi,ZHAO Fei,SUN Peng,MAO Lianlian | 1.School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200072,China
2.Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo,315201,China |
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| Abstract:A numerical simulation was conducted for the piston dynamic characteristics, cylinder pressure and temperature as well as NOx emissions of a two-stroke gasoline free piston linear generator (FPLG). The source and formation mechanism of NOx emissions were analyzed based on the characteristics of the FPLG. The influence of spark ignition timing and combustion duration on cylinder pressure and temperature as well as NOx emissions was calculated and analyzed by using Matlab/Simulink. Results show that when the ignition timing is 9°～54° before TDC, with a combustion duration of 36°～108° (when sparking time before reaching top dead center is 0 ms～6 ms and combustion duration is 4 ms～ 12 ms), increasing the ignition timing and reducing the combustion duration can increase the cylinder pressure and temperature, with a rapid increase in NOxemissions. |
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