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Influence of High Compression Ratio and Excess Air Ratio on Performance and Emissions of Natural Gas Fuelled SI Engine (CROSBI ID 249777)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Sremec, Mario ; Božić, Mladen ; Vučetić, Ante ; Kozarac, Darko Influence of High Compression Ratio and Excess Air Ratio on Performance and Emissions of Natural Gas Fuelled SI Engine // Thermal science, 22 (2018), 5; 931681, 13. doi: 10.2298/TSCI171222219S

Podaci o odgovornosti

Sremec, Mario ; Božić, Mladen ; Vučetić, Ante ; Kozarac, Darko

engleski

Influence of High Compression Ratio and Excess Air Ratio on Performance and Emissions of Natural Gas Fuelled SI Engine

Compressed natural gas is in automotive industry recognized as one of the “cleanest” fossil fuels which can be used in internal combustion engines with a number of benefits. Since natural gas has much higher octane rating than gasoline it is expected that higher compression ratios can be used. The goal of the research is to determine the change of performance of spark ignited engine with the increase of compression ratio to values similar to compression ignited engine while keeping the exhaust emissions on the acceptable level and avoiding knock combustion. Measurements are performed at compression ratios 12, 16 and 18 at three different values of air excess ratio. Methane with known composition from a pressure cylinder is used instead of natural gas and the results are comprised of indicating results (in-cylinder and intake pressure in a crank angle space), emissions, temperatures and mass flows on various intake and exhaust positions. Analysis of results shows high influence of compression ratio and excess air ratio on combustion, performance and exhaust gas emissions.

Methane, SI Engine, Compression ratio, Natural Gas, CNG

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Podaci o izdanju

22 (5)

2018.

931681

13

objavljeno

0354-9836

2334-7163

10.2298/TSCI171222219S

Povezanost rada

Strojarstvo, Tehnologija prometa i transport

Poveznice
Indeksiranost