A Review on Second Law Analysis of Ignition Delay Period of a Diesel Engine with Hydrogen and LPG as Secondary Fuel
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Hydrogen is an excellent fuel for SI engine due to some unique and desirable properties like fast flame propagation speed, low ignition energy and wide
1) After enrichment of hydrogen with diesel there is negligible change in brake power with respect to pure diesel fuel engine because of constant speed engine
In this experiment dual fuel engine is used where diesel is used as an elementary fuel and LPG (Liquefied Petroleum Gas) is used as a subsidiary fuel to check
As shown in the experiment results, the combustion is dominated by the pilot diesel injection because the split diesel RCCI shows dual fuel or diesel combustion characters
The ignition delay, combustion duration changes little compared to diesel fuel while thermal efficiency is higher than diesel and GDBF; the pressure rise rate and heat release rate
The solution for the dual fuel engine therefore revolves around the diesel injection through a mechanical fuel pump and pilot injection operation through an electronic control
This can be attributed to a short ignition delay and advanced injection timing for biodiesel (because of a high- er bulk modulus which will result in higher speed of sound in the
At low load condition, biodiesel blend showed high emission of smoke then straight diesel and dual fuel operation which may be due to lower carbon availability in LPG dual fuel mode