Combustion and Noise Characteristics in a Diesel Engine with Hydrogen Addition and Pilot Injection

We experimentally investigated effects of pilot diesel-fuel injection on ignition timing variation and noise reduction in a diesel engine with hydrogen addition to the intake pipe. The pilot diesel-fuel injection suppressed ignition timing variation which was significant under hydrogen addition cond...

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Bibliographic Details
Main Authors: Sakane, Ryota, Fujimura, Toshiki, Seo, Takehiko, Mikami, Masato
Format: Report
Language:English
Online Access:Request full text
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Summary:We experimentally investigated effects of pilot diesel-fuel injection on ignition timing variation and noise reduction in a diesel engine with hydrogen addition to the intake pipe. The pilot diesel-fuel injection suppressed ignition timing variation which was significant under hydrogen addition conditions. The heat release by the pilot diesel-fuel injection stably acted as an ignition source of the hydrogen-air mixture. The maximum in-cylinder pressure rise rate increased with the hydrogen fraction. However, the sound pressure level attained minimum around a specific hydrogen fraction.
ISSN:0148-7191
2688-3627
DOI:10.4271/2015-01-1922