Effects of Fuel Injection Timing on Operation Characteristics of Small Diesel Engines with EGR Using BDF

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  • BDFを用いた小型ディーゼルエンジンにおいて燃料噴射時期が運転特性に及ぼす影響

Abstract

The biofuel used in diesel engines (BDF) has a higher kinematic viscosity and ignition point than gas oil. Therefore, it is considered to be disadvantageous for fuel injection systems. The purpose of the study we conducted was to understand the effects of oxygen in fuel in the combustion process of diesel engines. To this end, engine performance testing using BDF and gas oil was performed. As a result, although there was a difference in the exhaust gas characteristics between using gas oil and using BDF, the brake thermal efficiencies of both were the same. Therefore, there is a possibility that the differences in combustion conditions during the combustion period do not significantly affect the engine output generation. This study conducted a performance test of changing the fuel injection timing using gas oil and BDF in a small diesel engine, confirming the effects of fuel ignitability on the ignition delay.

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