Port Fuel Injected Hydrogen in Dual Fuel Mode in Direct Injection Diesel Engine

摘要

Hydrogen is expected to be one of the most important fuel in the near future for solving the problem caused by the greenhouse gases, for protecting environment and saving conventional fuels. In this study, a dual fuel engine of hydrogen and diesel was investigated. Hydrogen was conceded through the intake port, and simultaneously air and diesel was pervaded into the cylinder. Using Electronic Gas Injector and Electronic Control Unit (ECU), the injection timing and duration are varied. In this investigation, a single cylinder, KIRLOSKAR AVI, DI Diesel engine was used. Hydrogen injection timing was fixed at TDC and injection duration was timed for 30°, 60°, and 90° crank anglcs. The injection timing of diesel was fixed at 23° BTDC. When hydrogen is mixed with inlet air, emanation of HC, CO and CO_2 decreased without any emission (exhaustion) of smoke while increasing the brake thermal efficiency.