Abstract
The experimental study was performed on a single-cylinder, four-stroke automotive CI engine. The hydrogen gas was inducted into the intake system of engine and diesel was inducted directly inside the cylinder of diesel engine. The optimum hydrogen energy share (HES) without knocking in the hydrogen-diesel-fueled engine at the speed of 2400 rpm with maximum torque is limited to 57%. The hydrogen energy share (HES) without knocking is extended to 65% using 25% exhaust gas recirculation (EGR). Brake thermal efficiency with EGR increases significantly. The emissions of NOx decreased to zero level with EGR. The zero level of HC emission was achieved with and without EGR. CO emission also lower compared to without EGR. The hydrogen-fueled diesel engine with EGR could operate with higher hydrogen energy share with lower emissions compared to conventional mode.
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