Background and Objectives

Hydrogen, which produced using renewable energy, has been focused for power generation. Hydrogen is one of the most attractive alternative fuels for IC(internal combustion) engines since it does not produce CO2 or HC emissions during the combustion in IC engine. The purpose of this research is to develop the hydrogen-fueled IC engine with optimization of combustion and higher thermal efficiency using experimental and numerical simulation methods.

Overview　

Hydrogen direct-injection spark-ignition engines has been focused due to their high volumetric efficiency and potential to avoid knock, preignition and backfiring. Quantitative measurements of local fuel concentration are conducted by employing spark-induced breakdown spectroscopy (SIBS) technique. Development of CFD analysis method in hydrogen engine has been carried out to achieve higher thermal efficiency.

Expected effects

　This study focuses on clarifying combustion mechanism in hydrogen IC engine for the purpose of achieving higher thermal efficiency. This system will contribute to utilize hydrogen as the energy source  for power generation and gas turbine system.