Research on Achievement of Both Thermal Efficiency Enhancement and NOx Reduction in Natural Gas Lean-burn Engine (Third Report)

- Efficiency Verification from the Viewpoint of Engine Output -

Abstract

We are studying lean combustion of natural gas engine, in order to reduce environmental load. Previously, we proposed the ultra-lean rapid two layer combustion concept, which used an engine equipped with a direct injection injector in the sub-chamber, for the purpose of improving thermal efficiency and reducing NOx. In this research, we investigated the effect of this concept on engine output, and, as a result, have increased power by improvement in combustion speed in high revolution area.