Effect of PCC Channel Angle on Combustion Characteristics of a Marine Dual Fuel Engine

Abstract

The emission requirements of ships in the emission control zone must meet the Tier III emission standards. The low-pressure dual-fuel engine adopts the mid-cylinder premixed intake air and double pre-combustion chambers (PCC) structure, which can achieve high efficiency combustion. In this paper, an effective 3D simulation model is established for a marine low-pressure dual-fuel engine. The effects of the structure of the pre-chamber on the performance of a marine low-pressure dual-fuel engine are investigated from the angle of the pre-chamber channel. The angle of the pre-chamber channel affects the direction of flame propagation. Different flame propagation directions will affect the burning speed. Optimizing the angle of the pre-chamber channel is beneficial to the organization of combustion, increasing the flame propagation speed and reducing the formation of NOx.