Z180/T船用单一LNG燃料发动机研发

张洪祥，李杰，肖龙波，魏学涛，杨尚刚，荆涛

淄柴机器有限公司，山东 淄博   255086

摘要：为满足缸径小于200 mm、功率不低于600 kW的单一气体燃料发动机船用主机市场需求，以Z6180双燃料发动机为原型机，基于模块化设计思想，设计发动机的空气系统、燃气系统和控制系统，开发一款缸径为180 mm的单一燃料船用液化天然气（liquefied natural gas，LNG）发动机，基于《船舶发动机排气污染物排放限值及测量方法（中国第二阶段）》要求对发动机进行2 000 h的排放耐久性试验。试验结果表明：开发的LNG燃料发动机满足设计要求，天然气供气系统及发动机全工况燃气精准控制策略耐用可靠，排放指标达到船舶发动机国二标准限值要求。

关键词：供气系统；耐久性试验；LNG发动机；控制策略

Development of Z180/T marine single LNG engine

ZHANG Hongxiang, LI Jie, XIAO Longbo, WEI Xuetao, YANG Shanggang, JING Tao

Zichai Machinery Co., Ltd., Zibo 255086, China

Abstract: In order to meet the market demand for single gas marine engines with the cylinder diameter less than 200 mm and the power greater than 600 kW, the Z6180 dual fuel engine is used as the parent engine，based on modular design ideas, the air system, gas system, and control system of the engine are designed. A single fuel marine liquefied natural gas (LNG) engine with a cylinder diameter of 180 mm is developed. According to the requirements of “Emission Limits and Measurement Methods for Marine Engine Exhaust Pollutants (China Phase II)”, a 2 000 h emission durability test is conducted on the engine. The test results show that the developed LNG engine meets the design requirements, the natural gas supply system and the precise gas control strategy for the engine under all operating conditions are durable and reliable, and the emission indicators meet the requirements of the National Standard II for ship engines.

Keywords: gas supply system; durability test; LNG engine; control strategy