基础数据 Basic data

发动机型号 Engine model ........................................................................................12M33D900E310NG

气缸/气门数量 N°of Cylinders / Valves................................................................................................. 12 / 48

气缸分布型式 Cylinders arrangement ..........................................................................................V 形 V-engine

缸径×行程 Bore x Stroke (mm) ....................................................................................................150 x 185

排量 Displacement (L) ................................................................................................................................39.2

活塞平均速度 Mean Piston Speed (m/s) ........................................................................................................... 9.25

平均有效压力 BMEP (Bar) ...............................................................................................................18.37

燃料 Fuel .................................................... 管道天然气-甲烷浓度≥80%Pipeline Natural Gas - MN ≥ 80

冷却系统 Cooling System .................................................液体（水＋50%冷却液）Liquid (water + 76% antifreeze)

喷射系统 Injection System ...........................................................................................开式燃烧室 Open Chamber

燃油系统型式 Fuel System ..................................................... 稀薄燃烧、火花塞点火 Lean Burn Spark Ignited

进气形式 Aspiration ............................................................................. 增压中冷 Turbocharged and Intercooled

压缩比 Compression ratio ....................................................................................................................11 : 1

飞轮壳 Flywheel housing ...................................................................................................................... SAE 0

飞轮 Flywheel ........................................................................................................................................... 18"

飞轮齿圈齿数 N° of teeth on flywheel ring gear...........................................................................................194

飞轮转动惯量 Inertia of flywheel (kg/m²).......................................................................................7.18

曲轴转动惯量 Inertia of crankshaft (kg/m²) ........................................................................................................4.52

排放 Emission ............................................................................................N/A

发动机尺寸(长×宽×高) Overall Dimensions withoutout radiator (Length x Width x Height) (mm) 2651x 1338 x 1631 以外形图为准 The outer chart shall prevail

发动机干重 Engine dry weight (without radiator）(kg)................................................................................3390

发动机湿重 Engine wet weight (includes oil, coolant) (kg) ...................................................................................../

极限环境使用温度 Max ambient temperature restriction (°C) ¹...............................................................40

¹ The indicated value is based on an ATB value of 40°C for an engine tested at 100% of the COP Power, in an open condition, without an

enclosure or container, without any airflow obstruction in the front of the radiator, without air recirculation, withfree exhaust gas exit and

with the engine thermostatic valve in its full open condition, without a closing plate present.

1数据单中所指极限使用环境温度40 °C为发动机在以下工况下测得：100%COP功率下进行测试，在开式环境下，无外壳及箱体，

散热器前无气流堵塞及气流循环，排气口完全敞开，节温器全开。