20V190型天然气发动机是以济柴公司16V燃气机为原型，研制出的一种适用于低压燃气、高智能化、热耗低、可靠性高、低排放、长寿命的20缸V型天然气机，是一种2000kW以上大功率高性能天然气发动机。

20V190 gas engine is designed and manufactured with the 16V gas engine as the model sample. It is a 2000KW higher-power, high performance 20V gas engine which can adopt to low pressure fuel gas, high intelligence, low heat consumption,high stability, low emission and long usage life.

发动机参数：Main technical specifications for engine

型号 Model	20V 190发动机20V 190 Engine
燃料 Fuel	天然气 Natural gas /
型式Type	四冲程，火花塞点火、高增压、中冷 four stroke plug ignition, water cooled, turbo-turbocharged and after-cooled
气缸数及排列方式 No. of Cylinder & Cylinder Arrangement	20缸V型 20-Cylinder,V-type
缸径×冲程Bore ×Stroke	190mm×255mm
额定转速 Rated speed	1000r/min
额定功率 Rated power	2200kW
供气压力 Supply gas pressure	1～4bar
燃气消耗率Gas consumption	≤9200kJ/kWh
机油消耗率 Oil consumption	≤0.3 g/kW·h
润滑方式 Lubrication method	压力和飞溅润滑Pressure and splash lubrication
起动方式 Starting method	压缩空气起动 Compressed air starting
标定功率时1m处噪音Level of noise on rated power	120 dB(A)
旋转方向 Direction of rotation	逆时针（自飞轮端看）Counter-clockwise(facing to flywheel)

发电机参数：Generator parameter

额定功率 Rated power	2000kW
额定电压 Rated voltage	400V
额定电流 Rated currency	3613A
额定频率 Rated frequency	50Hz
额定功率因数 Rated power factor	0.8(滞后) 0.8(Lag)
额定转速 Rated speed	1000r/min
接线方式 Connection method	Y
绝缘等级 Insulation grade	H
环境温度 Environment temperature	0℃～50℃
海拔高度 Altitude	≤1000m
防护等级 Level of protection	IP23
通风方式 Ventilation method	自通风 Self-ventilation
励磁方式 Excitation mode	自励恒压（AVR）

天然气发动机、发电机、公共底盘、高弹联轴器、机组控制柜等，并配备完善的天然气进气、气启动系统、电气控制等系统。发电机采用同步交流无刷励磁发电机。
The genset system consists of a natural gas engine, a generator, a common chassis, a high elastic coupling, a control cabinet and so on. The system is equipped with a perfect system of natural gas inlet, Air motor starting and electrical control. Generator is Synchronous AC brushless excitation generator.

发动机采用美国WOODWARD 的E6控制系统
The engine adopts the E6 control system of American WOODWARD

E6控制系统由硬件和软件组成，其中硬件由LECM控制器、TecJet阀、ProAct阀、氧传感器及其他各种传感器等组成。软件是安装在计算机中的程序，计算机通过数据线与硬件相连。操作者通过操作计算机，向硬件发送指令，来控制硬件动作。
The E6 control system is composed of hardware and software. The hardware is composed of LECM controller, TecJet valve, ProAct valve, oxygen sensor and various other sensors. Software is a program installed in a computer, and the computer is connected to the hardware through a data cable. The operator controls the hardware actions by operating the computer and sending instructions to the hardware.

E6控制系统的优势：
Advantages of E6 control system:

（1） E6控制系统的统一性强。
          The E6 control system has strong unity.

以往控制系统包括空燃比控制系统、调速系统、仪表监控系统、点火系统和爆震控制系统等，种类较多，统一性较差。E6控制系统，将各种独立的控制模块整合到一起，实现各种功能。
In the past, control systems included air-fuel ratio control systems, speed control systems, instrument monitoring systems, ignition systems, and knock control systems. There were many types and poor unity. The E6 control system integrates various independent control modules to achieve various functions.
（2） LECM控制器是E6控制系统中的控制单元，它采用了模块化和集成化相结合的设计方式。
           The LECM controller is the control unit in the E6 control system. It adopts a modular and integrated design method.
①模块化：LECM控制器由主控制模块、EID模块和辅助模块三个模块组成，各个模块都有自己的CPU和内存。
②集成化：LECM控制器的三个模块之间可以两个集成或三个集成进行使用。集成后，各个模块可以共用转速、相位等传感器，数据通过内部总线互联共享。
①Modularity: LECM controller is composed of three modules: main control module, EID module and auxiliary module, each module has its own CPU and memory.
②Integration:Two integrations or three integrations can be used between the three modules of the LECM controller. After integration, each module can share sensors such as speed and phase, and the data is interconnected and shared through the internal bus.

发动机与发电机安装在公共底盘上，底盘通过地脚螺栓固定在混凝土基础上，发动机与发电机组之间采用高弹联轴器连接。
The engine and generator are installed on a common chassis, the chassis is fixed on the concrete foundation by anchor bolts, and the engine and generator set are connected by a high-elastic coupling.