20V190型天然氣發動機是以濟柴公司16V燃氣機為原型，研制出的一種適用于低壓燃氣、高智能化、熱耗低、可靠性高、低排放、長壽命的20缸V型天然氣機，是一種2000kW以上大功率高性能天然氣發動機。

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.

發動機參數：Main technical specifications for engine

型號 Model	20V 190發動機20V 190 Engine
燃料 Fuel	天然氣 Natural gas /
型式Type	四沖程，火花塞點火、高增壓、中冷 four stroke plug ignition, water cooled, turbo-turbocharged and after-cooled
氣缸數及排列方式 No. of Cylinder & Cylinder Arrangement	20缸V型 20-Cylinder,V-type
缸徑×沖程Bore ×Stroke	190mm×255mm
額定轉速 Rated speed	1000r/min
額定功率 Rated power	2200kW
供氣壓力 Supply gas pressure	1～4bar
燃氣消耗率Gas consumption	≤9200kJ/kWh
機油消耗率 Oil consumption	≤0.3 g/kW·h
潤滑方式 Lubrication method	壓力和飛濺潤滑Pressure and splash lubrication
起動方式 Starting method	壓縮空氣起動 Compressed air starting
標定功率時1m處噪音Level of noise on rated power	120 dB(A)
旋轉方向 Direction of rotation	逆時針（自飛輪端看）Counter-clockwise(facing to flywheel)

發電機參數：Generator parameter

額定功率 Rated power	2000kW
額定電壓 Rated voltage	400V
額定電流 Rated currency	3613A
額定頻率 Rated frequency	50Hz
額定功率因數 Rated power factor	0.8(滯后) 0.8(Lag)
額定轉速 Rated speed	1000r/min
接線方式 Connection method	Y
絕緣等級 Insulation grade	H
環境溫度 Environment temperature	0℃～50℃
海拔高度 Altitude	≤1000m
防護等級 Level of protection	IP23
通風方式 Ventilation method	自通風 Self-ventilation
勵磁方式 Excitation mode	自勵恒壓（AVR）

天然氣發動機、發電機、公共底盤、高彈聯軸器、機組控制柜等，并配備完善的天然氣進氣、氣啟動系統、電氣控制等系統。發電機采用同步交流無刷勵磁發電機。
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.

發動機采用美國WOODWARD 的E6控制系統
The engine adopts the E6 control system of American WOODWARD

E6控制系統由硬件和軟件組成，其中硬件由LECM控制器、TecJet閥、ProAct閥、氧傳感器及其他各種傳感器等組成。軟件是安裝在計算機中的程序，計算機通過數據線與硬件相連。操作者通過操作計算機，向硬件發送指令，來控制硬件動作。
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控制系統的優勢：
Advantages of E6 control system:

（1） E6控制系統的統一性強。
          The E6 control system has strong unity.

以往控制系統包括空燃比控制系統、調速系統、儀表監控系統、點火系統和爆震控制系統等，種類較多，統一性較差。E6控制系統，將各種獨立的控制模塊整合到一起，實現各種功能。
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控制系統中的控制單元，它采用了模塊化和集成化相結合的設計方式。
           The LECM controller is the control unit in the E6 control system. It adopts a modular and integrated design method.
①模塊化：LECM控制器由主控制模塊、EID模塊和輔助模塊三個模塊組成，各個模塊都有自己的CPU和內存。
②集成化：LECM控制器的三個模塊之間可以兩個集成或三個集成進行使用。集成后，各個模塊可以共用轉速、相位等傳感器，數據通過內部總線互聯共享。
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.

發動機與發電機安裝在公共底盤上，底盤通過地腳螺栓固定在混凝土基礎上，發動機與發電機組之間采用高彈聯軸器連接。
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.