Diesel Engine 4BT3.9-G1

Dongfeng Cummins Engine Co., Ltd. (hereinafter referred to as “Dongfeng Cummins”) is located in Xiangyang City, Hubei Province, is the modern manufacture of heavy duty engine 50:50 Joint Venture shared by Dongfeng Automobile Limited and Cummins USA.
Chat Now

Product Details

Cummins 4BT3.9-G1 Diesel Engine for Generator Set

Engine Model


Rated Power


Rated Speed


Engine Type

4 Cylinders, in Line




3.9 L

Compression Ratio


Fuel Consumption

9.3 L/hr

Aspiration Type


Cooling Method

Water Cooled

Start Type

24V, Electric Start

Fuel System

Direct Injection Pump

Governor Method

Mechanical Governor

Packing Weight




Advanced Fuel Systems and Fuel Treatments

Advanced Common-Rail Fuel Injection: Common-Rail Fuel (CRF) Injection system is a form of direct injection system, which injects fuel from a fuel tank into individual solenoid or piezoelectric valves. The fuel tank stores fuel at high pressures. This is an electronically monitored injection system, which allows for greater control over the fuel injection time and quantity. The CRF system is designed to maintain high pressure, which helps homogenize the fuel and air mixture by allowing for finer vaporization of fuel. This paves the way for more complete combustion, leading to greater power output and lower exhaust emissions.  Recent advances in this system include modifications which allow for as many as five fuel injections per combustion cycle, thereby improving fuel economy. In fact, CRF systems are associated with a 20 per cent decrease in fuel emissions and 5 per cent improvement in fuel economy.

Fuel Composition: Diesel fuel is typically high in sulfur content. Diesel produces high particulate matter emissions on combustion, which clog emission devices and hamper engine performance. However, with EPA (Environmental Protection Agency) mandates that went into effect in 2006, a newer version of diesel has been formulated with sulfur content as low as 15 parts per million (ppm). It is known as Ultra-Low-Sulfur Diesel or ULSD and has very low exhaust gas emissions.


You Might Also Like