QSB3.9 Construction Machinery Engines Basic information

Engine Type:4 – Cylinder; In – line; 4 – Cycle
Displacement:3.9 L
Rated Speed:2000 – 2500 RPM
Advertised Power:80 HP to 130 HP @ 2000 – 2500 RPM
Peak Torque:370 N.m to 520 N.m @ 2000 – 2500 RPM
Bore * Stroke:102 mm*120 mm
Packing Size (L * W * H):1010mm * 800mm * 800mm
Dry Weight:500-600kg
CHONGQING CUMMINS

DCEC QSB3.9 Construction Machinery Engines Detailed information

The text you provided describes the Dongfeng Cummins Joint Venture Plant (DCEC), which was established in 1986 as a joint venture between Dongfeng and Cummins USA, with Cummins holding a 50% stake. The plant operates under Cummins’ technology and product line, producing engines that are widely used in various heavy-duty applications.
One of the notable engines mentioned is the Cummins QSB3.9-C, which is known for its versatility and reliability. It is commonly used in:
Heavy trucks
Excavators
Road rollers
Bulldozers
Cranes
Water pumps
Engine power packs
Key Features of the Cummins QSB3.9-C Engine:
High Fuel Efficiency: Designed to optimize fuel consumption, making it cost-effective for heavy-duty operations.
Advanced Integrated Design: Incorporates Cummins’ advanced engineering for seamless performance.
Sophisticated Manufacturing: Ensures high-quality production standards.
Holset Exhaust Gas Wastegate: Enhances turbocharger efficiency and engine performance.
Rotor High-Pressure Fuel Pump: Delivers precise fuel injection for better combustion and power output.
Platform Honing Designed Cylinder Liner: Improves durability and reduces friction, contributing to longer engine life.
Durable and Excellent Performance: Known for its reliability and ability to perform under demanding conditions.
This engine is a testament to Cummins’ commitment to innovation, efficiency, and durability in the field of diesel engines. It is widely trusted in industries requiring robust and dependable power solutions.

Engine ModelGoverned(KW@RPM)Peak Torque(Nm@RPM)Intake
QSB3.9-C80-3060 KW/2000 RPM350 Nm/1350 RPMSupercharged intercooling
QSB3.9-C80-3160 KW/2200 RPM350 Nm/1600 RPMSupercharged intercooling
QSB3.9-C100-3174 KW/2400 RPM330 Nm/1400 RPMSupercharged intercooling
QSB3.9-C110-3081 KW/2200 RPM480 Nm/1600 RPMSupercharged intercooling
QSB3.9-C125-3093 KW/2200 RPM480 Nm/1350 RPMSupercharged intercooling
QSB3.9-C130-3097 KW/2300 RPM520 Nm/1600 RPMSupercharged intercooling
QSB3.9-C130-3197 KW/2500 RPM520 Nm/1600 RPMSupercharged intercooling