DCEC Cummins QSB Series | Engine Family (2024)

• Excellent reliability

The five key engine systems are developed and optimized for Cummins to ensure engine reliability.

• Fuel economy

High pressure common rail fuel system (HPCR), fuel injection pressure up to 1600bar, rapid throttle response at different speeds, more efficient power output, better fuel economy, and lower noise.

• Intelligent electronic control

Mature intelligent electronic control technology improves the overall performance of the engine. The engine specifications can be tailored according to application requirements, and the self-diagnosis and self-protection capabilities are stronger.

• Fuel System

The three-stage fuel filter ensures a balanced level of particle dispersion, protects the main components of the fuel system, and maximizes the life of the engine.

• Intake and exhaust system

Adopting exhaust gas bypass turbocharger, the supercharging is smoother at low speed, and the power output is more stable at high speed.

• Remote monitoring function

The electronic control system can intelligently switch the working mode according to the environment and operating conditions, and has the functions of self-diagnosis, alarm and remote monitoring.

Cummins 4-cylinder and 6-cylinder QSB engines

Cummins 4-cylinder and 6-cylinder QSB engines

• Cummins 4-cylinder (QSB3.9 & 4.5 series) construction machinery engine.

When you have a tough job to do, you need the power, precision and flexibility of Cummins QSB diesel engines. These 4-cylinder electronic QSB engines feature major enhancements to make every piece of equipment work harder, smarter, quieter and longer. Plus, they achieve Tier 3/Stage IIIA compliance with in-cylinder technology that maintains a compact, simple and cost-effective design solution.

Cummins QSB engine redesigns the filter system for oil products, which has strong fuel adaptability and is suitable for applications in various fields. The overall modular design, the total number of parts is small, the failure rate is low, the structure is compact, and the maintenance is easy.

• Cummins 6-cylinder (QSB5.9 & 6.7 series) construction machinery engine.

Cummins QSB 5.9 & 6.7 engine uses one of the most successful engine block designs in the world. The 6-cylinder model can choose 12-valve or 24-valve configuration. The QSB engine has the appropriate size, horsepower and torque, and is suitable for all kinds of small agricultural equipment to large mining machinery.

The new high-strength cylinder design and the power output of the rear gear chamber have significant noise reduction effect, improved displacement, better reliability, low noise and longer service life.

• High-quality service covers the whole process

Regardless of your needs, Cummins QSB series engines can match your needs; Getting the right combination to match your equipment, environment and workloads has never been easier；Every QSB engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.

• Call Cummins Care at CUMMINS™ (0086-21-332-827-11) for expert assistance from a Cummins Care representative. If you need service, representatives are available 24/7/365 to help you find the fastest solution.