Cummins QSM11-C400 Industrial Diesel Engine

The Cummins QSM11-C400 is a high-output industrial diesel engine designed for demanding non-road applications. With 400 hp rated power and strong mid-range torque, it delivers stable performance across multiple power calibrations. As a result, equipment manufacturers can match the engine precisely to different duty cycles and operating requirements.

Technical Specifications

Several performance configurations are available for the QSM11-C400:

Configuration A

• Rated power: 400 hp (298 kW) at 1800 rpm

• Maximum power: 400 hp (298 kW) at 1800 rpm

• Maximum torque: 1898 N·m at 1400 rpm

Configuration B

• Rated power: 400 hp (298 kW) at 2100 rpm

• Maximum power: 403 hp (301 kW) at 2000 rpm

• Maximum torque: 1898 N·m at 1400 rpm

Configuration C

• Rated power: 400 hp (298 kW) at 2100 rpm

• Maximum power: 446 hp (333 kW) at 1800 rpm

• Maximum torque: 1898 N·m at 1400 rpm

Configuration D

• Rated power: 400 hp (298 kW) at 2100 rpm

• Maximum power: 428 hp (319 kW) at 1900 rpm

• Maximum torque: 1898 N·m at 1400 rpm

Strong and Consistent Torque Delivery

Across all versions, maximum torque reaches 1898 N·m at 1400 rpm. Because peak torque is available at this commonly used working speed, the engine ensures powerful pulling force during heavy-load operations. In addition, strong mid-range torque improves acceleration under load and enhances machine responsiveness.

At the same time, stable torque output reduces speed fluctuation during continuous-duty cycles. Therefore, operators benefit from smoother power delivery and improved working efficiency.

Flexible Power Matching for Different Applications

While rated power remains fixed at 400 hp, maximum power output varies depending on calibration. For example, some versions maintain equal rated and peak power at 1800 rpm, which supports stable constant-speed operation. Meanwhile, other configurations provide higher peak power at lower engine speeds, offering additional performance margin when required.

Consequently, equipment manufacturers can optimize drivetrain integration and hydraulic system matching. Furthermore, this flexibility allows the engine to support a wider range of heavy-duty non-road machinery.

Reliable Performance in Demanding Conditions

High rated power combined with strong torque at 1400 rpm ensures dependable operation in challenging environments. Since the engine maintains consistent output across its working range, it supports productivity without unnecessary strain. Overall, the QSM11-C400 delivers a balanced combination of power, flexibility, and operational stability for demanding industrial applications.