On January 8, 2025, at the 10th Discover Trustworthiness Evaluation event, the DongFeng Cummins D2.5 engine was awarded the title of "2025's Most Trustworthy and Fuel-Efficient Light Engine for Users" due to its exceptional fuel economy performance.
In urban distribution scenarios where light trucks frequently encounter stop-and-go traffic, frequent acceleration, and simultaneous driving and cooling requirements, the demands on engine fuel efficiency, power, and reliability are significantly higher. To address these needs, DongFeng Cummins promptly introduced the D2.5 engine, further enhancing its product portfolio and offering more choices for the light truck market.
The new DongFeng Cummins D2.5 engine delivers a maximum power output of 185 horsepower and a peak torque of 550 N·m. The enhanced power provides robust performance, with an 18% increase in low-speed torque and a 15% improvement in start-up acceleration. This enables the engine to handle complex road conditions such as high-altitude areas and steep inclines, ensuring users can transport more cargo efficiently. In terms of fuel efficiency, the D2.5 engine features an advanced combustion system integrated with a closed-loop control mechanism, utilizing 2000 bar high-pressure injection to ensure complete fuel combustion and achieve an 8% reduction in cycle fuel consumption. Additionally, it is equipped with Smart Brain (CBM2.0) technology, which precisely manages fuel consumption, significantly improving overall fuel economy.
The D2.5 engine's ability to deliver high efficiency and reliable fuel performance is attributed to comprehensive upgrades in its core components. Its design is streamlined and compact, facilitating easier installation and compatibility with a wider range of vehicle models. For reliability, the DongFeng Cummins D2.5 engine employs an integrated design, with reinforced cylinder block, cylinder head, and crankshaft components. It has undergone rigorous testing, including "three-high" environmental tests, 25,000 hours of bench reliability testing, 3 million kilometers of road trials, and 1,200 hours of ultra-high pressure validation, ensuring superior quality and durability. Furthermore, it integrates the latest generation of Cummins remote intelligent service systems, providing proactive services and remote diagnostics to support efficient vehicle operation.
Many users have praised DongFeng Cummins engines for their consistent reliability and fuel efficiency, particularly in today's transportation sector where fuel savings are of paramount importance. Users express strong optimism about the D2.5 engine. Winning the "2025 Most Trusted Fuel-Efficient Light-Duty Engine by Users" award underscores the market and user recognition of the DongFeng Cummins D2.5 engine and its outstanding performance.
As a leader in passenger transport power, the D6.7 Euro VI series engines have garnered significant recognition from overseas customers.
On January 8, 2025, at the "19th Annual Review of the Bus Industry, New Quality Productivity Innovation Development Forum, and Bus Technology Exchange," the DongFeng Cummins D6.7 Euro VI series engines were awarded the "2024-2025 International Marketing Collaboration Award for Buses" due to their exceptional overseas product performance and positive user feedback. This marks another consecutive year that DongFeng Cummins has received this prestigious accolade, a testament to its consistently excellent product performance.
The technical capabilities of an engine directly influence vehicle performance and operational efficiency. The D series engines, developed through the collaboration between Cummins and DongFeng, have been well-established in China for many years, earning a solid reputation from Euro III to Euro VI standards. To meet the demands of the Chinese bus export market and international markets, the D6.7 Euro VI series engines have undergone comprehensive upgrades in fuel economy, reliability, and power output, delivering greater economic benefits to customers and providing a more comprehensive and reasonable power service solution.
The DongFeng Cummins D6.7 Euro VI series engines offer a maximum power output of 320 horsepower and a peak torque of 1200 N·m, with notable improvements in torque and climbing ability. In terms of intelligence, these engines leverage advanced technology to achieve seamless interaction between "people, vehicles, and machines." Utilizing Cummins' intelligent system, the engines manage vehicle speed and shift strategies based on real-time vehicle conditions and intelligent coasting technology, ensuring the optimal balance of power and economy.
Additionally, the 1800 bar high-pressure common rail system enhances combustion efficiency, further improving fuel economy. The SS start-stop technology enables the engine to shut down during idle periods, significantly reducing idle fuel consumption. The lightweight design, featuring high-strength composite materials for certain components, reduces overall weight and boosts operational efficiency. The intelligent fuel consumption management system comprehensively considers driving requirements, vehicle weight, and road conditions to provide the most optimized fuel consumption management solution.
In terms of durability, the 6.7 platform has achieved global sales exceeding one million units, building upon the high reliability established during the National V stage of the ISD6.7 engine. The optimized piston ring structure and advanced coating materials reduce frictional power loss, enhance wear resistance, and extend component lifespan. Additionally, the adoption of Cummins' patented Inter-brake in-cylinder braking technology ensures superior safety, reliability, and economic efficiency.
For many years, DongFeng Cummins has maintained close partnerships with leading domestic vehicle manufacturers and has become an indispensable partner for bus enterprises venturing into international markets. Winning the "International Marketing Collaboration Award for Buses" once again underscores the recognition and affirmation of DongFeng Cummins' achievements by overseas users and the market. This accolade also serves as a testament to the outstanding performance of DongFeng Cummins' bus engine business in 2024.