Accompanying Cummins' 50-Year Journey in China
The green transformation of China's excavator industry has deepened step by step.
In this process of moving towards high-quality development,
"Green" has become a key word.
And with each leap in non-road emission standards,
Cummins has chosen to be one step ahead.
Standards not yet in place, solutions already prepared.
As early as the late 1990s, before China's non-road emission standards were even issued, Cummins proactively introduced engines that met the US EPA Tier 1 standards, providing technical reference for the industry.
More than a year before the implementation of the China I emission standard in 2007, Cummins had already completed the R&D and mass production of its QSB3.3 series compliant engines, helping OEMs switch products ahead of schedule.
On the eve of the implementation of China III emission standards in 2014, Cummins optimized the fuel filter and EGR control logic to address the characteristics of fluctuating fuel quality and unstable operating loads in China. This resulted in engines with these engines achieving 25% lower nitrogen oxide emissions and 10% lower fuel consumption, setting a benchmark for "emission reduction without efficiency reduction."
In 2019, while the China IV emission standard was still in the consultation phase, Cummins had already completed bench tests at its East Asia R&D Center and shared the data with partners, helping them to start engine matching two years in advance and ensuring a "seamless transition" when China IV is fully implemented in 2023.
Born for Chinese Operating Conditions
China IV not only has stricter requirements but also increases the complexity of aftertreatment systems. Relying on its local R&D team of over 200 people at its East Asia R&D Center, Cummins launched engines such as the B4.5-C and L9-C, specifically customized for the Chinese market.
To address the issue of high fuel impurities in some regions, Cummins has improved fuel filter efficiency to over 99%. Simultaneously, responding to user concerns about DPF maintenance costs, it has optimized the regeneration logic to reduce service frequency. These customized improvements truly realize the goal of "reducing emissions without compromising efficiency, and making emissions reduction more economical."
Furthermore, the "high-altitude adapted version" engine, developed over three years, can maintain 90% of its rated power at an altitude of 5000 meters and is equipped with a condition monitoring module. It has been widely used in major projects such as the Sichuan-Tibet Railway.
Investing in New Energy, Beyond Compliance
Under the "dual carbon" target, new energy has become a core track for the transformation of the construction machinery industry. Cummins' "China Customization" strategy has also been precisely targeted and highly effective in this area, launching the B7-P1 hybrid system specifically designed for 40-ton excavators in China.
This system integrates the engine, motor, and intelligent control, enabling automatic switching between pure electric, hybrid, and direct drive modes. Fuel economy is improved by 15%-20%, saving over 3000 liters of fuel per unit per year and reducing carbon emissions by over 8 tons. Currently, the supporting models are operating stably in ports, municipal applications, and other scenarios, contributing to the green transformation of large-tonnage equipment.
From China I to China IV emission standards, from fuel optimization to hybrid breakthroughs, Cummins has consistently adopted a model of "advance planning, technology sharing, and full support" to work with China's excavator industry towards a green future-not passively responding to standards, but proactively defining new possibilities for high efficiency and cleanliness.
