As a global leader in the commercial vehicle industry, Yutong is dedicated to advancing new energy bus technology while championing green and sustainable practices. Amid accelerating transitions to new energy solutions, Yutong has introduced its next-generation hybrid technology—DMT (Dual-Motor Technology)—setting a new benchmark for the industry. The DMT system not only represents a technological breakthrough in the new energy bus sector but also demonstrates exceptional competitiveness in both cost-efficiency and environmental performance.

This article provides a comprehensive analysis of Yutong’s DMT hybrid technology, from its overview and technical advancements to real-world applications, showcasing its embodiment of sustainable development principles.

Overview of DMT Hybrid Technology

DMT, or Dual-Motor Technology, is an advanced coaxial dual-motor hybrid system. This system intelligently coordinates the operation of the engine and electric motors, enabling both pure electric drive and efficient internal combustion engine operation. Compared to traditional hybrid buses, Yutong DMT buses achieve an innovative balance between power performance and cost-effectiveness. By integrating advanced control strategies and energy-saving technologies, it provides new possibilities for the sustainable development of public transportation.

Advantages of DMT Technology

Yutong’s DMT shows excellent performance regarding fuel economy, reliability, and NVH (Noise, Vibration, and Harshness) performance.

Superior Fuel Efficiency

The system intelligently adjusts engine operation zones to ensure that the engine is in efficient operation most of the time; the engine's intelligent start-stop function reduces idle consumption. Regenerative braking technology recovers energy during braking, further enhancing fuel economy. Additionally, the integrated optimization of the power system minimizes energy losses, creating a synergistic effect.

With Yutong’s DMT hybrid system, fleet operators, especially in regions with high fuel costs or congested traffic, gain a significant operational advantage. The system achieves over 30% savings compared to conventional vehicles. For instance, a 12-meter bus equipped with the DMT system can save approximately 12,114 USD in fuel costs annually.

Enhanced Reliability

Yutong incorporates high-strength, robust closed-ring structures and reinforced frame profiles to improve force distribution, enhancing structural safety and minimizing deformation during emergencies, thereby safeguarding passengers.

The three-electric system has strong waterproof capability, and the vehicle is safer. Yutong Coach’s critical components, such as supercapacitors, drive motors, and motor controllers, achieve IP68 and IP6K9K protection levels, reaching the international advanced level, and can still work normally after being sprayed by high-temperature and high-pressure water spray. This ensures the Yutong coaches perform reliably on flooded roads and in adverse weather conditions.

Furthermore, the dual-mode DMT hybrid system adopts a gearbox-less design with dual motors arranged coaxially to reduce mechanical failures and provide high reliability. The supercapacitor boasts over one million charge-discharge cycles, enabling frequent energy pulses without degradation while supporting rapid recharging.

Exceptional Driving Experience

Noise and vibration isolation technologies, combined with a silent start-stop design, create a quieter and more comfortable experience for drivers and passengers. The DMT system utilizes a pure electric start mode, minimizing vibrations and noise during engine ignition.

In NVH performance tests, DMT gives an impressed answer. By optimizing structural design, soundproofing materials, and vibration-absorbing elements, the DMT system effectively reduces the transmission of high-frequency vibrations and isolates low-frequency noise, achieving superior noise and vibration control.

Additionally, front double-wishbone independent suspension and rear four-link non-independent suspension, paired with air springs and dedicated pistons, effectively buffer road impacts. This configuration achieves lower suspension stiffness, effectively cushioning vibrations caused by speed bumps, uneven road surfaces, and expansion joints. Together with DMT’s seamless acceleration functionality, driving smoothness is significantly improved.

Improved Environmental Benefits

Yutong Bus’s commitment to sustainability extends beyond fuel savings to include the use of recyclable materials. Yutong DMT hybrid products have a fuel saving rate of more than 30% compared with traditional vehicles, effectively reducing fossil fuel consumption and pollutant emissions; the supercapacitor used in such products is an ideal green energy source, and the main materials used will not pollute the environment in the process of production, use, storage, and dismantling, and can be recycled and reused.

Each 100-unit fleet of 12-meter hybrid buses can annually reduce PM emissions by 240 kilograms, NOx emissions by 12 tons, and CO2 emissions by over 2,000 tons—equivalent to planting approximately 15,000 trees.

Applications and Future Prospects

Yutong’s DMT technology has been widely adopted across various markets, showcasing its economic and environmental advantages in real operations:

· Mexico: The 10.5-meter hybrid bus achieved a 30% fuel savings compared to traditional buses,  recouping its additional investment and reaching full lifecycle cost breakeven in approximately 1.7 years.

· Mongolia: The DMT system demonstrated stable performance in low-temperature environments, reducing fuel consumption by 30% while enhancing operational stability, comfort, and safety.

Looking ahead, Yutong plans to further refine DMT technology to address more complex terrains and climate conditions. Yutong also aims to integrate intelligent driving assistance and vehicle-to-network technologies, paving the way for an efficient and low-carbon intelligent public transportation ecosystem.