BYD's 5th Gen DM-i BREAKS RECORDS: 2,300KM Range Tested! ⚡ Hybrid Revolution

Summary

BYD’s 5th generation DMI technology combines a gasoline engine and two electric motors to offer impressive fuel efficiency and range. With a full charge and tank, it can achieve over 2,100 km, surpassing expectations in hybrid vehicle performance. The system optimizes the gasoline engine's efficiency at high speeds, while electric motors excel at low speeds for urban driving. Key innovations include the world’s highest thermal efficiency for the gasoline engine, advanced motor design, and dynamic energy management. This technology showcases the future of automotive innovation, providing both eco-friendly and powerful driving solutions.

Takeaways

• 😀 The 5th generation BYD DMI technology delivers an impressive combined range of 2,100 km, with some tests even exceeding 2,300 km.
• 😀 This hybrid technology combines a gasoline engine with two electric motors: one for generating electricity and another for driving the vehicle.
• 😀 The gasoline engine addresses two key issues: low torque and low efficiency at low speeds, which are compensated by electric motors at these speeds.
• 😀 At speeds under 60 km/h, the vehicle runs solely on electric power, while the gasoline engine acts as a generator to produce electricity for the motor and battery.
• 😀 On highways or at higher speeds, the gasoline engine directly powers the wheels, taking advantage of its peak efficiency in this range.
• 😀 The gasoline engine achieves a thermal efficiency of 46.06%, the highest among mass-produced cars globally, surpassing the previous industry leader at 40%.
• 😀 BYD’s electric motor uses segmented magnetic steel and ultra-thin silicon steel sheets, minimizing energy loss through Eddy currents and improving efficiency.
• 😀 The motor’s power density and cooling system are enhanced, further increasing the hybrid system’s overall efficiency.
• 😀 The DMI system’s electric drive transmission (eCVT) is simpler than traditional multi-gear systems, featuring a fixed gear ratio and two electric motors for dynamic energy flow.
• 😀 The DMI system offers dynamic driving modes like pure electric mode, series mode, parallel mode, and energy recovery mode, optimizing performance and efficiency across different driving conditions.
• 😀 The hybrid system maximizes fuel economy and electric efficiency, enabling the car to utilize every drop of fuel and kilowatt-hour of electricity effectively.

Q & A

What is BYD's 5th generation DMI technology?

BYD's 5th generation DMI technology is an advanced hybrid system that combines a gasoline engine and electric motors to optimize performance and fuel efficiency. It allows for a combined range of up to 2,100 km with a full tank of fuel and a full charge.

How does BYD's DMI technology enhance fuel efficiency?

The DMI system maximizes fuel efficiency by using the gasoline engine to generate electricity at low speeds, allowing it to operate in its high-efficiency zone. At higher speeds, the gasoline engine directly drives the wheels, ensuring optimal efficiency.

Why are electric motors better suited for low-speed driving in BYD's DMI technology?

Electric motors provide high torque and strong power at low speeds, which makes them ideal for stop-and-go urban driving. They also offer quick response and efficient acceleration compared to gasoline engines at low speeds.

What is the role of the gasoline engine in BYD's DMI technology?

The gasoline engine in DMI technology is used to generate electricity, not directly drive the wheels at low speeds. This allows the engine to operate at its peak efficiency, contributing to the overall fuel economy.

What is the thermal efficiency of BYD's gasoline engine, and why is it important?

BYD's gasoline engine has a thermal efficiency of 46.06%, the highest among mass-produced cars globally. This means that more of the energy consumed by the engine is used to drive the vehicle, leading to better fuel economy and reduced energy waste.

What are Eddy currents, and how does BYD minimize them in its electric motor?

Eddy currents are unwanted electrical currents that cause metal parts to heat up and waste energy. BYD minimizes these currents by using segmented magnetic steel and ultra-thin silicon steel sheets, which optimize the motor’s magnetic circuit and reduce energy loss.

How does BYD's electric motor improve overall system efficiency?

BYD's electric motor features advanced designs that reduce current losses and improve power density. The motor’s cooling design has also been optimized, making the entire hybrid system more efficient and reliable.

What is the structure of BYD's eCVT (electric continuously variable transmission) system?

The eCVT system uses two electric motors: the P1 motor for generating electricity and adjusting engine speed, and the P3 motor that directly drives the wheels. The system dynamically switches between multiple driving modes to maximize efficiency.

What driving modes are available in BYD's eCVT system?

The eCVT system has multiple driving modes, including pure electric mode, series mode (where the gasoline engine generates electricity), parallel mode (both engine and motor drive the vehicle), and energy recovery mode (where braking recovers energy).

How does BYD's DMI technology contribute to ultra-long range?

BYD's DMI technology, with its highly efficient gasoline engine and electric motor system, allows for a combined range of up to 2,100 km or even more with a full tank and charge. This is a significant improvement over traditional fuel-powered or pure electric vehicles.