Range-extended vehicles have gained widespread consumer favor in recent years due to their advantages of long range and convenient energy replenishment. However, traditional range-extended vehicles experience sharply increased fuel consumption when the battery is depleted, which not only raises operating costs but also severely impacts user experience. To address the challenge of high fuel consumption during battery depletion, GAC GROUP has officially launched the "Battery Depletion Terminator" – GAC Xinyuan Range Extender Technology. The Xinyuan range extender achieves an industry-leading oil-to-electricity conversion rate of 3.73kWh/L, with electric drive efficiency reaching 99%. Through power generation "revenue enhancement" and electricity usage "cost reduction," combined with an AI energy control platform, every drop of fuel and every kilowatt-hour of electricity is utilized to the fullest.

**"Battery Depletion Terminator" – GAC Xinyuan Range Extender Technology**

To resolve the pain point of high fuel consumption during battery depletion, one key factor is maximizing the energy extracted from every drop of fuel to generate as much electricity as possible. The oil-to-electricity conversion rate measures how many kilowatt-hours an extender can convert from 1 liter of fuel. Currently, the mainstream level among industry leaders is approximately 3.4kWh/L, while the Xinyuan range extender achieves an oil-to-electricity conversion efficiency of 3.73kWh/L, ranking first in the industry.

The range extender primarily consists of two major components: the engine and the generator. The engine converts fuel energy into mechanical energy, while the generator converts mechanical energy into electrical energy. Therefore, key parameters affecting the oil-to-electricity conversion rate include the engine's thermal efficiency and the generator's power generation efficiency.

**Engine Technology**

For the engine component, the Xinyuan range extender is equipped with GAC's self-developed fourth-generation 1.5T hybrid-specific engine, achieving a maximum effective thermal efficiency of 43%, exceeding the industry mainstream level by 5% and reaching domestically leading, internationally first-class standards.

This engine employs GAC's innovative "Volcanic Combustion System," featuring a combustion chamber with a "crater-shaped" conical squish design. Combined with precisely designed intake ports, it creates rolling airflow concentrated in the combustion chamber center. Paired with small-diameter fuel injection technology that reduces oil droplet diameter by over 10%, this ensures complete fuel atomization and uniform mixing with air, creating optimal conditions for complete combustion.

Additionally, through GAC's proprietary GCCS gasoline combustion control technology and visualization combustion development technology, the system can precisely control critical parameters such as gasoline ignition energy, ignition timing, combustion process, and cylinder explosion pressure with precision measured in ten-thousandths of a second, ensuring complete and stable gasoline combustion.

The GAC fourth-generation 1.5T hybrid-specific engine also incorporates advanced technologies including EGR exhaust gas recirculation, piston internal cooling, and ultra-hard DLC diamond-like coating, further enhancing engine thermal efficiency.

**Generator Technology**

For the generator component, GAC's self-developed range-extender-specific generator achieves power generation efficiency exceeding 95%, reaching industry-leading levels. In terms of AI algorithms, the Xinyuan range extender can adjust optimal technical solutions based on different vehicle characteristics.

Based on big data analysis, GAC integrates AMOP (Adaptive Metamodel of Optimal Prognosis) testing with machine self-learning technology. Through AI algorithms, the optimal solution is selected from hundreds of thousands of options, reducing total losses by over 20%.

Simultaneously, the Xinyuan range extender generator features upgraded silicon carbide electronic control systems, 0.2mm ultra-thin silicon steel cores, electronic control variable frequency technology, and segmented magnetic steel technology, minimizing energy losses during generator operation.

The Xinyuan range extender adopts the industry's first crankshaft direct-connect oil-cooled generator technology, directly connecting the engine crankshaft to the generator and eliminating traditional indirect connection gear mechanisms. This achieves range extender weight reduction and miniaturization while significantly reducing energy transmission losses.

**Electric Drive Efficiency**

Another key to solving high fuel consumption during battery depletion is improving drive motor efficiency to efficiently utilize every kilowatt-hour generated by the range extender, achieving "cost reduction." The current industry average drive motor efficiency level is 97%.

The Xinyuan range extender utilizes GAC's self-developed Quark Electric Drive 2.0, employing revolutionary materials and process structures to become the industry's first mass-produced amorphous-carbon fiber motor. This technology pushes the industry motor efficiency record to a new height of 99%. According to China Automotive Research Institute testing, the electric drive system achieves CLTC cycle efficiency of 93%, ranking first in the industry.

The drive motor primarily consists of a fixed stator and rotating rotor. During operation, traditional motors inevitably generate significant energy losses in the stator and rotor, mainly because traditional motors are made from silicon steel core materials that undergo electromagnetic induction under alternating magnetic fields, producing eddy currents (circular induced currents) that cause heat losses. Therefore, traditional mainstream automotive drive motors achieve maximum efficiency of around 95%, and motor heating affects motor performance.

The amorphous-carbon fiber motor equipped in the Xinyuan range extender innovatively uses amorphous alloy materials for the stator. This alloy material's disordered atomic arrangement significantly reduces energy losses from electromagnetic induction, achieving approximately 50% energy loss reduction compared to traditional silicon steel materials used in conventional motors.

Simultaneously, the amorphous-carbon fiber motor leverages carbon fiber materials' high strength, low density, and zero eddy current loss characteristics, upgrading traditional metal rotors to lightweight and robust carbon fiber rotors. This reduces overall motor weight by over 40% while decreasing energy losses and improving motor power density.

Furthermore, traditional motor rotor materials may disintegrate due to excessive centrifugal stress during high-speed rotation. GAC's amorphous-carbon fiber motor optimizes carbon fiber winding processes, with only 85g of carbon fiber woven material capable of withstanding centrifugal stress up to 653MPa, enabling the motor to continuously output stably at ultra-high speeds of 30,000 rpm.

**AI Energy Control Platform**

Beyond power generation "revenue enhancement" and electricity usage "cost reduction," selecting appropriate charging and electricity usage strategies at suitable times presents another major challenge for range extender technology. To address this, GAC has developed an AI energy control platform that intelligently adjusts charging and electricity usage strategies in real-time based on traffic conditions, charging station distribution, and user driving habits, always allocating fuel and electricity where they provide maximum value, improving overall fuel efficiency by 15%.

Under CLTC conditions, A-class sedans equipped with Xinyuan range extender technology achieve actual battery-depleted fuel consumption as low as 3.3L/100km, while large SUVs achieve actual battery-depleted fuel consumption as low as 5.3L/100km, enabling users to enjoy more stable and confident driving experiences at lower costs.

**Market Implementation**

GAC Xinyuan range extender technology, through industry-leading ultra-high-efficiency range extenders and ultra-intelligent AI energy control platforms, fundamentally resolves the technical challenges of high fuel consumption during battery depletion in traditional range extender technology, bringing users a new experience of both economical and enjoyable driving.

The first model equipped with Xinyuan range extender platform technology – the Hyper HL Extended Range Version – has been launched and delivered, making fearless battery depletion and full-journey high-efficiency energy-saving driving experiences a reality, providing users with more environmentally friendly and efficient mobile transportation lifestyles.