WP12 Engine Series: High-Performance Diesel Power for Medium and Long-Distance Transport

The WEICHAI WP12 series diesel engines are designed to meet the demands of modern 6×4 medium and long-distance transport tow tractors, offering a powerful and fuel-efficient solution. With a power range of 294-338 kW and a maximum torque of 2110 N·m, the WP12 series complies with Euro V emission standards, making it both environmentally friendly and cost-effective for large-scale transport.

Key Features of the WEICHAI WP12 Series

1. Powerful Performance and Range

The WP12 engine series offers robust power options:

• Maximum Power: 338 kW

• Minimum Power: 294 kW

• Maximum Torque: 2100 N·m (available between 1000-1400 rpm)

This makes the WP12 well-suited for heavy-duty towing and demanding road conditions, ensuring superior acceleration and reliability across various driving conditions.

2. Euro V Emission Standards

Meeting the Euro V emissions standard, the WP12 series contributes to cleaner air with reduced NOx and particulate emissions. By combining high-pressure common-rail technology with Selective Catalytic Reduction (SCR), it minimizes environmental impact without compromising power or fuel efficiency.

3. Advanced Engine Design and Specifications

The WP12 engine is a 6-cylinder, inline, four-stroke diesel engine with a turbocharged and intercooled design, ensuring high combustion efficiency and optimized power output. Key specifications include:

• Bore and Stroke: 126 mm x 155 mm

• Displacement: 11.596 L

• Compression Ratio: 17:1

This engine design allows for high reliability and durability, suitable for long-haul applications and extended service life.

4. High Reliability and Durability

With over 45,000 hours of cumulative bench testing and 50 million kilometers of road testing, the WP12 series is engineered for longevity. Its frame block with a dry cylinder liner enhances structural integrity and allows for easy maintenance. The engine’s reinforced structure withstands the stresses of long-distance, heavy-load operations, providing peace of mind to fleet operators.

5. Exceptional NVH (Noise, Vibration, and Harshness) Performance

The WP12 series engine offers a low idle noise level of 81dB(A), thanks to advanced engineering features:

• A drum-shaped skirt design for body strength, minimizing vibrations

• A rear gear chamber with high-precision gears to reduce mechanical noise

• Multiple injection technology to significantly reduce combustion noise

These innovations result in a quieter, smoother ride, ideal for drivers spending extended periods on the road.

6. Ultra-Low Fuel Consumption

The WP12 engine series achieves a minimum fuel consumption rate of 183 g/(kW·h). This impressive efficiency is achieved through:

• Optimized combustion processes

• An improved camshaft profile

• The use of a high-efficiency supercharger and other efficient components

With its low-speed fuel consumption range optimized for 1000-1400 rpm, the WP12 delivers excellent fuel economy, reducing operational costs for long-distance hauls.

7. High Altitude Capability

The WP12 series engine is capable of maintaining performance in extreme environments:

• Rated for power retention up to 3500 meters altitude

• Experiences less than 5% power loss at a rated speed of 4100 meters

This makes the WP12 ideal for transport routes that include high-altitude regions, ensuring consistent performance even under challenging conditions.

WP12 Model Variants

The WP12 series includes three primary models tailored for specific power and torque needs, making it adaptable for various 6×4 tractor configurations:

Each model combines common rail injection with SCR technology, providing a balance between high power output and environmental responsibility.

Why Choose the WEICHAI WP12 Engine?

The WEICHAI WP12 series offers fleet operators and vehicle manufacturers an excellent choice for medium and long-distance transport solutions, with benefits that include:

• High performance and torque for demanding applications

• Enhanced durability for reduced maintenance and long service life

• Excellent fuel efficiency and lower operational costs

• Reduced emissions, meeting Euro V standards

• Versatile adaptability for various 6×4 tractor configurations

Conclusion

The WEICHAI WP12 engine series is a high-performance, reliable, and economical solution for medium and long-distance transport. With a focus on durability, fuel efficiency, and reduced emissions, the WP12 series provides exceptional value for fleet operators who prioritize both performance and environmental responsibility. Choose the WEICHAI WP12 for a powerful, efficient, and eco-friendly engine that meets the demands of today’s heavy-duty transport industry.