Views: 0 Author: Site Editor Publish Time: 2025-12-16 Origin: Site
The Weichai series WP12.420 this proven heavy-duty diesel engine platform features a 11.596-liter displacement with a straight-six configuration, widely used in dump trucks. Its core lies in a mature mechanical fuel injection system. Compared to electronic control systems, the mechanical pump design offers simpler structure, better fuel adaptability, and easier maintenance, effectively reducing the risk of failures in complex electronic systems under continuous vibration and high-pollution environments.
| Parameter | Specification |
| Model | WP12.420 |
| Type | In-line 6-cylinder, four-stroke, water-cooled, turbocharged & intercooled |
| Displacement | 11.596 L |
| Rated Power / Speed | 420 HP / 1900 rpm |
| Max. Torque / Speed | 1750-2100 N·m / 1000-1400 rpm |
| Fuel System | Inline plunger mechanical pump |
8×4 and 6×4 heavy-duty dump trucks are used for urban construction, sand and gravel transportation, mining operations, and earth excavation.
The WP12.420 is designed specifically for dump trucks operating under typical conditions of heavy loads, low speeds, steep slopes, and rough terrain.
Low-speed high-torque performance for powerful acceleration and hill climbing: The engine delivers explosive peak torque in the 1000-1400 rpm low-speed range. This enables the vehicle to provide robust and responsive power during heavy-load starts, mud rescue operations, and steep slope climbs, reducing frequent gear shifts and significantly improving operational efficiency.
Frame-type engine block with super strength: The engine block is made of high strength cast iron. Combined with dry cylinder liner technology, the engine block can bear the heavy load and explosion pressure far more than the same class, and its anti-deformation and wear resistance characteristics also greatly prolong the overhaul period of the engine.
Precision combustion with high efficiency: The optimized intake vortex and mechanical pump's precise fuel injection control ensure complete and efficient fuel combustion. Under the typical dump truck cycle of' lifting, heavy-load transportation, and unloading', this technology reduces fuel consumption by 3%-5% compared to similar products.
For more details about the Weichai series WP12.420 mechanical pump engine , contact us Keluo Construction Machinery.
