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Sinotruck Howo Diesel Engine Assembly Weichai WD615 266hp for Engineering Machinery

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  • WD615

  • weichai

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The Weichai WD615 is a robust and efficient 6-cylinder, in-line, 4-stroke diesel engine renowned for its exceptional durability, reliable power, and superior fuel economy . With a substantial 9.726-liter displacement and featuring turbocharged and intercooled aspiration, this water-cooled engine is engineered to deliver consistent performance in the most demanding transportation, construction, and industrial environments . Its proven technology and robust construction make it a trusted power source for a wide range of heavy-duty equipment .

Key Technical Specifications

For a quick overview, here are the core specifications of the WD615 engine series:

Parameter Specification
Configuration In-line, 6-Cylinder, 4-Stroke 
Aspiration Turbocharged and Intercooled 
Displacement 9.726 L 
Bore × Stroke 126 mm × 130 mm 
Rated Power Range 176 - 280 kW 
Max. Torque Range Up to 1500 N.m (Model dependent) 
Min. Fuel Consumption ≤198 g/kW.h 
Emission Standard Euro II (with Euro III potential) 
Weight (Net) Approx. 850 - 960 kg (varies by model) 
Note: Specifications can vary depending on the specific model variant and application configuration . Refer to official technical data sheets for precise information.

Primary Applications & Equipment

The Weichai WD615 engine is a versatile powerhouse, built to be the driving force behind a wide array of machinery :

  • Heavy-Duty Trucks & Buses: An ideal power source for heavy-duty transportation, providing reliable performance for long-haul and demanding routes .

  • Construction & Engineering Machinery: Extensively used in heavy equipment such as excavators, loaders, and cranes, where its durability is critical .

  • Marine Applications: Powers various vessels, including luxury yachts, inland waterway transport, and fishing boats, for both main propulsion and auxiliary power .

  • Power Generation: Serves as a reliable prime mover in diesel generator sets for prime, standby, and continuous power applications .

  • Agricultural Machinery: Provides dependable power for agricultural operations .

 Core Technologies & Key Features

  • Robust Engine Design for Longevity: The engine incorporates a unique framed main bearing structure that creates a high-strength body, enhancing its ability to withstand high combustion pressures and ensuring a long service life . Key components are sourced through global procurement to guarantee reliability .

  • High Torque Reserve: With a torque reserve of up to 30%, the engine ensures strong acceleration and powerful performance under varying loads and complex road conditions, preventing stall and improving drivability .

  • Excellent Fuel Economy: Optimized combustion and advanced fuel system tuning result in very low fuel consumption across a wide power and speed range, leading to significant operational cost savings .

  • Outstanding Environmental Adaptability: The engine is designed for reliable operation in extreme conditions. It can start at temperatures as low as -15°C without assistance (and -40°C with aids) and perform efficiently at altitudes up to 5,000 meters .

  • Practical and Easy Maintenance: Featuring a "one-cylinder-one-head" design, maintenance and repairs are simplified, reducing downtime and service costs. Strong parts commonality across the series further streamlines inventory and upkeep .

  • Enhanced Safety with WEVB System: The optional WEVB (Exhaust Valve Brake) system acts as an engine brake, increasing the vehicle's total braking power by up to 55%, significantly improving safety on downhill slopes .


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KELUO is a company of machinery, engines, used equipment and spare parts founded by Hanhan in combination with HANJIU, Elephant in the industry.
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