Sinotruk Series Engine Wd615.69

Keluo remains committed to delivering exceptional power solutions for our customers. Today, we present the SINOTRUK WD615.69 engine—a culmination of profound technical expertise and relentless innovation, designed to infuse your heavy-duty equipment with formidable and reliable power.

The SINOTRUK series engine WD615.69 carries the classic Steyr WD615 series DNA in its lineage, yet it is far more than a simple evolution. Renowned for its inline six-cylinder, water-cooled, single-head-per-cylinder configuration, the WD615 series has been continuously optimized and enhanced by Keluo from this high starting point. With a displacement of 9.726 liters, this engine not only inherits the original model's compact design, robust power, and fuel efficiency but also achieves significant leaps in reliability, adaptability, and environmental performance. This ensures it maintains a leading position in the fiercely competitive market.

For heavy machinery, reliability is the lifeline. From its inception, the WD615.69 engine prioritized reliability. Its tunnel-type structure integrates the crankcase with seven main bearing caps into a single casting. Paired with a forged nitrided crankshaft and high-quality alloy steel forged connecting rods, this forms an exceptionally robust foundation, ensuring high reliability of all moving components under heavy loads. Its one-cylinder-one-head design (monoblock cylinder head) not only minimizes size and enhances manufacturability but also delivers outstanding interchangeability and simplified maintenance, reducing long-term upkeep costs. Rigorous calculations, laboratory testing, and real-world validation confirm this engine achieves an average time between failures exceeding 2,000 hours and an average overhaul interval surpassing 10,000 hours, providing robust assurance for your demanding operations.

Exceptional power delivery and extensive torque reserves represent another key highlight of the WD615.69 engine. It employs advanced turbocharged intercooling technology, featuring a Bosch P-type high-pressure fuel pump, a full-range governor matched with low-inertia multi-hole injectors, and meticulously calibrated fuel delivery characteristics paired with a high-efficiency turbocharger. This delivers robust power output with torque reserves reaching 20% to 30%, effortlessly meeting the demanding power and torque requirements of construction equipment in complex operating conditions. It ensures smooth performance during heavy-load starts, incline climbing, or sudden load increases.

In today's era focused on operational efficiency, outstanding economy is paramount. The WD615.69 engine employs multiple technical measures—including triple-ring piston rings with new structures, optimized cylinder clearance, a redesigned combustion chamber, and an optimized swirl ratio—to effectively reduce fuel consumption and oil consumption rates. Its minimum fuel consumption can reach as low as 194 g/kW·h, while oil consumption is controlled below 0.8 g/kW·h, saving every drop of fuel and significantly lowering daily operating costs.

Whether in frigid high-altitude regions or scorching heat, the WD615.69 engine demonstrates exceptional environmental adaptability. Its new turbocharger features an intake recirculation function, expanding the engine's efficient operating range and effectively compensating for power loss at high altitudes. Designed for altitudes up to 2,000 meters without power reduction, it maintains reliable operation with less than 3% power loss even at 4,000 meters. Its exceptional cold-start capability ensures normal operation at -15°C without auxiliary devices; with additional support, it starts reliably in extreme cold down to -40°C.

In response to increasingly stringent environmental regulations, the WD615.69 engine actively embraces green initiatives. Its design incorporates asbestos-free cylinder gaskets, a gasketless main structure, a frame-type crankcase, a stamped oil pan, high-precision gears, and torsion-damped gear drives—all contributing to low noise pollution. Its smoke and exhaust emissions fall well below national standards, meeting Euro I and Euro II requirements while possessing Euro III potential. This makes it particularly suitable for confined spaces like tunnels and warehouses where emissions and noise are critical.

The Keluo SINOTRUK series engine WD615.69 offers exceptional adaptability with a comprehensive range of accessories and components. It provides multiple specifications of air filters, mufflers, generators, starter motors, air compressors, and more for optional selection, while also supporting customized designs to meet specific user requirements. It has been widely adopted across multiple sectors including heavy-duty trucks, various construction machinery (such as loaders, bulldozers, and road rollers), buses, power generation equipment, marine propulsion systems, and agricultural machinery. Its universal, standardized, and series-produced components significantly reduce manufacturing and maintenance costs.

Choosing the Keluo SINOTRUK WD615.69 engine means selecting a reliable power partner. It is not merely a product, but the embodiment of  Keluo 's commitment to “Craftsmanship Drives, Power Endures.” We are dedicated to providing you with full-lifecycle power solutions and value-added services through continuous technological innovation and lean manufacturing, empowering your business to advance steadily and far.

For detailed information, technical specifications, or customized requirements regarding the WD615.69 engine, please feel free to contact us at any time. The Keluo team stands ready to serve you, working together to open a new chapter of efficient power.