Weichai Unveils 840-HP WP17H, Claiming World's Most Powerful Semi-Truck Engine

1 articles · Updated · Jalopnik · May 25

840 horsepower and 2,766 lb-ft of torque make Weichai's new 16.6-liter WP17H the most powerful semi-truck engine now in production, built for Shaanxi Automobile's Delong X6000 hauler.
52.28% thermal efficiency underpins that output, with Weichai citing high-pressure common-rail injection, high-efficiency turbocharging and low-friction internals in a market increasingly focused on power and fuel economy.
5%-8% lower fuel consumption than its predecessor is paired with a 16-speed automated gearbox with manual mode to keep the engine in its optimal band, while Weichai says lifespan exceeds 1.2 million miles.
700 horsepower is also available in the natural-gas WP17NG variant, underscoring Weichai's push beyond diesel as rivals in Europe and North America keep escalating the heavy-truck power race.

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