On October 10, the 10,000th WD12 engine, marked with the words "10,000th WD12 Engine," was carefully taken off the assembly line at the No. 1 plant of Weichai New Power Plant and immediately transferred to the vehicle plant. This moment marked a significant milestone in Weichai's history. The WD12 engine had officially gone offline on October 20 last year, during the 60th anniversary celebration of Weichai's establishment. Within just under 10 months, Weichai Power managed to produce and sell 10,000 units of the WD12 engine, showcasing the rapid growth of China’s heavy truck industry as it transitions from 10-liter to 12-liter engines. "Without the WD12 engine, I wouldn’t even consider buying the truck," said Wang Xiangfu, a customer from Hejin, Shanxi. He emphasized that trucks equipped with the Weichai WD12 engine are his top choice due to their reliability, low failure rate, and strong power output. Many customers now prioritize this engine, which has quickly gained popularity in the market. A year ago, few people knew about the WD12 engine. Now, its sales have surpassed 10,000 units, with over 1,500 units sold in Shanxi alone. According to an official from Weichai Marketing Corporation, major automakers are urgently seeking this high-performance engine, expecting to produce and sell 15,000 units this year—nearly seven times the previous year’s volume. Next year, orders are expected to exceed 30,000 units, reaching 50,000 by 2009. The market has given high recognition to the WD12 engine, which has broken the dominance of foreign brands in the 12-liter engine segment and accelerated the upgrade of China’s heavy vehicles. The past year has demonstrated the strong market adaptability of the WD12 engine. Large trucks, tractors, and dump trucks all favor this engine for its performance and reliability. As a flagship product of the 220kW series introduced in 2007, the WD12 is a high-level, high-power engine developed after Weichai crossed the Steyr platform. It is a mature 12-liter engine designed specifically for China’s heavy trucks, covering power outputs from 247 kW to 353 kW. It has passed rigorous tests, including plateau, high-temperature, and cold conditions, after more than 50,000 hours of bench testing, 86 road tests, and up to five years of real-world use. Developed by Weichai Power Europe R&D Center, the WD12 incorporates advanced global technology and innovative design. Its economic performance is among the best in the world. Compared to similar domestic engines, the WD12 offers better fuel efficiency, reliability, durability, and safety. It features a specially designed P12 high-pressure oil pump with a pressure of 1400 Pa, significantly improving diesel atomization and combustion efficiency, reducing fuel consumption by 10% to 15%. Over 100,000 km per year, this can save a considerable amount of fuel over three years. With a torque of over 1,300 N·m at 1,000 rpm and a maximum torque of 1,950 N·m, the WD12 delivers excellent acceleration and load capacity. It also has a wide high-torque range, making it ideal for heavy-duty applications. Compared to 9-11 liter engines, the WD12 has proven to be more reliable, with fewer failures after years of market testing. Additionally, the WD12 uses WEVB exhaust brake technology, introduced globally alongside Weichai Power. This feature enhances braking efficiency by over 50%, reduces braking frequency, increases safety, and extends the life of the braking system, improving driving comfort. Experts note that the rapid development of China’s infrastructure and macroeconomic growth will continue to drive demand for high-power heavy trucks and construction machinery. As a result, large-displacement, high-power engines like the WD12 are expected to dominate the market for the foreseeable future. Previously, technical limitations hindered the development of such engines, but now they are in high demand across various sectors. In summary, the WD12 engine represents a significant leap forward in China’s commercial vehicle industry, reflecting the country’s growing capability in developing advanced, high-performance engines.

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