国内首个柴油机油D1标准发布，潍柴提供关键支撑

Core Viewpoint - The release of China's first diesel engine oil D1 standard marks a significant step towards breaking foreign monopolies and establishing an independent standard in the industry, with Weichai Power playing a crucial role in its development [1][3][7]. Group 1: Industry Background - China is the world's largest producer and seller of engines, yet it has long relied on the American API system for diesel engine oil standards, which has hindered the industry's independent development [3]. - In 2016, the China Internal Combustion Engine Society, along with Weichai and 42 other organizations, formed the "Engine Lubricating Oil China Standard Development Innovation Alliance" to break foreign technological monopolies [3]. Group 2: Technical Contributions - Weichai invested nearly 100 technical experts over nearly ten years to develop the D1 standard, using its WP13 engine as a core testing platform [4][8]. - The testing data indicated that the new standard allows for an oil change interval of up to 120,000 kilometers, a 100% increase compared to previous standards, significantly reducing user costs [4]. Group 3: Collaborative Efforts - Weichai collaborated with the China Automotive Research and Testing Center to develop the WP13 evaluation method, leading to the implementation of four industry standards and participation in drafting eight supporting specifications [6]. Group 4: Future Implications - The D1 standard not only enhances the competitiveness of Weichai engines but also promotes upgrades across the entire industry chain, with potential benefits for future emissions standards (National VI and VII) [7]. - The promotion of the D1 standard is expected to accelerate the Chinese diesel engine oil industry's transition away from foreign dependency, moving towards high-quality development [7].