What are the advantages and disadvantages of diesel engines?

Advantages: The advantages of diesel engines are low fuel consumption, high reliability, long life and high torque. Diesel engines emit much less harmful gases than gasoline engines (especially less CO), so they are more environmentally friendly than gasoline engines.

Disadvantages: lower speed than gasoline engine (generally 1800-3000R/MIN), large mass, high manufacturing and maintenance costs, loud noise, difficulty in starting, etc. Moreover, diesel engine vehicles often drive on the highway. When the vehicle runs for a long time, the engine temperature and pressure are high, which produces more soot and carbon deposits in the cylinder. The engine oil is also easily oxidized to produce colloid. Therefore, the diesel engine oil is required to have good high temperature. Purity.

Diesel engines are widely used and are at the relatively core position of the industrial chain to which they belong. In the past ten years of development, the diesel engine production industry has formed a series of supporting companies. Many diesel engine companies have acted more as general assemblers, and some key parts of the diesel engine: crank connecting rod , pistons, cylinder liners and cams have been produced by professional companies. Specialized division of labor allows diesel engine manufacturers to focus more on their own advantages and focus on the design and manufacturing of diesel engines.

Diesel engines are mainly used in final supporting products. For example, high-power high-speed diesel engines are mainly used in heavy-duty vehicles, large buses, engineering machinery, ships, generator sets, etc. Therefore, the development of the diesel engine industry depends to a large extent on the market conditions of related end products.

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According to incomplete statistics, the models using Dongan Mitsubishi engines include: BYD F3, Brilliance Junjie, Southeast Lancer, Lingyue, Xiwang, Hafei Horse Racing, Saibao, Zotye 5008, Fengxing Jingyi, Changfeng Feiteng ...

The models using Shenyang Aerospace Mitsubishi engines include: BYD F6, Brilliance Zunchi, Junjie, Jinbei Hiace, Chery Oriental Son, Ford Transit, JAC Binyue, Shanghai British TX4, Emgrand EC8, Southeast Lingyue, Junge, Galant, JMC Landwind, Haima 3, Liuqi Fengxing MPV, Changfeng Cheetah, Great Wall Haval, Jiayu, Huatai Traka, BAIC Yusheng, Cavalier, Foton Monpike, Scenery, Zhengzhou Nissan Odin, ZTE Unlimited, Weihu, Sugon Aolong, Qisheng...

In terms of light diesel engines, Isuzu is undoubtedly the king. As early as 1984 and 1985, this Japanese diesel engine and commercial vehicle giant established Qingling Motors and Jiangling Motors in Chongqing, Sichuan, China, and Nanchang, Jiangxi, respectively, and began to produce Isuzu pickup trucks, light trucks, and the matching 4JB1 engines.

With the rollout of Ford Transit, Foton Scenery and other light passenger cars, Isuzu engines have found a blue ocean in the light passenger car market. Now, almost all diesel engines used in pickup trucks, light trucks, and light buses in China are purchased from Isuzu or produced using Isuzu technology.