During the "Eleventh Five-Year Plan" period, the demand for single-cylinder diesel engines is about 6 to 7 million units. At present, the single-cylinder diesel engine has a production capacity that is greater than the market demand, and the product reliability, fuel consumption, emissions and other indicators have a wide gap compared with foreign products. During the "11th Five-Year Plan" period, single-cylinder diesel engines must develop a new generation of products and gradually replace the current products. This is the only way for the survival and development of single-cylinder diesel engine manufacturers.
The output of a single-cylinder diesel engine was more than 8 million units last year. According to relevant experts, with the improvement of the technical level, agricultural vehicles will enter the automotive sector in the future and the demand will likely drop.
Multi-cylinder diesel engines are currently equipped with low-speed economical trucks for agricultural machinery, ie, four-wheel agricultural vehicles, three-wheel agricultural vehicles, crawler tractors, and combine harvesters. In 2003, there were about 720,000 multi-cylinder diesel engines for various agricultural machinery products. It is expected that the number of multi-cylinder diesel engines required by various agricultural machinery during the “11th Five-Year Plan†period will be between 880,000 and 1.1 million units per year. If the low-speed economical trucks are four-wheeled agricultural vehicles, the number of multi-cylinder diesel engines that are truly supporting agricultural machinery is only 280,000 to 300,000 units. In addition to passenger cars and minibuses, multi-cylinder diesel engines currently have a variety of other types of trucks and buses. The dieselization of automobiles is one of the current trends in the development of automobiles. In the future, this proportion will increase. It is estimated that the vehicle production in 2010 will be between 10 million and 11 million vehicles, of which about 7 million to 8 million cars will be produced, and it is estimated that there will be 2.4 to 2.5 million multi-cylinder diesel engines.
In the field of construction machinery, multi-cylinder diesel engines are now mainly used for supporting large and medium-sized construction machinery. According to the development trend of construction machinery, it is expected that by 2010, 300,000 sets of multi-cylinder diesel engines will be required for large and medium-sized construction machinery. In multi-cylinder diesel engines, there are parts for ships, railway diesel locomotives, and oil drilling rigs. Most of these hosts use medium- and low-speed multi-cylinder diesel engines. The number is small, but there are some specific requirements. In recent years, multi-cylinder diesel engines have been used in coastal, inland shipping vessels and large-scale fishing vessels.
China's national economy is still in a period of stable high-speed operation. The country's electricity supply is estimated to have a certain degree of shortage in different degrees in the past two to three years. The internal combustion generating units will still have a space for development and the market has certain needs. In addition, there are certain demands for construction operations and backup power sources in remote mountainous areas, islands, and overseas operations. During the "11th Five-Year Plan" period, it is estimated that the internal combustion power generating unit may need 8 million kilowatts of multi-cylinder diesel engines each year.
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