Entering the off-season sales of vehicles, the light-duty diesel engine market is even colder.
The reporter learned from the interview that due to the mandatory implementation of the Fourth National Standard, the price of the country's fourth light machine was too high for consumers to accept. The light diesel engine was formally implemented on January 1 next year. Currently, OEMs and consumers are waiting and seeing, and orders have declined. . The parts and components system can not keep up, most of the engine companies caught by surprise, even if there are orders, the company can not produce. National IV emission upgrades will definitely affect the development of the light engine industry. Some small engine companies with poor technical capabilities will face restructuring fate.
“The strict implementation of State IV led to the industry’s decline mainly due to the high cost of the high pressure common rail system of the engine and the upgrading of the national IV emission standard. The relevant configuration required approximately RMB 20,000, and the diesel pump and injector price was approximately RMB 2000-3,000. Electronically controlled high pressure common rail system is 6000-7000 yuan, and the cost of high pressure common rail engine is 30,000 to 40,000.†An industry source told reporters that in the production process, domestic high pressure common rail products are subjected to processing technology and production. The limitations of equipment and raw materials will affect the performance of the manufactured engine. Therefore, in the procurement process, most engine manufacturers will choose foreign-funded or joint-venture high-pressure common rail products to ensure consistency, stability, fuel consumption, and engine failure rate of the engine. The market temporarily failed to accept high-growth prices, resulting in the emergence of "Fake Country IV."
At present, the main four country technical route adopted by the vehicle manufacturers in the light diesel market is the electronically controlled high pressure common rail EGRDOC. Electronically controlled monomer pump SCR is mainly used in the field of medium-heavy vehicles. According to reports, electronically controlled VE pumps and electronically controlled monomer pumps developed by domestic electronically controlled fuel injection systems can also be used in light vehicles, such as Weifu Jinning, Nanyue Electronic Control, and Chengdu Witt, although they can also achieve national IV emissions. Standard, but there are still some problems.
The technician said that the electronically controlled monomer pump meets the country's four emission standards, and the EGR of the treatment system must be strengthened after that. While EGR is very demanding for oil products, the four basic infrastructure facilities in the domestic market are not in place. The electronically-controlled VE pump is upgraded on the basis of the original mechanical pump. The mechanical pump is driven by the power of the engine. The pump injection is controlled by the eccentricity, which may easily lead to inaccurate injection, resulting in incomplete combustion and heavy post-emission processing. Exhaust gas is not up to standard. Moreover, even if these two technologies can meet the National IV emission standards, the performance of high-pressure common rails cannot be achieved under certain conditions, such as multiple fuel injections and pre-injection, which are only applicable to some types of engines.
“Although the domestic electronically controlled high pressure common rail, electronically controlled VE pump, and electronically controlled monomer pump can meet the emission standards and the test can be achieved, the use of the latter is not satisfactory, and it may not be able to meet the National IV emission standards,†he told reporters. .
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