The turbocharger can reduce the size of the engine, increase the fuel efficiency by 20% to 40%, and enhance the power of the vehicle compared to the naturally-occupied engine with a large volume. However, Yao Chunde, deputy director of the State Key Laboratory of the Internal Combustion Engine Combustion Institute of Tianjin University, believes that turbocharged engines are not very suitable for China's road conditions, especially in urban transportation, it is difficult to exert their energy-saving advantages. "According to the engine's energy-saving requirements, engine miniaturization is indeed the future development trend. To achieve miniaturization of the engine power performance is unchanged, turbocharger is an effective way to achieve." Yao Chunde said that in the United States, European countries Under the conditions of the road, the technical route with turbocharged engines is appropriate, and the energy-saving effect of turbocharged engines at medium and high speeds can be fully utilized. In particular, the United States has always had a large displacement of automobile engines. Under the requirements of future energy-saving regulations, the engine will have more space for small-displacement and miniaturized engines. “The traffic congestion on our country’s roads, especially on urban roads, is quite prominent. The average speed of vehicles is around 30-50 km, and it cannot take advantage of turbocharged engines. From the current market, the growth of turbocharged engines is also mainly reflected. In the diesel engine market.†Yao Chunde believes that the urban traffic situation in China determines that a large number of turbocharged engines are not suitable.
In addition, Professor Yao believes that higher prices and later use costs will also restrict the promotion of turbocharged engines. "In the past few years, many countries have had high enthusiasm for the development of turbochargers under the state's encouragement and guidance of energy-saving and subsidy taxation policies for engine displacements of 1.6L and below. But I personally think that it may not be able to receive the expected results. Energy-saving effect.†He believes that in China's gasoline engine market, turbocharged engines may not be able to become a real energy-saving technology, and more likely to become a selling point in the car enterprise marketing.
At present, China's supercharger is mainly manufactured by foreign capital or joint ventures, and the overall price is relatively high, which virtually increases the production cost of the entire vehicle company. Domestic turbocharger manufacturing enterprises represented by Hunan Tianyan and Ningbo Tianli, etc., still have lower pressurization of their products, and their product reliability needs to be further improved. “At present, although the use of turbocharged engines in China's self-owned brand auto companies is relatively fast, the total volume is not large, and I am afraid that companies are also considering cost control.†Prof. Yao believes that the number of turbocharged engines that have been put into the market earlier than the According to the market performance of the Passat and Magotan engines that press the engine, although consumers recognize its power performance, there is not much recognition for the energy efficiency of the product. On the contrary, due to the higher maintenance costs of the turbocharger, especially in the aftermarket, prices are still relatively expensive, and consumers are very likely to give up their turbocharged engines.
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