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In recent years, the global automotive industry has been eagerly seeking solutions for fuel-efficient and alternative energy sources, and the understanding has gradually converged, namely, “three stepsâ€: the recent promotion of diesel and non-oil products such as natural gas and ethanol; , Hybrid power; long-term hydrogen resources for rich resources, zero pollution fuel cells. Among them, diesel engines are becoming an international new trend with their economy, durability and excellent dynamic performance.
In Europe, the market share of diesel vehicles has reached more than 50%. Diesel vehicles are regarded as high-efficiency, energy-saving and environmentally-friendly products. However, in China, people's impression of diesel engines still remains black smoke, noise, and low power. Stage. The reason is that most people's impressions of diesel engines come from low-end agricultural diesel engines, and little is known about the new clean diesel engines carried on cars.
In fact, after more than 10 years of development, the performance of diesel engines has been a qualitative leap, especially the application of many advanced technologies, and the emission, noise, and power performance of diesel engines have been improved to a level equivalent to that of gasoline engines while retaining the diesel engine. High torque, low fuel consumption, low failure rate and other advantages.
Name: Diesel engine technology is also "frontier"
Diesel engines that were once considered to be low-tech have now become "technologically rich mines" in the field of internal combustion engines.
At present, most of the world's mainstream clean-type passenger diesel engines are equipped with Bosch Electronically Controlled Common Rail Fuel Injection Technology (CRDI), which can easily achieve precise control of injection pressure, injection quantity, and timing of fuel injection. The combustion is more complete and the process is more gentle. It fundamentally improves the quality of fuel combustion, reduces the generation of soot, overcomes the noise and vibration generated by traditional diesel engine work rough, and leads to lower fuel consumption through more efficient combustion.
The modern clean diesel engine is also widely equipped with variable section turbocharging technology (VGT). Cross section variable technology enables the engine to continuously change the blade angle of the supercharger according to different working conditions and solves the problem of turbo lag of the traditional supercharging method. This ensures that the engine can be smoothly boosted even at low speeds, resulting in a powerful power experience over the entire operating range.
Intercooled exhaust gas recirculation technology (EGR) is another important technology that modern clean diesel engines carry. By introducing part of the exhaust gas cooled by the intercooler into the combustion chamber, the emission of nitrogen oxides can be effectively reduced, and the vibration and noise caused by knocking can be reduced.
Euro-Yide: The Collector of Three Technologies
At present, the above-mentioned three technologies have begun to be widely promoted in China's diesel engine companies, and have shown a tendency of fierce competition. The traditional diesel engine enterprises represented by Yuchai and Weichai , on the basis of steadying the large-displacement diesel engine market, began to accelerate technological upgrading and enter the diesel engine market for passenger vehicles; and the emerging diesel power represented by Euro-Ideas. As a result, the assembly companies have taken advantage of their latecomers, and they have taken on all three core technologies, such as CRDI, VGT, and EGR, from the very beginning. They are among the most technologically equipped companies in many companies. With the comprehensive application of these three cutting-edge technologies, the Euro-Italian diesel engine has taken the lead in raising emissions to the Euro V standard in China, raising the power up to 55 kW/L. In terms of fuel consumption, the diesel engine's high-efficiency advantage is in the Euro-Yide. The body has been fully reflected that the fuel consumption per 100 kilometers is about 26% lower than that of the direct-injection gasoline engine in the same displacement cylinder.
Industry experts believe that with the technical advantages and performance advantages of the diesel engine as more consumers recognize, as the diesel engine is expected to enter a new stage of rapid development in the Chinese market, and become China's auto industry to deal with the increasingly serious energy and An important force in environmental issues.
