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Dual-fuel engine (dual-fuel engine: achieve high-efficiency and US-China trade data comparisonsconsumption) With the increasing prominence of energy problems, the automobile industry is also constantly exploring new energy efficiency technologies. Among them, dual-fuel engines have become a very potential technology, which can achieve high efficiency and consumption. This article will introduce the dual-fuel engine and its advantages in detail. Dual fuel and its concept Dual fuel, or hybrid fuel, refers to a technology that mixes two different fuels. In the automobile industry, natural gas and diesel are usually mixed, because natural gas has a relatively high energy efficiency, but it is easy to explode during combustion, while diesel is relatively stable, but the energy efficiency is slightly lower. By mixing the two fuels, we can make full use of their respective advantages to achieve higher energy efficiency.The working principle of dual-fuel engines. There is not much difference in structure between dual-fuel engines and traditional diesel engines, but some improvements have been made in the fuel system. Specifically, the dual-fuel engine adds a natural gas starter and a hybrid fuel control system. When starting the car, the natural gas starter will first inject natural gas into the engine to start the engine. Once the engine is running, the mixed fuel control system will control the mixing ratio of fuel and natural gas to ensure the normal operation of the engine. According to different driving conditions, the engine will automatically switch between fuel and natural gas to maximize the use of energy. Advantages of dual-fuel engine 1. Higher energy efficiency Theoretically, the energy efficiency of dual-fuel engines can be more than 30% higher than that of traditional diesel engines.This is because the energy produced by natural gas combustion is higher than that of diesel, and less exhaust gas is generated during the combustion process, which reduces emissions. Two. Lower operating cost Due to the low fuel consumption of dual-fuel engines, once this engine is installed, the operating cost of the car will be reduced. At the same time, the use of natural gas as fuel also helps to reduce the impact of oil price fluctuations and oil supply problems on car operation. 3. Lower pollution emissions Because the combustion of natural gas produces less exhaust gas than diesel and does not contain harmful substances such as sulfur, copper and lead, cars using dual-fuel engines will produce less exhaust emissions. This is very important for environmental protection. Shortcomings and challenges of dual-fuel engines 1. Safety issues The use of natural gas as fuel will have certain safety hazards. Once there is a leak or explosion, it will pose a threat to people's lives and property.Therefore, it is necessary to strengthen the storage and transportation safety of natural gas fuel in order to promote dual-fuel engine technology on a large scale. Two. The technical cost is relatively high. At present, the research and development and production costs of dual-fuel engines are still relatively high, which also limits its promotion and application. In addition, the natural gas fuel storage and refueling equipment used by dual-fuel engines also need to be updated and upgraded accordingly. 3. The high cost of procurement and management requires corresponding investment and management costs for the procurement, installation and use of dual-fuel engines, which will also increase the cost of use. At the same time, it is also necessary to establish a corresponding technical support and maintenance system to ensure that the engine always maintains a stable operating state. In general, dual-fuel engines, as a new type of automotive energy efficiency technology, have shown obvious advantages and potential. However, it is also necessary to overcome a series of technical and management problems in order to be more widely applied and promoted.It is believed that with the continuous development of the automobile industry and the continuous progress of technology, dual-fuel engines will develop into a very important automotive power technology in the future.

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