在许多情况下,节约能源和减少污染往往矛盾,但对于以燃油为能源的内燃机来说,使用掺水燃料后则可以同时达到上述两个目的。此外,它还有一个突出的优点,就是安全。因此,在军用上有重要实用价值。美、日、英、西德等工业发达国家研究掺水燃料主要是出于降低排气公害的需要,而我国则着重于节油。但普遍采用掺用乳化剂的方法,不仅制备过程中要耗能,而且因为乳化剂的价格较贵,所以往往节油的得益会被成本所抵消。其它的一些方法,如将水喷入进气歧管 In many cases, energy conservation and pollution reduction often contradict each other. However, for a fuel-powered internal combustion engine, the use of water-fueled fuel can achieve both the above objectives. In addition, it has a prominent advantage, that is, safety. Therefore, there are important military practical value. In developed countries such as the United States, Japan, Britain and West Germany, the study of water-doped fuel is mainly for the sake of reducing the need of exhaust pollution while in China, the focus is on saving fuel. However, the commonly used method of blending emulsifiers not only consumes energy in the preparation process, but also because the price of the emulsifier is more expensive, the benefits of fuel economy are often offset by the costs. Other methods, such as spraying water into the intake manifold