[Autohome? Industry] "Water to oil" and "water-hydrogen engine" are ridiculous, but water-injection engines are a feasible technical means. Recently, an invention patent applied by China FAW Co., Ltd. was exposed. The patent is a water tank temperature control system and its control method for water-injection engines. It is an important auxiliary system for the normal operation of water-injection engines. Why spray water into the engine? The core purpose is to improve the thermal efficiency of the engine. In recent years, as fuel consumption and emission regulations have become increasingly stringent, increasing the compression ratio has become an important technical measure to improve engine thermal efficiency. However, the higher the compression ratio, the greater the possibility of knocking under heavy load conditions. Engine water injection technology can reduce the intake air temperature by spraying water into the intake manifold or cylinder, thereby reducing the temperature of the entire working cycle and effectively suppressing the occurrence of knocking. Therefore, it is a technology that effectively improves engine thermal efficiency. Water freezes when it reaches below freezing point, so sprinkler systems face freezing problems in cold environments. Freezing of water in the water tank of the water injection system will cause the system to be unable to supply water to the engine normally. Freezing of water in the pipelines will cause damage to parts such as water rails and sprinklers. Therefore, the existing engine water injection system cannot be used in the environment. When the temperature is close to 0℃, it will stop working and no longer spray water to the engine. This greatly limits the operating temperature range of the water spray system and is not conducive to the use of engine water spray technology in cold areas at high latitudes. Therefore, there is an urgent need for a water tank temperature control system for water jet engines to solve the above problems. The invention patent applied by FAW can ensure that the water in the water tank will not freeze even if the vehicle is driven in extremely cold environments for a long time. It expands the lower limit of ambient temperature for the water injection system and ensures the stable operation of the water injection system. It is reported that the water tank temperature control system for water injection engines includes a water tank, a heating module, a collection module and a control module. The heating module includes an electric heating unit and an engine coolant heating unit, both of which are used to control the water in the water tank. Heating; the acquisition module can be used to collect the water temperature in the water tank, the ambient temperature of the vehicle and the coolant temperature in the engine; the control module is connected to the heating module and the acquisition module respectively to communicate with the information collected by the acquisition module. , to control the heating module to start or stop.
『The picture shows the 4GB15TD engine equipped with FAW Pentium T77 PRO』 Currently, the automotive industry has never stopped exploring the improvement of engine energy efficiency. Internal combustion engines still have an irreplaceable role not only in the automotive market, but also in more fields. status, whether it is water injection engine technology or other advanced internal combustion engine technologies, they are worthy of in-depth study. (Text/Autohome? Li Zhengguang)