Internal combustion engine structure with superheated water being sprayed into cylinder

Abstract

The invention relates to an internal combustion engine structure with superheated water being sprayed into a cylinder. The internal combustion engine structure with the superheated water being sprayed into the cylinder comprises an internal combustion engine cylinder block, a throttle valve, an oil sprayer, a sparking plug and a water spraying nozzle and further comprises a condenser, a heat exchanger, a three-way electromagnetic valve, a high-pressure water rail and an electronic control unit. The condenser is connected to the exhaust output end of the internal combustion engine cylinder block. The output end of the condenser is connected with the heat exchanger and a first input end of the three-way electromagnetic valve. The output end of the heat exchanger is connected with a second input end of the three-way electromagnetic valve. The output end of the three-way electromagnetic valve is connected with the high-pressure water rail. The high-pressure water rail is connected with the water spraying nozzle. According to the internal combustion engine structure with the superheated water being sprayed into the cylinder, the high-pressure superheated water is sprayed into the cylinder, high-temperature steam is formed through flashing boiling of the superheated water, heat in the cylinder is further absorbed, the superheated water is used as an extra work doing medium, and the heat efficiency of an internal combustion engine system is improved; a control model is established to achieve real-time calculation of the pressure and temperature inside the cylinder, so that it can be guaranteed that the water sprayed into the cylinder is in the superheated state, and therefore the heat efficiency of the internal combustion engine is improved.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, in particular to an internal combustion engine structure for injecting superheated water in a cylinder. Background technique [0002] The energy consumption of motor vehicles has received widespread attention, and the emission standards for carbon dioxide and fuel consumption have become increasingly stringent. In order to further improve the working efficiency of motor vehicles and reduce energy consumption, the internal combustion engine supercharging and miniaturization technology is currently proposed. After using a higher intake pressure, the cylinder volume can be reduced without losing power and torque output, thereby reducing With this advantage, the small-displacement supercharged internal combustion engine is showing a tendency to replace the naturally aspirated internal combustion engine as the mainstream power source of motor vehicles. [0003] However, the therma...

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Problems solved by technology

[0004] At the same time, the exhaust gas discharged from the cylinder takes away about one-third of the heat in the cylinder. At present, injecting cold water into the cylinder can reduce the end-of-compression temperature in the cylinder and avoid knocking and early ignition, but it still does not solve the problem of exhaust heat in the cylinder. A lot of loss problem, cylinder exhaust exhaust wastes a lot of energy consumption, which limits the improvement of the thermal efficiency of the internal combustion engine

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