Prediction Of The Performance And Modification Scheme Of The Extended Range H16 Hydrogen Internal Combustion Engine

In the world today,environmental and resource issues are increasingly becoming obstacles to the sustainable development of society.Hydrogen,with its excellent characteristics,can be used as an alternative fuel for petroleum fuels and an important direction for clean energy in the future.Hydrogen internal combustion engines use hydrogen as an energy source for the reconstruction of existing internal combustion engines,which can achieve clean and safe operation and are rapidly developing at home and abroad.Electric vehicles have been rapidly developed with no pollution,low noise,and a wide range of electric energy sources.However,their shortcomings such as low battery density,short battery mileage,and harsh battery operating environment have become bottlenecks that hinder the development of electric vehicles.By installing a range extender on an electric vehicle and using a hydrogen-fueled internal-combustion engine instead of a conventional internal combustion engine to drive the generator to charge the battery,the cruising range of the electric vehicle can be greatly increased,and the hydrogen-burning ensures the cleanliness of the emission,It is of great significance to the development of clean energy vehicles.In this paper,the simulation model of the internal combustion engine is established according to the prototype and the hydrogen reformation is carried out to complete the establishment of the hydrogen internal combustion engine model.The relationship between various parameters of intake and exhaust pipe lengths,pipe diameters,gas distribution phases,ignition angles,and mixture concentrations of hydrogen internal combustion engines was investigated using model simulation.The parameters are optimized;according to the flow characteristics of the nozzles,the selection of nozzle design is completed,and a simulation model of the hydrogen injection system is established;the type-ranging generator is selected and the starting process of the internal combustion engine is studied.The main results are as follows:1)The relationship between the engine performance and various parameter changes such as intake and exhaust pipe diameter,ignition angle,and valve timing is obtained,and the optimal parameters that can ensure that the hydrogen internalcombustion engine reaches the output power and meets the emission requirements are determined,ie,the intake pipe Parameters are diameter 33 mm length 170 mm,exhaust pipe diameter 30 mm length 190 mm,50% hot spot 8 degrees,combustion duration 12 degrees,intake and exhaust valve opening angle 310 degrees and 135 degrees,mixed gas equivalence ratio 0.6 When it works best.2)The model was used for simulation calculation.According to the variation of the internal hydrogen pressure fluctuation,the hydrogen regulator was a cylinder with a diameter of 80 mm,a length of 340 mm and a capacity of 1.7 L.3)The structural parameters of the isg motor were calculated to be 42 cm in diameter and 14 cm in length.The feasibility of the motor design was proved by simulation.The entire starting process of the engine was studied,and the torque required for starting was calculated to be 166.4 N·m.The power is 3.47 kW,and the required hydrogen injection amount during the starting acceleration process is calculated to be 0.4kg/h~1.8kg/h,which provides theoretical support for the design of the electronic control system.