Implement A Console For Hydrogen Production By Plasma In Vehicle

The study found that injecting a certain amount of hydrogen into the car engine when it is working can enhance the fuel combustion efficiency. It will probably to a large extent alleviate the energy crisis and reduce exhaust pollution in the automotive field, if adding a hydrogen generation equipment to the internal combustion engine to assist engine work, and installing it on the car as an improved equipment.In this paper, an experimental device is set up to achieve on-board hydrogen production. The microwave excitation is selected in the trials to make the gas be ionized to plasma which can generate hydrogen fast and take up a small space. Monitoring software is implemented to detect and control each device and pipeline, so that the material flow, environment temperature and pressure. The main content in this paper is stated as follows:Firstly, the characteristics of plasma are studied in this paper. A test bench for hydrogen production by plasma is built in this paper, which includes a computer running the monitoring software, hydrogen reaction loop, microwave system, fiber optic spectrometer, I/O front end. While the microwave system providing energy the reaction needs, the I/O front end communicating the computer and devices in the pipeline by Modbus RTU, the ethanol, water and air are the raw material, and the fiber spectrometer is used to collect spectrums.Secondly, the analytical methods of plasma are also discussed in the paper. And the reaction mechanism of hydrogen generation by plasma will be known by analyzing the emission spectra emerging from the reaction, which contains the relevant information of the optimum condition for hydrogen production. The control requirements are analyzed, and the PID control algorithm and the tuning method is studied. Using open-loop control for material flow control, closed-loop on-off control for the control of temperature and pressure, is able to satisfy the control requirements.Thirdly, through sensors detecting and switch control, the computer control flow, temperature and pressure by the monitoring software programmed by Matlab GUI and Modbus RTU. The software is used to collect and save data gathered by sensors, and display the variation trends. The software also can make the flow, temperature and pressure to fulfill expectations. The peristaltic pump will be standardized and the air tightness will be test by the using of the monitoring software. Finally, error analysis is taken on the control of flow, temperature and pressure in the test. The biggest errors are in the range allowed in the specification. There is a summary of this paper, and prospect.