Design And Simulation Of Measurement And Control System Based On Engine Spray Test Platform

How to save fuel, in the research field of the engine reduce the exhaust emissionscontinue should be solved, so it is important to study the fuel atomization quality. In order tostudy the law of injection and combustion quality, and we need to research on the factorsinfluencing the quality of spray, spray particle picture good atomization quality becomes thekey of research. Therefore, this paper designed a system based on the measuring system ofengine spray test bench.Based on the existing conditions of spray laboratory, with direct measurement method asthe prototype, analysis of overall condition of engine spray test bench, the use of electronictechnology, sensor technology and signal processing technology design and mechanical partsmatching based on measurement and control system of engine spray test bench. The followingwork has been done: on the measurement methods and the evaluation index of the spraymechanism, analysis shows that, with the existing conditions of spray laboratory, put forwarda engine spray test-bed function based on the complete control system design ideas; todetermine the overall design scheme of the measuring system of engine test bench based onspray, including the principle of the mechanical parts. Through the selection of themicroprocessor, sensor to complete the core processing unit and the signal acquisition andsensor selection control system; Laboratory of using Altium Designer Summer09requires theacquisition of the temperature and humidity, ambient pressure, motor speed measurementmodule completes the hardware circuit design, the injector drive and camera driver design ofhardware circuit, and completed the whole hardware the circuit principle diagram design;simulation software Proteus was used to complete the simulation of the circuit principlediagram design, program design of measurement and control system by using Keil software,through the combination of the two simulation, control system simulation engine spray testplatform based on.This design advantage: reduce workload of manual measurement, improve the efficiencyof obtaining good spray particle picture, motor speed data to automatically obtain thelaboratory temperature and humidity, ambient pressure and injection pressure. At the sametime, the design method of using simulation software, without the need for multiple purchasesof components and the system board, save design time and cost, improve the efficiency andquality of design, reduce the cost of development.