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一、数据种类本系统所需测量参数共16个,其中数字量参数为6个,模拟量参数10个,可分为以下三类:1)发动机性能参数:发动机转速、测功器磅称公斤数、耗油时间、进气流量计的脉冲数以及排气温度。2)排气成份参数:NO,NO_x,CO,CH。3)监控参数:环境温度、湿度、进水和出水温度、机油温度以及机油压力。前两种参数每2秒采集一次,瞬时采集,求平均值。第三种参数每个工况完毕只采集一次。试验要求根据所测得的发动机参数值,按给定的运算公式进行数据处理,从而求得扭矩、功率、平均有效压力、进气流量、燃油消耗率等。
First, the type of data The system requires a total of 16 measurement parameters, of which 6 digital parameters, analog parameters 10, can be divided into the following three categories: 1) engine performance parameters: engine speed, dynamometer pounds pounds Number, fuel consumption time, number of pulses in the intake flow meter, and exhaust temperature. 2) exhaust composition parameters: NO, NO_x, CO, CH. 3) Monitoring parameters: ambient temperature, humidity, inlet and outlet temperature, oil temperature and oil pressure. The first two parameters collected once every 2 seconds, instantaneous acquisition, and the average. The third parameter is collected only once for each condition. Test requirements based on the measured engine parameter values, according to a given computing formula for data processing, so as to obtain the torque, power, the average effective pressure, intake flow, fuel consumption and so on.