Two new ways of measuring the fuel consumption by on-board system are presented: electronic fuel injection(EFI) method and Air/fuel ratio(AFR) method.

• 电喷法通过高频采样系统测量电喷脉宽,计算得到油耗;空燃比法测量记录进气流量计电压及空燃比等信号,计算得出油耗。