Simple Emission Measurement System (SEMS) technique collects data of the concentration of NO_x and O₂, exhaust mass flow, intake air temperature and environmental humidity to estimate the consumption of fuel and pollution emissions include cumulative mass of CO₂ and NO_x by stoichiometric theory. SEMS also combines GPS that determine the vehicle location and speed to calculate the average consumption of fuel and pollution emissions. SEMS can real-time transmit relevant data to monitoring system by 4G communication modules. In the future, SMES can be used to monitor the emission, to measure fuel consumption, to evaluate total emission of mobile source and to investigate carbon emissions of vehicles.

1.Adaptable automobile mode/style : Diesel Engine Vehicle
2.Wireless communication type : 4G 900、1800、2100、2600MHz
3.NOX Sensor communication type : CAN SAE J1939
4.Exhaust Gas Flow input : CAN SAE J1939
5.Fuel Consumption Model error(laboratory):＜3%（ EU ETC ）
6.Cumulative mass of emission Model error (laboratory) : CO₂＜3%（ EU ETC )、NO_x ＜10%（EU ETC)

Emission and fuel consumption measurement of vehicles in real world driving, Total emission evaluation of mobile source, Pollution monitor of stationary source, Investigation of carbon emissions of vehicles.

We can grasp the standard of vehicle emission by using SEMS though environment monitoring and provide the calculation from carbon emission.