Browse Publications Technical Papers 2007-24-0114
2007-09-16

Fuel Consumption Simulation Model of a CNG Vehicle based on Real-world Emission Measurement 2007-24-0114

This research aims at establishing a procedure to simulate the fuel consumption and CO2 emissions of a CNG-powered vehicle from real-world mass emission measurement data.
In order not to be dependant on characteristic maps derived from test bed measurements a procedure to define an analytic function which describes the fuel consumption of the whole powertrain from real-world onboard emission measurements has been developed. This procedure involves developing a closed loop simulation program in Matlab/Simulink for driving resistances, driver behavior, powertrain and vehicle.
The simulation program calculates the fuel consumption and CO2 emissions with around ±3% accuracy compared with real-world measurements when the vehicle is driven on significantly different types of urban routes.

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