THE DEVELOPMENT OF THE INTERFACE SOLUTION FOR THE ACQUISITION OF INFORMATION FROM THE OBD SYSTEM OF THE VEHICLE

Abstract

The intensive development of the automotive industry has been observed over the past decades. The prices of cars have become more affordable for the average consumer, resulting in the increase in the number of the vehicles. This is connected with the increased exhaust emission which has an adverse impact on the environment. The proper standards whose role was to minimise the harmful effects of the vehicle on the environment were placed on the car manufactures. The on-board diagnosis systems have been developed for the permanent monitoring of the vehicles. The OBD system is one of them.

The aim of the study was to develop the interface with the use of simulation tools for the acquisition of information from the OBD system for the engine simulation of the vehicle in-service within the currently applicable WLTP test. The diagrams of the performed simulation of the operation of the vehicle within the WLTP test with the use of the Scilab Xcos environment and the results achieved from the applied interface were presented in the design part.

The mathematical relations were used to build a simulation model of the operation of the vehicle within the WLTP test which faithfully reproduces the real operating processes. The development of the simulation for the acquisition of the data on the current operating parameters of the engine allows for the creation of the programming solutions at the initial stages without the necessity for the operation of the programme with the real OBD system integrated in the vehicle.