Abstract
The article compares driving test data using the latest legislative proposals applicable to passenger cars. Several measurements were performed on the same test route in accordance with the RDE test guidelines, which requires a number of criteria to be met. These criteria include: the length of the measuring segments, their overall test time share, and the dynamic characteristics of the drive. A mobile device for reading the EOBD System information was used to record the engine and vehicle operating parameters during tests. This allowed for the monitoring of parameters such as: load value, engine speed and vehicle velocity. The obtained results were then analyzed for their compatibility with the RDE procedure requirements. Despite the same research route, the obtained results were not the same. The analysis also uses the two-dimensional operating time share characteristics expressed in vehicle velocity and acceleration co-ordinates. As a result it was possible to compare the dynamic properties, share of operating time and, consequently, to check the validity of conducted drive tests in terms of their practicability and emission values.
Highlights
The need to reduce negative impact on the environment has become a key driving force for the sustainable industry development
This is in contradiction to the previous testing procedures, where the exhaust emission values are measured in laboratory conditions in the adopted type approval test [6,7,8,9]
As agreed with the stakeholders in the CARS 2020 process, the research procedure (RDE) test procedures should be implemented in two stages: during the first transitional period, test procedures should only be used for emission monitoring purposes and followed with binding quantitative RDE requirements for all new type approvals and new vehicles
Summary
The Mobile EOBD Read System – TEXA OBD Log [21] (Fig. 1) was used for the test. This allowed the recording of engine parameters at 1 Hz directly after connecting it to the diagnostic socket. Values such as: sampling time, engine speed and load were monitored. It is worth noting that during the tests the parameters recorded from the EOBD system [20] were stored in the memory of the TEXA OBD Log reader without the possibility of their continuous visualization
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