Federal Highway Research Institute

HinweisCookies

This website uses cookies. These are used for intermediate storage during ordering or registration processes. Data such as frequency of use or behaviour are not recorded. Here you can find out more about data protection and possibilities for contradiction.

OK

Motor vehicle emissions

On Board Diagnostics (OBD): Analysis of OBD in relation to emission data available in the future for the Periodic Technical Inspection (PTI) (84.0536)
On-board diagnostics (OBD) is becoming increasingly important for recording the emissions of motor vehicles. With a view to the adaptation to the current status and further development of the exhaust emission test (AU), the aim of the project is to determine a future, additional information requirement for the AU, which can be retrieved via the OBD interface. The current requirements with regard to the OBD for the inspection of emission-relevant components are to be determined by means of a survey to the monitoring institutions. A further objective is to examine and assess a wide variety of sensors already developed in exhaust technology with regard to their suitability for OBD application for the AU of motor vehicles. Sensors that can measure legally limited emissions in the current and future directives in the field of exhaust gas aftertreatment are to be examined. Their application is to be analysed and assessed with regard to their suitability for use in the Periodic Technical Inspection (PTI).

On Board Diagnostics (OBD) (84.0537)
The further development of engines and exhaust gas aftertreatment has resulted in a changed emission situation for motor vehicles. This includes, among other things, the nitrogen oxide aftertreatment systems in diesel vehicles. The testing and control of combustion and exhaust aftertreatment systems is increasingly carried out with sensors and plausibility analyses, which are validated, among other things, by diagnostic jobs initiated via on-board diagnostics (OBD). OBD is thus becoming increasingly important for the recording of emissions. In view of the adaptation to the current status as well as the further development of the exhaust emission test (AU), the aim of this research project is to develop an overview of OBD in the field of emission measurement by means of a broad research. This overview concerns the status quo of the current directives, regulations and the practical implementation in the vehicles on the market. Furthermore, the study is to identify the digital transmission possibilities and the associated development potential for the Periodic Technical Inspection (PTI).

Alternative fuels for road traffic (84.0530)
A short literature study shall be carried out to present the current state of development in the field of alternative fuels, including synthetic fuels - so-called 'e-fuels'. In order to be able to compare the different fuels, the study should cover all relevant criteria relevant in the context of the use/production of potential alternative fuels for road traffic. The focus of the literature search should be on the analysis of the following criteria/aspects, among others: Energy efficiency/ primary energy expenditure for fuel production, manufacturing costs, CO2 and pollutant reduction potential of the alternative, availability, usability of the fuel in the existing vehicle fleet or in conventional combustion engines, compatibility with the existing infrastructure, potential of the fuel as a resource, competition with other important areas and market penetration potential in Germany/European Union. On the basis of the specific criteria, a systematic comparison of the considered fuel alternatives is to be carried out, which will enable a comprehensive comparison of the alternative or regeneratively produced fuels with respect to the wide-ranging criteria.

Pilot project on emission measurements using remote sensing devices (84.0531)
The realistic determination and allocation of vehicle emissions in road traffic is becoming increasingly important for meaningful analyses and targeted measures. In the current European exhaust legislation, a major step in this direction has been taken with the introduction of RDE (Real Driving Emissions) measurements for the type approval of passenger cars. These are carried out within the framework of a defined driving profile defined by various parameters. The aim of this project is to demonstrate the possibilities and limits of the optical measurement method "Remote Sensing Measurement" for recording exhaust emissions in road traffic. It should become apparent where the measurement technology can be used locally on traffic routes, which emitters can be recorded, what the data quality is, what data exchange with other authorities or institutions is necessary in order to compare engine data with emission values and what knowledge can be gained from the measured values. Emissions are measured in moving traffic. In addition to the acceleration measurement of the vehicles and the license plate recognition, at least the following values are measured and recorded: CO, CO2, NO2, NO, HC, particles. All vehicles – including light and heavy commercial vehicles and motorcycles – are to be recorded by the system.