Improvement of utility properties of mobile exhaust gas collection equipment

Project title: Improvement of utility properties of mobile exhaust gas collection equipment
Subsidy provider: Technology Agency of the Czech Republic, GAMA Programme

Annotation

The sub-project was aimed at improving the utility properties of mobile exhaust gas collection equipment, which was developed under the project TA02030536 "Development and use of equipment for sampling exhaust gases and measuring emissions of motor vehicles while driving" (TACR, 2012-2014). In the initial configuration, the device enabled continuous measurement of NO_x, HC, CO, O₂ a CO₂, measurement of PM and exhaust gas sampling into the two bags in two operating modes of the car. More intensive operation of mobile device and increasing demands on measurement gradually showed some weaknesses of the initial solution.

The main activities within the project were:

• verification of the using of intelligent energy flows control by means of control elements to ensure more even power consumption,
• verification of the possibility of continuous monitoring and recording of meteorological data during a longer test drive, which serves to refine the calculation of emission factors,
• design and verification of a more robust design of the valve to control the flow of the sample into the bags, which would maintain the required control parameters and prevent excessive wear,
• verification of the possibility of extending the spectrum of continuously measured gaseous substances using other instruments, e.g. infrared spectrometer (FTIR),
• verification of the possibility of sampling the exhaust gases into the bags in three driving modes (e.g. urban, extra-urban and highway) with manual and automatic switching between three bags,
• design and verification of universal connection of the exhaust pipe and the sampling hoses, covering a wider range of configurations, shapes and diameters of the exhaust pipe, ensuring sufficient tightness of the connection and assembly speed,
• verification of the possibilities of improving the ergonomics, layout and design of the mobile device to ensure easy, fast and safe operation of the measuring equipment (especially in the case of forced stops during the test drive) while minimizing passive driving losses.

Photogallery