SEMS for individual trip reports and long-time measurement 2019-01-0752
Abstract for WCX SAE World Congress Experience April 9-11, 2019
SEMS for individual trip reports and long-time measurement
During the last decade the gap between real-world driving emissions and test-bench tests became obvious. To overcome this gap, all modern passenger cars and trucks in Europe must undergo an on-road driving emission test with portable emissions measurement systems (PEMS). The currently used PEMS however, have some constraints, due to the large volume and operation effort. PEMS are meant for monitoring the emissions of a vehicle for a limited time. To cover real-world driving conditions, a longer, more diverse measurement is desirable.
To derive robust and reliable emission factors a simple and easy-to-use emission monitoring solution, the Smart Emission Measurement System (SEMS) was developed. Since 2012, this automotive sensor-based system and toolbox has been continuously developed and validated, through numerous measurements of emissions from light duty vehicles (LDV), heavy duty vehicles (HDV) and non-road mobile machinery (NRMM).
HORIBA and TNO are collaborating on the industrialization and large-scale deployment of SEMS, enabling new possibilities for measuring real-world driving emissions, accelerating monitoring and evaluation of actual emission performance and providing valuable insights for improving sustainability of vehicles and machinery.
Such system is a pre-condition for collecting world-wide mass-data of enormous number of vehicles, even over their life-time, under real-driving conditions. Measurement data like NOx, NH3, GPS… is stored on a cloud-based database and multiple services can be offered.