Systematic Methodology for Analysis and Control of Real Driving Emission for Heavy Duty Vehicles Using Virtual Test Bed

Abstract: Development of future efficient and cleaner engines are no longer limited to laboratory development under standard conditions. In order to address the global issues like climate change and air quality future advanced and existing engines should also be demonstrating emission compliance when working under real driving conditions. Starting from Apr 2023, in India heavy duty vehicles would be tested for In-service conformity and presently they are under monitoring phase. In this work we have shown how on virtual test bed we can adopt to model based development methodology to simulate vehicle driving cycles for different real world conditions like variations in traffic, routes, driving style, payload and even extreme conditions like high altitude and hot ambient, analyse their impact on emissions, conformity factor and calibration approach to control these emissions over these transient cycles. A heavy duty vehicle with GVW above 16 tonne was tested on-road using PEMS on a selected RDE route and validated for model development on VTB. Later different RDE scenarios were created on VTB and their impact and control using transient calibration was explored in this work. Keywords: Real driving emissions, heavy duty vehicles, model based development and transient calibration