Euro 7 OBM and solutions to on-board emissions assessment

Scott Savage･Ian Short (None)

Light-duty Euro7 on-board monitoring (OBM) is mandated from November 2026. Processing of raw emissions and trip data will be performed off-board by the EU to determine in-use emissions performance for vehicle types, guiding targeted ISC and Market Surveillance testing. On-board evaluation of NOx and PM emissions are required at an individual vehicle level. Manufacturers will need to develop strategies to detect when a vehicle may be incapable of passing an ISC test. This paper provides a concise summary of OBM requirements for Euro7 and presents Ricardo's approach to OBM, including solutions to allow on-board emissions compliance evaluation.

Analysis of Real Driving Emissions Measurements During Adverse Weather Conditions Using a Laser Spectroscopy Based Portable Emissions Measurement System

Jorge Eduardo Lamas･Kenji Hara･Yoshinori Otsuki (HORIBA)

Real driving emissions measurements are attracting attention to understand emission behavior when vehicles are subject to various environmental conditions which are difficult to replicate in laboratories. The effect of adverse weather conditions on real driving emissions is still not well documented for emission components of recent interest, such as ammonia. A newly developed Portable Emissions Measurement System using laser infrared spectroscopy is utilized to measure and compare emissions of NH3, N2O and NOx, among other components, during on-road tests of a gasoline vehicle in different weather conditions. Vehicle parameters are monitored and their apparent effects on emissions are discussed.

Integrated Development of Chassis and Powertrain Systems: Enhancing Vehicle Motion Control through Predictive Dynamics and Virtual Validation

Felix Matthies･Marcus Perner･Wei Han･Mark Wielitzka (IAV)

In modern automotive engineering, developing complex cross-domain functions is crucial for vehicle motion control. Functions managing lateral, longitudinal, and vertical dynamics of subsystems like chassis and powertrain are central. A holistic approach to drive system development is essential to address complexity and enhance safety, comfort, efficiency, and agility. This paper presents IAVs latest concepts, emphasizing virtual methods and functional safety. We highlight using a virtual environment with qualified simulation models for preliminary hazard analysis, risk assessment, and function validation, ensuring high-quality development while reducing costs and time.

Initial damage sensing by the vibration modes of AE waves in vibration fatigue

Toshiharu Kaneshiro･Takashi Maeda･Satoshi Ikeda･Yoshimi Sato (Estech)

Vibration fatigue is a phenomenon where materials are damaged by repeated stress and vibration, and it is important in aircraft and automobiles. AE (Acoustic Emission) measurement is a non-destructive evaluation technique that can detect initial cracks, but it has problem of being affected by external disturbances in vibration fatigue. In this paper, we propose a measurement method that focuses on the vibration modes of AE wave to distinguish between testing vibrations and fatigue fracture vibrations.

Evaluation of the application of a flattened dynamometer that can be installed in the wheel well of a vehicle on the bench testing.

Yuichi Takasaki･Kenji Terada･kentaro Kondo･Kohei Yasumoto･Kouichi Eitoku･Yoshihisa Hojo･Daisuke Kozakai (Toyo Denki Seizo)

We have achieved a high capacity, flattened dynamometer that can be installed in the wheel well of a vehicle. This dynamometer is designed to accommodate the vehicle's mechanical brake and has an output per wheel of 160 kW, 800-2500 min-1 and a maximum short-time torque of 3800 Nm.
This paper reports on the evaluation of the application to bench tests, including mechanical braking tests.