Search Results

To aid Original Equipment Manufacturers (OEM) in meeting future Real Driving Emissions (RDE) regulation criteria [1] across extended environmental conditions, a Road to Rig (R2R) whole vehicle development, calibration and verification approach, currently known as RDE Plus (RDE+), has been developed at HORIBA. In this paper, the methodologies required for replicating real RDE road tests on a chassis dynamometer are discussed in depth. These include application of robot driver for successful cycle replication and repeatability and use of HORIBA’s Multi-function Efficient Dynamic Altitude Simulation (MEDAS) system in conjunction with a temperature and humidity controlled test cell to replicate the engine, vehicle and environmental conditions. For RDE replication using a robot driver, two methods are presented.

To aid Original Equipment Manufacturers (OEM) in meeting Real Driving Emissions (RDE) regulation criteria [1] across the moderate and extended boundary conditions of temperature, altitude and driving style, an integrated Road to Rig (R2R) whole vehicle development, calibration and verification approach known as RDE Plus (RDE+) has been developed by HORIBA. Connecting testing on the road, chassis dynamometer, Engine-in-the-Loop (EiL) and virtual testing methodologies, real world driving scenarios can be deployed by OEMs further upstream during vehicle and engine development programmes; hence reducing development timescales and costs that will otherwise inevitably increase due to RDE regulations. Reported in the current paper is a brief introduction to the baseline RDE road tests followed by replication of several real RDE cycles that cover the RDE moderate and extended boundary conditions with the vehicle driven by a robot driver on the chassis dynamometer.