Abstract
Real driving emission regulations using portable emission measurement systems (PEMS) will be applied from October 2022 for light and medium-duty diesel vehicles in Japan. This means that during vehicle development it is more important to consider various situations. However, since an actual driving test depends on the surrounding traffic conditions and the weather, there is a high possibility that a test cannot be completed. For efficient vehicle development, it is necessary to develop an evaluation method that can simulate real driving emission in the laboratory. In this research, a random cycle generator (RCG) that can generate a real driving cycle that simulates various traffic situations was developed. Furthermore, the random cycle was run on an environmental chassis dynamometer. As a result, an alternative evaluation method for real driving emission (RDE) tests was proposed, which is not affected by actual traffic conditions or weather.
