MEASUREMENTS OF EMISSION FACTORS AND FUEL CONSUMPTION FOR MOTORCYCLES ON A CHASSIS DYNAMOMETER BASED ON A LOCALIZED DRIVING CYCLE

Abstract

A localized driving cycle for motorcycles has been developed for Hanoi, Vietnam after extensive road tests. The driving cycle known as the HMDC driving cycle (Hanoi Motorcycle Driving Cycle), takes into account the road infrastructure, traffic patterns and driver’s behavior in the Hanoi metropolitan area. The driving cycle developed from time - speed data of 343 driving trips has 1 250 seconds in length and 7 067 meters in distance with a maximum speed and an average speed of 39.4 and 20.4 km/h, respectively. The developed HMDC driving cycle together with the European driving cycle (ECE R40) was then implemented on new/in-use selected motorcycles using a chassis dynamometer, from which the CO, THC, CO2, NOx emission factors and fuel consumption were obtained. The emission factors of THC, CO, CO2 and fuel consumption obtained during HMDC are comparable with those during ECE R40 but it is 66.7% different with NOx emission factor.