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This research quantifies the real-world emissions and fuel economy of a BS-VI motorcycle. The emissions estimation by standard driving cycles in the laboratory does not represent the emissions factors estimated in real-world driving experience on road. In real-world driving conditions, the emissions of motorcycles were influenced by vehicle driving patterns and traffic conditions. The time-speed data was collected during peak and non-peak hours on weekdays and weekends. The fuel economy and emissions factors were estimated for peak and non-peak hours by simulating the time-speed data on a chassis dynamometer interfaced with a gravimetric fuel consumption meter and a 5-gas analyzer. The average and maximum speeds of 29 km/h and 60 km/h in urban, 33 km/h and 72 km/h in rural, and 47 km/h and 79 km/h on highways respectively were observed. The CO and HC emissions were higher during peak hours on weekdays in urban traffic conditions compared to other traffic conditions.

Butanol is one of the potential alternative fuels that can be used in IC engines in the same way as gasoline. This paper investigates the application of butanol as a blending component for gasoline fuel used in single cylinder four stroke motorcycle engine. Different blending ratio of 5, 10, 20 & 30% butanol-gasoline prepared were used for the study. The motorcycle engine tested on the chassis dynamometer had displacement of 100 cm3. The performance testing under steady state were simulated by running the vehicle on road load simulation and wide open throttle test modes at steady speeds of 40, 50, 60 and 70 km/h. The fuels were also examined using transient Indian Driving Cycle. The test results indicated that butanol-gasoline blended fuel can be a promising alternate for automotive application.