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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.

Using an indigenous gasoline engine of popular car, Maruti 800 in India, two dynamometer tests, namely Maruti IIID and Maruti IIIE have been developed as an alternate to the standard ASTM Sequence IIID/IIIE tests used for assessing high temperature thickening characteristics of crankcase engine oils. Various changes in engine hardware and operating conditions (blowby, speed/load, air to fuel ratio, ignition time etc) have been incorporated to achieve the adequate level of test severity to discriminate oil of different quality levels. An engine oil of API SF performance level has been used as reference oil for developing the Maruti tests. An attempt has been made to correlate the Maruti IIID/IIIE test with the ASTM Sequence IIID/IIIE test by generating data simultaneously on the Maruti and the ASTM test benches using four commercial engine oils of different performance levels.