Jatropha-Diesel Case Study Solution

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v) The rise in throttle/ speed at constant load operation affect fuel economy more adversely at higher range of throttle/ speed for both the fuels, but this effect is more severe with the diesel. vi) Lower calorific value of the blend has made higher fuel consumption per output for entire range of operation, but change in fuel economy is less affected for rise in speed/ output with the blend than that with the diesel. Variation of exhaust gas temperatures for both the fuels with increase in speed as well as with the increase in output (power) of the engine at constant load have been presented in Fig. 11. Followings are observed; i) Jatropha–blends always have shown higher exhaust temperature for any operating speed or any power development of the engine. ii) Rate of…show more content…
4. CONCLUSION: Based on exhaustive engine tests, it can be concluded that Jatropha- Diesel blend can be adopted as an alternative fuel for existing conventional diesel engines without any major hardware modifications. 1. A diesel engine with existing set of operating variables (suitable for diesel) can also be operated with crude Jatropha- Diesel blend (2:1 by volume) for 3-4 hours continuously without any operative or post operative trouble. 2. Performance of the engine with respect to shaft power generation as well as specific fuel consumption per output power at full and at part throttle operations is fantastically similar with both the fuels. This has also been established rated over and under load of the engine. 3. In existing setting for injection timings valve timings and compression ratio of the engine, diesel oil always exhibits better performance than the blend with respect to higher output and less bsfc and this covers operations through entire range of throttle and
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