29/07/2019
Interesting studies happening in the world of h**p!
H**p Research & Awareness (Q&A 15)
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Q. Do we need to do any engine modifications in existing vehicles to suit h**p diesel?
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Answer: In this present investigation deccan h**p oil, a non-edible vegetable oil is selected for the test on a diesel engine and its suitability as an alternate fuel is examined.
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The viscosity of deccan h**p oil is reduced first by blending with diesel in 25/75%, 50/50%, 75/25%, 100/0% on volume basis, then analyzed and compared with diesel.
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Further blends are heated and effect of viscosity on temperature was studied.
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The performance and emission characteristics of blends are evaluated at variable loads of 0.37, 0.92, 1.48, 2.03, 2.58, 3.13 and 3.68 kW at a constant rated speed of 1500 rpm and results are compared with diesel.
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The thermal efficiency, brake specific fuel consumption (BSFC), and brake specific energy consumption (BSEC) are well comparable with diesel, and emissions are a little higher for 25% and 50% blends.
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At rated load, smoke, carbon monoxide (CO), and unburnt hydrocarbon (HC) emissions of 50% blend are higher compared with diesel by 51.74%, 71.42% and 33.3%, respectively.
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For ascertaining the validity of results obtained, pure deccan h**p oil results are compared with results of jatropha and pongamia oil for similar works available in the literature and were well comparable.
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From investigation, it has been established that, up to 25% of blend of deccan h**p oil without heating and up to 50% blend with preheating can be substituted for diesel engine without any engine modification.
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