Effect of Direct Water Injection on Performance and Emission Characteristics of Diesel Engine Fueled With Bio Diesel and Hydrogen

Author(s):

P. L. Navaneethakrishnan , Adithya Institute of Technology, Coimbatore, India; N. Udhayakumar, Adithya Institute of Technology, Coimbatore, India; M. K. Sathish Kumar, Adithya Institute of Technology, Coimbatore, India; B. Charles, Adithya Institute of Technology, Coimbatore, India, Adithya Institute of Technology, Coimbatore, India

Keywords:

C.I Engines, BTE, BSFC, HC, NOx, and CO

Abstract:

Due to increase in fuel consumption and depleting oil resources it became a mandatory to search for alternative fuel source for powering vehicles. This work examines experimentally the effect of direct water injection strategies on performance and emissions characteristics of hydrogen and bio diesel fuelled direct injection diesel engine. The experiment is conducted for no load, 20%, 40%, 60%, 80% and 100% of rated load. The brake specific fuel consumption of diesel and 100 % pungam bio diesel is almost same at 75% loads and it will vary slightly at full load conditions. The hydrogen injection will show that it will decrease the BSFC gradually from no load to full load. But water injection will slightly increase the BSFC of 0.035 as compared 4 lpm hydrogen without water injection. As per emission of test engine is concerned NOx and CO2 are reduced greatly with water injection, but NOx emission will increase greatly without water injection as increase in hydrogen flow rates. There is about 80-82 % reduction in NOx emission is observed for water injection due to it decrease the local flame temperature produced by the hydrogen , which became major reason for NOx formation in diesel engines. The major drawback observed while in water injection was tremendous increase in HC emissions; there is 50-60 % improvement in HC emission was observed at high loads. It is due to water injection greatly disturbs the combustion of diesel engine which became a cause for increase in HC emissions. The major problem is smoke intensity. Engine will produce enormous amount of smoke while water is injected.

Other Details:

Manuscript Id	:	IJSTEV3I5080
Published in	:	Volume : 3, Issue : 5
Publication Date	:	01/12/2016
Page(s)	:	101-106

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