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Performance evaluation of a magnetorheological fluid variable valve

DSpace at IIT Bombay

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Title Performance evaluation of a magnetorheological fluid variable valve
 
Creator HIRANI, H
MANJUNATHA, CS
 
Subject actuator
variable-valve lift mechanism
engine valve
design of variable-valve mechanism
application of mr fluid
variable-flow device
 
Description The present paper describes the conceptual design, simulation, and fabrication of a magnetorheological (MR) fluid variable-valve actuation (WA) system. Two set-ups, one for testing the conceptual design and the other for application of the MR valve on a real engine, have been developed. The test set-up measures the displacement of the valve, which operates by the cam-follower mechanism. The results of valve lifts at different speeds and control currents are presented. To implement the MR fluid VVA system, a four-stroke single-cylinder Kirloskar TV1 vertical diesel engine has been selected. Inlet and exhaust manifolds have been modelled to estimate volumetric efficiency. The equations governing the unsteady air flow in the ducts have been solved using the method of characteristics. A numerical code to simulate the entire gas exchange process has been developed, and the results have been compared with the experimental results. Further, this code has been used to identify the optimal valve lift requirements of the engine at various crankshaft speeds. The quantified requirements obtained have been used for the design of an MR fluid VVA system. A prototype MR VVA system has been developed. Experimental results are reported in the form of maximum valve lift variation with speed and d.c. current.
 
Publisher PROFESSIONAL ENGINEERING PUBLISHING LTD
 
Date 2011-08-27T08:25:25Z
2011-12-26T12:57:49Z
2011-12-27T05:45:28Z
2011-08-27T08:25:25Z
2011-12-26T12:57:49Z
2011-12-27T05:45:28Z
2007
 
Type Article
 
Identifier PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 221(D1), 83-93
0954-4070
http://dx.doi.org/10.1243/09544070JAUTO408
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11601
http://hdl.handle.net/10054/11601
 
Language en