Analysis Of Change In Intake Manifold Length And Development Of Variable Intake System
Journal: International Journal of Scientific & Technology Research (Vol.3, No. 5)Publication Date: 2014-05-15
Authors : Shrinath Potul; Rohan Nachnolkar; Sagar Bhave;
Page : 223-228
Keywords : Key Words intake tuning; intake manifold; gas dynamics; engine performance; toque characteristics; simulation; system development.;
Abstract
Abstract Gas dynamics of intake system plays a key role in deciding the performance of an engine. This dynamics are different for fuel injected and carbureted engine and vary according to type of engine number of cylinders temperature at inlet valve timing valve angle and other factors. Careful design of the manifolds enables the engineer designer to manipulate the characteristics to the desired level. This paper investigates the effects of intake runner length on the performance characteristics of a four-stroke single-cylinder spark-ignited engine with electronically controlled fuel injector. In this paper basic intake tuning mechanisms were described. Engine performance characteristics such as brake torque brake power brake mean effective pressure and specific fuel consumption were taken into consideration and virtual simulation software LOTUS ENGINE SIMULATION was used to evaluate the effects of the variation in the length of intake plenum on these parameters. It was found that change in runner length had a considerable effect on the rpm atwhich peak value of torque was obtained occurred. Accordingly a system to adjust the manifold length tuned adjustable intake pipe was designed and developed. According to the simulation graphs in order to increase the torque performance plenum length must be extended for low engine speeds and shortened as the engine speed increases.
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