Thermal Science 2011 Volume 15, Issue 4, Pages: 961-974
https://doi.org/10.2298/TSCI101010048D
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The realization and analysis of a new thermodynamic cycle for internal combustion engine
Dorić Jovan Ž. (Faculty of Technical Sciences, Novi Sad)
Klinar Ivan J. (Faculty of Technical Sciences, Novi Sad)
This paper presents description and thermodynamic analysis of a new
thermodynamic cycle. Realization of this new cycle is possible to achieve
with valveless internal combustion engine with more complete expansion. The
main purpose of this new IC engine is to increase engines’ thermal
efficiency. The engine was designed so that the thermodynamic changes of the
working fluid are different than in conventional engines. Specific
differences are reflected in a more complete expansion of the working fluid
(the expansion stroke is larger than compression stroke), valveless gas
flowing and complete discharge of residual combustion products from the
combustion chamber. In this concept, the movement of the piston is different
than in conventional piston mechanisms. The results obtained herein include
the efficiency characteristics of irreversible reciprocating new engine cycle
which is very similar to Miller cycle. The results show that with this
thermodynamic cycle engine has higher efficiency than with the standard Otto
cycle. In this article, the patent application material under number 2008/607
at the Intellectual Property Office of the Republic of Serbia was used.
Keywords: efficiency, IC engine, Miller cycle