Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THERMODYNAMIC ANALYSIS OF ADIABATIC EXTERNAL COMBUSTION ENGINE
Submission Author:
Silvio Dalmolin , PR , Brazil
Co-Authors:
Silvio Dalmolin, Matias Nicolas Muñoz, JOSÉ VIRIATO COELHO VARGAS
Presenter: Silvio Dalmolin
doi://10.26678/ABCM.COBEM2019.COB2019-1881
Abstract
Thermodynamic analysis of a combustion engine with external and adiabatic combustion chamber (EACE) is accomplished. The admission and compression strokes happen in separated cylinders from expansion and exhaust; In addition, the combustion carry out in an external and adiabatic fixed volume chamber; Inside the chamber, because the combustion heat input, occurs an isochoric compression with increasing pressure and temperature, similar that occurs in the Carnot cycle; The EACE has five strokes. A comparative thermodynamic analysis between a market compression ignition combustion engine (IC-ICE) and an EACE, with same volumetric displacement, is carry out. The thermal performance of machines are evaluated through a simplified mathematical model; Moreover, the mass and energy balances are calculated; the thermal efficiency of the new proposed motor is around 45%; Being greater than conventional chosen engine, that is only 34%.
Keywords
Adiabatic engine, Internal combustion engine, external combustion engine, THERMODINAMIC ANALYZE
