Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Investigations of effects of timing injection in four-stroke direct-injection diesel engines performance
Submission Author:
Paulo Gustavo Krejci Nunes , SP
Co-Authors:
Waldyr Gallo, Paulo Gustavo Krejci Nunes
Presenter: Paulo Gustavo Krejci Nunes
doi://10.26678/ABCM.COBEM2017.COB17-0360
Abstract
Models of simulation of thermodynamic nature are useful to predict the performance of internal combustion engines. Once adjusted, the simulation is relative fast and do not need complex experimental apparatus to set the engine's best parameters. In this work, a direct injection diesel engine was simulated under a range of timing injection from 0 to 45 BTDC and three proportions of premixed and diffusive combustion. On the best point of timing injection, the simulation showed the specific fuel consumption was reduced in 18.26 percent and the indicated shaft power increased in 22.37 percent. This results shows clearly that a regular commercial diesel engine have a large field to improve the thermal performance and the thermodynamic simulation is a good tool to support decisionsfor engine project. As long as the technology allows new material resistant to higher thermal or mechanical loads and new techniques to reduce pollutants gases such as nitrous oxide or particulate matter, enginebuilders can explore better performance and efficiency.
Keywords
Diesel engine, thermodynamic, Simulation
