Study of the Effects of Flow Box Utilization on Charge Motion and Mixture Formation in an Internal Combustion Engine Mobility Technology Center - Federal University of Minas Ger

Format:

Conference/Event

Author/Creator:

de Castro Radicchi, de Castro Radicchi, author.

Contributor:

de Ferreira Gomes, Paulo César

Franieck, Erwin Karl

Lopes, Gustavo Santos

Reis, Leonardo Mayer

Silva, Bruno Vieira

Valle, Ramon Molina

Conference Name:

26th SAE BRASIL Inernational Congress and Display (2017-11-07 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2017

Summary:

AbstractThe analysis of the air motion inside the cylinders of an internal combustion engine constitutes a very important step during engines design. It is already known that its movement, normally decomposed in tumble and swirl motion, is totally related to the majority of phenomena which occur inside cylinder, like fuel evaporation, mixture formation or flame propagation. The use of mechanical devices in the intake system represents an interesting option in the attempt of optimizing the airflow and finding the best condition for maximum power and minimum specific fuel consumption. Devices like flow boxes, which control the airflow and change its main characteristics before entering the cylinder, by obstructing the air and changing its directions, are one possibility. Based on this idea, this paper presents a numerical analysis of the utilization of a flow box in the intake system of a spark ignition engine. By means of tridimensional simulations of a four valve Single Cylinder Research Engine - SCRE, the use of a relatively simple flow box is evaluated for a chosen condition, in this case an operation at 1000 rpm with a volumetric ratio of 11.5:1. The swirl and tumble generated by the flow box are numerically measured for many instants of the engine cycle, in order to determine if the air motion is being hold during all compression stroke. In addition, these results are evaluated and compared for different load operations. Finally, a spray injection analysis is made to confirm some assumptions

Notes:

Vendor supplied data

Publisher Number:

2017-36-0335

Access Restriction:

Restricted for use by site license