Study of an Engine Operating with Exhaust Gas Recirculation at Different Compression Ratios

Paper #:
  • 982895

Published:
  • 1998-11-09
Citation:
de Souza, M., Vianna, J., and Fraga, A., "Study of an Engine Operating with Exhaust Gas Recirculation at Different Compression Ratios," SAE Technical Paper 982895, 1998, https://doi.org/10.4271/982895.
Pages:
8
Abstract:
This work presents an evaluation of one liter capacity, 4 cylinder engine operating with ‘Exhaust Gas Recirculation’ (EGR) at two compression ratios, 8.9:1 and 9.6:1. The compression ratio is increased, geometrically, within tolerable limits. This is achieved by a reduction in volume of the combustion chamber in order to bring the overall performance of the engine up to the results achieved before the engine was using EGR. The results indicate that the gain in efficiency obtained through increased compression ratios is maintained even with EGR. Moreover, after a certain percentage of the recirculation, the nitrogen oxide (NOX) and carbon monoxide (CO2) emissions are lower than the original engine. Depending on the engine speed, however, the emission of unburned hydrocarbons (HC) are higher than the original engine, and depending on the percentage of EGR, there is a slight loss of torque and power compared to the original.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2011-04-12
Article
2017-03-13
Technical Paper / Journal Article
2011-04-12