VR/LE Engine Concept Application to the Turbocharged Diesel Engine

Paper #:
  • 911788

Published:
  • 1991-09-01
Citation:
Rychter, T., Teodorczyk, A., Stone, C., Leonard, H. et al., "VR/LE Engine Concept Application to the Turbocharged Diesel Engine," SAE Technical Paper 911788, 1991, https://doi.org/10.4271/911788.
Pages:
10
Abstract:
A variable compression ratio concept that can give a different expansion ratio to the compression ratio has been evaluated by means of a simulation of a turbocharged diesel engine. The VR/LE mechanism kinematics have been defined and described, and the compression ratio and expansion ratio have been presented as a function of the eccentric phase angle (αo). A zero-dimensional engine simulation that has been the subject of comprehensive validation, has been used as the basis of the VR/LE study. The effect of the compression ratio on the engine performance at fixed loads is presented. The principal benefits are a reduction in fuel consumption at part load of about 2%, and a reduction in ignition delay that leads to an estimated 6 dB reduction in combustion noise. The study has been conducted within the assumption of a maximum cylinder pressure of 160 bar.
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

Training / Education
2018-06-04
Technical Paper / Journal Article
2010-09-28
Training / Education
2018-03-27