Diesel Engine Combustion Program at the Defence Research Establishment Ottawa.
Abstract
Development of laser diagnostics for combustion and flowfield studies at the Defence Research Establishment Ottawa (DREO), and its application to a practical combustion device is described. The optical diagnostics discussed are coherent anti-Stokes Raman spectroscopy (CARS), and various flow/spray visualization (FSV) techniques. The CARS technique provides temporally and spatially resolved measurements of temperature and major species concentrations. Various laser based FSV techniques, such as shadowgraph, Schlieren and direct visualization, and their use to study density gradients and spray behavior are described. The use in these experiments of a dual color pulsed laser transmitter can provide velocity information. The goal of the diesel combustion modelling program is to attempt to predict the effect of any candidate fuel on diesel engines performance. Experimental results from the optical diagnostics will be used to validate and improve the models. Constraints on performing optical diagnostics in diesel engines, and requirements and selection of a research diesel engine are discussed. The suitability of the Ricardo Proteus engine for this project is evaluated. The advantages of using electronic fuel injection on this research engine are also reviewed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1985
- Accession Number
- ADA176438
Entities
People
- David R. Snelling
- Gregory J. Smallwood
- W. S. Neill
Organizations
- Defence Research and Development Canada