Photographic Study of Combustion in Compression-Ignition Engine

340094

01/01/1934

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
THIS combustion study was made in a high-speed compression-ignition engine. A high-speed motion-picture camera and an optical indicator were used to take motion pictures of the flame travel and the pressure development during combustion in the N.A.C.A. combustion apparatus. Tests were made in which both the injection-advance angle and the engine-coolant temperature were varied. The results show that, in a compression-ignition engine with a quiescent combustion-chamber, the flame first appears in the spray envelope and from there spreads to other parts of the chamber. The course of the combustion is controlled by the temperature and pressure of the air in the chamber from the time at which the fuel is injected until the time at which combustion starts.
The conclusion is presented that, in a compression-ignition engine, the ignition lag should be decreased to the largest value that can be used without excessive rate of pressure rise. Any further decrease in this lag decreases the combustion efficiency of the engine.
Meta TagsDetails
DOI
https://doi.org/10.4271/340094
Pages
9
Citation
Rothrock, A., "Photographic Study of Combustion in Compression-Ignition Engine," SAE Technical Paper 340094, 1934, https://doi.org/10.4271/340094.
Additional Details
Publisher
Published
Jan 1, 1934
Product Code
340094
Content Type
Technical Paper
Language
English