Observation of Flow Characteristics in a Model I.C. Engine Cylinder

780230

02/01/1978

Event
1978 Automotive Engineering Congress and Exposition
Authors Abstract
Content
A study of fluid mechanical effects on unburned hydrocarbon generation has been made in a single compression-expansion model automobile engine. Full optical access has allowed color schlieren observations of gas motion inside the engine cylinder. Motion pictures of the gas motion and flame propagation have been taken at a rate of seven thousand frames per second for the following cases:
  1. 1)
    intake stroke
  2. 2)
    exhaust stroke
  3. 3)
    compression power stroke with combustion and blow-down with appropriate exhaust valve opening.
Unburned fuel concentrations were measured by means of a gas chromatograph. The results show that turbulent motion of the mixture increases the amount of unburned fuel. It is implied that the rolled-up vortices play an important role on wall flame quenching processes in an engine.
Meta TagsDetails
DOI
https://doi.org/10.4271/780230
Pages
10
Citation
Ishikawa, N., and Daily, J., "Observation of Flow Characteristics in a Model I.C. Engine Cylinder," SAE Technical Paper 780230, 1978, https://doi.org/10.4271/780230.
Additional Details
Publisher
Published
Feb 1, 1978
Product Code
780230
Content Type
Technical Paper
Language
English