1964-01-01

SOME MORE LIGHT ON DIESEL COMBUSTION 640446

This paper discusses the process of combustion, as revealed by high speed cinematography, in a small high speed diesel. Two direct injection types and one prechamber type were examined, and combustion sequences are shown. The phenomena are complex, but the main features are:
  1. (1)
    In small engines much of the fuel strikes the chamber wall and moves along it.
  2. (2)
    Swirl is greater than has hitherto been supposed, squish much less.
  3. (3)
    Most of the flame is of the carbon-rich diffusion type.
  4. (4)
    Soot from very rich mixture is always formed at high loads, but can burn later leaving a clean exhaust.
  5. (5)
    Combustion knock does not seem to be related to the total fuel in the chamber on ignition, but rather to the amount of fast burning mixture present.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Spark Assist for CA50 Control and Improved Robustness in a Premixed LTGC Engine – Effects of Equivalence Ratio and Intake Boost

2018-01-1252

View Details

TECHNICAL PAPER

Particle Approximation Applied to Diesel Combustion: Effects of Initial Distribution and Particle Number

2007-24-0100

View Details

TECHNICAL PAPER

Effects of Microwave Enhanced Plasma on Diesel Spray Combustion

2017-01-0707

View Details

X