SLOW-MOTION STUDY Of Injection and Combustion of Fuel In a Diesel Engine 450235

STILLS from motion pictures taken at the rate of 40,000 photographs per sec are presented here, showing the injection and combustion of fuel in a diesel engine, as observed through glass windows mounted in the cylinder head. The various events, when seen on the motion-picture screen, are slowed down to 2500 times their true duration.
Results are compared with single-orifice and multiple-orifice fuel-injection nozzles.
Relations are demonstrated between injection-advance angle, ignition lag, fuel vaporization, smoke formation, and diesel knock as characterized by quick inflammation of the fuel charge.
Production of mixtures too lean for combustion is demonstrated with very early injection and small fuel quantities.


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