1931-01-01

Combustion and Design Problems of Light High-Speed Diesel Engines 310011

MORE attention must be paid to light-weight design and to flexible combustion control if the Diesel engine is to become a serious competitor of the gasoline engine. The relative merits of existing types of combustion-chamber and injection systems used in present commercial four-cycle engines are discussed, and it is shown that the single-turbulence-chamber type offers the most promising means to high mean effective pressures at low fuel consumption. Stock high-pressure fuel-pumps and injection-valves, produced in volume by specialists, will have a great influence on the production of high-speed Diesel engines. The interrelation of combustion and injection processes in controlled-turbulence combustion-chambers is explained, and design details and test results are given of the practical application of single-chamber principles and of a stock injection system to flexible combustion control in a recently developed high-speed four-cycle engine.
Factors limiting mean effective pressure and piston speeds are discussed, as are also the mechanical problems of design, cooling and lubrication of vital parts. In comparing Diesel-engine with gasoline-engine weights, due allowance is made for the difference in maximum gas pressures.
The illustrations show examples of various combustion-chamber designs and design details and photographs of DeLaVergne high-speed engines.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 16% 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

Experimental Results on the Effect of Piston Surface Roughness and Porosity on Diesel Engine Combustion

960036

View Details

TECHNICAL PAPER

Experimental Investigation of Film-Space Atomization Combustion in D.I. Diesel Engines

901578

View Details

TECHNICAL PAPER

Characterization of Combustion Processes in the Prechamber and Main Chamber of an Indirect Injection Diesel Engine by High-Speed Photography

861181

View Details

X