THERMAL LOADING OF THE CYLINDER HEAD OF A DIVIDED-CHAMBER DIESEL ENGINE

Time-averaged combustion chamber surface temperatures and surface heat fluxes were measured at three locations (one in the antechamber and two in the main chamber) on the head of a single-cylinder, divided-chamber diesel engine. In general the surface temperature and heat flux were found to increase with increasing engine speed, fuel-air ratio and intake-air temperature, decreasing coolant temperature and advancing combustion timing. At motored conditions the highest heat flux was at the antechamber location. This was caused by the high swirl flows present in the antechamber. In contrast, at all other conditions the highest heat flux was measured at the location in the main chamber near the valves. This was attributed to the convective action of the high-temperature stream of combustion gases exiting the antechamber during the expansion stroke. Lastly, the local surface heat flux measurements were correlated in terms of the air and fuel consumption rates of the engine.

Supplemental Notes:
- State-of-the-Art on Design and Performance of Diesel Power Cylinder Components SP-552. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
Corporate Authors:
Society of Automotive Engineers (SAE)

400 Commonwealth Drive
Warrendale, PA United States 15096
Authors:
- Alkidas, A C
- COLE, R M
Publication Date: 1983-9

Media Info

Features: Figures; References; Tables;
Pagination: p. 111-123
Serial:
- Publication of: Pergamon Press Limited
- Publisher: Pergamon Press, Incorporated

Subject/Index Terms

TRT Terms: Combustion chambers; Cylinder heads; Diesel engines; Temperature measurement; Testing; Thermal stresses
Uncontrolled Terms: Thermal loads
Subject Areas: Safety and Human Factors;

Filing Info

Accession Number: 00381952
Record Type: Publication
Source Agency: National Highway Traffic Safety Administration
Report/Paper Numbers: SAE 831325, HS-036 096
Files: HSL, USDOT
Created Date: Mar 30 1984 12:00AM