Measurements of instantaneous heat flux to metal and ceramic surfaces in a diesel engine

Technical Report · Sun Feb 01 00:00:00 EST 1987

OSTI ID:6420765

Huang, J C; Borman, G L

The effects of surface materials and extent of insulation on the heat transfer to the head of an open-chamber diesel were studied. A large instrumentation plug designed to incorporate plates of various materials on the gas-side surface was utilized with a special research head. Instantaneous rates of heat transfer to the plate gas-side surface were measured. Measurement results obtained with a zirconia plate and an insulated metal plate are compared to data for an inunsulated metal plate. The insulation of the metal plate increased its gas-side surface temperature over the uninsulated case by about the same amount achieved with a 6.35-mm-thick zirconia plate. The magnitude of the surface temperature swing for zirconia is not as high as expected from conduction theory, but is substantially higher than that for the uninsulated metal. Significant reductions of steady-state heat fluxes were achieved with both the zirconia and the insulated metal compared to the uninsulated metal.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 6420765
• Report Number(s): AD-A-179826/3/XAB
• Resource Relation: Other Information: Pub. in International Congress and Exposition, 137-152, 23-27(Feb 1987)
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING
36 MATERIALS SCIENCE
DIESEL ENGINES
HEAT TRANSFER
THERMAL INSULATION
MEASURING METHODS
CERAMICS
HEAT FLUX
MATERIALS
METALS
SURFACES
THERMOCOUPLES
THIN FILMS
ZIRCONIUM OXIDES
CHALCOGENIDES
ELEMENTS
ENERGY TRANSFER
ENGINES
FILMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
330102* - Internal Combustion Engines- Diesel
420400 - Engineering- Heat Transfer & Fluid Flow
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties