THERMAL EFFECTS ON DIESEL ENGINE PISTONS

After surveying temperature conditions of pistons in nonturbocharged and turbocharged diesel engines and various temperature measurement techniques used to determine piston temperatures, concentration is focused on different parameters in pistons for diesel engines in the diameter range of 100 to 140 mm. Comparative analysis reveals that the piston of an internal combustion engine exhibits a temperature distribution for each specific operating condition that is a function of heat input, thermal conductivity of piston material, and given cross-sections in the piston. If maximum permissible temperatures are exceeded, proper piston operation cannot be guaranteed. With piston cooling, the specific power of engines can be increased and maximum permissible temperatures will not be exceeded. Temperature conditions in naturally aspirated and supercharged engines are contrasted. Examples of important factors in noncooled pistons and pistons with forced oil cooling are cited. Mean values for the effect of changes in engine conditions on piston temperature are presented.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Presented at SAE Off-Highway Vehicle Meeting and Exposition, Milwaukee, Wisconsin, 11-14 September 1978.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Roehrle, M D
• Publication Date: 1978

Media Info

• Pagination: 20 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Diesel engines; Heat; Pistons; Temperature
• Old TRIS Terms: Thermal conditions
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00399024
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 780781, HS-025 592U
• Files: HSL, USDOT
• Created Date: Aug 31 1985 12:00AM