Heavy-Duty Diesel Piston Thermal Analysis: High-Temperature Alloys

Abstract

Objective: Support a research program investigating the use of commercial and developmental high-temperature alloys in a heavy-duty diesel piston application. Methods: Perform a Steady-State Thermal-Stress Analysis to predict the piston temperature profile1. Given experimental measurements of piston surface heat flux (p.3) and subsurface temperature (p.4) for microalloyed steel (MAS) piston, calibrate the under-crown heat transfer coefficients (p.5) in the model. 2. Given experimental surface heat flux and calibrated heat transfer coefficients from previous step, model the piston temperature profiles (p.7) when changing to conductivity of high-temperature commercial alloys A286 (UNS S66286), 422 (S42200), DH31-EX (Daido Steel), and H10 (T20810). Perform a fatigue analysis (not shown in this presentation).

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 2020
Accession Number
AD1112994

Entities

People

  • Eric C Gingrich
  • Gerald Byrd
  • Michael Tess
  • Vamshi Korivi

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coefficients
  • Conductivity
  • Diesel Engines
  • Engines
  • Experimental Data
  • Flow Rate
  • Heat Energy
  • Heat Flux
  • Heat Resistant Alloys
  • Heat Transfer
  • Heat Transfer Coefficients
  • Heavy Duty
  • High Temperature
  • Measurement
  • Pistons
  • Steady State
  • Stress Analysis
  • Structural Analysis
  • Surface Temperature
  • Thermal Conductivity

Readers

  • Petroleum Engineering
  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.