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

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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).

Author(s):
Byrd, Gerald ; Tess, Michael ; Gingrich, Eric ; Korivi, Vamshi
Author Organization(s):
US Army Combat Capabilities Development Command, Ground Vehicle Systems Center
Funding Organization(s):
Publication Date:
2020 Oct 15
Pagination:
0

Security Markings

RECORD

Collection: TRECMS
Subject Terms
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
heat transfer, heat transfer coefficients, heat flux, high temperature, engines, flow rate, measurement, coefficients, diesel engines, heat energy, heavy duty, stress analysis, conductivity, experimental data, heat resistant alloys, pistons, steady state
Keyword(s):
HIGH TEMPERATURE ALLOYS, HEAVY DUTY DIESEL PISTONs
Subject Categories:
Propulsion, Engines and Fuels; Physics; Materials
Update Date:
2020 Nov 30