Effect of Surface Temperature on Wear of Diesel-Engine Cylinders and Piston Rings

1955 ◽  
Author(s):  
H. V. Nutt ◽  
E. W. Landen ◽  
J. A. Edgar
Keyword(s):  
Diesel Engine ◽  
Surface Temperature ◽  
Piston Rings ◽  
Effect Of Surface

High-output diesel engine heat transfer: Part 1 - comparison between piston heat flux and global energy balance

2021 ◽  
pp. 146808742110170
Author(s):  
Eric Gingrich ◽  
Michael Tess ◽  
Vamshi Korivi ◽  
Jaal Ghandhi
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Diesel Engine ◽  
Surface Temperature ◽  
Fast Response ◽  
Temperature Data ◽  
Start Of Injection ◽  
Local Measurements ◽  
Surface Temperature Data ◽  
High Output

High-output diesel engine heat transfer measurements are presented in this paper, which is the first of a two-part series of papers. Local piston heat transfer, based on fast-response piston surface temperature data, is compared to global engine heat transfer based on thermodynamic data. A single-cylinder research engine was operated at multiple conditions, including very high-output cases – 30 bar IMEPg and 250 bar in-cylinder pressure. A wireless telemetry system was used to acquire fast-response piston surface temperature data, from which heat flux was calculated. An interpolation and averaging procedure was developed and a method to recover the steady-state portion of the heat flux based on the in-cylinder thermodynamic state was applied. The local measurements were spatially integrated to find total heat transfer, which was found to agree well with the global thermodynamic measurements. A delayed onset of the rise of spatially averaged heat flux was observed for later start of injection timings. The dataset is internally consistent, for example, the local measurements match the global values, which makes it well suited for heat transfer correlation development; this development is pursued in the second part of this paper.

The Starved Lubrication of Piston Rings in a Diesel Engine

1978 ◽  
Vol 20 (6) ◽  
pp. 345-352 ◽  
Author(s):  
S. L. Moore ◽  
G. M. Hamilton
Keyword(s):  
Diesel Engine ◽  
Film Thickness ◽  
Cylinder Liner ◽  
Piston Rings ◽  
Starved Lubrication

Miniature pressure and film thickness transducers mounted in the cylinder liner of a diesel engine have been used to study the lubrication of piston rings. The method of using the gauges to determine oil starvation in the inlet of the rings is described and results from a working engine are presented. Calculations for both starved and fully flooded rings have been carried out and are compared with the measured results.

Effect of surface temperature on the sorption of hydrogen by Pd(111)

1987 ◽  
Vol 181 (3) ◽  
pp. L147-L155 ◽  
Author(s):  
G.E. Gdowski ◽  
T.E. Felter ◽  
R.H. Stulen
Keyword(s):  
Surface Temperature ◽  
Effect Of Surface
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