Study of the short-term cylinder wall temperature oscillations during transient operation of a turbo-charged diesel engine with various insulation schemes

2008 ◽  
Vol 9 (3) ◽  
pp. 177-193 ◽  
Author(s):  
C D Rakopoulos ◽  
E G Giakoumis ◽  
D C Rakopoulos
Keyword(s):  
Diesel Engine ◽  
Wall Temperature ◽  
Cylinder Wall ◽  
Transient Operation ◽  
Short Term ◽  
Temperature Oscillations

scholarly journals Exhaust Gas Emissions and Piston Wall Temperature under Transient Operation in a Small Diesel Engine.

1995 ◽  
Vol 61 (590) ◽  
pp. 3581-3587 ◽  
Author(s):  
K. Iman Reksowardojo ◽  
Toru Kitamura ◽  
Hideyuki Ogawa ◽  
Noboru Miyamoto ◽  
Yoshiteru Enomoto
Keyword(s):  
Diesel Engine ◽  
Wall Temperature ◽  
Exhaust Gas ◽  
Transient Operation ◽  
Gas Emissions ◽  
Exhaust Gas Emissions

Time-Resolved Nature of Exhaust Gas Emissions and Piston Wall Temperature Under Transient Operation in a Small Diesel Engine

1996 ◽  
Author(s):  
Iman K. Reksowardojo ◽  
Hideyuki Ogawa ◽  
Noboru Miyamoto ◽  
Yoshiteru Enomoto ◽  
Toru Kitamura
Keyword(s):  
Diesel Engine ◽  
Wall Temperature ◽  
Exhaust Gas ◽  
Transient Operation ◽  
Gas Emissions ◽  
Time Resolved ◽  
Exhaust Gas Emissions

scholarly journals Experimental Thermal Analysis of Diesel Engine Piston and Cylinder Wall

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Subodh Kumar Sharma ◽  
P. K. Saini ◽  
N. K. Samria
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Wall Temperature ◽  
Thermal Loading ◽  
Thermal Stresses ◽  
Transfer Model ◽  
Cylinder Wall ◽  
Fe Model ◽  
Transfer Coefficients ◽  
Thermocouple Wire

Knowledge of piston and cylinder wall temperature is necessary to estimate the thermal stresses at different points; this gives an idea to the designer to take care of weaker cross section area. Along with that, this temperature also allows the calculation of heat losses through piston and cylinder wall. The proposed methodology has been successfully applied to a water-cooled four-stroke direct-injection diesel engine and it allows the estimation of the piston and cylinder wall temperature. The methodology described here combines numerical simulations based on FEM models and experimental procedures based on the use of thermocouples. Purposes of this investigation are to measure the distortion in the piston, temperature, and radial thermal stresses after thermal loading. To check the validity of the heat transfer model, measure the temperature through direct measurement using thermocouple wire at several points on the piston and cylinder wall. In order to prevent thermocouple wire entanglement, a suitable pathway was designed. Appropriate averaged thermal boundary conditions such as heat transfer coefficients were set on different surfaces for FE model. The study includes the effects of the thermal conductivity of the material of piston, piston rings, and combustion chamber wall. Results show variation of temperature, stresses, and deformation at various points on the piston.

scholarly journals A First Application of Thermographic Phosphors in a Marine Two-Stroke Diesel Engine for Surface Temperature Measurement

2014 ◽  
Author(s):  
Fahd Abou Nada ◽  
Johan Hult ◽  
Christoph Knappe ◽  
Mattias Richter ◽  
Stefan Mayer ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Coating Thickness ◽  
Surface Coating ◽  
Cylinder Wall ◽  
Load Range ◽  
Marine Research ◽  
Surface Temperature Measurement ◽  
Thermographic Phosphors ◽  
Phosphor Thermometry ◽  
First Time

Phosphor thermometry is applied for the first time in a large-bore two-stroke diesel engine. The work proves the practicality of phosphor thermometry in large-bore engines. The experiments were conducted on the MAN 4T50ME-X marine research engine equipped with an optical cylinder head. By employing a thin surface coating of CdWO4 phosphor, cycle resolved temperature measurements of the cylinder wall were obtained. Motored and fired engine operations were tested at engine loads covering the low and medium engine load range. Phosphor thermometry proved to be successful in retrieving the temperature with standard deviations ranging around 1–8 K. Experimental considerations like detector linearity, coating thickness and an automated phosphor calibration routine will be addressed.

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