I want to find out the average engine cylinder wall temperature at various loads and compression ratios. I have the data for mean gas temperature, exhaust gas temperature and cooling water in and out temperatures. Please let me know if there are methods (mathematical models) or ways to calculate the cylinder wall temperature. What is the apparatus used if it has to be practically measured?
I recommend you to read this two important papers: Internal Combustion Engine Heat Transfer - Gary Borman and Kazuie Nishiwaki (1987).
There is another well-known investigation about how do it, written By Rokopoulos and co-authors : "Experimental and theoretical study of the short term response temperature transients in the cylinder walls of a diesel engine at various operating conditions".
I hope that you will find out your answers inside these papers. I am looking forward to hearing about your studies in this area.
You can use phase change material placed inside the cylinder and then calculate its depletion to get an approximate temperature range. Only definitive way I can think.
I recommend you to read this two important papers: Internal Combustion Engine Heat Transfer - Gary Borman and Kazuie Nishiwaki (1987).
There is another well-known investigation about how do it, written By Rokopoulos and co-authors : "Experimental and theoretical study of the short term response temperature transients in the cylinder walls of a diesel engine at various operating conditions".
I hope that you will find out your answers inside these papers. I am looking forward to hearing about your studies in this area.
You can use an electrical analogy with thermal capacities on the metal parts and thermal resistances that link the metals. For the gases it is a forced convective resistance, in the metal the thermal resitance is a conductive logarithmic one.
Here You can find all the thermal model:
http://www.sciencedirect.com/science/article/pii/S0196890413003816
You can ask me in private a full paper if You can't find it easily.
can this be measured by using thermocouple as in case EGT measurement (with suitable metal combination)? i am very much eager to know it.
thanks
the temperature of cylinder walls can be measured by thermocouple K (Chromel/Alumel). It needs particular accuracy to place them in the facing gases portion of the cylinder
I think K-type thermocouple has a response time slower than the temperature fluctuation of the cylinder wall. Use of thermal imaging equipment may be a good shortcut
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