Experimental study on flat-wall impinging spray flame and its heat flux on wall under diesel engine–like condition: First report—effect of impingement distance

2018 ◽  
Vol 233 (8) ◽  
pp. 2187-2202 ◽  
Author(s):  
Rizal Mahmud ◽  
Toru Kurisu ◽  
Keiya Nishida ◽  
Yoichi Ogata ◽  
Jun Kanzaki ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Flux ◽  
Diesel Engine ◽  
First Report ◽  
Flat Wall ◽  
Spray Flame

Experimental Study on Boiling Heat Transfer in Cylinder Head Jacket

2012 ◽  
Vol 433-440 ◽  
pp. 18-23
Author(s):  
Xiao Liu ◽  
Yuan Fu Cao ◽  
Ti En Zhang
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Flux ◽  
Diesel Engine ◽  
Flow Rate ◽  
Cylinder Head ◽  
Boiling Heat Transfer ◽  
Practical Application ◽  
Inlet Velocity ◽  
Inlet Flow Rate

Experiments of the valve bridge are carried out and the boiling states are investigated, to study the boiling heat transfer in cylinder head jacket. The effects of inlet flow rate and temperature on boiling heat flux are analyzed, as well as the thickness of fire deck. The results show that the inlet velocity has little effect on the velocity in valve bridge zone, even the velocity in the valve bridge zone can strongly affect on boiling heat transfer. The results can offer references to practical application in power-enhanced diesel engine.

An experimental study of engine characteristics and tailpipe emissions from modern DI diesel engine fuelled with methanol/diesel blends

2021 ◽  
Vol 220 ◽  
pp. 106901
Author(s):  
Ahmad O. Hasan ◽  
Ahmed I. Osman ◽  
Ala'a H. Al-Muhtaseb ◽  
Hani Al-Rawashdeh ◽  
Ahmad Abu-jrai ◽  
...  
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Di Diesel Engine

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.

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