Abstract
Recently, to improve vehicle fuel economy, as well as the performance of internal combustion engines, optimized system matching between a vehicle’s drivetrain and engine has become a very important technical issue. For this reason, the need for simulation research on engine and vehicle performance improvement has increased. But in general, since both engine simulation and vehicle simulation require initial engine calibration map input, a simple engine calibration method is required for the efficient configuration of various virtual engine calibration map setups. On this background, in this study, an example of waste gate turbocharger (WGT) cooled — exhaust gas recirculation (EGR) Diesel engine calibration using a test-based mean value engine model is presented as a suitable engine calibration map setting method. Also, the feasibility of an engine calibration model is confirmed through various engine tests. Using the simple model presented here, it is possible for diverse engine operating conditions and engine performance maps to be acquired.
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Abbreviations
- AF(λ):
-
air-fuel ratio
- Cp :
-
specific heat ratio
- cp :
-
mean piston speed
- D :
-
blade diameter
- Dp :
-
differential pressure
- EGR :
-
EGR rate
- FMEP :
-
friction mean effective pressure
- H :
-
head
- k :
-
coefficients
- ṁ :
-
mass flow rate
- M :
-
compressor inlet Mach number
- N :
-
rotational speed
- PMEP :
-
pumping mean effective pressure
- p :
-
pressure
- Q̇ heat :
-
energy of gas
- Q s :
-
corrected air flow rate
- R:
-
gas constant
- stroke :
-
engine stroke
- T :
-
temperature
- U:
-
blade tip speed
- γ :
-
specific heat ratio
- η :
-
efficiency
- ρ :
-
air density
- ϕ :
-
non-dimensional flow rate
- ψ :
-
dimensionless head parameter
- air:
-
inlet air
- c:
-
compressor
- cool:
-
cooling
- coolant:
-
coolant
- cooler inlet:
-
cooler inlet gas
- cooler outlet:
-
cooler outlet gas
- egr:
-
exhaust gas recirculation
- exmani:
-
exhaust manifold
- i :
-
indicated
- inmani:
-
intake manifold
- max:
-
maximum
- p:
-
polytropic
- r:
-
ratio
- stoi:
-
Stoichiometric
- v :
-
volumetric
- 0:
-
inlet gas
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Chung, J.W., Kim, N.H., Kim, D.J. et al. Mean Value WGT Diesel Engine Calibration Model for Effective Simulation Research. Int.J Automot. Technol. 19, 209–220 (2018). https://doi.org/10.1007/s12239-018-0020-5
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DOI: https://doi.org/10.1007/s12239-018-0020-5