Piston internal combustion engines remain in demand as energy converters for many industries. The improvement of gas exchange processes through the modernization of the exhaust system design is an effective way to improve the performance of a piston engine. The article shows a comparison of gas dynamic and heat exchange characteristics of stationary flows in the exhaust system with profiled channels in the form of a circle, square and triangle. The study was carried out using mathematical modeling and experiments. The statement of the problem, the description of the mathematical model, the composition of the experimental stand, measuring instruments and scientific methods are presented in the article. It is shown that the transverse profiling of channels in the exhaust system has a significant effect on the gas dynamics and heat transfer of stationary air flows. Experiments have shown that the use of profiled channels in the exhaust system reduces the intensity of turbulence by up to 25% and suppresses heat transfer by 10-21% compared to the basic configuration. It is shown that there is a qualitative agreement between the results of mathematical modeling and experimental studies. The obtained data on gas dynamics and heat exchange of flows in the exhaust system are necessary to refine mathematical models and engineering calculations, as well as to find ways to modernize the gas exchange systems of existing and advanced engines.

1.
J.
Ghojel
,
Fundamentals of Heat Engines (Reciprocating and Gas Turbine Internal Combustion Engines)
. (
Wiley-ASME Press Series
,
USA
,
2020
).
2.
R.
Stone
,
Heat Transfer in Internal Combustion Engines
(
Palgrave
,
London
,
1992
).
3.
C.
Iacovano
,
A.
d’Adamo
,
S.
Fontanesi
,
G. D.
Ilio
and
V. K.
Krastev
,
Application of a zonal hybrid URANS/LES turbulence model to high and low resolution grids for engine simulation
,
Int. J. Engine Research
,
22
(
8
),
2745
2764
(
2019
).
4.
S.
Buhl
,
D.
Hain
,
F.
Hartmann
and
C.
Hasse
,
A comparative study of intake and exhaust port modeling strategies for scale-resolving engine simulations
,
Int. J. Engine Research
,
19
(
3
),
282
292
(
2018
).
5.
C.
Rota
,
R. E.
Morgan
,
K.
Mustafa
,
R.
Osborne
and
A.
Matrisciano
,
A process for an efficient heat release prediction at the concepts screening stage of gasoline engine development
,
Int. J. Engine Research.
,
22
(
8
),
2502
2520
(
2021
).
6.
A. C.
Ravindran
,
S. L.
Kokjohn
and
B.
Petersen
,
Improving computational fluid dynamics modeling of Direct Injection Spark Ignition cold-start
,
Int. J. Engine Research
,
22
(
9
),
2786
2802
(
2021
).
7.
T. J.
Wang
,
Optimum design for intake and exhaust system of a heavy-duty diesel engine by using DFSS methodology
,
J. Mechanical Science and Technology
,
32
(
7
),
3465
3472
(
2018
).
8.
F.
Rulli
,
A.
Barbato
,
S.
Fontanesi
and
A.
d’Adamo
,
Large eddy simulation analysis of the turbulent flow in an optically accessible internal combustion engine using the overset mesh technique
,
Int. J. Engine Research.
,
22
(
5
),
1440
1456
(
2021
).
9.
M.
Simonetti
,
C.
Caillol
,
P.
Higelin
,
C.
Dumand
and
E.
Revol
,
Experimental investigation and 1D analytical approach on convective heat transfers in engine exhaust-type turbulent pulsating flows
,
Applied Thermal Engineering
,
165
,
114548
(
2020
).
10.
M.
Cerdoun
,
S.
Khalfallah
,
A.
Beniaiche
and
C.
Carcasci
,
Investigations on the heat transfer within intake and exhaust valves at various engine speeds
,
Int. J. Heat and Mass Transfer
,
147
,
119005
(
2020
).
11.
M. W.
Bae
,
Y. J.
Ku
and
H. S.
Park
,
A Study on Effects of Tuning Intake and Exhaust Systems Upon Exhaust Emissions in A Driving Car of Gasoline Engine
,
Transactions of the Korean Society of Mechanical Engineers B
,
43
(
5
),
379
388
(
2019
).
12.
F. J.
Arnau
,
J.
Martin
,
B.
Pla
and
A.
Aunon
,
Diesel engine optimization and exhaust thermal management by means of variable valve train strategies
,
Int. J. Engine Research.
,
22
(
4
),
1196
1213
(
2021
).
13.
J.
Jang
,
Y.
Woo
,
Y.
Jung
,
C.
Cho
,
G.
Kim
,
Y.
Pyo
,
M.
Han
and
S.
Lee
,
Research for intake and exhaust system parameterization of 2-cylinder gasoline engine for RE-EV
,
Int. J. Energy Research
,
42
(
13
),
4256
4256
(
2018
).
14.
C.-C.
Ma
,
L.-W.
Sun
,
N.
Fang
and
H.
Zhang
,
Effects of the Exhaust System on the Performance of a Turbocharged Diesel Engine
,
Transaction of Beijing Institute of Technology
,
37
(
9
),
919
925
(
2017
).
15.
M.
Kumar
,
S.
Moeeni
,
T.
Kuboyama
and
Y.
Moriyoshi
,
Performance improvement of turbocharged SI engine by post oxidation enhancement in exhaust gas in-homogeneity
,
Int. J. Engine Research
,
22
(
9
),
2931
2944
(
2021
).
16.
L. V.
Plotnikov
,
Experimental research into the methods for controlling the thermal-mechanical characteristics of pulsating gas flows in the intake system of a turbocharged engine model
,
Int. J. Engine Research
,
23
(
2
),
334
344
(
2022
).
17.
C. I.
Leahu
,
Improvement of exhaust gas pressure’s utilization for compressing the intake air in diesel engine’s cylinders
,
Int. J. Automotive Technology
,
16
(
6
),
913
921
(
2015
).
18.
L. V.
Plotnikov
,
Unsteady gas dynamics and local heat transfer of pulsating flows in profiled channels mainly to the intake system of a reciprocating engine
,
Int. J. Heat and Mass Transfer
,
195
,
123144
(
2022
).
19.
L. V.
Plotnikov
,
B. P.
Zhilkin
and
Y. M.
Brodov
,
The influence of cross-profiling of inlet and exhaust pipes on the gas exchange processes in piston engines
,
Procedia Engineering
,
150
,
111
116
(
2016
).
This content is only available via PDF.
You do not currently have access to this content.