This study explores the possibility of increasing the power output and improving the fuel economy of an internal combustion engine by employing a Rankine cycle driven by the engine exhaust. Engine exhaust energy is analyzed based on the brake power output and exhaust temperature of a 2.0DCVVT engine. The quantitative and qualitative analysis of exhaust energy was conducted on the basis of the first and second laws of thermodynamics. The effects on the efficiency of heat recovery of the parameters of various states of the working fluids were also studied. The results of the theoretical studies give a good indication of the overall efficiency of the Rankine cycle. In addition, an appropriate working fluid for the recovery system was also investigated and selected. Among the working fluids investigated, water shows the best work potential when water is heated over 500 °C, the total system efficiency is over 22%, and the system net work (Wnet) is above 13 kW (up to 14.5 kW), all of which can increase the petrol engine output by more than 14.5%.

1.
E.
Logwig
, “
Performance of a 35-Hp organic Rankine cycle exhaust gas powered system
,” SAE Technical Paper No. 700160,
1970
.
2.
P. S.
Patel
and
E. F.
Doyle
, “
Compounding the truck diesel engine with an organic Rankine cycle system
,” SAE Technical Paper No. 760343,
1976
.
3.
D. C.
Li
 et al, “
A new combined power and desalination system driven by low grade heat for concentrated brine
,”
Energy
46
,
582
595
(
2012
).
4.
H. G.
Zhang
,
E. H.
Wang
, and
B. Y.
Fan
, “
A performance analysis of a novel system of a dual loop bottoming Organic Rankine Cycle (ORC) with a light-duty diesel engine
,”
Appl. Energy
102
,
1504
1513
(
2013
).
5.
J.
Fu
 et al, “
An open steam power cycle used for IC engine exhaust gas energy recovery
,”
Energy
44
,
544
554
(
2012
).
6.
S. H.
Kang
, “
Design and experimental study of ORC (Organic Rankine Cycle) and radial turbine using R245fa working fluid
,”
Energy
41
,
514
524
(
2012
).
7.
Y.-M.
Kim
,
D.-G.
Shin
, and
J.-H.
Jang
, “Scroll-type expander having heating structure and scroll-type heat exchange system employing the expander,” U.S. patent 7,124 585 (24 October
2006
).
8.
H. J.
Kim
,
J. M.
Ahn
,
I.
Park
 et al, “
Scroll expander for power generation from a low-grade steam source
,”
Proc. Inst. Mech. Eng. A: J. Power Energy
221
(
5
),
705
711
(
2007
).
9.
H. G.
Zhang
,
E. H.
Wang
, and
B. Y.
Fan
, “
Heat transfer analysis of a finned-tube evaporator for engine exhaust heat recovery
,”
Energy Convers. Manage.
65
,
438
447
(
2013
).
10.
Z. Q.
Wang
,
N. J.
Zhou
,
J.
Guo
, and
X. Y.
Wang
, “
Fluid selection and parametric optimization of organic Rankine cycle using low temperature waste heat
,”
Energy
40
,
107
115
(
2012
).
11.
H.
Tian
 et al, “
Fluids and parameters optimization for the Organic Rankine Cycles (ORCs) used in exhaust heat recovery of Internal Combustion Engine (ICE)
,”
Energy
47
,
125
136
(
2012
).
12.
G.
Qiu
, “
Selection of working fluids for micro-CHP systems with ORC
,”
Renewable Energy
48
,
565
570
(
2012
).
13.
M. S.
Söylemez
, “
Optimum length of finned pipe for waste heat recovery
,”
Energy Convers. Manage.
49
(
1
),
96
100
(
2008
).
14.
B. F.
Tchanche
,
G.
Lambrinos
,
A.
Frangoudakis
, and
G.
Papadakis
, “
Exergy analysis of micro-organic Rankine power cycles for a small scale solar driven reverse osmosis desalination system
,”
Appl. Energy
87
(
4
),
1295
1306
(
2010
).
15.
M. S.
Söylemez
, “
On the thermoeconomical optimization of heat pipe heat exchanger HPHE for waste heat recovery
,”
Energy Convers. Manage.
44
(
15
),
2509
2517
(
2003
).
16.
C. J.
Leising
,
G. P.
Purohit
,
S. P.
DeGrey
, and
J. G.
Finegold
, “
Waste heat recovery in truck engines
,” SAE Technical Paper No. 780686,
1978
.
17.
E.
Doyle
,
L.
DiNanno
, and
S.
Kramer
, “
Installation of a diesel organic Rankine compound engine in a Class-8 truck for a single vehicle test
,” SAE Technical Paper No. 790646,
1979
.
18.
T.
Endo
,
S.
Kawajiri
,
Y.
Kojima
,
K.
Takahashi
,
T.
Baba
,
S.
Ibaraki
,
T.
Takahashi
, and
M.
Shinohara
, “
Study on maximizing exergy in automotive engines
,” SAE Technical Paper No. 2007-01-0257,
2007
.
19.
A.
Obieglo
,
J.
Ringler
,
M.
Seifert
, and
W.
Hall
, “
Future efficient dynamics with heat recovery
,”
paper presented at 2009 DEER Conference
.
20.
F.
Bauer
, “
BMW revives steam power to save fuel
,”
Automot. News
December 12, 2005.
21.
C. R.
Nelson
, “
In-vehicle exhaust energy recovery for thermal efficiency improvement
,” in 12th Annual Diesel Engine Emissions Reduction (DEER) Conference,
200
6.
22.
H.
Schmid
, “
Less emissions through waste heat recovery
,” paper presented at the Green Ship Technology Conference,
London
,
28-29 April 200
4.
23.
M.
Kadota
and
K.
Yamamoto
, “
Advanced transient simulation on hybrid vehicle using Rankine cycle system
,”
SAE Int. J. Engines
1
(
1
),
240
247
(
2009
).
24.
J.
Ringler
,
M.
Seifert
,
V.
Guyotot
, and
W.
Hübner
, “
Rankine cycle for waste heat recovery of IC engines
,”
SAE Int. J. Engines
2
(
1
),
67
76
(
2009
).
25.
N.
Espinosa
,
L.
Tilman
,
V.
Lemort
,
S.
Quoilin
, and
B.
Lombard
, “
Rankine cycle for waste heat recovery on commercial trucks: Approach, constraints and modelling
,” paper presented at the
Diesel International Conference and Exhibition
, France,
2010
.
26.
T.
Wang
,
Y.
Zhang
,
Z.
Peng
, and
G.
Shu
, “
A review of researches on thermal exhaust heat recovery with Rankine cycle
,”
Renewable Sustainable Energy Rev.
15
,
2862
2871
(
2011
).
27.
C.
Sprouse
 III
and
C.
Depcik
, “
Review of organic Rankine cycles for internal combustion engine exhaust waste heat recovery
,”
Appl. Therm. Eng.
51
,
711
722
(
2013
).
28.
C. O.
Katsanos
,
D. T.
Hountalas
, and
E. G.
Pariotis
, “
Thermodynamics analysis of a Rankine cycle applied on a diesel truck engine using steam and organic medium
,”
Energy Convers. Manage.
60
,
68
76
(
2012
).
29.
M.
He
,
X.
Zhang
,
K.
Zeng
, and
K.
Gao
, “
A combined thermodynamic cycle used for waste heat recovery of internal combustion engine
,”
Energy
36
,
6821
6829
(
2011
).
30.
B. F.
Tchanche
,
G. R.
Lambrinos
,
A.
Frangoudakis
, and
G.
Papadakis
, “
Low-grade heat conversion into power using organic Rankine cycles: A review of various applications
,”
Renewable Sustainable Energy Rev.
15
(
8
),
3963
3979
(
2011
).
31.
F.
Velez
,
J. J.
Segovia
,
M. C.
Martin
,
G.
Antolin
,
F.
Chejne
, and
A.
Quijano
, “
A technical, economical and market review of organic Rankine cycles for the conversion of low-grade heat for power generation
,”
Renewable Sustainable Energy Rev.
16
(
6
),
4175
4189
(
2012
).
32.
P.
Bombarda
,
C.
Invernizzi
, and
C.
Pietra
, “
Heat recovery from Diesel engines: A thermodynamic comparison between Kalina and ORC cycles
,”
Appl. Therm. Eng.
30
,
212
219
(
2010
).
33.
K. K.
Srinivasan
,
P. J.
Mago
, and
S. R.
Krishnan
, “
Analysis of exhaust waste heat recovery from a dual fuel low temperature combustion engine using an organic Rankine cycle
,”
Energy
35
(
6
),
2387
2399
(
2010
).
34.
H.
Teng
,
G.
Regner
, and
C.
Cowland
, “
Waste heat recovery of heavy-duty diesel engines by organic Rankine cycle. Part I: Hybrid energy system of diesel and Rankine engines
,” SAE Technical Paper No. 2007-01-0537,
2007
.
35.
H.
Teng
and
G.
Regner
, “
Improving fuel economy for HD diesel engines with WHR Rankine cycle driven by EGR cooler heat rejection
,” SAE Technical Paper No. 2009-01-2913,
2009
.
36.
I.
Vaja
and
A.
Gambarotta
, “
Internal combustion engine (ICE) bottoming with Organic Rankine Cycles (ORCs)
,”
Energy
35
,
1084
1093
(
2010
).
37.
M.
Bianchi
and
A. D.
Pascale
, “
Bottoming cycles for electric energy generation: Parametric investigation of available and innovative solutions for the exploitation of low and medium temperature heat sources
,”
Appl. Energy
88
(
5
),
1500
1509
(
2011
).
38.
N.
Espinosa
,
I.
Gil-Roman
,
D.
Didiot
, et al, “
Transient organic Rankine cycle modelling for waste heat recovery on a truck
,”
24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
,
2011
.
39.
G.
Yu
 et al, “
Simulation and thermodynamic analysis of a bottoming Organic Rankine Cycle (ORC) of diesel engine (DE)
,”
Energy
51
,
281
290
(
2013
).
40.
E. H.
Wang
,
H. G.
Zhang
,
B. Y.
Fan
,
M. G.
Ouyang
,
Y.
Zhao
, and
Q. H.
Mu
, “
Study of working fluid selection of Organic Rankine Cycle (ORC) for engine waste heat recovery
,”
Energy
36
,
3406
3418
(
2011
).
41.
J. P.
Roy
,
M. K.
Mishra
, and
A.
Misra
, “
Performance analysis of an organic Rankine cycle with superheating under different heat source temperature conditions
,”
Appl. Energy
88
,
2995
3004
(
2011
).
42.
S.
Quoilin
,
S.
Declaye
,
B.
Tchanche
, and
V.
Lemort
, “
Thermo-economic optimization of waste heat recovery organic Rankine cycles
,”
Appl. Therm. Eng.
31
,
2885
2893
(
2011
).
43.
D.
Gewald
,
K.
Siokos
,
S.
Karellas
, and
H.
Spliethoff
, “
Waste heat recovery from a landfill gas-fired power plant
,”
Renewable Sustainable Energy Rev.
16
,
1779
1789
(
2012
).
44.
L. B.
Zhou
,
Internal Combustion Engine Theory
(
Machine Press
,
Beijing, China
,
2005
).
45.
W. D.
Shen
,
Engineering Thermodynamics
(
High Education Press
,
Beijing, China
,
2007
).
46.
T. C.
Hung
,
T. Y.
Shai
, and
S. K.
Wang
, “
A review of Organic Rankine Cycles (ORCs) for the recovery of low-grade waste heat
,”
Energy
22
(
7
),
661
667
(
1997
).
47.
T. C.
Hung
, “
Waste heat recovery of organic Rankine cycle using dry fluids
,”
Energy Convers. Manage.
42
(
5
),
539
553
(
2001
).
48.
A.
Borsukiewicz-Gozdur
and
W.
Nowak
, “
Comparative analysis of natural and synthetic refrigerants in application to low temperature Clausius–Rankine cycle
,”
Energy
32
(
4
),
344
352
(
2007
).
49.
B. T.
Liu
,
K. H.
Chien
, and
C. C.
Wang
, “
Effect of working fluids on organic Rankine cycle for waste heat recovery
,”
Energy
29
(
8
),
1207
1217
(
2004
).
50.
U.
Drescher
and
D.
Bruggemann
, “
Fluid selection for the Organic Rankine Cycle (ORC) in biomass power and heat plants
,”
Appl. Therm. Eng.
27
,
223
228
(
2007
).
51.
V.
Maizza
and
A.
Maizza
, “
Working fluids in non-steady flows for waste energy recovery systems
,”
Appl. Therm. Eng.
16
,
579
590
(
1996
).
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