International Journal of Engine Research

The International Journal of Engine Research publishes only the highest quality original and review papers on experimental and analytical studies of engine technology. The journal is intended to serve as the premier source of long-term reference information about all aspects of engines and related technologies, including the latest research and developments affecting the automotive, railway, marine and aerospace industries as well as engines used for stationary power generation. Original research papers are welcomed from all prospective authors. All manuscripts are rigorously reviewed by experienced and respected referees. Original research articles are expected to be thorough and complete, and to make a novel and significant contribution to the literature. Review articles are usually invited by the Editorial Board, although unsolicited review articles may be considered at the discretion of the Reviews Editor. Research topics of interest include: -In-cylinder flow- Mixture distribution- Ignition and combustion- Exhaust emissions- Combustion and emissions chemistry- Combustion engine performance- Fuel injection systems- Fuel spray technology- Fuels and lubricants- Conventional and alternative fuels- Piston-ring lubrication- Gas exchange processes- After-treatment technology- Electronic engine controls- 0D, 1D, 3D simulations of relevant thermophysical processes- Powertrain simulation- Optimatization of engines, powertrains and aftertreatment systems- Rocket engines- Gas turbine engines- e-motors- Engines and auxiliary power units for hybrid vehicles- Stationary power generation

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Aerospace Engineering	2001	Q1
Aerospace Engineering	2002	Q1
Aerospace Engineering	2003	Q1
Aerospace Engineering	2004	Q1
Aerospace Engineering	2005	Q2
Aerospace Engineering	2006	Q1
Aerospace Engineering	2007	Q1
Aerospace Engineering	2008	Q1
Aerospace Engineering	2009	Q1
Aerospace Engineering	2010	Q1
Aerospace Engineering	2011	Q1
Aerospace Engineering	2012	Q1
Aerospace Engineering	2013	Q1
Aerospace Engineering	2014	Q1
Aerospace Engineering	2015	Q1
Aerospace Engineering	2016	Q1
Aerospace Engineering	2017	Q1
Aerospace Engineering	2018	Q1
Aerospace Engineering	2019	Q1
Aerospace Engineering	2020	Q1
Aerospace Engineering	2021	Q1
Aerospace Engineering	2022	Q1
Aerospace Engineering	2023	Q1
Automotive Engineering	2001	Q1
Automotive Engineering	2002	Q1
Automotive Engineering	2003	Q1
Automotive Engineering	2004	Q1
Automotive Engineering	2005	Q1
Automotive Engineering	2006	Q1
Automotive Engineering	2007	Q1
Automotive Engineering	2008	Q1
Automotive Engineering	2009	Q1
Automotive Engineering	2010	Q1
Automotive Engineering	2011	Q1
Automotive Engineering	2012	Q1
Automotive Engineering	2013	Q1
Automotive Engineering	2014	Q1
Automotive Engineering	2015	Q1
Automotive Engineering	2016	Q1
Automotive Engineering	2017	Q1
Automotive Engineering	2018	Q1
Automotive Engineering	2019	Q1
Automotive Engineering	2020	Q1
Automotive Engineering	2021	Q1
Automotive Engineering	2022	Q1
Automotive Engineering	2023	Q1
Mechanical Engineering	2001	Q1
Mechanical Engineering	2002	Q1
Mechanical Engineering	2003	Q1
Mechanical Engineering	2004	Q1
Mechanical Engineering	2005	Q2
Mechanical Engineering	2006	Q1
Mechanical Engineering	2007	Q1
Mechanical Engineering	2008	Q1
Mechanical Engineering	2009	Q1
Mechanical Engineering	2010	Q1
Mechanical Engineering	2011	Q1
Mechanical Engineering	2012	Q1
Mechanical Engineering	2013	Q1
Mechanical Engineering	2014	Q1
Mechanical Engineering	2015	Q1
Mechanical Engineering	2016	Q1
Mechanical Engineering	2017	Q1
Mechanical Engineering	2018	Q1
Mechanical Engineering	2019	Q1
Mechanical Engineering	2020	Q1
Mechanical Engineering	2021	Q1
Mechanical Engineering	2022	Q1
Mechanical Engineering	2023	Q1
Ocean Engineering	2001	Q1
Ocean Engineering	2002	Q1
Ocean Engineering	2003	Q1
Ocean Engineering	2004	Q1
Ocean Engineering	2005	Q1
Ocean Engineering	2006	Q1
Ocean Engineering	2007	Q1
Ocean Engineering	2008	Q1
Ocean Engineering	2009	Q1
Ocean Engineering	2010	Q1
Ocean Engineering	2011	Q1
Ocean Engineering	2012	Q1
Ocean Engineering	2013	Q1
Ocean Engineering	2014	Q1
Ocean Engineering	2015	Q1
Ocean Engineering	2016	Q1
Ocean Engineering	2017	Q1
Ocean Engineering	2018	Q1
Ocean Engineering	2019	Q1
Ocean Engineering	2020	Q1
Ocean Engineering	2021	Q1
Ocean Engineering	2022	Q1
Ocean Engineering	2023	Q2

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
2001	0.635
2002	0.803
2003	0.608
2004	0.861
2005	0.445
2006	0.846
2007	1.107
2008	1.069
2009	1.150
2010	0.915
2011	1.538
2012	0.992
2013	1.375
2014	1.644
2015	1.050
2016	0.834
2017	1.315
2018	1.280
2019	1.299
2020	0.890
2021	1.022
2022	0.764
2023	0.700

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
2000	21
2001	18
2002	19
2003	21
2004	33
2005	42
2006	34
2007	36
2008	28
2009	31
2010	38
2011	40
2012	42
2013	46
2014	75
2015	69
2016	78
2017	77
2018	79
2019	83
2020	123
2021	242
2022	132
2023	317

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	2000	0.000
Cites / Doc. (4 years)	2001	1.333
Cites / Doc. (4 years)	2002	1.103
Cites / Doc. (4 years)	2003	1.190
Cites / Doc. (4 years)	2004	1.608
Cites / Doc. (4 years)	2005	1.165
Cites / Doc. (4 years)	2006	1.235
Cites / Doc. (4 years)	2007	1.462
Cites / Doc. (4 years)	2008	1.117
Cites / Doc. (4 years)	2009	2.450
Cites / Doc. (4 years)	2010	1.767
Cites / Doc. (4 years)	2011	2.098
Cites / Doc. (4 years)	2012	1.891
Cites / Doc. (4 years)	2013	2.464
Cites / Doc. (4 years)	2014	2.560
Cites / Doc. (4 years)	2015	2.438
Cites / Doc. (4 years)	2016	2.091
Cites / Doc. (4 years)	2017	2.754
Cites / Doc. (4 years)	2018	2.495
Cites / Doc. (4 years)	2019	2.970
Cites / Doc. (4 years)	2020	2.899
Cites / Doc. (4 years)	2021	4.166
Cites / Doc. (4 years)	2022	3.245
Cites / Doc. (4 years)	2023	3.491
Cites / Doc. (3 years)	2000	0.000
Cites / Doc. (3 years)	2001	1.333
Cites / Doc. (3 years)	2002	1.103
Cites / Doc. (3 years)	2003	1.190
Cites / Doc. (3 years)	2004	1.259
Cites / Doc. (3 years)	2005	1.110
Cites / Doc. (3 years)	2006	1.052
Cites / Doc. (3 years)	2007	1.413
Cites / Doc. (3 years)	2008	1.205
Cites / Doc. (3 years)	2009	2.367
Cites / Doc. (3 years)	2010	1.463
Cites / Doc. (3 years)	2011	2.093
Cites / Doc. (3 years)	2012	1.725
Cites / Doc. (3 years)	2013	2.383
Cites / Doc. (3 years)	2014	2.672
Cites / Doc. (3 years)	2015	1.969
Cites / Doc. (3 years)	2016	2.153
Cites / Doc. (3 years)	2017	2.757
Cites / Doc. (3 years)	2018	2.719
Cites / Doc. (3 years)	2019	3.038
Cites / Doc. (3 years)	2020	2.795
Cites / Doc. (3 years)	2021	4.221
Cites / Doc. (3 years)	2022	3.395
Cites / Doc. (3 years)	2023	3.658
Cites / Doc. (2 years)	2000	0.000
Cites / Doc. (2 years)	2001	1.333
Cites / Doc. (2 years)	2002	1.103
Cites / Doc. (2 years)	2003	0.730
Cites / Doc. (2 years)	2004	1.300
Cites / Doc. (2 years)	2005	0.981
Cites / Doc. (2 years)	2006	0.933
Cites / Doc. (2 years)	2007	1.355
Cites / Doc. (2 years)	2008	1.100
Cites / Doc. (2 years)	2009	2.047
Cites / Doc. (2 years)	2010	1.542
Cites / Doc. (2 years)	2011	1.928
Cites / Doc. (2 years)	2012	1.564
Cites / Doc. (2 years)	2013	2.524
Cites / Doc. (2 years)	2014	2.057
Cites / Doc. (2 years)	2015	1.802
Cites / Doc. (2 years)	2016	1.951
Cites / Doc. (2 years)	2017	2.973
Cites / Doc. (2 years)	2018	2.594
Cites / Doc. (2 years)	2019	2.667
Cites / Doc. (2 years)	2020	2.753
Cites / Doc. (2 years)	2021	4.447
Cites / Doc. (2 years)	2022	3.534
Cites / Doc. (2 years)	2023	3.401

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	2000	0
Self Cites	2001	3
Self Cites	2002	2
Self Cites	2003	3
Self Cites	2004	8
Self Cites	2005	9
Self Cites	2006	5
Self Cites	2007	7
Self Cites	2008	11
Self Cites	2009	7
Self Cites	2010	8
Self Cites	2011	19
Self Cites	2012	8
Self Cites	2013	26
Self Cites	2014	31
Self Cites	2015	35
Self Cites	2016	50
Self Cites	2017	56
Self Cites	2018	48
Self Cites	2019	79
Self Cites	2020	182
Self Cites	2021	351
Self Cites	2022	336
Self Cites	2023	406
Total Cites	2000	0
Total Cites	2001	28
Total Cites	2002	43
Total Cites	2003	69
Total Cites	2004	73
Total Cites	2005	81
Total Cites	2006	101
Total Cites	2007	154
Total Cites	2008	135
Total Cites	2009	232
Total Cites	2010	139
Total Cites	2011	203
Total Cites	2012	188
Total Cites	2013	286
Total Cites	2014	342
Total Cites	2015	321
Total Cites	2016	409
Total Cites	2017	612
Total Cites	2018	609
Total Cites	2019	711
Total Cites	2020	668
Total Cites	2021	1203
Total Cites	2022	1521
Total Cites	2023	1818

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	2000	0
External Cites per document	2001	1.190
External Cites per document	2002	1.051
External Cites per document	2003	1.138
External Cites per document	2004	1.121
External Cites per document	2005	0.986
External Cites per document	2006	1.000
External Cites per document	2007	1.349
External Cites per document	2008	1.107
External Cites per document	2009	2.296
External Cites per document	2010	1.379
External Cites per document	2011	1.897
External Cites per document	2012	1.651
External Cites per document	2013	2.167
External Cites per document	2014	2.430
External Cites per document	2015	1.755
External Cites per document	2016	1.889
External Cites per document	2017	2.505
External Cites per document	2018	2.504
External Cites per document	2019	2.701
External Cites per document	2020	2.033
External Cites per document	2021	2.989
External Cites per document	2022	2.645
External Cites per document	2023	2.841
Cites per document	2000	0.000
Cites per document	2001	1.333
Cites per document	2002	1.103
Cites per document	2003	1.190
Cites per document	2004	1.259
Cites per document	2005	1.110
Cites per document	2006	1.052
Cites per document	2007	1.413
Cites per document	2008	1.205
Cites per document	2009	2.367
Cites per document	2010	1.463
Cites per document	2011	2.093
Cites per document	2012	1.725
Cites per document	2013	2.383
Cites per document	2014	2.672
Cites per document	2015	1.969
Cites per document	2016	2.153
Cites per document	2017	2.757
Cites per document	2018	2.719
Cites per document	2019	3.038
Cites per document	2020	2.795
Cites per document	2021	4.221
Cites per document	2022	3.395
Cites per document	2023	3.658

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
2000	4.76
2001	5.56
2002	0.00
2003	9.52
2004	6.06
2005	2.38
2006	20.59
2007	8.33
2008	3.57
2009	22.58
2010	10.53
2011	15.00
2012	16.67
2013	26.09
2014	18.67
2015	26.09
2016	17.95
2017	20.78
2018	27.85
2019	22.89
2020	31.71
2021	21.90
2022	21.97
2023	16.72

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	2000	0
Non-citable documents	2001	0
Non-citable documents	2002	0
Non-citable documents	2003	0
Non-citable documents	2004	0
Non-citable documents	2005	0
Non-citable documents	2006	3
Non-citable documents	2007	3
Non-citable documents	2008	5
Non-citable documents	2009	2
Non-citable documents	2010	4
Non-citable documents	2011	4
Non-citable documents	2012	5
Non-citable documents	2013	4
Non-citable documents	2014	3
Non-citable documents	2015	4
Non-citable documents	2016	6
Non-citable documents	2017	7
Non-citable documents	2018	7
Non-citable documents	2019	5
Non-citable documents	2020	5
Non-citable documents	2021	6
Non-citable documents	2022	5
Non-citable documents	2023	5
Citable documents	2000	0
Citable documents	2001	21
Citable documents	2002	39
Citable documents	2003	58
Citable documents	2004	58
Citable documents	2005	73
Citable documents	2006	93
Citable documents	2007	106
Citable documents	2008	107
Citable documents	2009	96
Citable documents	2010	91
Citable documents	2011	93
Citable documents	2012	104
Citable documents	2013	116
Citable documents	2014	125
Citable documents	2015	159
Citable documents	2016	184
Citable documents	2017	215
Citable documents	2018	217
Citable documents	2019	229
Citable documents	2020	234
Citable documents	2021	279
Citable documents	2022	443
Citable documents	2023	492

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	2000	0
Uncited documents	2001	8
Uncited documents	2002	18
Uncited documents	2003	27
Uncited documents	2004	26
Uncited documents	2005	44
Uncited documents	2006	40
Uncited documents	2007	41
Uncited documents	2008	51
Uncited documents	2009	33
Uncited documents	2010	40
Uncited documents	2011	30
Uncited documents	2012	44
Uncited documents	2013	34
Uncited documents	2014	38
Uncited documents	2015	57
Uncited documents	2016	50
Uncited documents	2017	65
Uncited documents	2018	61
Uncited documents	2019	55
Uncited documents	2020	47
Uncited documents	2021	37
Uncited documents	2022	62
Uncited documents	2023	72
Cited documents	2000	0
Cited documents	2001	13
Cited documents	2002	21
Cited documents	2003	31
Cited documents	2004	32
Cited documents	2005	29
Cited documents	2006	56
Cited documents	2007	68
Cited documents	2008	61
Cited documents	2009	65
Cited documents	2010	55
Cited documents	2011	67
Cited documents	2012	65
Cited documents	2013	86
Cited documents	2014	90
Cited documents	2015	106
Cited documents	2016	140
Cited documents	2017	157
Cited documents	2018	163
Cited documents	2019	179
Cited documents	2020	192
Cited documents	2021	248
Cited documents	2022	386
Cited documents	2023	425