Revised Table Comparing Iranian, Russian, German, French & Japanese Submarine Diesels

Since Anonymous produced Table Comparing Russian, German, French & Japanese Submarine Diesels of March 15, 2018 Anonymous has added the Iranian Ghadir-class submarine and added and/or revised figures indicated in Blue. Some fields (like Country, Make and Type) could only fit in vertically.

Enjoy this super Table of Specifications of modern diesels for submarine

Country [14]			IR AN	RU SS IA	RU SS IA	RU SS IA	RU SS IA	GE RM AN Y	GE RM AN Y	FR AN CE	FR AN CE	JA PAN	JA PAN
Make			SAD RA /  ISO ICO	KOR AB EL	KRA BEL	U D M Z	U D M Z	MTU	MTU	MAN Diesel  & Turbo	MAN Diesel  & Turbo	K a w a s a k i	K a w a s a k i
Type			Gha dir sub [A] [15]	4-2 DL 42 M	7-2 D4 2M	DM -18 5V 12M [B] [11]	DM -18 5V 12S [B]  [12]	16V 396 SE84	12V 4000 U83	8PA4 V200 SM	12 PAV 200 SM DS	12 V25 /25 SB	12 V25 /31S
Application			Sub	Sub	Sub	Surf	Sub	Sub	Sub	Sub	Sub	Sub	Sub
Parameter	Symbol	unit
Bore	d	mm	90	300	300	185	185	165	170	200	200	250	250
Stroke	s	mm	100	380	380	215	215	185	190	210	210	250	310
Rated speed [2]	n	rpm	2000	700	750	1900	1500	1800	1800	1300	1300	1200	1200
No. of cylinder	Z	‐	6	6	6	12	12	16	12	6	12	12	12
Mechanical output	SkW	kW	110	1000	1500	2416	1933	1200	1300	700	1330	2500	3100
Cylinder capacity [4]	v	l	0.64	26.9	26.9	5.76	5.76	3.95	4.31	6.69	6.59	12.2	15.2
Net mean effective Pressure [5]	Pme	MPa	1.73	1.06	1.49	2.20	2.23	1.26	1.67	1.63	1.55	1.70	1.70
Piston speed [1]	Cm	m/s	6.7	8.9	9.5	13.6	10.8	11.1	11.4	9.1	9.1	10.0	12.4
Electrical output [6]	SE	kW	88	800	1200	1933	1546	960	1040	560	1064	2000	2480
Specific electrical output	SE*	kW/l	22.9	4.97	7.43	27.5	22.0	15.1	20.1	14.1	13.4	13.5	13.5
Output　at snorting [7]	SEsn	kW	79	720	1080	1740	1392	864	936	504	958	1800	2232

[A] Specification of diesel of Ghadir-class, Iranian midget submarine is very roughly estimated. Mechanical output of Ghadir diesel is around 100kW.

[B] Net mean effective pressure demonstrated high performance of DM-185V12. 12PAV200SMDS needs further improvement. 

[1] Piston speed = Stroke x Rated speed / 30000

[2] Based on product catalog or data from this blog.

[3] [9] page 3,” Table 1 Performance and emission targets DM-185 Engine Family”. Others are based on product catalog or data from this blog.

[4] Cylinder capacity = (Bore/2)^2 x Stroke x 3.14 / 1000

[5] Pme = (600 x SkW)/((3.141x d^2/400) x (s/1000) x n x Z / 2)                                                                                                                                                                                                   

[6] Electrical output of DM-185V12S = Electrical output of DM-185V12G x 0.8. Electrical output of DM-185V12G is in [11]. For others, Electrical output = Mechanical output x 0.8 (= power factor)

[7] Electrical output at snorting = Electrical output x 0.9 (= assumed figure based on [8]).

[8] SUBMARINE POWER AND PROPULSION: BALANCING THE ENERGY ELEMENTS, 

January 2012, page2 John Buckingham.

[9] http://souztrade.ru/dizelnye-dvigateli-dm-185/

[10] http://jxpt.whut.edu.cn:81/meol/common/script/preview/download_preview.jsp?fileid=517881&resid=63750&lid=5030

[11] Ibid, page3, [9] page 3,” Table 1 Performance and emission targets DM-185 Engine Family”.

[12] Hypothetical DM-185 diesel generator for submarine applications. All data of DM-185 12VS are estimation.

[13] Specific electrical output =Electrical output per unit capacity = Electrical output / (Cylinder capacity x No. of cylinder)

[14] IR = Iran, Ru=Russia, DE=Germany, FR=France, JP=Japan

[15] https://en.wikipedia.org/wiki/Ghadir-class_submarine Ghadir-class sub is based on the North Korean Yono class submarine (https://en.wikipedia.org/wiki/Yono-class_submarine). As there is no information on diesel of Ghadir-class, estimation of its features is based on various assumption as follows:

(1) Diameters of intake tubes are ca.20cm and 60cm for Ghadir and Soryu based on pictures, and the Diameter reflects bore size. 

(2)  Considering low vibration and size of submarine, L6 diesel is used.

(3)  Maximum rated speed is 2000rpm [16], because of long intake tube.

(4)  Volumetric efficiency is maximum at 7m/s of piston speed.

(5)  Net mean effective Pressure of modern diesel is 1.6-2.0MPa 

[17]. Assumptions (1)-(5) and try & error results in data on Ghadir diesel.

[16] http://www.geocities.jp/bequemereise/air_capacity.html

[17] https://nippon.zaidan.info/seikabutsu/2002/00198/contents/007.htm

Anonymous