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

Since Submarine Matters published Table Comparing Russian, German, French & Japanese Submarine Diesels, of March 15, 2018, Anonymous has done further very useful research and compiled new sets of data, figures and footnotes. These are marked in Blue with submarine diesels bolded.

Table 1 Specifications of modern diesels for submarine (as at March 20, 2018)

Country		Russia			Germany		France		Japan
Make		UDMZ [11]			MTU		MAN Diesel & Turbo		KAWASAKI
Type		DM-185 V12M [11]	DM-185 V12G [11]	DM-185 V12S [12]	16V396SE84	12V4000U83	8PA4V200SM	12PAV200SMDS	12V25/25SB	12V25/31S
Application		Surface Marine	Genera t or	Sub-marine	Sub	Sub	Sub	Sub	Sub	Sub
No. of cylinder		12	12	12	16	12	6	12	12	12
Bore	mm	185	185	185	165	170	200	200	250	250
Stroke	mm	215	215	215	185	190	210	210	250	310
Piston speed [1]	m/s	13.6	10.7	10.7	11.1	11.4	9.1	9.1	10.0	12.4
Rated speed [2]	rpm	1900	1500	1500	1800	1800	1300	1300	1200	1200
Mechanical output [3]	kW	2416	-	-	1200	1300	700	1330	2500	3100
Cylinder capacity [4]	l	5.76	5.76	5.76	3.95	4.31	6.59	6.59	12.2	15.2
Specific mechanical output[5]	kW/l	21.6	-	-	18.9	25.1	17.6	16.8	16.9	16.9
Electrical output [6]	kW	-	1907	1525	960	1040	560	1064	2000	2480
Specific electrical output per [13]	kW/l	-	27.5	22.0	15.1	20.1	14.1	13.44	13.5	13.5
Electrical output (snorting) [7]	kW	-	-	1373	864	936	504	957	1800	2232

[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] Specific mechanical output = Mechanical output per unit capacity = Mechanical output / (Cylinder capacity x No. of cylinder)

[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)

According to UDMZ and FEV GmbH [9,10], potential users of diesel engines DM-185 are i) enterprises of locomotive construction, ii) private transport operators, iii) leading industrial enterprises of various sectors of the economy, iv) shipbuilding companies, v) manufacturers of heavy quarry self-propelled machinery, and vi) manufacturers of diesel-generator stations.

Specifications of DM-185s are as follows:

MORE DETAILED DM-185 SPECIFICATIONS

• Engine type: L6 / V12 / V16 / V20

• Rated power: 750-1400 / 1500-2400 / 2600-3750 / 3200-4000 kW

• The diameter of the cylinder: 185 mm

• Piston stroke: 215 mm

• Cylinder power: up to 240 kW

• Cylinder capacity: 5.776 liters

• Piston speed: 13.6 m /s

• Rated speed: 1500, 1800, 1900 rpm

• Common Rail fuel equipment and the possibility of installing individual fuel injection pumps

• Specific fuel consumption: not more than 200 g / (kWh)

• Specific oil consumption: not more than 0.4 g / (kWh)

• Emissions of harmful substances: EU IIIA; IMO2 (+); Tier 3

• NOx emissions: no more than 7.2; 8.4; 6.4 g / kW * h

• Emissions of particulate matter: not more than 0.2 g / kW * h

• Warranty period: 1-3 years

• Service life: 25-30 years

DIESELS USED IN KILO SUBMARINES

Two 4-2DL42M diesels are used for Kilo submarines Project 636.1  They are L6 type diesels with 300mm of bore and 360mm of stroke. Using PG-142 generators they generate 1000kW of electrical output at 700 rpm. For sources see Revised Table footnotes 3, 4, 5 above.

Two 7-2D42M diesels are used for Kilo submarines Project 636.3, They are L6 type diesels with 300mm of bore and 360mm of stroke. Using PG-167 generators they generate 1500kW of electrical output at 750 rpm. For sources see Revised Table footnotes 3, 4, 5 above.

ANONYMOUS'S COMMENT

As latest diesel, common rail fuel injection system, whose evaluation is yet established, is adopted for DM-185 and 12V4000 U83E. Output of DM-185 is not bad, but evaluation of vibration is not reported. If DM-185 shows good anti-vibration performance, it is very strong competitor of Germany or French diesels. Electrical output of DM-185 for submarine is 40-50% higher than those of German and French counterparts.

PETE COMMENT 

As indicated on the Table, Japanese Kawasaki diesels have, by far, the highest mechanical and electrical outputs. An arrangement of four of these Kawasaki diesels would be more suitable for Australia's Future Submarine (SEA 1000) than a problematic six to eight lower powered MTU or MAN diesels.

Anonymous