du-wingd · gg gv g" µ g ) ¾ g: gg Æ mdo % ì ¾ mdo Æ hfo 3û fþ gu g1 g gj gy µ 6õ...

DU-WinGD

IHI Co. Confidential

2018 4 13

Copyright © 2018 DIESEL UNITED,LTD. All Rights Reserved.

1. X-DF

2. (VCR)*VCR Variable Compression Ratio system



X-DF

4

mid-stroke

X-DFX-DF


CO2

SOx

NOx

X-DFTier 3

PM

LP-DF / Gas

HP-DF / Gas

Diesel / HFO

Em

issi

on V

alue

s(%

)

CO2NOx

SOxPM

NOx(Tier 3)

!

X-DFX-DF

5

X-DF

6Copyright © 2017 DIESEL UNITED,LTD. All Rights Reserved.

V0 / Vc

Vc

V0

(TDC)

Vc

V0

(TDC)

X-DFX-DF


1 2 GAV

-

X-DFX-DF


X-DFX-DF


X-DFX-DF

1 2


X-DF UNIC

CCM-20X-DF CCM20 1

LDU-20

LDU-20

LDU-20 Local Display Module

CCM20 Cylinder Control Module

MCM-11 Main Control Module

IOM-10 Input Output Module

X-DFX-DF

Copyright © 2017 DIESEL UNITED, LTD. All Rights Reserved.

W-X engine

CCM-20

CCM-20

CCM-20

X-DFX-DF

11

“iCAT”


X-DFX-DF

BNBN

X-DF iCAT

BN BN

Fuel sharing mode

iCAT:

X-DF


+

MDO 3 5 ( )MDO

MDO HFOHFO MDO

Port-to-port operationMDO

X-DFX-DF

Copyright © 2017 IHI Corporation All Rights Reserved.

ECA X-DF

14

(1)Tier

(2)

(3)NOx ACD

Auxiliary Control Device)(4)2017 6 12 ABS,

,EPA USCG ,EPA

X-DFX-DF


W6X62DF

X-DF 2 22017 8

2018 3 2 4,700

60

180k m3 LNGC twin-W6X62DF “SK Audace”

X-DFX-DF


“SK Audace”

Total R/H[hrs]

R/H aftership delivery

[hrs]

R/H afterGas loading

[hrs]

R/H Gasmode[hrs]

Gas R/H aftergas loading

[%]P1 4,703 4,417 3,959 3,899 98.5

P2 4,613 4,412 3,954 3,898 98.6

2017 2018 3

X-DFX-DF


“SK Audace”

NBOG( ) 70%

16~18

(GVU )65% 7bar

GVU9bar

17

X-DFX-DF


X-DF Fuel Sharing

18

X-DF Fuel Sharing

Fuel sharing 50% 100% (HFO) Fuel sharing mode 5% 50%

•• UNIC Fuel sharing mode• UNIC

“SK Audace”NBOG( )

“SK Audace”NBOG( )

X-DFX-DF


X-DF Fuel Sharing

19

NBOG( )

X-DFX-DF

0

10

20

30

40

50

60

70

80

90

100

15 16 17 18 19 20

Gas

cons

umpt

ion

(t/d

ay)

Ship speed (kn)

Gas consumpt ion (ME & AE) NBOG


X-DFX-DF

WinGD DF ( )(2015 12 2018 3 )

WinGD DF ( )(2015 12 2018 3 )

2017 5 WinGD 40%

2017 6 2017 9 DF 80%WinGD


LNG Carrier Productcarrier Container Tanker

RT flex50DF 1(14km3)

5(15k dwt)

6(1,400TEU)

4(Chemical tanker)

16

X52DF 4(Shuttle tanker)

4

X62DF 10(180km3)

13(Aframax tanker)

23

X72DF 42(174k, 180km3)

42

X82DF

X92DF 9(22,000TEU)

9

53 5 15 21 94

2018 394

X-DFX-DF

1. X-DF

2. (VCR)*VCR Variable Compression Ratio system



VCR

25

(Vc)

Compression Ratio

Pressure

Volu

me

Startof

Compression

TDC

VCLarge

Low Compression Ratio( )

Startof

Compression

TDC

Effe

ctiv

eSw

ept

Volu

me

(Vs)

VCSmall

High Compression Ratio( )

Effe

ctiv

eSw

ept

Volu

me

(Vs)

Vc(Large) > Vc(Small)


VCR

26

2 VCRCross-section of 2 stroke engine

Close up of crosshead


VCR

27

/


VCR

29

W6X72DF( ) 3 VCR

3 VCR

View from P Side of the Engine (#2cyl.)

A

View A

W6X72DF


VCR

30

VCR

VCR

Geo. CR = 18.0

Com

pres

sion

P

ress

ure

[bar

]

Output Power : 2.0% of MCR Speed : 34rpm

Geo. CR = 12.0

Increasingcompression ratio

Cycle [-]

0%20%

Pis

ton

Rod

Pro

ject

ion

[% o

f 100

mm

]40%60%80%

100%

100 200 0 100 2000Max

imum

Pre

ssur

e in

Bot

tom

Cha

mbe

r

Decreasingcompression ratio


DF

31

DF LNG

VCR DF

DU WinGD, IHI 3

du-wingd · gg gv g" µ g ) ¾ g: gg Æ mdo % ì ¾ mdo Æ hfo 3û fþ gu g1 g gj gy µ 6õ...

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