Động cơ tàu thủy Daihatsu tiếng anh

Động cơ tàu thủy daihatsu tiếng anh

Introduction of the new Daihatsu Diesel

Diesel engine

HOME Introduction Specification Comparison index

Principal data of DC-17 Sectional plan

Features

Benefits ISO 9001 / ISO 14001

1.Designed for easy installation and operation 2.High reliability,durability,and low running cost DSP system / Maintenance tools Major parts (with dimension) 3.Efficient combustion with smaller bore diameter CFD analysis

Low load limit with heavy fuel oil Reliability and durability of 900min-1 engine under heavy fuel operation 4.Environmental Awareness

5.Compatibility with Electronic Commerce / 6.Simple Fresh Water Cooling System 7.Integrated Engine Safety, Control, and Monitoring System (Option)

8.Electronic fuel injection device (Option)

9 Required working hours for engine maintenance / 10.Maintenance interval and parts life

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Concept

INDEX HOME Introduction Specification Comparison

Number of Cylinder

Cylinder Bore × Piston Stoke

Stroke/Bore-Ratio

Engine Speed

Piston Speed

Generator Output

Break Mean Effective Pressure

Max Combustion Pressure

Fuel Oil

Engine dry Mass

Generator Set dry Mass

(mm)

(min -1 ) (m/s) (kWe) (MPa) (MPa)

(kg) (kg)

5

440 2.09

5,600 9,930

900 8.1

1,000 9.0

6

560 2.21

6,250 11,000

900 8.1

1,000 9.0

φ 170 × 270 1.59

16

up to 700 mm 2 /s @ 50 ° C (CIMAC H55)

2

Sectional plan

Fuel injection system

Piston

Cam and camshaft

Connecting Rod

Crank shaft

Cylinder Head

Exhaust Pipe

Cylinder Liner

Frame

Main Metal / Crankpin Metal

*Special cast iron for high resistance to

heat and pressure

*Optimal swirl port

*Effective cooling of F.O injection valve

area

*Hydraulically tightened four studs

*DSP (Single pipe) system

*Optimal matching of inlet and exhaust

timing

*Passage design for maximum turbo

charger efficiency

*Special cast iron material for durability

*Use of protect ring

*Optimal cooling design

*Aluminium metal alloy for maximum

resistance to wear, corrosion, and

pressure

*High rigidity monoblock structure

*Hydraulic tightening for main bearing

holder and side bolt

*Good accessibility for inspection and

maintenance

*Frame casting with cooling water and air

passage

*L.O passage drilled into the frame

*Large diameter cams for durability against high F.O injection pressure

*Two piece unit cam

*High compression ratio (S/B =1.59) and optimal combustion chamber design

*3 rings

*Top & 2nd ring groove hardened

*Block type high-pressure pipe

*Mono-block plunger barrel

*Non-cooled fuel nozzle

*Horizontally cut 3 piece design

*Big end portion tightened hydraulically

*Manufactured by CGF method

*Dynamic analysis for optimum design

*Shaft diameter for optimum oil film thickness

*Highly balanced

1 Designed for easy installation and operation

Pipeless structure with fewer pipe connection points and concentrated auxiliary parts

3D-CAD DATA

1) Piping Reduction

*Concentration of connection

points and reduction in number

of pipes

2) Piping Structure

*No exterior piping for cooling

water and lubrication oil.

*Non-cooled F.O nozzle as

standard

*Parts number reduced by 50%

compared to conventional

engine

3) Easy Maintenance

*Inlet and exhaust piping on the

same side of the engine for

easy inspection and overhaul

of the F.O pump.

*Auxiliary parts concentrated in

one area for easy maintenance.

F.O LEAK OUTLET F.O OUTLET

F.W INLET

F.W OUTLET

F.O INLET

Introduction Specification Comparison

2 High reliability, durability, and low running cost

1) Low F.O consumption with smaller bore

(Thermal efficiency = 40%)

2) Low L.O consumption and longer cylinder

liner duration by the use of the protect ring

3) Easy assembly / disassembly procedure

*Simple design with fewer parts number

*Efficient maintenance tools

*Horizontally cut 3 piece connecting rods

4) Compact design of major and

replacement parts

Without liner protect ring

Combustion process Upward stroke

Combustion process Upward stroke

;

;

;

;

;

; Cylinder Liner Partial

Wear

Calcium Composition

Hard Composite Material (Lub oil &F.O.residue)

Lack of Piston Gap Leads

to Lub oil Scraping

Scraping-off Carbon Deposit Protect Cylinder Liner from Flame

Reduce Top-ring Temperature

Secure Piston Gap for Prevention of Lub Oil Scraping

Effect of "Liner Protect Ring"

2 High reliability, durability, and low running cost

(Cylinder head)

Maintenance tools (Main bearing holder)

Maintenance tools

(Connecting rod big end portion)

Hydraulic Jack

Hydraulic Jack Hydraulic Jack

Benefits of DSP (Daihatsu Single Pipe) system

1) Higher turbocharger efficiency

2) Simple design for easier maintenance

3) Fewer parts

Introduction Specification Comparison

Major parts (with dimension)

Piston assy Intake / Exhaust Valve Connecting rod assy

DK-20

DC-17

20.0kg

10.5kg

0.6kg

0.4kg

0.6kg

0.4kg

43.0kg

26.5kg

Ø200

Ø170

Ø56 Ø56

Ø12 Ø12

72

81

260

78

60

55

64

Features

High reliability, durability, and low running cost

3.

Combustion technology for low load / heavy fuel oil

operation with smaller bore

1) Optimum engine parameter (bore, stroke, compression ratio,

pressure ratio, inlet and exhaust valve diameter, timing, injection

system, etc.)

2) Optimal swirl combustion

3) Increase of stroke / bore ratio

4) Use of piston with high compression ratio

5) Optimal combustion pressure and injection pressure

6) Reduced mechanical loss and air flow resistance loss

7) Simple fresh water cooling system with the use of 2 stage

intercooler for different coolant temperature

Combustion chamber with high-pressure ratio

(mm)

340

320

300

280

260

240

220

200

180

160    170    180    190    200    210    220   (mm)

Bore (B)

S/B=1.6

S/B=1.5 DK-20

DC-17

Conventional Engine

DC-17 Conventional Engine

=15.0

SB3

SB1

TC1 AC1

SB2

23 MP12

MP11

3 PI1

MP2

MP5 MP6 MP7 MP8 MP9 MP10

MP3

MP4

J6 J5 J4 J3 J2 J1 MP1

1

4 5 6 7 8 9

10 11 12 13 14 15

16 17 18 19 20 21

Efficient combustion with smaller bore diameter

Pressure fluctuation analysis Analysis model diagram

Comparison of Stroke / Bore ratio Engine parameter optimisation simulation

Introduction Specification Comparison

CFD analysis of optimal swirl CFD analysis of optimal fuel injection pattern

Features

Efficient combustion with smaller bore diameter

CFD analysis of non-cooled F.O nozzle

Tornado cooling method (Patent pending)

3.

Low load limit with heavy fuel oil

Low Load Operation Limit On Heavy Fuel

Partial Load Safety

100

10

1

Fuel oil Vis <=700cSt at 50°C CCAI <=850

RUNNING HOUR (hr)

10% Load (Pme 0.23MPa)

35.5hrs

70% Load (Pme 1.7MPa) 30min Blow-off Operation

After continuous operation at 15% load, the engine must be operated at >=60% load for more than 30 min

Injection pressure 88MPa

NEW ENGINE

Injection pressure 40MPa

CONVENTIONAL

30

20

10

0

Fuel particule dimension (µm)

80

70

60

50

40

30

20

Compression Ratio

500 ° C

550 ° C

600 ° C

CONVENTIONAL ENGINE

NEW ENGINE

Efficient combustion with smaller bore diameter

Introduction Specification Comparison

Reliability and durability of 900min-1 engine under heavy fuel operation

Ship

Delivery

Operating hours of generator

Navigation Route

Fuel

Eng Model

No of Cyl

Gen rated output

Eng rated output

Pme

Average load

Item (Frictional loss per 1000hrs)

1st 1st piston ring

3rd 3rd piston ring

Cyl liner around 1st piston ring

Exh.valve (outer dia )

Exh valve guide (inner dia )

Intake valve (outer dia )

intake valve guide (inner dia )

550,000CF Reefer May, 1997 6,100hrs Japan, N.&S.America

720kW 774kW 1.86MPa 70~80%

0.0015mm 0.0025mm 0.0077mm 0.0025mm 0.0045mm 0.0015mm 0.0023mm

69,000WT Ore Carrier Feb 1994 6,500hrs Japan, Australia, SE Asia

440kW 472kW 1.42MPa 50~70%

0.0013mm 0.0023mm 0.0095mm 0.0023mm 0.0044mm 0.0014mm 0.0021mm

Before investigation

Gen efficiency;93%

Wear limit

0.3mm 0.3mm +1.0 0.3mm 0.3mm 0.3mm 0.3mm 0.3mm

The reliability and durability of the DC-17 Diesel engine is heightened by incorporating the features of the DK-20 engine with a delivery record of over 2000 engines, along with the new combustion technology for the small bore engine.

380cSt@50°C 6DK-20 6

Cylinder head combustion surface

Piston, Piston ring

Left; exhaust valve Right; inlet valve

Crank pin bearing

Features

Efficient combustion with smaller bore diameter

4 Environmental Awareness

1) NOx emission level well under the IMO NOx emission limit

2) Low CO2 emission due to low fuel consumption

3) Low noise and vibration

4) Measures taken to prevent fire accidents

By reducing fuel consumption, it has become possible to reduce the emission of CO2 from the engine

IMO NOx regulation

The graph shows the NOx emission regulation values set by IMO on September 1997.

500 5

10

15

20

h)

NOx(g/kW ・h) =17 (n<=130min -1 )

(130<n<=2000min -1 ) (n>2000min -1 )

=9.8

=45.n -0.2

IMO

DC-17

Termal efficienry(%)

680 660 640 620 600 580 560

540

40       41       42       43       44      45       46  

Converntional Engine

New Engine

Introduction Specification Comparison

5 Compatibility with Electronic Commerce

For compatibility with leading marine-web systems and e-commerce, the

engine 3D CAD data can be supplied as Marine CAD / TRIBON data

6 Simple Fresh Water Cooling System

Cooling water, L.O pipeless design

Fresh water cooling system is simplified, requiring only one inlet and outlet

piping, reducing the work necessary for installation.

For improved combustion with heavy fuel oil at low load, 2-stage

intercooler system is used.

Ø3

Ø5

5K-50 JIS

5K-15 JIS

Expansion tank

cooler Fresh water

15A

50A

100A

25A

HT CW LINE

5 1

6 4 3 2

A C B

2STAGE INTERCOOLER

AIR VENT

& WARMING

OUTLET INLET

LT CW LINE

LO COOLER

Features

7 Integrated Engine Safety, Control, and Monitoring System (Option)

Benefits

1) Engine operation control possible from the engine itself

2) LCD display for monitoring various aspects and

parameters of operation, making high level engine

control possible

3) Sensor and wiring maintenance made easy by the use

of rail units

4) Exterior wiring incorporates digital communication for

reduced wiring

5) Remote monitoring possible from exterior connection

units

Introduction Specification Comparison

8 Electronic fuel injection device (Option)

Further reduction in emission can be

achieved by the use of electronic fuel

injection device.

Injection timing and injection pattern can

be changed with the electronic fuel injection device By achieving optimal adjustment, performance can be improved.

Injection pattern

NOx (%)

Electoronic Fuel Injection

Mechanical Pump

30%

10

5

-30 -20 -10 0 10 20 30

0

-5

-10

-15

Features

9 Required working hours for engine maintenance

10 Maintenance interval and parts life

Hours Between Overhouls Expected Service Life

Fuel injection valve

Cylinder liner

Intake valve

Exhaust valve

Piston

Crank pin bearing

Main bearing

2,000 12,000 12,000 12,000 12,000 12,000 16,000

8,000 60,000 36,000 24,000 60,000 24,000 32,000

hrs

2

1

1 Hr.

1

0.5

1

0.5

Removal and assembly of cylinder head

Piston removal and assembly after cylinder head removal

Introduction Specification Comparison

1) Low fuel Consumption (by 5 to 10 % compared to conventional engines)

2) Low L.O consumption

3) Reduction of maintenance costs

4) High reliability and durability

1) Simple pipeless design with fewer parts number

2) Efficient maintenance tools

3) Horizontally cut 3 piece connecting rods

4) Compact engine with compact major parts

1) Inlet and exhaust gas piping mounted on the same side, allowing for easy maintenance of F.O pump and

surrounding area 2) Auxiliary parts located in one area for easy maintenance

3) Governor and gauge board in the same area for easy adjustment

4) By installing the engine side electronic monitoring device and safety / control device, many parameters of the

engine can be monitored allowing for high level engine control

1) Fewer connection points for piping, and connection points located in a single area, allows for easier

installation 2) By installing the engine side electronic safety, control, and monitoring system, exterior automatic control panel becomes unnecessary, and wiring for exterior control and monitoring is reduced

3) With the engine operating at 900min-1, the engine can be made compact, meaning less space is required for

installation

The industry-leading quality assurance systems of Daihatsu Diesel's

Headquarters and Moriyama Works, covering every aspect of design,

development, manufacture and off-site maintenance — the first

manufacturer in this field in Japan to be accredited for this aspect —

are certified as satisfying the requirements of ISO 9001 As a result

all engines, gas turbines and marine-use equipment of Daihatsu

Diesel are manufactured under quality assurance systems that also

meet the requirements of EN ISO 9001, JIS Z9901 and BSEN ISO

9001 The compliance audit was performed by Lloyd's Register

Quality Assurance, Ltd

ISO 9001 Accredited

Quality Accurance System Standerds of the International Organization for Standardization

Conforming Sites : Head Office·Moriyama Factory

Introduction Specification Comparison

Our factory (in Moriyama city) acquired ISO14001 certificate on Dec.2000