Marine Main Engine

(1)

MAN B&W Diesel A/S

The Electronically Controlled

ME Engine

The Electronically Controlled

ME Engine

(2)

Software audit

Approval test of

Electronic Control System

Approval test of

Electronic Control System

Quay trial

Quay trial Sea trialSea trial

Development History Development History 2002.05.24 (2440/PCS) Inspection Inspection 8020 hours 8020 hours

(3)

ME Engine Programme

(4)

MC versus ME Engine

plus the ME Engine Control System

2002.05.24 (2440/PCS)

MC Engine

(5)

The difference

(6)

Removed

Removed from from the the MCMC

2002.05.24 (2440/PCS)

Chain drive for camshaft

Camshaft with fuel cams and exhaust cams

Fuel pump actuating gear

Conventional fuel injection pumps

Exhaust valve actuating gear and roller guides

Engine driven starting air distributor

Electronic governor with actuator

Regulating shaft

Engine-side control console

Mechanical cylinder lubricators

(7)

2002.05.24 (2440/PCS)

Hydraulic power supply unit

Hydraulic cylinder unit

Electronically controlled starting air valves

Integrated electronic control of auxiliary blowers

Integrated electronic governor functions

Crankshaft position sensing and tacho system

Electronically controlled Alpha Lubricators

Local Operating Panel

Added

Added to to make it make it an MEan ME

Engine Control System

(8)

ME-C Engines

Reduction of weight for ME-C compared to MC-C 6S70MC-C: 555 ton

Calculated reduction 25 ton 6S70ME-C: 530 ton

(9)

Mechanical

Mechanical –– Hydraulic System Hydraulic System

Hydraulic Power Supply Hydraulic Power Supply Hydraulic Cylinder Unit Hydraulic Cylinder Unit

(10)

Mechanical

Hydraulic Power Supply Hydraulic Power Supply Hydraulic Cylinder Unit Hydraulic Cylinder Unit

Filter

Electrically driven pumps

Safety and accumulator block

Engine driven pumps

(11)

(2440/PCS)

Mechanical

Mechanical –– Hydraulic Hydraulic SystemSystem Hydraulic

(12)

Hydraulic Power Supply

Hydraulic Power Supply (HPS) (HPS)

MC

ME

2002.05.24 (2440/PCS)

4T50ME-X; Pumps at fore end

Pumps and pump gear drive

7S50ME-C

(13)

ME-C Engines

Hydraulic Oil Loop

L/73273-7.0/0902 (2600 /RØL)

200 bar Fuel oil pump

Cyl. 1 Cyl. 2 Cyl. 3

ELVA

Cyl. 5 Cyl. 6

Exhaust valve actuator

Hydraulic cylinder unit Cyl. 4 Alpha lubricator ELFI Return to sump Main lube pump

Fine aut. filter

Engine driven hydraulic pumps

Safety and accumulator blok Fine aut. filter

EL. driven hydraulic pumps Fuel 10 bar From sump Piston cooling + bearings CCU

(14)

7S50ME-C Engine Outline

(15)

S50ME-C Overview

Port side

Starboard side

Location of gearbox for the 3 hydraulic pumps.

(16)

S50ME-C Main inner parts

• Output wheel……….. • Intermediate wheel………… • Connected wheels…………. • Gearwheel on crankshaft….

– Double row of teeth

• Removable distance piece………

• Total ratio: 12:1

(17)

(2600/KNB)

Two-Stroke Medium Bore

(18)

(2600/KNB) Filter station Step-up Gear Hydraulic pumps 2. Order Moment Compensator shaft Tightening of Guideway arrangement

(19)

Chain wheel

Studs for hydraulic tightening

Balancer weigths

(2600/KNB)

Guideway Arrangement

(20)

100 90 80 70 60 50 40 30 20 10

Engine driven pump _{Example: 7S50ME-C with 3 engine driven pumps} 110

1 cylinder cut

2 cylinders cut With cylinder cut-outs: % 56% 100 100 22 57 110 54% 56% 54% Number of pumps in use. Hydraulic pump index.

Available Engine Power on

the Propeller Curve

the Propeller Curve: 7S50ME-C: 7S50ME-C

56% 54% X% 83% 83% 81% 81% 100% 100% 100% 0 (2440/PCS)

(21)

100 90 80 70 60 50 40 30 20 10

Engine driven pump _{Example: 12K98ME-C with 4 engine driven pumps} 110

1 cylinder cut

2 cylinders cut With cylinder cut-outs: % 66% 100 100 12 25 45 110 63% 66% 100% 63% 100% Number of pumps in use. Hydraulic pump index.

Available Engine Power on

the Propeller Curve

the Propeller Curve: 12K98ME-C: 12K98ME-C

66% 63% X% 99% 99% 100% 95% 95% 100% 100% 100% 100% 100% 100% 100% (2440/PCS)

(22)

Mechanical

Hydraulic Power Supply Hydraulic Power Supply Hydraulic Cylinder Unit Hydraulic Cylinder Unit Fuel pump Fuel pump ELFI valve ELFI valve Distributor block Distributor block

Exhaust valve actuator

ELVA valve

(23)

Mechanical

Hydraulic Cylinder Unit Hydraulic Cylinder Unit

Fuel pump Fuel pump ELFI valve ELFI valve Distributor block Distributor block

Exhaust valve actuator

ELVA valve

(24)

Fuel injection

Fuel injection Valve actuationValve actuation

Accumulator Distribution Block Fuel Pump

ELFI Proportional Valve

ELVA On/Off Valve Exhaust Valve

Actuator

Hydraulic

Hydraulic Cylinder Unit (HCU)Cylinder Unit (HCU)

(25)

Two-Stroke Medium Bore ME – Engine, Design Concept

2600/KNB August 2002.

Fuel Pump – S60ME-C.

Topcover

Plunger

Position sensor (1 per pump)

Umbrella

Main Hydraulic Piston

(26)

Two-Stroke Medium Bore ME – Engine, Design Concept

2600/KNB August 2002. Exhaust Actuator S60ME-C. Top cover Minimesh Actuator house Drain hole Actuator Piston Exhaust Valve Actuator Piston Main hydraulic 1. Step 2.Step

(27)

Sealing oil control unit

Inductive sensor

(28)

Self-adjusting Damper piston Hydraulic nut/ measuring cone Sealing oil control unit

Contactless sensor with integrated electronics

Damper Bushing with new

sealing system W-seat Standard: SNCrW rolled seat Option: Nimonic 80A

(29)

S50ME-C cylinder frame

Camshaft housing closed by casting – used as drain compartment.

Intermediate piece with aft-most pair of staybolts.

(30)

(31)

Hydraulic Cylinder Unit (complete) Hydraulic Cylinder Units mounted on common base plate.

(32)

Hydraulic Exhaust Actuator (ELVA)

• Hydraulic exhaust actuator is handled as one unit.

• Easy mounting/dismounting on hydraulic cylinder unit.

• Sealings in accordance with Solas classification rules.

(33)

(2600/KNB)

”Common Beam” for mounting of HCU for 6S70ME-C.

The Beam is to mounted on top of extended brackets for ordinary gallery for 6S70MC-C.

Face for HCU.

(34)

(2600/KNB)

(35)

(2600/KNB)

(36)

(2600/KNB)

Fuel Pump Topcover Fuel pump Housing ElFI Valve

”Common” Oil supply for HCU from HPS (Double Wall Pipe) Drain oil Collector is common for the entire row of HCU.

Drain pipe from

collector to crankcase or lub. oil tank

HCU for S70ME-C

mounted on ”Common Beam” (seen from

Fore).

(37)

(2600/KNB)

Hydraulic Cylinder Units for a 6S70ME-C. Two-Stroke Medium Bore

(38)

(2440/PCS)

Mechanical

Mechanical –– Hydraulic Hydraulic SystemSystem Hydraulic

(39)

(2440/PCS)

Bridge

Engine Control Room

Engine Room/On Engine

(40)

(2440/PCS)

Bridge

Controller Main Operating

Panel

Control Network

(41)

Control Network

Bridge

(2440/PCS) Controller Main Operating Panel Control Network

(42)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Cylinders Engine Interface Control Network

(43)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Cylinders Engine Interface Engine Controller Controller Interface Control Network

(44)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Cylinders Engine Interface Engine Controller Controller Interface Control Network

(45)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Engine Interface Engine Controller Controller Interface Cylinders Control Network

(46)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Engine Interface Engine Controller Controller Interface Cylinders PC Control Room Panel

BACK-UP FOR MOP

Control Network

(47)

(2440/PCS)

Bridge

Controller Controller Controller Controller Main Operating Panel Auxiliaries Engine Interface Engine Controller Controller Interface Cylinders PC Control Room Panel

BACK-UP FOR MOP Bridge

Panel

Control Network

(48)

(2440/PCS)

Bridge

Main Operating

Panel PC

Control Room Panel

Panel

ACU CCU

ECU A EICU A

Engine Control Unit A and B Engine Interface Control Unit A and B

ECU B

Cylinders Control Unit 1 per cylinder

EICU B

Auxiliaries Control Unit 1, 2 and 3

Control Network

(49)

(2440/PCS)

Bridge

Panel PC

Panel

ACU CCU

ECU A EICU A

Auxiliaries Control Unit 1, 2 and 3

Engine Interface Control Unit A and B

ECU B

Cylinders Control Unit 1 per cylinder

EICU B

Engine Control Unit A and B

Local Operation

Panel

Control Network

(50)

Engine Control

Engine Control System System

Bridge

Panel PC

BACK-UP FOR MOP Bridge Panel Local Operation Panel Control Network (2440/PCS) MPC MPC MPCMPC MPC MPC MPCMPC MPC MPC MPCMPC

Multi-Multi-Purpose ControllerPurpose Controller

LOP

(51)

(2440/PCS)

Configuration of Control

(52)

Combustion pressure sensor

Hydraulic Cylinder Unit External sensor

Indicator valve (sketch) Internal sensor with

(53)

Combustion pressure sensor

• Pretension parts

• Pressure sensor • Holder for sensor

(54)

Basic Electronic System

Basic Electronic System (BES) (BES)

2002.05.24 (2440/PCS)

The aim has been to have a general platform and The aim has been to have a general platform and

framework of validated and well-proven hardware and framework of validated and well-proven hardware and software components allowing for application

software components allowing for application oriented development.

oriented development.

The system should cater for, the development of, a The system should cater for, the development of, a number of more or less well-defined applications number of more or less well-defined applications over the coming years.

over the coming years.

Systems should be built using a minimum number of Systems should be built using a minimum number of identical BES hardware components as building

identical BES hardware components as building blocks.

(55)

Hardware

2002.05.24 (2440/PCS)

The

The hardware hardware of the Basic Electronic of the Basic Electronic SystemSystem

currently consists of three main components

currently consists of three main components::

•

• The The Multi-Multi-Purpose ControllerPurpose Controller

•

• The Main The Main Operating PanelOperating Panel

•

• The Control The Control Network.Network.

Four secondary Basic Electronic

Four secondary Basic Electronic System hardwareSystem hardware components are also available

components are also available::

•

• Control Control Network Network converterconverter//repeaterrepeater/isolator//isolator/hubhub

•

• TachoTacho Signal Signal AmplifierAmplifier

•

• Amplifier Amplifier for ELFI for ELFI valvevalve

•

(56)

(2440/PCS)

Multi-Purpose Controller Mk 2

(57)

(2440/PCS) Multi-Purpose Controllers Multi-Purpose Controllers Mk I and Mk II Mk I and Mk II Mk Mk II II Mk Mk I I

(58)

Multi-Purpose Controller Complex Controller Input Output Net w or k A B Tach o (0)4-2 0mA +/-1 0V Pote ntio mete r PT10 0 Cont acts (0)4-2 0mA +/-1 0V X V X Other Computer Equipment Power A B Service Channel Serial Communication Power Multi-Purpose Controller (2440/PCS)

(59)

Multi-Purpose Controller Software

(2440/PCS) Ne two rk A B X V X Other Computer Equipment Power A B Power Service Terminal Sensor-Actuator API Control Network protocole (Services) Application Functionality Serial Protocole System Clock Alarm handling Parameter handling Variabel handling Multi-Purpose Controller Variable handling protocol

(60)

Main Operating Panel

(61)

Main Operating Panel Software

(2440/PCS)

Network

A B

Main Operating Panel

Control Network protocole (services) Alarm Handling - Alarm list - Event list - Cut-out lists Detailed alarm info Graphic Application Pictures Parameter back-up Application SW back-up Load of Complex Controllers Input / output

check and test SW configuration display protocol Multi-Purpose Controller Load of

(62)

Local Operating Panel (LOP)

(63)

7S50ME-C Engine Control Box

(64)

7S50ME-C Engine Control Box

(65)

Cylinder pr essur e Cylinder pr essur e Fuel pump pr essur e Fuel pump pr essur e Exhaust valve ar ea Exhaust valve ar ea Scavenging por t ar ea Scavenging por t ar ea Start injection Start injection Length injection Length injection Stop

Stop injection injection

Shape of injection

Start opening exhaust valve

Closing exhaust valve

Length of open exhaust valve

Process Flexibility

(66)

Test rig

Test rig measurementsmeasurements showing four showing four possibilities of fuel possibilities of fuel injection pattern. injection pattern.

Each example shows

fuel injection pressure

at the fuel valve and

the

the corresponding fuelcorresponding fuel valve spindle lift curve

valve spindle lift curve..

1: Typical Pump Injection

2: Typical Common Rail

3: Special 3: Special 4: Special 4: Special Injection Shaping 1 3 4 2 2002.05.05 (2440/PCS)

(67)

Bar abs

Engine load %

ME MC

Fuel Injection Pressure

Fuel Injection Pressure –– ME versus MC ME versus MC

(68)

Fuel Injection Pressure

(69)

Flexibility of the ME Concept L/74336-7.0/0502 (2430/NK) ME-C MC-C 130 50 70 90 110 30 -5 -4-3 -2 -1 0 1 2 3 4 56 140 130 120 100 90 80 70 60 50 40 110 Engine load in % Change NO_x in % g/kWh ∆SFOC NO_x

(70)

Odfjell

Odfjell - - M/T M/T ””Bow CecilBow Cecil”” 37

37,,000 000 dwtdwt Chemical Carrier Chemical Carrier

2002.07.01 (2440/PCS)

Total

-Total - 2002.07.01 - 80202002.07.01 - 8020 hourshours

with electronically controlled engine

Confirmation Test aboard Bow Cecil

Main Engine: 6L60MC “6L60ME”

Confirmation Test

(71)

Standard

fuel

fuel pump pump ME

ME fuel fuel pumppump

M/T

M/T Bow Bow Cecil: Cecil: Hydraulic Hydraulic Cylinder UnitCylinder Unit

(72)

Arrangement

Arrangement of HCUof HCU’s ’s forfor the

the ELFI and ELVA System ELFI and ELVA System Arrangement of HPS

Arrangement of HPS atat the fore end

the fore end of the engineof the engine

6L60MC/ME - M/T

(73)

6L60MC/ME cam engine

6L60MC/ME cam engine 6L60MC/ME cam-less engine_{6L60MC/ME cam-less engine}

Engine Room of

(74)

Before rebuilding Before rebuilding

Turning wheel

Semicircular wheel – marking precisely half the circumference

Tacho gearwheel – 360 teeth

Tacho sensors

Tacho

(75)

After

After rebuilding rebuilding

Tacho

(76)

Engine Room of

Engine Room of M/T M/T ””Bow Bow CecilCecil””

(77)

Fuel Pump

Exhaust Valve Actuator

Accumulators

ELVA On/Off Valve ELFI Proportional Valve

Hydraulic

Hydraulic Cylinder Unit (HCU)Cylinder Unit (HCU)

Inspection o

Inspection onboardnboard Bow Cecil a

Bow Cecil after 4137fter 4137 running hours as

running hours as

ME engine

(78)

Inspection onboard

Bow Cecil after 4137

ME engine

(79)

Inspection on

Inspection onboardboard Bow Cecil after 4137

ME engine

(80)

ME engine

Fuel Pump Plunger and

Actuator Piston

(81)

ME engine

Fuel

Fuel Pump Pump –– Actuator Actuator PistonPiston

(82)

running hours as running hours as ME engine ME engine Pitting Distribution

(83)

ME engine

ELFI and ELVA

(84)

Multi-Purpose Controller - ECU

2002.05.24 (2440/PCS)

Inspection onb

Inspection onboardoard Bow Cecil afte

Bow Cecil afterr41374137 running hours

running hours asas ME engine

(85)

Main Operating Panel - HMI

Interview with the daily operators finger touch to trackball

-Interview with the daily operators finger touch to trackball

-Main

Main Operating Panel in ECR - HMI Operating Panel in ECR - HMI

2002.05.24 (2440/PCS)

ME engine

(86)

•

• Tacho Tacho system, mechanical: system, mechanical: More rigid suspension of theMore rigid suspension of the sensors

sensors aas well as relocation s well as relocation of of same same for better for better accesacces forfor

adjustmentsadjustments of the sensorsof the sensors introducedintroduced..

•

• TachoTacho system, software: at second failure of a system, software: at second failure of a tachotacho set, shift set, shift of

of tachotacho set was not always performed. Software bug in the set was not always performed. Software bug in the low level failure-handling algorithm found and corrected.

low level failure-handling algorithm found and corrected.

•

• A A small small number of bad electrical connections resulting innumber of bad electrical connections resulting in various alarms has occurred. At all instances the

various alarms has occurred. At all instances the redundanciesredundancies

in the system has secured the engine availability. in the system has secured the engine availability.

•

• CCU changed by the crew while engine was still running CCU changed by the crew while engine was still running..

•

• EL ELFIFI valve changed valve changed..

•

• Tacho Tacho sensor drowned by salt water. sensor drowned by salt water.

Service

Service ExperienceExperience

2002.05.05 (2440/PCS)

•

• After 4000 hours in service all moving mechanical parts in the After 4000 hours in service all moving mechanical parts in the hydraulic system showed excellent surfaces.

hydraulic system showed excellent surfaces.

•

• After 4000 hours in service two places with pitting was found on After 4000 hours in service two places with pitting was found on top of the distribution block below the fuel pump actuator piston

top of the distribution block below the fuel pump actuator piston

house. This design will be modified.

(87)

Rotating Force Compensator

RotComp

ME Compensators Concept

2002.05.24 (2440/PCS)

Linear Force Compensator

LinComp

(88)

Prototype and

Prototype and Model of Model of RotCompRotComp

(89)

Alpha Lubricator System L/74177-3.0/0402 (2200/OZS) Multi Purpose Controller Hydraulic cylinder unit Cylinder oil service tank

Lube oil pipes Electrical connections Multi Purpose Controller Hydraulic cylinder unit Cylinder liner Cylinder liner Lubr ic at or Lubr ic at or 200 bar system oil To other cylinders Solenoid valve Feedback sensor Feedback sensor Solenoid valve Feedback sensor Lubr ic at or Lubr ic at or

(90)

(2600/KNB)

(91)

1 * 7S50ME-C Odfjell 37.000 dwt Chemical Carrier Alpha Diesel 2 + 2 * 7S60ME-C Stena 316.000 dwt Crud Oil Tanker HHI

2 * 6S60ME-C Viken Aframax Tanker HSD 2 + (1) * 6S70ME-C Viken 150.000 dwt Suezmax Tanker HSD

Orders

2 + 2 * 5S80ME-C Stena Tanker HHI 6S70ME-C Stena Tanker HHI

2 * 7K98ME-C* Wulff Container HSD/Gdynia 2 * 6S50ME-C ? P.C. Hitachi

Projects

1 * 7S60ME-C* Norgas Carriers Tanker Kina/Korea 1 * 5S60ME-C* Andromeda Tanker Korea

Total 9 + (1) covering ME engine bore range from 50 to 70 bore

1 * 6S70ME-C* ALPHA Tanker Tanker Korea 6S60ME-C Japan 7S50ME-C Japan

Orders and Projects for ME Engines

(92)

MAN B&W Diesel A/S

(93)

fuel injection characteristics can be optimised at a large number of loadfuel injection characteristics can be optimised at a large number of load

conditions conditions

Reduced fuel consumption:

constant constant pp_max_max in the upper load range can be achieved by a combination of fuelin the upper load range can be achieved by a combination of fuel injection timing and variation of the compression ratio (the latter by variation of the

injection timing and variation of the compression ratio (the latter by variation of the

closing of the exhaust valve). Due to this, the max. pressure can be kept constant

over a wider load range without overloading the engine, leading to SFOC

reductions at part load

on-line monitoring of the cylinder process on-line monitoring of the cylinder process can can ensures that the load distributionensures that the load distribution among the cylinders and the individual cylinder

among the cylinders and the individual cylinder’’s firing pressure can be kept up tos firing pressure can be kept up to ‘

‘as newas new’’ standard, maintaining the standard, maintaining the ‘‘as newas new’’ performance over the lifetime of the performance over the lifetime of the engine

engine

1 of 3

the enginethe engine’’s crash stop and reverse running performance can be improveds crash stop and reverse running performance can be improved

because the timing of exhaust valves and fuel injection can be optimal for these

situations too

Operational safety and flexibility:

‘‘engine brakingengine braking’’ may be obtained, reducing the stopping distance of the vessel may be obtained, reducing the stopping distance of the vessel

Advantages of the ME Engine

(94)

faster acceleration of the engine because the scavenge air pressure can befaster acceleration of the engine because the scavenge air pressure can be increased faster than normal by opening the exhaust valve earlier during

increased faster than normal by opening the exhaust valve earlier during

acceleration

dead slow running, slow steaming, is improved significantly: the minimum RPM isdead slow running, slow steaming, is improved significantly: the minimum RPM is significantly lower than for a conventional engine, dead slow running is much more

significantly lower than for a conventional engine, dead slow running is much more

regular and combustion is improved due to the electronic control of fuel injection.

Minimum RPM of 12 rpm has been measured for a 6L60MC engine in service

the engine control system includes our on-line OPS-feature: Overload Protectionthe engine control system includes our on-line OPS-feature: Overload Protection System, which ensures that the engine complies with the load-diagram and is not

System, which ensures that the engine complies with the load-diagram and is not

overloaded (as is often seen in shallow waters and with

overloaded (as is often seen in shallow waters and with ‘‘heavy propellerheavy propeller’’ operation)

operation)

Operational safety and flexibility - continued:

2 of 3

(95)

the engine can change over to different the engine can change over to different ‘‘low emission modeslow emission modes’’ where its where its NONO_x_x exhaust emission can be reduced below the IMO limits if desirable due to

exhaust emission can be reduced below the IMO limits if desirable due to ‘‘locallocal’’ emission regulations. Thus the vessels may sail with lower exhaust gas emission

emission regulations. Thus the vessels may sail with lower exhaust gas emission

within the

within the ‘‘special areasspecial areas’’ where this may be required (or be feasible due to special where this may be required (or be feasible due to special harbour fee schemes) without having negative effects on SFOC outside such

harbour fee schemes) without having negative effects on SFOC outside such

special areas

Flexibility regarding exhaust gas emissions:

mode for smokeless slow steaming can be made availablemode for smokeless slow steaming can be made available

adaptation to different fuelsadaptation to different fuels

Others:

less weight: approximate 3 tons per cylinder for a 60-bore engineless weight: approximate 3 tons per cylinder for a 60-bore engine

adaptation to different operation modeadaptation to different operation mode

computer controlled cylinder lubricator with intermittent lubrication, enables acomputer controlled cylinder lubricator with intermittent lubrication, enables a reduction in lube oil dosage.

reduction in lube oil dosage.

3 of 3

(96)

(97)

(98)

(99)

(100)

7S50ME-C High Pressure Pipe

L/73145-6.0/0802 (2220/TOV)

High Pressure pipe from accumulator block to hydraulic cylinder units.

(101)

S50ME-C Main outer parts

• Gearbox……….

• Hydraulic pumps……….. • Inspection covers………. • Base between gearbox and

bedplate……….

(102)

Hydraulic Cylinder Unit

Hydraulic Exhaust Actuator (ELVA) Cover for return oil pipe Return oil stand pipe ELFI valve ELVA valve Plug valve

(103)

Hydraulic Cylinder Unit

Fuel Pump (ELFI) Connecting flange

(104)

(2600/KNB)

(105)

(2600/KNB)

Hydraulic Power Supply with integrated 2. Order Momment Compensator.

Chaindrive from Crankshaft to step-up gear.

Chaindrive is adjusted by means of a guideway arrangement.

The guideway arrangement as well as the tensioning of the chain is carried-out by means of hydraulic jacks.

(106)

(2600/KNB)

Accumulator bloc Filter station

Main pipe for lub. oil Hydraulic pumps Step-up gear

2. Order Moment Compensator shaft Tightening of Guideway arrangement Turning wheel

Crankshaft Two-Stroke Medium Bore

(107)

(2600/KNB)

(108)

(2600/KNB)

Hydraulic Cylinder Unit – Distributor Block.

Exhaust Valve Actuator high pressure supply Fuel Pump

high pressure supply

Main Hydraulic Pressure

(109)

(2600/KNB)

S70ME-C

Weigth: 777kg

S60ME-C

Weigth: 555kg

Distributor Block Comparison – S70 vs. S60ME-C Two-Stroke Medium Bore

(110)

(2600/KNB)

Cylinder Frame for S70ME-C without

integrated housing for camshaft.

(111)

S50ME-C Fuel pump ELFI

Suction valve Fuel oil inlet

(112)

Distributor Block

(113)

Bores in Distributor Block

(114)

Bores in Distributor Block.

(115)

Oil cylinder – top piece (KPF)

Piston – step 2 (SNitr)

(2 test pistons – tenifer) (S34Cr1)

Oil cylinder – middle piece (KP)

Piston – step 1 (SNitr)

Minimess (x2) Kantseal

Oil cylinder – bottom piece (SNitr) Kantseal (x2)

(116)