symposium for combustion control 2019 1 large engine ...€¦ · man-es 12v, 16v,-20v 28/33 10 000...

Symposium for Combustion Control 2019 1

Large Engine Combustion Control Dr.-Ing. Christian Poensgen, Dr. Matthias Auer, Stefan Roth

MAN Diesel-Turbo, Augsburg, Germany

Large Engine Combustion Control

Dr. Matthias AuerStefan RothDr. Christian Poensgen

June 05 2019

Strictly confidential

Confidential

MAN-ES Large Engine Portfolio

MAN-ES K98 ME-CMAN-ES 20V 45/60MAN-ES 12V, 16V,

20V 175

84 280 kW26 000 kW4 000 kW1500 kW

MAN-ES K98 ME-CMAN-ES S35ME-B9

3.200 kW 84 280 kW

MAN-ES 5L16/24

500 kW

MAN-ES 20V 45/60

26 000 kW

MAN-ES 20V 28/33

10.000 kW

MTB 12VD28

1500kW

2 Stroke Engines

4 Stroke Medium Speed Engines

4 Stroke High Speed Engine

MAN-ES 12V, 16V,-

20V 28/33

10 000 kW

05.06.2019 Dr. Matthias Auer, Stefan Roth, Dr. Christian Poensgen– ©2019

2 Symposium for Combustion Control 2019


Confidential

MAN-ES 4 Stroke Product Portfolio

05.06.2019 4

6-9L

0 5000 10000 15000 20000 25000 30000

45/60

51/60DF

48/60 CR

35/44 G 35/44 DF

32/44 K

32/40 G32/40

27/3821/3116/24

kW

V12-V20

6-9L

V12-V20

12V / 20V

V12-V18

6-9L V12-V18

V28/33

51/60G

35/44 G TS 12V / 20V

D7 GasD7

6-9L

V12V/16V/20V

12V/16V/20V

12V/16V/20V

6-9L

6L/ 9L

12V –18V

V12 /,V18

6-10L 12V - V20V

12V / 20V

6-10L 12V –20V

32/44 CR TS

Small Bore

High

Speed D7

32/40 Family

32/44 Family

48/60 Family

45/60

6-9L

6-9L

12V –18V

12V –18V

12V –18V

6-9L 12V/14V / 20V

51/60 TS 12V –18V

32/44 CR6-10L

All engines for powerplant applications with

thermodynamic variants

- 2 power versions

- net electricity generation

- combined cycle (CC)

- combined heat power (CHP)

+ optimised for various climat zones

All Marine applications with

- Tier III ready with SCR Operation

All CR Marine applications with power

management options

51/60G TS12V –18V

HFO

Dual Fuel

Gas

dev. approved

Dr. Matthias Auer, Stefan Roth, Dr. Christian Poensgen– ©2019


Confidential

Requirements on 4-Stroke MS Engines

11.06.2018Author – Current Topic – ©2018 5

- Cylinder Variants : 6L => 20V

- Turbocharging: single stage, 2- stage, sequential turbo charging

- Turbocharging Control: compressor bypass, wastegate, VTA

- Variable Valve Train: mechanical 2 – 3 Point, partial hydraulic, full hydraulic

- Combustion process: Diesel, Otto, Dual Fuel

- Injection Systems: PLD, PLD with VIT, electronical PLD, PLD Twin System (Wärtsilä), CR 1.6, CR 2.2

Wärtsilä W31, multi fuel double injectors (Wärtsilä / l‘Orange)

- Climate adjustments: arctic, desert, tropical, hot and high

- Running hours: 500hr/year up to 8000 hrs/year

- Starts per year: 10 up to 1500

- Regulatory: US-EPA, EU, IMO, Worldbank, Navy, nuclear, self certification => local regulations

- Applications Power single cycle, combined cycle, combined heat power

- Propulsion Systems direct propulsion, electric propulsion, hybrid solutions, single engine – multi engines




Confidential

Four Stroke Engine CombusionProcesses Diesel – Gas – Dual Fuel

Diesel

Compression ignition

Diffusion controlled combustion

Gas (SI)

Spark ignition / scavenged pre-

chamber

Premixed combustion

Dual Fuel

Diesel: Compression ignition

Diffusion controlled combustion

Gas: Compression ignition

Premixed combustion



Confidential

Variation of Fuels

LNG

LPGMethanol & DME CNG

Biogas/biodieselHFO Distillate Fuels Emulsions

Hydrogen Amonia

Existing Fuels

Potential Candidates for Future Synthetic Fuels

Hydrogen




Confidential

Marine Fuel Forecast

05.06.2019Dr. Matthias Auer, Stefan Roth, Dr. Christian Poensgen– ©2019 9

Source: DNV GL 2018


Confidential

World Electricity Generation by Source


Source: DNV GL 2018



Confidential

Energy Storage


Source: Siemens Gamesa – electric thermal energy storage 2017

re-electrification by

large piston engines


Confidential

Potential Injection Systems


Liquid Fuel CR System 2200 bar

- Multi injection capability

- Low quantity injection capability

< 2% of full injection to replace

pilot injectors

- HFO capability is must have for

the next 30 years

Multi Fuel Injector

- high pressure gas injection

- Low quantity pilot injection with the capability to cover

full power range in case is not available

- Gas lean burn combustion will come under pressure

once methane slip will regulated



Confidential

ME-GI Gas Fuel Mode



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Multi Fuel Capability


Decisions to be taken now

1. Today it is unclear which fuel will dominate at the end

=> large engine supplier will be forced to keep the

options open by developing the appropriate combustion technologies

2. Large engines have a life cycle between 30 and 50+ years

=> it can be expected measures will be taken to mitigate negative effects of climate change

=> the engines will receive different fuels during plant lifetime

=> secure plant owner investments by easy measures to switch fuels is a must have

=> todays engine design need to anticipate future requirements

=> modular fuel supply systems

=> modular injection systems

=> conduct single cylinder combustion test

=> assure fuel conversion on engines at lowest cost

(piping, injection, emissions, controls , safety, …)



Confidential

Case Project – Engine

05.06.2019 5

Enlargement of an LNG Plant in Near East

Powerplant delivers electrical energy

for LNG production and operation of a

LNG terminal

Current powerplant is driven by gas

turbines because of capability of gas

turbines to handle various gas

qualities in a wide range

MAN-ES could convince the operator

to replace gas turbines to with

MAN-ES 51/60 G engines capable to

handle a wide range of gas quality

Dr. Matthias Auer, Stefan Roth, Dr. Christian Poensgen– ©2019


Confidential

Case Project

6

Gas Compositions

mol % Gas 1 Gas 2 Gas 3 Gas 4 Gas 5

Methan 56,40% 63% 77% 86% 88%

Ethan 1% 1% 1% 1% 8%

Propan < 1% < 1% < 1% < 1% 3%

N2 42% 35% 20% 5% <1%

Heat Rate MJ/Nm³ 22000 26000 35000 45000 49000

MN 86 84 82 69 67




Confidential

Benefit of Reciproking Engine versus Gas TurbinesPlant Efficiencies

7

Pla

nt

Eff

icie

nc

y %

20

40

50

40 50 60 70 80 90

Plant Load %

30

100

Engine 5 Engine 10Engine 6 Engine 7 Engine 8 Engine 9



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Benefit of Reciproking Engine versus Gas Turbines Impact of ambient Temperature on Power Output

8

Pla

nt

Ou

tpu

t [%

]

60

80

100

0 10 20 30 40 50

Ambient Temperature

MAN-ES 51/60 G

Gas Turbine

Required Window of Operation

Surplus Energy

not needed

=> Derating Required


MAN 51/60 G

Gas Turbine



Confidential

Cylinder Head 51/60G

9

1

2

3

4 5

6

7

1 Main Gas Valve

2 Prechamber Gas Valve

3 Prechamber

4 Check Valve

5 Spark Plug with Extender

6 Ignition Coil

7 Combustion Pressure Sensor

8 Combustion Pressure Module

8



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Low heat rate fuel gas – lower burning velocity




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Adaptive Combustion Control

11

Firing Pressure



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Adaptive Combustion Control


In this case CoC was kept

constant over the range of the

various fuel quality leaving SoC

and lambda free



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Comparison of control strategies

13

Control strategy NOx constant (ign. timing adjusted - red) vs.

Control strategy center of combustion constant (air-fuel-ratio adjusted - green)



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Switch-over from high to low heat rate fuel gas

14

time

Co

C,

p_

ch

arg

ea

ir, ig

n. tim

ing

combustion adapted to new fuel gas

new fuel gas detected

charge air pressureignition timingcenter of combustion




Confidential

Power-to-X: This technology is available

15

The key for CO2-neutral & stable power supply – across sectors

05.06.2019Power-to-X: The Key for the Maritime Energy Transition | Dr. Matthias Auer – ©2019


Confidential

All data provided in this document is non-binding.

This data serves informational purposes only and is especially not guaranteed in any way.

Depending on the subsequent specific individual projects, the relevant data may be subject to changes and

will be assessed and determined individually for each project. This will depend on the particular characteristics

of each individual project, especially specific site and operational conditions.


symposium for combustion control 2019 1 large engine ...€¦ · man-es 12v, 16v,-20v 28/33 10 000...

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