bosch diesel systems beyond fuel injection & exhaust gas ... diesel... · bosch diesel systems...

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DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas Treatment: Air System and Hybridization ICE 2015, Capri, Sept. 16 th 2015 Dipl.-Ing. Joachim Paul, Diesel Systems, Robert Bosch GmbH 1

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Page 1: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

1

Bosch Diesel Systems beyond Fuel Injection& Exhaust Gas Treatment:

Air System and Hybridization

ICE 2015, Capri, Sept. 16th 2015

Dipl.-Ing. Joachim Paul, Diesel Systems, Robert Bosch GmbH

1

Page 2: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

2

Content

Introduction

Air system approach

Diesel hybridization concept

Summary

2

Page 3: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

2014 2015 2016 2017 2018 2019 2020 2022 20232021 20252024 2026

EU 5 EU 6 post-EU 6

MNEDC-based testing WLTP-based testing

Development phase

130 g/km 100% fleet Next step?95% 95 g/km 100% fleet, proposals

limit ≤ cf • criteria emission limit

emission

CO2

cycle

RDE

60

100

140

180

220

260

800 1200 1600 2000 2400

CO

2[g

/km

]

vehicle mass [kg]

Gasoline vehicles

Diesel vehicles

Source ADAC 2015/3

Europe2)

25

30

35

15

20

10

5

0 9%

20

34%

18

Veh.

[m] -1,2%

0,4%

39%

17

40%

17

39%

18

44%

19

43%

211514131107

Source: Long Term Forecast 11.2014 w/o 3-wheelers and OHW

Diesel

Gasoline DI

Gasoline

Flex-Fuel, CNG, LPG, Alcohol

Hybrid, EV, Hydrogen1)

1) includes Gasoline / Diesel Hybrid and 48V2) includes EU27 + other countries (non-EU, RU, TR, …)

3

Page 4: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

BM

EP

[bar

]0

2

4

6

8

10

12

14

16

18

20

22

engine speed [rpm]800 1200 1600 2000 2400 2800 3200 3600 4000

Diesel Systems

4

acce

lera

tion

[m/s

²]

-3.0

-2.0

-1.0

0.0

1.0

2.0

3.0

velocity [km/h]0 20 40 60 80 100 120 140

NEDCWLTCRDE

Significant increase of transient operations and wider operation area for new driving cycles

Increase of Transient Operations Wider engine operating area

Euro 6 + RDEWLTP & RDE

Euro 1 – 5 (6) MNEDC

WLTC

WLTC and Real Driving Emissions

4

Page 5: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Diesel Systems

exhaust gas after

treatment

future legislation

FIE benchmark

injectionstrategy

innovative concepts

single cylinder engine

platform demonstrator

Air System• Advanced T/C HW• New SW functions (transient

and model based engine control)

Diesel Hybridization• Boost recuperation system• Operating mode strategy (stationary and transient conditions)

Bosch Diesel Systems beyond FIE & EGT

Complete testing platform for future technologies

5

Page 6: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

6

Content

Introduction

Air system approach

Diesel hybridization concept

Summary

6

Page 7: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

electrical actuator• minimal hysteresis• high actuating speed and force

titanium aluminide turbine wheel• 50% reduced inertia due to material • improved transient behavior• MIM process in development @ Bosch

VTG 2nd gen• reduced axial vane clearance• minimal hysteresis

Bosch speed sensor• no over speed damages• use of whole compressor map• additional OBD functionsnew aero design

• High flow turbine and compressor wheel

compressor wheel• hard anodized compressor wheel to

prevent damages due to low pressure EGR

ball bearing• improved transient behavior• reduced fuel consumption

Deriving turbocharger requirements within Bosch’s overall system approach

7

Page 8: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

basic configurationdisplacement 1.65 lrated power 110kW@4000rpmmax. torque 340Nm@1700rpmcompr. ratio 16bore 81mmstroke 80.5mmEGR low pressure +

high pressurebm

ep [b

ar]

5

10

15

20

25

30bsfc [g/kWh]

bmep

[bar

]

5

10

15

20

25

30

engine speed [rpm]1000 1500 2000 2500 3000 3500

NOx [g/kWh]

bmep

[bar

]

5

10

15

20

25

30bsfc [g/kWh]

WLTC, compact class

bmep

[bar

]

5

10

15

20

25

30

engine speed [rpm]1000 1500 2000 2500 3000 3500

NOx [g/kWh]

203205

215

210

230250

300400

1.0

7.0

5.0

3.0

2.00.6

Dedicated optimization of main driving area necessary

8

Page 9: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

T/

Tmax

[-]

0.700.750.800.850.900.951.00

mredT [kgK0.5/kPas]

0.000 0.004 0.008 0.012 0.016

p 2/p

1 [-]

1.01.52.02.53.03.54.0

mredC [kg/s]

0.00 0.04 0.08 0.12 0.16

1.00

C/Cmax [-]

bmep

[bar

]

5

10

15

20

25

30p2 - p3 [mbar]

bmep

[bar

]

5

10

15

20

25

30

engine speed [rpm]1000 1500 2000 2500 3000 3500

[-]

-200 -400-600

-200-100

0100

1.30

1.40

1.60

3.00

2.00

1.201.15

1.101.05

πT =2.8

-400-600

0.900.95

0.850.80

Increased bsfc caused by low air-fuel ratio and high gas exchange work at low engine speed

9

Page 10: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

T/

Tmax

[-]

0.700.750.800.850.900.951.00

mredT [kgK0.5/kPas]

0.000 0.004 0.008 0.012 0.016

p 2/p

1 [-]

1.01.52.02.53.03.54.0

mredC [kg/s]

0.00 0.04 0.08 0.12 0.16

1.00

C/Cmax [-]

T/

Tmax

[-]

0.700.750.800.850.900.951.00

mredT [kgK0.5/kPas]

0.000 0.004 0.008 0.012 0.016

p 2/p

1 [-]

1.01.52.02.53.03.54.0

mredC [kg/s]

0.00 0.04 0.08 0.12 0.16

1.00

C/Cmax [-]

T/

Tmax

[-]

0.700.750.800.850.900.951.00

mredT [kgK0.5/kPas]

0.000 0.004 0.008 0.012 0.016

p 2/p

1 [-]

1.01.52.02.53.03.54.0

mredC [kg/s]

0.00 0.04 0.08 0.12 0.16

1.00

C/Cmax [-]

bmep

[bar

]

5

10

15

20

25

30 pumping losses [mbar] performance TC efficiency TC

bmep

[bar

]

5

10

15

20

25

30

engine speed [rpm]1000 1500 2000 2500 3000 3500

bsfc [g/kWh] performance TC efficiency TC

performance TC65kW/l 340Nm@1700rpm

efficiency TC50kW/l 340Nm@1400rpm

270Nm@1400rpm

400

200

50

0

-400-800

0-5-10

-20 10 20

+10%

0.900.85 0.95

0.90

0.850.95

0.80

+13%

High fuel consumption benefit in main driving area with the efficiency TC

10

Page 11: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

time [s]0.0 2.0 4.0 6.0

boos

t pre

ssur

e [m

bar]

1000

1150

1300

1450

1600

desired actual

NO

x [pp

m]

0

200

400

600

800

torq

ue [N

m]

0

60

120

180

1 32

torq

ue[N

m]

boos

tpre

s. [m

bar]

NO

x[p

pm]

time [s]

Transient ECU strategyload step 1200rpm

1

EGRAIR fuel3

stationary low load operating point

stationary high load operating point

transient: temporary lack of boost pressure

2T

2E

torque forced control

emission forced control*

*EGR + fuel injection system control

Transient turbocharger performance as essential key parameter

11

Page 12: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

time [s]0.0 1.0 2.0 3.0

boos

t pre

s. [m

bar]

100011001200130014001500

NO

x [p

pm]

0120240360480

torq

ue [N

m]

0306090120

EGR

val

ve [%

]

04590

m

ain

inj.

[°C

A]

-100

10

time [s]0.0 1.0 2.0 3.0

boos

t pre

s. [m

bar]

100011001200130014001500

NO

x [p

pm]

0120240360480

torq

ue [N

m]

0306090120

EGR

val

ve [%

]

04590

m

ain

inj.

[°C

A]

-100

10

time [s]0.0 1.0 2.0 3.0

boos

t pre

s. [m

bar]

100011001200130014001500

NO

x [p

pm]

0120240360480

torq

ue [N

m]

0306090120

EGR

val

ve [%

]

04590

m

ain

inj.

[°C

A]

-100

10

NOx peak reduction

performance TC base

efficiency TC -12%

performance TC + transient control -28%

efficiency TC + transient control -40%

-12%

fuel consumption penalty

-28%-40%

No fuel consumption penalty

Load step 1200rpmEmission forced

performance TCefficiency TCperformance TC + transient controlefficiency TC + transient control

NO

x[p

pm]

boos

tpre

s.[m

bar]

φm

ain

inj.

[°C

A]

time [s]E

GR

val

ve[%

]to

rque

[Nm

]

Significant reduction of NOx peaks w/o reduced engine efficiency possible

12

Page 13: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

time [s]0.0 0.5 1.0 1.5 2.0 2.5

torq

ue [N

m]

-100

0

100

200

300

400

boos

t pre

ssur

e [m

bar]

1000

1500

2000

2500

3000

3500

Transient behavior

performance TC base

efficiency TC -33%

2-stage TC(simulation) -40%

-40%

-33%

T300Nm

Load step 1500 rpmTorque forced

performance TC

efficiency TC

torq

ue[N

m]

boos

tpre

s. [m

bar]

time [s]

2-stage TC (simulation)

Significant increase of transient performance due to efficiency turbocharger

13

Page 14: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Sim.based

Meas.based

Rel

ativ

e Fu

el C

onsu

mpt

ion

in %

95.0

96.0

97.0

98.0

99.0

100.0

Sim.based

Meas.based

MNEDC WLTP

-2.7%-3.5%

-1.8%

-2.6%

rela

tive

fuel

cons

umpt

ion

[%]

Fuel consumption benefit up to 2-3% due to efficiency turbocharger

14

Page 15: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

15

Content

Introduction

Air system approach

Diesel hybridization concept

Summary

15

Page 16: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

System description: P1m configuration

Considered Degrees of Freedom:

• Clutch open/closed• Torque distribution• Vehicle velocity

Torque distribution as major degree of freedom for P1m configuration

P1mclutch

startergearbox

engine

BRM

Fuel tank

Battery

System description:Vehicle 1470 kg curb weight

ICE Diesel

Swept volume 1,65 litre

Cylinders 4

Valves 4

CR 16

Power 90kW @ 4000 rpm

Torque 270 Nm @ 2000-2400 rpm

Emissions EU6

Gearbox MT5

Clutch electrical actuated

E-Drive 48V

E-Motor (BRM) 11kW peak power, air cooledRatio E-Motor/Crank shaft 3/1

Battery Lithium Ion

BRM Boost recuperation machine

16

Page 17: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Basic ECMS controller structure:

clutch

startergearbox

engine

BRM

Fuel tank

Battery

PICE

Con

trol

Vehi

cle

-

PeDrive

Pcosts

sSOC

PeDrive

PDriver min

CO2

Cost function

equivalence function

SOCref

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

ECMS: Equivalent Consumption Minimization Strategy

17

Page 18: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Diesel ECMS controller structure:

P1m

clutch

startergearbox

engine

BRM

Fuel tank

Battery

PICE

Con

trol

Vehi

cle

-

PeDrive

Pcosts

sSOC

PeDrive

PDriver min

wfuel*CO2 + wNOx*NOx

Cost function

equivalence function

SOCref

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

ECMS: Equivalent Consumption Minimization Strategy

18

Page 19: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Results Diesel ECMS:

Reduced NOx-Emissions w/ comparable consumption improvementfor wfuel = 0,8

Sum

NO

x [g

]

0

1

2

3

4

5

6

SOC

[%]

35404550556065

NO

x [g

/h]

0

100

200

300

400

500

600

Spee

d [k

m/h

]

0306090

120150

Time [s]0 100 200 300 400 500 600 700 800 900

Conventionalwfuel =1wfuel = 0,8

Sum

CO

2 [g

]

1250

1500

1750

2000

2250

700 800 900

19

Page 20: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Transient Diesel ECMS controller structure:

P1m

clutch

startergearbox

engine

BRM

Fuel tank

Battery

PICE

Con

trol

Vehi

cle

-

PeDrive

Pcosts

sSOC

PeDrive

PDriver min

wfuel*CO2 + wNOx*NOx

Cost function

equivalence function

SOCref

BTC(BRS transient control)

max

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Air System Dynamics

20

Page 21: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

ECMS: Stationary Emissions BTC: Transient Emissions

Diesel Systems

BRS transient control (BTC): Motivation

loadpBoostdynIndi

Dynamic indicator

BRS-Strategie

Additional transient torque intervention by BTC

Dynamic indicator(rel. boost pressuredeviation)

Diesel ECMS basedon stationary NOx-/CO2-Maps

NOx- & CO2-KF130610_868x00v121_P_597_C68_V450_ECS_eh05_pst_1_mAGR_ohneBRS.ipw Seite 15

BM

EP [b

ar]

0

2

4

6

8

10

12

14

16

18

20

22

24

26

Engine speed [rpm]800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800

2.0

3.04.0

4.0 5.0

5.0

6.0

6.0

8.0

10.0

12.022.0

32.0

32.03.8

23.7

23.5

28.2

31.0

26.435.2 38.6 39.2 34.8 33.6

33.936.0

36.135.8

40.339

2.0

3.04.0

4.0 5.0

5.0

6.0

6.0

8.0

10.0

12.022.0

32.0

32.0

NOBE_F [g/kg]

2

3

4

5

6

8

10

12

22

32

Pcosts

min

wfuel*CO2 + wNOx*NOx

BRS-Transient-Control

dynIndi *

1

0

max

0

BRM_trqMax =

0

BRM_trqDynAct

max

21

Page 22: Bosch Diesel Systems beyond Fuel Injection & Exhaust Gas ... Diesel... · Bosch Diesel Systems beyond FIE & EGT Diesel Systems 1 Bosch Diesel Systems beyond Fuel Injection & Exhaust

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGTN

Ox

[g/h

]

0

100

200

300

400

500

600

Spee

d [k

m/h

]

0306090

120150

Time [s]0 100 200 300 400 500 600 700 800 900

Sum

NO

x [g

]

0

1

2

3

4

5

6

SOC

[%]

35404550556065

Diesel Systems

Results Diesel ECMS + BTC:

Minimal NOx-emissions with 80%-CO2+BTC

Part 2Major

impact forNOx

reduction: Diesel ECMSPart 1

Major impact forNOx reduction:

BTC

Conventionalwfuel =1wfuel =1 +BTCwfuel = 0,8wfuel = 0,8 +BTC

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Bosch Diesel Systems beyond FIE & EGT

NO

x [%

]

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

CO2 [%]-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

Diesel Systems

CO2and NOx potential:

Increasing CO2 and NOx potential for real driving conditions

RTS95

wfuel = 0,8

wfuel = 0,8 + BTC

wfuel = 1

wfuel = 1 + BTC

WLTCMNEDC

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

w/o BRSN

Ox [

%]

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

CO2 [%]-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

wfuel = 1

wfuel = 0,8

wfuel = 0,5wfuel = 0,2

NO

x [%

]

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

CO2 [%]-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

wfuel = 1

wfuel = 1 + BTC

wfuel = 0,8

wfuel = 0,5wfuel = 0,2

NO

x [%

]

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

CO2 [%]-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

wfuel = 1

wfuel = 0,8wfuel = 0,5

wfuel = 0,2

wfuel = 1

wfuel = 1 + BTC

wfuel = 0,8

wfuel = 0,5wfuel = 0,2

NO

x [%

]

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

CO2 [%]-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

wfuel = 1

wfuel = 0,8wfuel = 0,5

wfuel = 0,2

wfuel = 1 + BTCwfuel = 1

wfuel = 1 + BTC

wfuel = 0,8

wfuel = 0,5wfuel = 0,2

23

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Bosch Diesel Systems beyond FIE & EGT

P-HEV

S-HEV

Diesel Systems

BOSCH HEV product portfolio:

BRS 48V

Pcosts

min

ECMS + BTC

DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Components Systems Functions

NO

xre

duct

ion

CO2 reduction

Engine

EGT

BOSCH enables optimized overall system w/ minimized CO2 and NOx emissions

24

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DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

25

Content

Introduction

Air system approach

Diesel hybridization concept

Summary

25

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DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

performanceTC

efficiency TC

2-stage TC

efficiency TC + transient

control

base line

• TiAl turbine• ball bearing• RDE compliant

-33% -40% -33%

-2.7%-1.8%

-3.5%-2.6%

-2.7%-1.8%

-12% not measured -40%

time to torque

NOx peak reduction

ΔfcMNEDCWLTP

Optimized overall system including RDE compliance developed by Bosch and BMTS Reduced fuel consumption demonstrated with further potential for down speeding Significant reduction of transient NOx emissions due to fast boost pressure built up and

advanced transient control: Reduction of costs for the EGT system possible + Fuel and cost efficient overall system

Air System Approach

26

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DS/EST | 16/09/2015 | pres15_002_DS_EST_ICE 2015-plenary.pptx | © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

Diesel Hybridization Concept A holistic approach for Diesel Hybrid Operating strategy was realized

Potential for CO2 and NOx reduction was demonstrated in three different driving cycles: MNEDC, WLTC, RTS95

Increasing CO2 and NOx potential for realistic driving cycles compared to homologation cycles

Diesel Hybrid Operating Strategy as one option for RDE fulfilment

Available as platform ECU function

Future development: Enlarge to higher hybridisation degrees (S-HEV, P-HEV) Adaptive closed loop operating strategy Include short-, mid- and long range prediction

27

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Bosch Diesel Systems beyond FIE & EGT

Diesel Systems

28

Thank you for your attention !Questions ?

28