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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. 16th 2015
Dipl.-Ing. Joachim Paul, Diesel Systems, Robert Bosch GmbH
1
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
22
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
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
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
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
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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
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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
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Thank you for your attention !Questions ?
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