Presentation on mpfi ICE

1. L- 28. M.P.F.I.System

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VF ,[XGG[ VT[ TD[ ,
!P M.P.F.I. ;L:8DGF OFINF ;DHXMP
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M.P.F.I. ;L:8DGL ZRGF ;DHXMP
#P
E.C.U. G] SFI" ;DHXMP
$P
;[g;ZG] SFI" ;DHXMP

4. M.P.F.I. ;L:8DGF OFINFo
V[gHLGGF ,M0 VG[ :5L0 VG];FZ CJF
VG[ 5[8=M,G] RMS;F.YL lDz6
AGFJL XSFI K[P
CJFGF TF5DFG VG[ NAF64 S},g8G]
TF5DFG T[DH W}DF0FDF ZC[,F
VMS;LHGGF VFWFZ[ NCGG] lGIDG SZL

5. Fuel-air mixture
rich
lean
Engine output
Fuel consumption

7. K-Jetronic

8. KE-Jetronic

9. L-Jetronic

10. LH-Jetronic

11. Mono-Jetronic

12. Motronic MP

13. Motronic M5

14. Motronic ME 7

15. M.P.F.I. ;L:8DGL ZRGFo
T[G[ D]bItJ[ +6 D]HAGF EFUDF JC[RL
XSFIP
!P V[Z >G8[S ;L:8D
ZP >,[S8=MGLS S8=M,
#P OI], 0L,LJZL ;L:8D

16. V[Z >G8[S ;L:8Do
T[DF GLR[ D]HAGF EFUMGM ;DFJ[X YFI
K[P
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#P >G8[S D[GLOM<0o CJFG[ H}NF
H}NF ;L,Lg0Z TZO DMS,[ K[P
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17. >,[S8=MGLS S8=M,o
T[DF GLR[ D]HAGF EFUMGM ;DFJ[X YFI
K[P
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H]NF ;[g;Z TZOYL VFJTF ;LuG,G] 5|M;
[;LU SZL V[SrI]V[8ZG[ S8=M,SZ[ K[P
ZP V[SrI]V[8Zo T[ V[Z >G8[S VG[ OI], ;
%,FIG[ VM5Z[8 SZ[ K[P

18. OI], 0L,LJZL ;L:8Do
T[DF GLR[ D]HAGF EFUMGM ;DFJ[X YFI
K[P
!P OI], 5d5o T[ 8[gSDFYL
>gH[S8ZG[ OI], DMS,[ K[P
ZP 5|[XZ Z[uI],[8Zo T[ >gH[S8Z
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[ OI],GM :5|[ SZ[ K[P

19. OI], 0L,LJZL ;L:8Do
OI], 5d5 o

20. OI], 0L,LJZL ;L:8Do
OI], 5d5 o
;SXG

21. OI], 0L,LJZL ;L:8Do
>gH[
S8Z

22. E.C.U. G] SFI" o
T[DF DF>S|M 5|M;[;Z CMI K[ H[ ;[g;Z
TZOYL VFJTF JM<8[H~5L ;LuG,MG]
5|M;[;LU SZL V[SrI]V[8Z TZO H~ZL VFN[X
DMS, [K[P
8=A, 0FIuGM;L; DF8[ V[gÒG
V[G[,F>hZG[ DFlCTL VF5[ K[P

23. ;[g;ZG] SFI" o
M.P.F.I. ;L:8DDF J5ZFTF D]bI ;[g;Z
GLR[ D]HA K[P
!P Y|M8, 5MhLXG ;[g;Zo T[ E.C.U. G[ Y|
M8, JF<J S[8,M
B]<,M K[ T[GL HF6SFZL VF5[ K[P
ZP D[GLOM<0 V[a;M<I]8 5|[XZ sMAPf ;
[g;Zo T[ V[gHLGDF
5|J[XTL CJFGL HyYM DF5JF p5IMUL
K[P
#P V[Z O,M ;[g;Zo T[ V[Z O,M G[ 0FIZ[S8

24. ;[g;ZG] SFI" o
M.P.F.I. ;L:8DDF J5ZFTF D]bI ;[g;Z GLR[
D]HA K[P
5P >G8[S V[Z 8[d5Z[RZ ;[g;Zo T[ V[Z
lS,GZDF 5|J[XTL
CJFG] TF5DFG DF5[ K[P
&PS},g8 8[d5Z[RZ ;[g;Zo T[ S},g8GF
TF5DFGGL DFlCTL
ECM G[ 5CMRF0[ K[P
*P S|[gSXFO8 5MhLXG ;[g;Zo

25. ,FdA0F ;[g;Z o
Heating element
Protective tube
Connecting
cable
Shell
Disc spring
Electric contacts
Supporting
ceramic tube
ZrO2 sensor ceramics

26. ,FdA0F ;[g;Z o
Non-heated lambda
sensor
Heated lambda sensor

27. Lambda sensors - basic types
„LS“
0 258 001 xxx
Non-heated sensors (finger type λ = 1)
0 258 002 xxx
„LSH“
0 258 003 xxx
Heated sensors (finger type λ = 1)
0 258 005 xxx
„LSM“
0 258 104 xxx
Heated sensors (finger type λ > 1)
„LSF“
0 258 006 xxx
Heated sensors (planar type λ = 1)
„LSU“
0 258 007 xxx
Heated sensors (universal planar type, variable λ)

28. Gasoline direct injection Motronic MED 7
High-pressure
pump
Air-mass meter with
air temperature sensor
Electroni
c throttle
control
ETC
Electronic
control unit
MAP sensor
Fuel rail
Ignition coil
Pressure
control valve
Injectors
Pressure
sensor
Exhaust-gas
recirculation
valve
Lambdasensor (LSU)
NOxcatalytic
converter
In-tank module
including the
fuel-supply pump
Lambda
sensor (LSF)

29. Engine idle with wide open throttle
plate and low rpm
Stratified charge makes lean fuel-air
mixture up to approx. λ = 8 possible
Up to 20% reduced fuel consumption
compared with manifold injection
position
Throttle plate
Partial load with wide open throttle
plate (stratified charge)
Lambda ratio
Compression ratio up to approx.
ε = 17 possible
Engine torque
Gasoline Direct Injection
Stratified charge
Homogeneous charge
WOT
λ=1
0
Accelerator pedal position

30. 5]GZFJT"G
!P M.P.F.I. ;L:8DGF OFINF
ZP V[Z >G8[S ;L:8DGL ZRGF
#P >,[S8=MGLS S8=M, ;L:8DGF EFU
$P OI], 0L,LJZL ;L:8DGF EFU
5P E.C.U. G] SFI"
&PD]bI ;[g;Z VG[ T[GF p5IMU

31. :JFwIFI
!P M.P.F.I. ;L:8DG[ D]bItJ[ SIF SIF EFUDF
JC[RL XSFIm
ZP OI], 0L,LJZL ;L:8DGF EFUGF GFD VF5L
T[VMG]
SFI" H6FJMP
#PM.P.F.I. ;L:8DGF D]bI ;[g;ZGL IFNL
AGFJM VG[
T[DG] SFI" H6FJMP

32. p5;CFZ
• TF,LDFYL"VM M.P.F.I.l;:8D lJX[ HF6X[P
• TF,LDFYL"VM M.P.F.I. l;:8DGF EFUM
HF6X[P
• TF,LDFYL"VM M.P.F.I. l;:8D GL BFDL
lGJFZL XSX[P