Bosch ME17.5: Difference between revisions
(Introduction) |
mNo edit summary |
||
Line 250: | Line 250: | ||
The ME17.5.6 have some differences versus the ME17.5, extra modules, extra strategies and different map name. You can refer to the [https://the07k.wiki/upload/Funktionsrahmen_MED17.1.62.pdf MED17.1.62 funktionsrahmen] | The ME17.5.6 have some differences versus the ME17.5, extra modules, extra strategies and different map name. You can refer to the [https://the07k.wiki/upload/Funktionsrahmen_MED17.1.62.pdf MED17.1.62 funktionsrahmen] | ||
This ecu is load-dependent. The driver request a load and the ECU will target the requested load. | This ecu is load-dependent. The driver request a torque, that torque is then converted to a load request and the ECU will target the requested load. | ||
== Engine load == | |||
The ME17 do not use a MAF to measure the air mass, the air mass is calculated based on the intake manifold pressure and intake air temperature. The conversion factor <u>fupsrl</u> convert the intake manifold pressure into load. The map '''<u>KFDPBRWE</u>''' can be used to bring correction to <u>fupsrl.</u> | |||
=== MAP sensor scaling === | |||
If you fit a different MAP sensor, you can alter those two map to get the proper sensor scaling: | |||
* '''<u>DSSGRAD</u>''' : Gradient for pressure sensor intake manifold pressure | |||
* '''<u>DSSOFS</u>''' : Offset for pressure sensor intake manifold pressure | |||
=== Requested load === | |||
The following maps corresponds to the desired traction torque depending of the current gear (manual) or selected driving mode (auto) : | |||
* '''<u>AccPed_trqEng1_MAP</u>''' : 1st gear (leading) desired traction torque from engine speed and APP_rUnFlt | |||
* '''<u>AccPed_trqEng2_MAP</u>''' : 2nd gear (leading) desired traction torque from engine speed and APP_rUnFlt | |||
* '''<u>AccPed_trqEng3_MAP</u>''' : 3rd gear: (advanced) traction request torque from engine speed. | |||
* '''<u>AccPed_trqEng4_MAP</u>''' : 4th gear: (advanced) traction request torque from engine speed. | |||
* '''<u>AccPed_trqEngRev_MAP</u>''' : Driving behavior map reverse gear engaged | |||
* '''<u>AccPed_trqEng0_MAP</u>''' : start map | |||
You can use the same values for all of those maps. If the engine produces more torque, you will need to edit those accordingly. Values are in nm. | |||
The following map corresponds to the accelerator pedal in function monitoring : | |||
* '''<u>MoF_trqEngAPP_MAP</u>''' : Accelerator pedal map | |||
Again if the engine produce more torque, you will need to alter this map. You can also edit the above maps if you wishes to change the profile and the response of the accelerator pedal. |
Revision as of 00:10, 3 November 2023
Reading, writing and checksums
For reading and writing procedures refer to Reading and writing ECU (ME7.1.1)
Most flashing tools fix checksums automatically, if you wish to fix them manually, you can use LSuite
Definition file can be found here. If you are getting started with tuning we recommend consulting : Introduction to tuning
Terminology (Acronyms)
Maps and variables names are identified under acronyms. Knowing some of them will be useful and will help you remember map names.
Here is a list of the useful ones.
Acronym | German | English |
---|---|---|
A | Auslaßnockenwelle aktiv | Exhaust camshaft active |
AB | Abregelfaktor | Derating factor for acceleration signal |
AL | Adaptation Lastbereich | Adaptation load range |
ASR | Anti-slip regulation | |
BB | Betriebsbedingungen | Operating conditions |
BG | Berechnete Große | Calculated variable |
BTS | Bauteilschutz | Component protection |
CW | Code word | |
DFPM | Diagnose-Fehlerpad-Managers | Diagnostic Faulth Path Manager |
DK | Drosselklappe | Throttle valve |
DS-S | Pressure sensor (MAP) on intake manifold | |
E | Ersatzwert | Substitute value |
ESUK | Einspritzung Ubergang Kompensation | Injection transition compensation |
FA | Fahrer | Driver |
FGR | FahrgeschwindigKeitsregler | Cruise control |
FK | Faktor | Factor |
FUEREG | Fullungreglers | Filling regulators |
HFM | Hot film air mass sensor | |
KF | Kennfeld | Map |
KL | Kennlinie | Curve |
KN | Klopfereignis | Knock event |
KR | Klopfregelung | Knock control |
KRA | KR-adaptation | KR-Adaptation |
KUPPL | Kupplung | Clutch |
KW | Kurbelvelle Grad | Crankshaft degrees |
LL | Leerlauf | Idle |
LLK | Leerlauf und geoffneter kupplung | Idle and open clutch |
LLRBB | Leerlaufregelung Betriebs dedingungen | Idle control operating conditions |
LU | Laufunruche | Unstediness / roughness |
LUAR | Laufunruhe-Abstandsmass-Referenzwert | Rough running distance measure value |
LUR | Laufunruche-Referenzwert | Rough running reference value |
MBVH | Missbrauchverginderung | Abuse prevention |
MI | Motormoment indiziertes | Indicated torque |
ML | Motor Luftmassendurchsatz | Engine air mass flow |
MN | Minimum | |
MS | Massenstrom | Mass flow |
MX | Maximum | |
N | Normierter | Normalized / NM |
NW | Nockenwellen | Camshafts |
NWS | Nockenwellengsteverrung | Camshaft control |
OP | Optimales | Optimal |
PVD | Pressure vor Drosselklappe | Pressure in front of DK |
RL | relative Luft | Relative air filling (load) |
RLMIN | Relative mimale Luft | Relative minimal air (filling) |
SA | Schubabschatten | Fuel cut-off / overrun |
SOL | Soll | Should |
SW | Schlechtwegstrecke | Rough road |
TPKHFM | TemperaturKorrektur HFM | Temperature correction HFM |
TUM | Umgebungstemperator | Ambient temperature |
TV | Delay time | |
UGD | Ungedroselt | Unthrottled |
V | Verzogert | Delayed |
WDK | DK-Winkel | DK angle |
WKR | Winkelspatverstellung | Angle retard KR |
WL | Warmlauf | Warm up |
ZUL | Zulassig | Allowed limit |
ZW | Zundungs Winkel | Ignition angle |
Engine management
The ME17.5 use a TC1766 micro-controller. The ME17.5.6 use a TC1767 micro-controller. The program memory and the maps are both stored into the MCU which defers from the ME7.1.1 that have two chipsets, one for the MCU and an extermal memory chipset to store the maps.
There is no public funktionsrahmen for the ME17.5. You can use the MED17.5 Funktionsrahmen which will have some difference regarding injection as the MED17 use direct injections strategies while the ME17 use ported injection. For the missing modules, you can refer to the ME7.5 Funktionsrahmen.
The ME17.5.6 have some differences versus the ME17.5, extra modules, extra strategies and different map name. You can refer to the MED17.1.62 funktionsrahmen
This ecu is load-dependent. The driver request a torque, that torque is then converted to a load request and the ECU will target the requested load.
Engine load
The ME17 do not use a MAF to measure the air mass, the air mass is calculated based on the intake manifold pressure and intake air temperature. The conversion factor fupsrl convert the intake manifold pressure into load. The map KFDPBRWE can be used to bring correction to fupsrl.
MAP sensor scaling
If you fit a different MAP sensor, you can alter those two map to get the proper sensor scaling:
- DSSGRAD : Gradient for pressure sensor intake manifold pressure
- DSSOFS : Offset for pressure sensor intake manifold pressure
Requested load
The following maps corresponds to the desired traction torque depending of the current gear (manual) or selected driving mode (auto) :
- AccPed_trqEng1_MAP : 1st gear (leading) desired traction torque from engine speed and APP_rUnFlt
- AccPed_trqEng2_MAP : 2nd gear (leading) desired traction torque from engine speed and APP_rUnFlt
- AccPed_trqEng3_MAP : 3rd gear: (advanced) traction request torque from engine speed.
- AccPed_trqEng4_MAP : 4th gear: (advanced) traction request torque from engine speed.
- AccPed_trqEngRev_MAP : Driving behavior map reverse gear engaged
- AccPed_trqEng0_MAP : start map
You can use the same values for all of those maps. If the engine produces more torque, you will need to edit those accordingly. Values are in nm.
The following map corresponds to the accelerator pedal in function monitoring :
- MoF_trqEngAPP_MAP : Accelerator pedal map
Again if the engine produce more torque, you will need to alter this map. You can also edit the above maps if you wishes to change the profile and the response of the accelerator pedal.