gf0761p6000mtc

ME-SFI [ME] control unit, component description

Tipo gf · tema 07.61 · versão 0100 · 2012-05-31

Válido para: ENGINES 270.9 in MODEL 242 with CODE (924) Monovalent natural gas drive

Não disponível em “pt”; apresentado em Inglês.

Onde se situa

Grupo funcional 1 Motor › 07 Preparação da mistura › 07.61 Sistema de injeção de gasolina e sistema de ignição ME — Série 242

Também válido para motores/caixas de velocidades: 270 9**

GF07.61-P-6000MTC

ME-SFI [ME] control unit, component description

10.5.12

ENGINES 270.9 in MODEL 242 with CODE (924) Monovalent natural gas drive

ME-SFI [ME] control unit, component description

P07.70-2291-76

View of engine from front

1 Air cleaner housing

N3/10 ME-SFI [ME] control unit

Location

The ME-SFI [ME] control unit is located on the left on the air filter housing.

Task

The ME-SFI control unit fulfills the following tasks:

Controlling the basic engine functions

Reading in of sensors and signals

Evaluation of input factors

Output of signals and actuation of components

The ME-SFI [ME] control unit also acts as the interface (gateway) between the connected CAN bus systems.

Controlling the basic engine functions

- emission control

- diagnosis and fault storage

- electronic accelerator

- drive authorization system and immobilizer

- blowing in of gas

- alternator interface

- regulated camshaft adjustment

-----------------------------------------------------------------------------------------

- high pressure gasoline injection

- fuel supply

- charge pressure control

- torque interface

- engine timing start stop function (for code (B03) ECO start/stop function)

- heat management

- ignition system

Reading in of sensors and signals

Input factors are read in by means of the following connections:

- direct line

- drivetrain LIN (LIN C1)

- drive train CAN (CAN C)

- chassis CAN (CAN E)

- drive train sensor CAN (CAN I)

-----------------------------------------------------------------------------------------

Evaluation of input factors

The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Output of signals and actuation of components

Initial parameter are output over the following connections:

- direct line

- drivetrain LIN (LIN C1)

- drive train CAN (CAN C)

- chassis CAN (CAN E)

- drive train sensor CAN (CAN I)

The electronic ignition lock control unit (N73) is the central interface (Gateway) for exchange of function-relevant data for control units which are connected to the various Control Area Network (CAN) bus systems.

Input factors and initial parameters for the following components are read in or output over direct lines by the ME-SFI [ME] control unit and are needed by the engine timing:

Input factors over the direct line

Initial parameters over the direct line

Supplemental information

Circuit 15

-

-

Circuit 30 (fused)

-

-

Circuit 31

-

-

Circuit 87M4

-

-

Knock sensor 1 (A16/1)

-

-

Knock sensor 2 (A16/2)

-

-

Fuel pressure and temperature sensor (B4/25)

-

-

intake camshaft Hall sensor (B6/15)

-

-

exhaust camshaft Hall sensor (B6/16)

-

-

Coolant temperature sensor (B11/4)

-

-

Charge air temperature sensor upstream of throttle valve (B17/7)

-

-

Charge air temperature sensor downstream of throttle valve (B17/9)

-

-

Pressure sensor downstream of air filter (B28/5)

-

-

Pressure sensor upstream of throttle valve (B28/6)

-

-

Pressure sensor downstream of throttle valve (B28/7)

-

-

Accelerator pedal sensor (B37)

Accelerator pedal sensor (B37)

-

Crankshaft Hall sensor (B70) (with direction of rotation recognition)

-

-

Sensor element for oxygen sensor downstream of catalytic converter (G3/1b1)

-

-

-

Heater for oxygen sensor downstream of catalytic converter (G3/1r1)

-

Sensor element for oxygen sensor upstream of catalytic converter (G3/2b1)

-

-

-

Oxygen sensor heater upstream of catalytic converter (G3/2r1)

-

-

Starter circuit 50 relay (F58kM)

-

-

Circuit 87M relay (F58kN)

-

-

Transmission cooling coolant circulation pump relay (F58kO)

-

-

Fan motor (M4/7)

-

-

Actuator motor (M16/6m1), throttle valve

-

Actual value potentiometer 1 (M16/6r1), throttle valve

-

-

Actual value potentiometer 2 (M16/6r2), throttle valve

-

-

Supplemental Restraint System control unit (N2/10)

-

-

-

Fuel pump control unit (N118)

-

-

CNG control unit (N118/2)

-

-

Coolant thermostat heating element (R48)

-

Oil level check switch (S43)

-

-

-

Cylinder 1 ignition coil (T1/1)

-

-

Cylinder 2 ignition coil (T1/2)

-

-

Cylinder 3 ignition coil (T1/3)

-

-

Cylinder 4 ignition coil (T1/4)

-

-

Intake camshaft solenoid (Y49/1)

-

-

Exhaust camshaft solenoid (Y49/2)

-

-

Purge control valve (Y58/1)

-

-

Partial load operation crankcase ventilation valve(Y58/2)

-

-

Cylinder 1 fuel injector (Y76/1)

-

-

Cylinder 2 fuel injector (Y76/2)

-

-

Cylinder 3 fuel injector (Y76/3)

-

-

Cylinder 4 fuel injector (Y76/4)

-

-

Boost pressure control transducer (Y77/1)

-

-

Quantity control valve (Y94)

-

-

Divert air switchover valve (Y101)

-

-

Gas injection valve gas for cylinder 1 (Y106/1)

Actuation via the CNG control unit (N118/2)

-

Gas injection valve gas for cylinder 2 (Y106/2)

Actuation via the CNG control unit (N118/2)

-

Gas injection valve gas for cylinder 3 (Y106/3)

Actuation via the CNG control unit (N118/2)

-

Gas injection valve gas for cylinder 4 (Y106/4)

Actuation via the CNG control unit (N118/2)

-

Engine oil pump valve (Y130)

-

-

Coolant pump switchover valve (Y133)

-

Input factors and initial parameters for the following components and control units are transmitted or received over the LIN or CAN by the ME-SFI [ME] control unit and are required by the engine timing:

Input factors via the drivetrain LIN (LIN C1)

Initial parameters via the drivetrain LIN (LIN C1)

Supplemental information

Alternator (G2)

Alternator (G2)

-

Input factors via drive train CAN (CAN C)

Initial parameters via drive train CAN (CAN C)

Supplemental information

Dual clutch transmission fully integrated transmission control unit (Y3/14n4)

Dual clutch transmission fully integrated transmission control unit (Y3/14n4)

-

Fuel pump control unit (N118)

Fuel pump control unit (N118)

-

Input factuators via chassis CAN (CAN E)

Initial parameters via chassis CAN (CAN E)

Supplemental information

Instrument cluster (A1)

Instrument cluster (A1)

-

DISTRONIC electric controller unit (A89) (with code (239) DISTRONIC PLUS)

-

-

Supplemental Restraint System control unit (N2/10)

-

-

SAM control unit (N10)

-

via interior CAN (CAN B) and electronic ignition lock control unit (N73)

Automatic air conditioning control and operating unit (N22/7)

-

via interior CAN (CAN B) and electronic ignition lock control unit (N73)

Electronic Stability Program control unit (N30/4)

-

-

Left front door control unit ()N69/1

-

via interior CAN (CAN B) and electronic ignition lock control unit (N73)

Upper control panel control unit ()N72/1

-

Over the battery sensor LINE (LIN B15), the SAM control unit (N10), the interior CAN (CAN B) and electronic ignition lock control unit (N73)

Electronic ignition lock control unit (N73)

Electronic ignition lock control unit (N73)

-

Steering column tube module control unit (N80)

-

-

Diagnostic connector (X11/4)

Diagnostic connector ()X11/4

via diagnostic CAN (CAN D) and the electronic ignition lock control unit (N73)

Input factors via Drivetrain sensor CAN (CAN I)

Initial parameters via Drivetrain sensor CAN (CAN I)

Supplemental information

CNG control unit (N118/2)

CNG control unit (N118/2)

-

Design

The housing of the ME-SFI [ME] control unit is made out of diecast aluminum and the cover is made out of corrosion-proof sheet steel. The ME-SFI [ME] control unit is protected against water and dust.

The housing contains the 32-bit measuring and control electronics for the engine control.

Power supply

The ME-SFI [ME] control unit is "circuit 30 fused" and also supplied with a voltage for ignition ON by "circuit 87 M4" .

In the operating voltage range it has both short-circuit protection and reversed polarity protection.

Power is supplied through several pins connected in parallel to relieve the electrical connectors.

Ground connection

The "circuit 31" ground connection is made via multiple ground lines to the firewall ground point (W11).

No-load current shutoff

Information for partial function "no-load current shutoff" is documented in the function description "Energy management engine OFF function".

Variants

The engine control variants (e.g. national and exhaust variants) are activated with Xentry Diagnostics using the variant coding function.

Replacement of the ME-SFI [ME] control unit is not necessary.

Designation

Unit

Values

Tolerance range

Remarks

ME-SFI [ME] control unit ()N3/10

Power supply

V

12.0

Reverse polarity protection

Yes

Additional specific parameters

No

Flash capability/coding capability

Yes/yes

Special features

No

Knock sensor 1 (A16/1)

Knock sensor 2 (A16/2)

Model

Capacitive sensor (piezo crystal)

Capacity

pF

1050

250

Resistor

MΩ

>10

Fuel pressure and temperature sensor (B4/25)

Model

Combined pressure and temperature sensor

Supply voltage

V

5.0

5%

Power consumption

mA

mA

12

15

Maximum

Pressure measuring range

MPA

0 - 28

Operating pressure

MPA

34

Maximum

Bursting pressure

MPA

260

Temperature measurement range

°C

-40 - 140

Resistor

kΩ

10

at 25°C

Special features

4-pin connector

Intake camshaft Hall sensor (B6/15),

exhaust camshaft Hall sensor (B6/16)

Model

Hall sensor

Supply voltage

V

4.7 - 18

Maximum power consumption

mA

< 20

Distance to sensor

mm

0.2 - 1.8

Coolant temperature sensor (B11/4)

Model

NTC resistor
Negative Temperatur eCoefficient (NTC thermistor)

Signal plausibility

V

0.1 - 4.9

Series resistor

Ω

1470

1%

Resistance at: 20°C

40°C

60°C

80°C

100°C

120°C

Ω

Ω

Ω

Ω

Ω

Ω

3117

1338

631

322

175

101

Special features

Arbitrary polarity

Charge air temperature sensor upstream of throttle valve (B17/7), charge air temperature sensor downstream of throttle valve (B17/9)

Model

NTC resistor

Supply voltage

V

5.0

Special features

Arbitrary polarity

Pressure sensor downstream of air filter (B28/5)

Model

Pressure sensor

Supply voltage

V

5.0

Pressure sensor upstream of throttle valve (B28/6)

Model

Pressure sensor

Supply voltage

V

5.0

Pressure sensor downstream of throttle valve (B28/7)

Model

Pressure sensor

Supply voltage

V

5.0

Accelerator pedal sensor (B37)

Model

2 Hall sensors

Supply voltage

V

5.0

0.3 V

Power consumption

mA

mA

9

12

Typical

Maximum

Special features

Direct contacting over

6-Circuit. AMP plug

Crankshaft Hall sensor (B70)

Model

Hall sensor

Supply voltage

V

5.0

Special features

Depending in the direction of rotation

Alternator (G2)

Model

A/C alternator with integral rectification

Interface transfer rate: Maximum

kbit/s

19.2

Communication with the ME-SFI [ME] control unit via the LIN bus

Special features

Self-diagnosis

Oxygen sensor downstream of catalytic converter (G3/1) consisting of:

Sensor element for oxygen sensor downstream of catalytic converter (G3/1b1)

Heater for oxygen sensor downstream of catalytic converter (G3/1r1)

Model

Voltage-leap oxygen sensor (LSF
4.71)

Supply voltage

V

12

Circuit 87 M2

Medium heating current

mA

400

During idle

Internal resistance

Ω

200 - 250

Pump current

μA

μA

20 - 25

800

Center value

Maximum value

Pump cycle duration

ms

400

Sensor voltage for: T = 350°C λ= 0.97

T = 350°C λ= 1.03

mV

mV

>800

100 - 200

Dependent on exhaust temperature (T)

Sensor voltage for: T = 850°C λ= 0.97

T = 850°C λ= 1.03

mV

mV

>680

40 - 100

Dependent on exhaust temperature (T)

Special features

Potential-free insulated sensor with 4-way connector

Oxygen sensor upstream of catalytic converter (G3/2) consisting of:

Sensor element for oxygen sensor upstream of catalytic converter (G3/2b1)

Oxygen sensor heater upstream of catalytic converter (G3/2r1)

Model

Wideband oxygen sensor

(LSU 4.9)

Supply voltage

V

12

Circuit 87 M2

Medium heating current

mA

400

During idle

Internal resistance

Ω

100

Pump current

μA

μA

20 - 25

800

Center value

Maximum value

Pump cycle duration

ms

400

Nernst voltage

mV

450

Special features

Potential-free insulated sensor with 6-way connector

Fan motor (M4/7)

Model

Electric suction fan

Supply voltage

V

12

Circuit 87 M2 and circuit 30

Frequency

Hz

10

Pulse width modulated signal (PWM signal)

Actuation

%

10 - 90

PWM signal

Specified speed of the fan

Via a PWM signal from the ME-SFI [ME] control unit

Throttle valve actuator (M16/6) consisting of:

Actuator motor (M16/6m1), actual value potentiometer 1 (M16/6r1) and actual value potentiometer 2 (M16/6r2)

Model

Actuator motor with a contact-less angular sensor

Supply voltage of the actuator motor

V

12.0

Actuator motor power consumption

A

1.5 - 9.5

Special features

Counter-running actual value potentiometer

Wide open throttle operation vent line heating element (R39/2)

Model

Heating element

Rated voltage

V

12

Circuit 87 M2

Series resistor

Ω

10

at 25°C

Coolant thermostat heating element (R48)

Model

Heating element

Supply voltage

V

12

Circuit 87 M2

Operating current

A

< 1.9

Resistor

Ω

9.5

1 Ω

at 25°C

Oil level check switch (S43)

Model

Reed contact (normally closed contact)

Resistor

Ω

Ω

0

Oil level OK

Minimum oil level not reached

Special features

2-pin micro-Quadlok connector

Cylinder 1 - 4 ignition coils (T1/1 - T1/4)

Model

Single-spark ignition coil

Supply voltage

V

12

Special features

Capacitive pick up for diagnosis

Intake camshaft solenoid (Y49/1)

Exhaust camshaft solenoid (Y49/2)

Model

Magnet

Supply voltage

V

12

Circuit 87M3

Operating voltage

V

10 - 16

Maximum power consumption

A

< 3.0

Coil resistance

Ω

7.6

10%

Frequency

Hz

150

PWM signal

Actuation

%

5 - 95

PWM signal

Ambient temperatures

°C

-40 - 155

Purge control valve (Y58/1)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87 M2

Operating voltage

V

9 - 16

Frequency

Hz

200

PWM signal

Coil resistance

Ω

14.2

Partial load operation crankcase ventilation valve (Y58/2)

Model

Pressure relief valve

Supply voltage

V

12

Fuel injectors for cylinders 1 to 4 (Y76/1 - Y76/4)

Model

Piezo injectors

Resistor

kΩ

220

10 KΩ

Special features

2-pin connector

Pin 1 (Highside),
Pin 2 (Lowside)

Boost pressure control transducer (Y77/1)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87 M2

Duty cycle

%

100

Duty cycle

%

5 - 95

For 10 V

Operating frequency

Hz

300

PWM signal

Coil resistance

Ω

10.5

0.7

Air consumption

l/h

< 35

Quantity control valve (Y94)

Model

Power consumption

A

approx. 14

Maximum at 20°C

Effective current

A

< 5

Maximum at 20°C

Coil resistance

Ω

0.49

5%

at 20°C

Frequency

kHz

4

PWM signal

Actuation

%

10 - 90

PWM signal

Divert air switchover valve (Y101)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87 M2

Operating voltage

V

10 - 16

Maximum power consumption

A

2,36

0.06 A

Total resistance

Ω

8,9

0.25 Ω

at 25°C

Gas injection valve gas for cylinder 1 - 4
(Y106/1 - 4)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87M3

Engine oil pump valve (Y130)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87 M2

Frequency

Hz

200

PWM signal

Coolant pump switchover valve (Y133)

Model

Solenoid valve

Supply voltage

V

12

Circuit 87 M2

Wiring diagram for gasoline direct injection system control unit

N3/10 Engine plug, sheet 1

PE07.08-P-2101-97IAA

N3/10 Engine plug, sheet 2

PE07.08-P-2101-97IAB

N3/10 Vehicle plug

PE07.08-P-2101-97IAC

Documentos referenciados