У меня нету, просил в телеге группе, чёт не нашлось ни у кого.. и там человек с онлайном пробовал смотреть, тоже нету. Сказал видимо каких то прав доступа к стартам нету… хз в гугле уже раз 10 садился искать, ни разу один в один не нашёл.. может и ищу не так не знаю..
Если честно то не так часто нужно. Я же не в мерс центре. А по всем маркам держать это ппц.. хотя мысли посещали уже, буду благодарен если подскажете последнюю оффлайн версию рабочую, что именно искать, а не качать все что попало.. да и на мерс как то находится обычно, а тут засада какая то со смартом, инфы очень мало
Power supply from the on-board electrical system, function
22.2.06
ENGINE
122.9, 134.9, 135.9 in MODEL 454.0
1
Pre-excitation electrical circuit
2
Vehicle power supply voltage
3
Charging current
4
Load condition of alternator
5
Requirement of the motor electronics control unit
A1
Instrument cluster
A1e5
Alternator charge indicator/warning lamp
G1
Battery
G2
Alternator
K40/1
Fuse and relay module
K40/1kG
Preexcitation alternator
N3/10
Motor electronics control unit
P15.40-2356-05
General
For a running engine the alternator supplies the on-board electrical system with electrical energy and charges the battery. The alternator generates the three-phase current for this which is rectified.
Function
When switching on ignition (terminal 15) the voltage is applied at connection D+ of the alternator.
The charge control/warning lamp in the pre-excitation electrical circuit lights up. After starting the engine the alternator, driven via a poly-V-belt, generates the pre-excitation current self-sufficiently. When the earth potential disappears the charge control/warning lamp goes out. The alternator supplies current to the battery and the on-board electrical system via connection B+.
The alternator voltage is just slightly less than the gassing voltage of the battery. This means that adequate charging is achieved and damage to the battery through overcharging is prevented.
Regulation of the alternator takes place via the integrated electronics dependent on:
Engine speed
Vehicle power supply voltage
Requirement of the motor electronics control unit
The on-board power supply voltage is directly detected by the alternator electronics and evaluated.
The motor electronics control unit transmits its requirements in the form of a voltage signal to the alternator.
Voltage > 5 V: regulating voltage 14.2 V
Voltage < 5 V: regulating voltage 12.8 V
The status of the current operating rate of the alternator is transmitted via a data line to the motor electronics control unit. The signal can be read out using an oscilloscope. It is, however, not possible to make any statement about the current operating rate since no fixed pulse width exists.
Location
For engine 134 and 135 the alternator is located at the right front in the engine compartment.
For engine 122 the alternator is located at the right on the engine, in the area of the front axle carrier.
Assignment connection for signal lines
Drive control terminal:
Signal for alternator operating rate to motor electronics control unit (N3/10)
L-terminal:
Preexcitation of the alternator, control of the alternator charge indicator/warning lamp (A1e5)
S-terminal
Sensor line for alternator directly to circuit 30
G-terminal:
Charging voltage request from motor electronics control unit
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Task
The alternator supplies sufficient energy to the on-board electrical system for all occurring rotational speeds during driving and thus guarantees the on-board electrical supply and charging of batteries (G1).
Design
The alternator is designed as an alternator with integrated regulation.
Functional principle
Voltage generation in the alternator is based on the principle of induction. If a magnetic field changes in a conducting loop (coil or winding) an electrical voltage is induced in the conducting loop. If a coil has a rotating magnetic field running through it with a north and south pole then a sinusoidal AC voltage is generated.
The AC voltage is rectified using diodes.
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In the case of an alternator one differentiates between the electrical circuits:
pre-excitation electrical circuit
The pre-excitation electrical circuit builds up a magnetic field in the excitation winding after switching on the ignition
(terminal 15). After starting the engine the alternator provides the excitation function itself.
When the excitation current is flowing the alternator charge indicator/warning lamp goes out.
In the case of a defect alternator charge indicator/warning lamp or line interruption no preexcitation takes place since the pre-excitation electrical circuit is interrupted.
Excitation current circuit
The excitation current builds up the magnetic field in the excitation current of the rotor.
Charge current circuit
The charge current circuit supplies the on-board electrical system with electrical energy.
Control
Regulation of the alternator takes place by means of the integral electronics depending on the rotational speed, on-board power supply voltage and request from the motor electronics control unit.
The on-board power supply voltage is directly detected by the alternator electronics and evaluated.
The motor electronics control unit transmits its requirements in the form of a voltage signal to the alternator.
Voltage > 5 V: regulating voltage 14.2 V
Voltage < 5 V: regulating voltage 12.8 V
If there is a problem (e.g. line interruption) the alternator cannot deliver its full output.
Operating rate feedback
The signal operating rate feedback it readable using an oscilloscope. It is, however, not possible to make any statement about the current operating rate since no fixed puls