EPHH control unit. AZLK 2141 (Muscovite)
Service and car repairs of 2141 - the Muscovite.
1. General data
2. Engines
3. Power supply system
4. Cooling system
5. Transmission
6. Running gear
7. Tires, wheels
8. Steering
9. Brake management
10. Body
11. Electric equipment
11.1. Wires and safety locks
11.2. Block of safety locks and relay
11.3. Scheme of internal connections of the block of safety locks and relay
11.4. Rechargeable battery
11.5. Electric equipment installed on cars of fashion. 2141-01, 2335
11.6. Electric equipment (21412-01, 214122, 214123 and 23352, 233522, 233523)
11.6.1. Generator 581.3701
11.6.2. Starter 4216.3708
11.6.3. System of ignition of the engine of fashion. 331i 3317
11.6.3.1. Distributor of ignition 47.3706
11.6.3.2. B115-V ignition coil
11.6.3.3. Spark plugs
11.6.3.4. Economizer of Compulsory Idling (ECI)
11.6.3.5. EPHH control unit
11.6.3.5.1. Check of the EPHH control unit
11.6.3.5.2. Possible malfunctions of the EPHH control unit
11.6.3.6. Sensor screw of provision of a butterfly valve
11.6.3.7. EPHH electromagnetic valve
11.6.3.8. Sensor of emergency pressure of oil
11.6.4. System of ignition of the engine of fashion. 3313
11.7. Electric equipment (2141-01, 21412-01, 214122, 214123 e 2335, 23352, 233522, 233523)
11.8. Control devices
12. Electrical circuitries
 










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11-6-3-5-blok-upravleniya-ehpkhkh.html

11.6.3.5. EPHH control unit

On the engine of fashion. 331 with the carburetor like "Soleks" the EPHH control unit of 50.3761 type intended for control of the electromagnetic valve is used.

The control unit continuously controls the frequency of rotation of a bent shaft of the engine by measurement of the period of repetition of impulses of system of ignition which are removed from the coil of ignition and move on a conclusion of "1" control unit. Besides, from the sensor screw in the control unit the signal allowing to distinguish the open or completely closed provisions of a butterfly valve is given.

With a frequency of rotation of a bent shaft of the engine less than 1245 min.-1 irrespective of a sensor screw signal conclusions "4" and "6" control units have the electric communication leading to passing of current through a winding of the electromagnetic valve.

At an open butterfly valve mobile and motionless contacts of the sensor screw are opened also conclusions "4" and "6" control units have electric communication irrespective of the frequency of rotation of a bent shaft of the engine.

After short circuit of contacts of the sensor screw provided that the frequency of rotation of a bent shaft of the engine exceeds 1245 min.-1, electric communication of conclusions "4" and "6" control units are broken off and again is restored or after decrease in frequency of rotation to 1245 rpm, or after disconnection of contacts of the sensor screw.



11.6.3.4.1. Possible malfunctions of a control system of EPHH

11.6.3.5.1. Check of the EPHH control unit