General information:

Ignition controller with internal idle economizer control unit (IECU) 1103.3734-01 is purposed for operation in contactless ignition systems and they ensure uninterrupted spark formation in the operating frequencies range of crankshaft rotation and also switching on/off of idle economizer electromagnetic valve in order to increase fuel saving and reduce toxicity of vehicle exhaust gases.

It is applied for reorganisation of such automobiles as "Volga", "Gazel" into the breakless ignition system with the Hall sensor.

The units operate together with the ignition coil 40.3705, 27.3705 or any other with analogous parameters and is controled by a signal of Hall effect sensor, built-in in the allocator with the input ratio from 1,3 up to 1,6.

The unit ensures:
- control of the idle economizer electromagnetic valve;
- protection of the idle economizer valve control circuit from a short-circuit on "mass" of the vehicle;
- protection from resistance reduction of idle economizer valve circuit;
- bringing of the stabilized supply voltage to the Hall sensor.

According to requirements to ignition systems, ignition controller ensures Hall sensor protection* against overvoltage by stabilization of voltage fed to the sensor.

The unit is produced in single climatic design О2.1 in accordance with GOST 15150 for internal market and for export. It is designed to operate over a single-wire scheme, in which the negative output of the supply voltage is connected to the vehicle housing. An operating mode of the unit in accordance with GOST 3940 is continuous nominal S1 in the range of rotation frequence of crankshaft from 500 to 7000 m and repeated short-time, per minute S3 with duty ratio 25 % in the frequency range from 20 to 500 m.

The unit 1103.3734-01 is mounted at switch starting on a stipulated for it setting in the vehicle with the help of standard fastenings and a standard plug, thus it is necessary to ensure reliable contact between the radiator of IECU and the vehicle housing.

The warranty period of exploitation is 3 years from the date of commissioning or from the date of sale in retail commercial network. The warranty obligations of the manufacturer are valid during 4 years from the date of the item production.

Specifications:

Range of operating temperatures, °С -40 .. +100   Nominal supply voltage, V 12,0   Permissible limits of supply voltage, V 6,0 .. 18,0   Range of an uninterrupted spark formation, rpm of the crankshaft 20 .. 7000   Commutating current, А 7,0 ± 0,3   Time of a sparkless cutoff of a collector current, sec 1 .. 2   Rotation frequence of crankshaft of 4-cycle 4-cylinder engine, rpm (Hz):     - corresponds to switching-on of idle economizer valve 600 ± 30 (40 ± 2)   - switching-off of idle economizer valve 800 ± 40 (53,3 ± 2,66)   Exceed of switching-off frequence of idle economizer valve above switching-on frequence (hysteresis), rpm (Hz), not less 200 (6,67)

Connection diagram:

Dimensional drawing: