General information:

Ignition controller with internal idle economizer control unit (IECU) 1103.3734 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.

Applicability: "Tavria", "Slavuta" beginning from November 2001 year of manufacture, "SENS" (carburettor).

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 on a single-wire power circuit, the unit housing is connected to the vehicle housing. The unit 1103.3734 operates together with an ignition coil of type 40.3705, 27.3705, 3122.3705 or any other with analogous parameters and is controled by a signal of Hall effect sensor, built-in in the allocator. An operating mode of the unit in accordance with GOST 3940 is continuous nominal S1.

The unit plug is analogous to plugs of ignition controllers 3620.3734, 3640.3734, 0529.3734, 0729.3734. The outputs are designed in such a way that it is permited the use of the unit instead of the ignition controller on automobiles where ignition controllers 3620.3734, 3640.3734, 0529.3734, 0729.3734 and other are applied. Thus control functions of internal idle economizer control unit are performed by the standard IECU and the unit performes only functions of the ignition controller. For this aim it is necessary to connect pins 2 and 3 of the standard ignition controller plug.

The unit 1103.3734 is mounted on a stipulated for it setting in the vehicle with the help of standard fastenings and a standard plug.

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 of the 4-cycle 4-cylinder engine 20 .. 7000   Commutating current, А 7,0 ± 0,2   Time of a sparkless cutoff of a collector current, sec 1 .. 2   Rotation frequence of crankshaft of 4-cycle 4-cylinder engine corresponds:     - switching-on of idle economizer valve, rpm (Hz) 1900 ± 96 (65,0 ± 3,2)   - switching-off of idle economizer valve, rpm (Hz) 2150 ± 105 (71,66 ± 3,53)   Exceed of switching-off frequence of idle economizer valve above switching-on frequence (hysteresis), not less, rpm (Hz) 200 (6,67)

Connection diagram:

Dimensional drawing: