General information

Microprocessor-based contactless ignition system 1146.3734 (MPBSZ) «JAWA» is a logical continuation of the development of electronic ignition, designed to work in the electrical system of JAWA motorcycles of all models with a 6 or 12 volt generator. The microprocessor ignition software allows you to select the desired mode of the motorcycle engine by connecting the output wires in a certain sequence.
The microprocessor-based contactless system is designed to improve motorcycle performance by:

•    stability and dynamism of the engine due to the function of automatic change of the ignition timing depending on the engine speed;
• reducing the toxicity of exhaust gases, fuel consumption and reducing carbon deposits on candles, due to an increase in the inductive phase of the spark;
• stable engine start when the battery voltage drops;
• reducing the labor intensity in servicing the ignition system with an optical sensor;
• limiting the amount of current and the time of its flow through the primary winding of the ignition coil to protect it from overheating and rapid discharge of the battery.

Specifications

• Nominal supply voltage 6-12V with grounded "minus" of the storage battery.
• The current consumption with the ignition switch on and the engine off does not exceed 0.15 A.
• MPBSZ provides uninterrupted sparking when the voltage in the on-board network changes from 5 V to 16 V.
• The system provides uninterrupted sparking at a crankshaft speed of up to 8000 rpm.
• The ignition system is efficient in the ambient temperature range from -25 to +60 degrees C.
• The microprocessor-based formation of the ignition moment used in the MPBSZ ensures the stable operation of the system in all normal operating modes of the engine.
• This MPBSZ works with standard ignition coils, but provides the best sparking parameters with standard automotive two-electrode coils (4412.3705, 406.3705, 3012.3705, 3022.3705).

Installation and adjustment instructions for MPBSZ are given in the  Operation Manual.