SEAL-RING 5K4500 - Caterpillar

The components of the gas engine ignition group and the fully shielded ignition system wiring are used with the CIS in order to provide spark ignition.Ignition Transformer
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Components Of The Gas Engine Ignition Group (1) High energy ignition transformer. (2) Tube. (3) Extension with a spring loaded rod. (4) Spark plug.The ignition transformer causes an increase of the primary voltage. The increased voltage is needed to send a spark (secondary electrical impulse) across the electrodes of the spark plugs. For good operation, the connections (terminals) must be clean and tight. The negative transformer terminals for each transformer are connected together and the terminals are connected to ground.Timing Control System
The Caterpillar Detonation Sensitive Timing Control (DSTC) system provides detonation protection for the engine and electronic adjustment of ignition timing with a variable timing. This ignition system consists of four basic groups.
Timing Control Module
Ignition Control
Detonation Mixing Control (DMC) System
Sensors
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Timing Control SystemTiming Control Module (TCM)
The TCM determines the ignition timing. The TCM communicates the ignition timing with the Ignition Control. The TCM provides the system diagnostics.Engine timing, controlled by the TCM, is based upon the desired timing signal received from the ECM. The desired timing signal from the ECM varies depending on engine speed, engine load and engine detonation.The ignition timing is controlled by three signals that are sent from the TCM to the Ignition Control. The Ignition Control sends a signal that indicates that the plug is firing to the TCM. The TCM uses this signal to calculate actual engine timing.Caterpillar Ignition System (CIS)
The Caterpillar Ignition System has been designed for gas engine applications in conjunction with the TCM. The ignition system is intended to replace both the magneto and the magneto interface box. The existing ignition coils and the wire connection to the TCM are still utilized. The addition of a Cam Position Sensor and a trigger magnet are required as a cycle trigger. The sensor and the magnet are installed on the cam at the oil mist drive location at the front right hand side of the engine. New features include advanced spark control, spark diagnostics, self-diagnostics, diagnostics, sensor diagnostics and serial port communications. The system consists of two main parts: The engine mounted ignition control module and the remote mounted optional user interface display module. The system requires 24 VDC at 5 amp nominal for typical application.Note: The ignition system must be configured prior to use on an engine. All components from the factory and parts departments are properly configured for your engine. Ensure that you have the correct part number for your application.Ignition Control ModuleThe ignition control module is equipped with a 16 position manual timing switch in the output module and a start-up retard that is adjustable via the terminal software. The maximum allowable ambient temperature exposure of the control module is 65.5°C (150°F) .The manual timing switch affects the timing that is reported to the TCM during the engine crank, or while in the "MAG CAL" mode. The ignition