5 A Tipos de bobina de encendido
Types of Ignition Coils
Overview of Ignition Coil Types
- There are various types of ignition coils, but they all function similarly. The first type was the "bottle" coil.
- While designs may vary, the internal operation remains consistent: each coil has a positive and negative winding that is interrupted to create a spark.
Functionality of Different Coils
- Some coils integrate an ignition module at the base, which processes signals from a pickup inside the distributor to control the coil's negative side.
- The ignition module acts as a direct input controller for the coil, ensuring it receives both positive and negative signals correctly.
Evolution of Ignition Systems
- The "distributor" system followed after earlier models like the bottle and carburetor systems. This system uses one coil to fire two cylinders simultaneously.
- In this setup, while one cylinder is in compression, its companion cylinder is in exhaust; thus, one spark may be wasted during exhaust.
Cost Efficiency in Design
- By firing two cylinders with one coil, manufacturers save costs despite potentially wasting sparks during certain cycles. A deeper exploration into this system will follow later.
Modern Coil Designs
Latest Innovations in Coil Technology
- The latest type includes "caps" coils which have specific configurations requiring careful handling due to their design differences.
- Notably, some modern vehicles (Ford, Chrysler, Mercedes Benz, Volkswagen) use three-pin coils where transistors are external rather than integrated within the coil itself.
Identifying Coil Specifications