So, todays ignition systems, are more complex than ever before.

But, with less moving parts and more electronics, they have become, state of the art.

Over time some parts were eliminated, others were added, while others stayed pretty much the same.

Firstly, for ignition systems to operate, they must be capable of doing, two very important jobs, at the same time:

  1. Firstly, to increase the voltage, from the 12.4 volts provided by the battery. Subsequently, to the more than 20,000 volts, needed to ignite the air/fuel mixture.
  2. Secondly, to ensure that the voltage is delivered, to the right cylinder at the right time.

But, to perform optimally, the system must work, together, with the rest of the engine.

So, the goal is, to ignite the fuel, at exactly the right time. Because, if the system provides a spark, at the wrong time, the engine will produce less power. As a result, needing more fuel, to travel the same distance.

So, most engines today use, a distributorless system or a direct-ignition system.

The major parts of these systems are:

  • Coils
  • Ignition module
  • Crankshaft reluctor ring
  • Magnetic sensor
  • Electronic control module

The Four Types Of Ignition Systems Are:

1. Conventional Breaker-Point

So, the conventional breaker-point system, is the oldest type of system.

2. High Energy (Electronic) Ignition System

So, after years of using conventional breaker-point ignition, manufacturers turned to a more advanced, high energy ignition system. Consequently. this system replaces the breaker points and condenser, with a transistorized switch within an ignition module.

3. Distributor-less (Waste Spark)

So, knowing the potential issues associated with a conventional distributor, this (DIS) system eliminates the distributor entirely. Instead, multiple ignition coils are used, one for each pair of cylinders. Using engine sensors to determine crankshaft and camshaft position, an (ECU) triggers the appropriate coil. And, directs the distribution of electrical current to the spark plugs.

4. Coil-on-Plug (Direct)

Above all, the most sophisticated of all ignitions systems. Because, this system places an ignition coil, directly on the top of each spark plug. All of the timing is handled by the (ECU), based on input from various sensors. Because, each spark plug has its own dedicated coil, high-voltage spark plug wires, are completely eliminated.

Choose Your Help Topic Below

Ignition Coils – Take Low Battery Voltage, Then Amplify It

Primary Ignition System, Battery, Low Voltage Side Of The Circuit

Secondary Ignition System, Spark, High Voltage Side Of The Circuit

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