breaker point
Noun: A breaker point is a mechanical switch, historically found within the distributor of an internal combustion engine's ignition system. It consists of a set of electrical contacts that open and close to interrupt the current flowing to the ignition coil, thereby generating the high-voltage spark needed to ignite the fuel-air mixture in the engine's cylinders.
The term breaker point is used specifically in the context of automotive engineering and mechanics, particularly when discussing older vehicle ignition systems. It refers to the physical component itself and its function.
Examples: * The engine misfired because the breaker points were worn and needed adjustment. * In classic car maintenance, knowing how to set the breaker point gap is an essential skill. * Modern electronic ignition systems have largely replaced the need for breaker points.
- Set the points / Gap the points: Common phrases meaning to adjust the precise distance between the open contacts of the breaker point, a critical maintenance task for proper engine timing.
- The mechanic used a feeler gauge to gap the points correctly.
- Contact points or simply points: Common shorter synonyms for breaker points.
- Distributor: The assembly that houses the breaker points and rotor, directing the high-voltage current to the correct spark plug.
- Ignition points: Another synonymous term.
- Contact points
- Ignition points
- Points (in automotive context)
- Point ignition system: The type of ignition system that uses breaker points.
- Dwell angle: The number of degrees the distributor cam rotates while the breaker points remain closed.
- a contact in the distributor; as the rotor turns its projecting arm contacts them and current flows to the spark plugs