Smart vs Dumb Coils - EFI Discussion & Demonstration скачать в хорошем качестве

Smart vs Dumb Coils - EFI Discussion & Demonstration

In this video we review the 2 different types of ignition coils used on most gasoline engines, commonly referred to as "Smart" and "Dumb" coils. The main difference is that a Smart Coil can be triggered or commanded directly by the Engine computer (a Speeduino in this case) which typically outputs a 0-5 VDC square wave. The smart coil can interpret this signal, and can directly fire the spark plug. This saves on wiring, complexity and the amount of hardware needed. A Dumb coil cannot be driven directly by the ECU. It requires a driver of some sort, also known as an igniter. This device interprets the ECU low voltage, low current digital command and then controls the 12 volt coil to fire the spark plug. Another way of thinking about the Coil Driver/ignitor is that it is basically serving the same function that a set of points was doing on older engines that used a points and condenser type distributor. We discuss: The differences between the 2 types How to identify them How they work How to wire them Ignition Coil Ignitor / Igniter / Driver Why one is needed How to wire them Where to find them Common coil operating configurations Plug wires vs Coil on plug How the ECU communicates and interacts with the Ignition Coil(s) We also discuss how to configure a distributor type ignition system to run with a Speedunio. This information is also applicable to other types of ECUs, DIY electronic fuel injection systems and most engines. We then perform a bench top demonstration of a Small Block Ford 302 V8 distributor style ignition system being driven by a Speeduino NO2C