I will begin by explaining what an engine management system is and why it is a bit of an occasional Before the days of programmable engine management, we had carburetors and distributors. The carburetor was there to meet the major demand for air and fuel in the engine, while the distributor was able to do exactly that, distribute the spock to the rot spot club and engine control system, or ECU, a computer. It
's got a bunch of inputs that come into the ECU from the engine, and then it's got a bunch of outputs that go out to the injectors and ignition that's on the engine. From the inputs that come into the ECU, we can choose a wide range of stuff to measure for data logging and a whole bunch of advanced training stuff. However, the centres were required for the engine to run at a temperature, cool temperature, throttle position, and manifold pressure. these five signals coming into the engine management system, it'll know how fast the engineering is turning. the demand, or the load on the engine from the throat opposition and the manifold pressure, as well as the temperature of the corn and the air.
So, with these things, we know enough about the engine and the operating conditions of the engine in order to look at a lookup table of view and dignity, which is set by the tuna. Once we've looked at our fuel and our organisation tables, we know how much fuel and how much ignition timing the china, one of the The last part of the engine management system is to send those signals out to the fuel injectors and the emission system. If we send a signal to the fuel injectors, we'd tell them how much to open and close to allow a certain amount of fuel through, a major amount of fuel through the engine to get our desired or target fuel ratio, or if I have a We send an initial output signal up to our ignition coils to fire that coil, so that a spark occurs at the right time in order to make the most power. so now that we know the engine management system has inputs from the engine, so we know how fast it's going and what temperatures of what load at thunder. We know that it's got outputs that go to control the fuel injectors in the emission system.
tables and lookup tables is a three-day table that's in the engine management system. This is what the tuna are doing when they are training the car. They were just in this lookup table, which is normally based on the engine app, and so we can have as many load points as we want, normally 16 to 32 load points across our rpm operating ranges. On the other hand, on the other access of our three day type, you will have throttle position or manifold pressure, something that references the load that the engineers are under. so if we look at, let's say, fifty percent photo position and four thousand rpm, these two points intersect, and they'll be a number day for our ignition timing.
We might want to fire the emission timing at twenty, thirty, or thirty-five degrees of ignition timing, and we will have a volume metric efficiency, or how efficient the engineers are at that point in time, which allows us to put the right amount of fuel into the engine. At the same time, there are a huge number of these lookup tables in the engine management system, which give it instructions to operate against a wide range of operating conditions from our critical input. Healthy supplies base maps, which are a huge range of these already prayed-for look-up tables, can figure for a lot of different styles of engines and racing types. we can start an engineer with one of these base maps, but then it's up to the tune to tunnel through one of these tables in order to make the most out of your particular engine in your particular application, in your particular area. Keeping in mind that while we've talked about your ECU doing your engine management, it's called an engine management system because it also has a wide range of inputs and outputs for inputs. things like fuel pressure, oil pressure, exhaust temperatures.
If you are able to add critical engine safety stuff, then on the outputs, we can add extra outputs to control things like thermo fans and shift. floods, tackles very well. " You can control all of these sorts of things around your engine management system, which allows you to do all of the engine control in one simple box.
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