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Variable Cam Control Tuning: System Configuration

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System Configuration


00:00 - By now you should have a good idea of how cam control works and how the system is controlled by the ECU as well as what you're trying to achieve.
00:08 There's been a lot of information to take in though and this information alone doesn't necessarily tell you how to do about setting up and optimising the cam control system.
00:18 That's what this next set of modules is designed to do.
00:21 What we've done is broken the entire process down into a simple 5 step process that you can apply irrespective of the type of engine you're tuning, regardless whether it's a simple fixed cam engine with vernier cam gears or a quad cam engine with variable cam control on all 4 cams.
00:38 Obviously there are some variations in how this process is applied depending on exactly what style of engine you're tuning but we'll cover these as we progress.
00:48 With that being said, our very first step is to configure the system.
00:52 It seems simple and obvious but so often this step is overlooked which can waste a lot of time further down the track, diagnosing why the cam control isn't functioning as you'd expect.
01:03 The workflow here will depend on your cam style.
01:06 For example if you're running fixed cams with vernier cam gears then there's obviously no interaction with the ECU so on face value there's nothing to do here.
01:16 Even while this style of cam tuning has no direct interaction with the ECU, it's still advisable to start from a known cam position.
01:24 In other words the cams should be dialled in or degreed to the cam supplier's recommendations so we know where we're starting from.
01:31 It's also worth having a solid understanding of how much you can move the cam timing before you risk mechanical contact.
01:39 With continuous cam control systems we have a little more work to do and this will involve configuring the ECU so that it's able to correctly decode the trigger and cam position information for each of the cams being controlled.
01:52 Every ECU will have its own procedure for doing this and we'll cover this more specifically in the worked example library.
01:58 We also need to configure and test the output or outputs that will be used to actually control the cam movement.
02:06 It's important to choose a suitable operating frequency for these actuators so that they can produce the fast and accurate cam movements we need.
02:14 Every engine and actuator will ​be a little different but as we discussed earlier in the course, generally you'll find that the frequencies will be in the range of 200 to 300 Hz and this should work well for most applications.