**Understanding Anti-Load Systems**
To grasp the intricacies of anti-load systems, it's essential to comprehend the basics first. The two videos on turbo lag and anti-ag systems provide valuable insights that will serve as the foundation for understanding everything discussed in this topic.
As we delve into the world of anti-load systems, let's start by examining how they work with the inlet bypass valve. When you're in third gear and flooring it, preparing to brake and take a corner, you let off the gas pedal. This action triggers a series of events that ultimately result in the engine retaining boost pressure.
The throttle closure initiates the sequence, as the air being pushed through the throttle is suddenly cut off. The buildup of exhaust gases at high RPMs creates pressure that needs to be released. This pressure pushes against a spring valve, compressing it and allowing air to flow into the system. The ECU takes notice of this change and instructs the solenoid to open the bypass valve. This valve opens up, allowing air to bypass the engine entirely, as indicated in the diagram.
The bypassed air flows into the exhaust manifold, where it meets with the fuel being injected by the ECU. The mixture is rich due to the low air-fuel ratio, and not all of this fuel can be burned efficiently within the engine's cylinders. As a result, the majority of the fuel is expelled into the exhaust system.
The high-pressure, hot exhaust manifold becomes a catalyst for combustion, which drives the turbocharger at the same RPMs as before. While this may seem beneficial, it also poses significant risks to both the engine and the turbocharger themselves.
**Engine and Turbocharger Risks**
One of the primary concerns with anti-load systems is the increased stress on the exhaust manifold and turbocharger. The combustion occurring in these areas can lead to premature wear and tear, necessitating frequent replacements. This highlights the importance of designing anti-load systems that prioritize durability while still achieving the desired performance benefits.
The second concern relates to engine braking. As anti-load systems rely on bypassed air flowing into the exhaust manifold to drive the turbocharger, they also eliminate the ability for the engine to use its own braking power. While this may not be a significant issue in certain applications, it's essential to consider the broader implications of such systems.
**The Anti-Load System in Action**
Now that we understand how anti-load systems work, let's examine the process in more detail. When you close the throttle and release the gas pedal, the pressure forces open the spring valve. The ECU responds by opening the solenoid-activated bypass valve, allowing air to bypass the engine entirely.
As a result, the engine continues to produce exhaust gases at an elevated rate, which is then directed into the exhaust manifold. This creates an environment conducive to combustion, driving the turbocharger and maintaining boost pressure throughout the engine's operation.
The anti-load system serves as a vital component in managing the engine's performance during periods of high RPM and load. By bypassing air through the exhaust manifold, it enables the retention of boost pressure while minimizing the drawbacks associated with traditional turbocharging methods. However, this comes with significant trade-offs, including increased wear on critical components and a reduction in engine braking capabilities.
In conclusion, anti-load systems offer an innovative solution for managing turbocharger behavior during various driving conditions. While they present unique challenges, such as increased stress on exhaust manifold and turbocharger components, their benefits are undeniable. By understanding how these systems work and the factors that influence their performance, drivers can make informed decisions about when to utilize them and how to optimize their use.
"WEBVTTKind: captionsLanguage: enhello everyone and welcome to this week's video today I will be explaining antiag systems once again I'm going to go through a second kind of uh anti-ag system which uses an inlet bypass valve and so three things right off the bat that you should watch before watching this turbochargers uh turbo lag and my other video on anti-ag systems those give you the good Basics that you will need in order to understand everything in this so that's where I recommend starting I'm I'll throw some anotations in there so you can get right to those before watching this so how does the anti-ock system work uh with the inlet bypass uh what's going on here so what we've got going on is okay you're you're in let's say third gear you're flooring it and you're about to let off the gas and break and go into a corner so you let off the gas and you want to keep your turbo spooled so that when you get back in gear um say you're going to go down to first gear that you already have your turbo spooled up you don't have to worry about that you've already got power well what happens all right so you've got your Strokes occurring like usual your fourstroke engine uh and you let off the gas so what happens is when you let off the gas that throttle closes so you've got all this air that was going right through your throttle but now you've let off the gas so obviously the throttle's closed well you've got that buildup of pressure because you were at a high RPM you're producing a ton of exhaust so that was fooling out your turbine and so you had a good amount of boost well all that pressure needs to go somewhere so where it goes is you've got this uh spring valve right here so the pressure pushes up against that push compresses that spring and allows air to flow in here so the air is flowing in here and then your ECU is like hey we need to open this valve so it opens up this is uh controlled with a solenoid and it opens up this valve which allows air to bypass the engine so the air comes all the way through this line bypassing the engine and comes out here into the exhaust manifold well why would it do that all right so what do we have going on in the engine so when you close the throttle you're not going to have much air going into the engine but your ECU is going to tell your fuel injectors to spray a ton of fuel in there so you're going to have a very rich mixture of fuel uh very low um air fuel ratio so what that means is is you will not be able to burn all the fuel that's in there so it'll burn enough to keep the engine going but then it's going to be throwing some of that fuel into the exhaust actually the majority of it because it's not burning very much so once that fuel hits uh goes into in your exhaust stroke once that fuel comes into your exhaust manifold well it's going to meet with that air and the exhaust manifold is going to be very hot from uh you know you've been driving and so you've got all this uh pressure going through it all this Heat going through it from combustion so your exhaust manifold is already very hot it's going to in turn combust all of this uh this air fuel mixture and that explosion is going to keep driving your turbocharger so with that you've got the high pressure the high temperature you've got an explosion occurring in your exhaust manifold yes it's not very good for your engine uh so but it will keep your turbocharger uh spooling at the exact same uh RPM if not if not you know slightly worse or slightly better so point is you will keep boost and also you can have a very loud fire spitting car which everyone wants right uh but what is the downside well obviously if you have combustion occurring in your exhaust manifold rather than your cylinders which were designed for combustion uh you're going to have some problems with your exhaust manifolds but really has to be reinforced to be able to withstand these pressures and stresses and temperatures that you're thr throwing into it uh same with your uh turbocharger you've got fire going through your turbocharger what do you think that does for the temperature well it brings it way up um so you are you're going to need to replace this kind of frequently if you're going to put in an anti-ag system like this um one uh another downside is you will lose your engine braking but as I mentioned in the in the previous video that's really not too important for these kind of applications um but that's how it works it all just works with these two little valves here here you close the throttle the pressure forces open this spring the engine says open up this valve it allows the air to pass through the engine the engine's got a ton of fuel going in it so you bring that fuel into the exhaust manifold with the air they mix up explode and they keep that turbo running and you have constant uh boost well not constant but you know you keep boost the entire time you're driving so the goal is achievedhello everyone and welcome to this week's video today I will be explaining antiag systems once again I'm going to go through a second kind of uh anti-ag system which uses an inlet bypass valve and so three things right off the bat that you should watch before watching this turbochargers uh turbo lag and my other video on anti-ag systems those give you the good Basics that you will need in order to understand everything in this so that's where I recommend starting I'm I'll throw some anotations in there so you can get right to those before watching this so how does the anti-ock system work uh with the inlet bypass uh what's going on here so what we've got going on is okay you're you're in let's say third gear you're flooring it and you're about to let off the gas and break and go into a corner so you let off the gas and you want to keep your turbo spooled so that when you get back in gear um say you're going to go down to first gear that you already have your turbo spooled up you don't have to worry about that you've already got power well what happens all right so you've got your Strokes occurring like usual your fourstroke engine uh and you let off the gas so what happens is when you let off the gas that throttle closes so you've got all this air that was going right through your throttle but now you've let off the gas so obviously the throttle's closed well you've got that buildup of pressure because you were at a high RPM you're producing a ton of exhaust so that was fooling out your turbine and so you had a good amount of boost well all that pressure needs to go somewhere so where it goes is you've got this uh spring valve right here so the pressure pushes up against that push compresses that spring and allows air to flow in here so the air is flowing in here and then your ECU is like hey we need to open this valve so it opens up this is uh controlled with a solenoid and it opens up this valve which allows air to bypass the engine so the air comes all the way through this line bypassing the engine and comes out here into the exhaust manifold well why would it do that all right so what do we have going on in the engine so when you close the throttle you're not going to have much air going into the engine but your ECU is going to tell your fuel injectors to spray a ton of fuel in there so you're going to have a very rich mixture of fuel uh very low um air fuel ratio so what that means is is you will not be able to burn all the fuel that's in there so it'll burn enough to keep the engine going but then it's going to be throwing some of that fuel into the exhaust actually the majority of it because it's not burning very much so once that fuel hits uh goes into in your exhaust stroke once that fuel comes into your exhaust manifold well it's going to meet with that air and the exhaust manifold is going to be very hot from uh you know you've been driving and so you've got all this uh pressure going through it all this Heat going through it from combustion so your exhaust manifold is already very hot it's going to in turn combust all of this uh this air fuel mixture and that explosion is going to keep driving your turbocharger so with that you've got the high pressure the high temperature you've got an explosion occurring in your exhaust manifold yes it's not very good for your engine uh so but it will keep your turbocharger uh spooling at the exact same uh RPM if not if not you know slightly worse or slightly better so point is you will keep boost and also you can have a very loud fire spitting car which everyone wants right uh but what is the downside well obviously if you have combustion occurring in your exhaust manifold rather than your cylinders which were designed for combustion uh you're going to have some problems with your exhaust manifolds but really has to be reinforced to be able to withstand these pressures and stresses and temperatures that you're thr throwing into it uh same with your uh turbocharger you've got fire going through your turbocharger what do you think that does for the temperature well it brings it way up um so you are you're going to need to replace this kind of frequently if you're going to put in an anti-ag system like this um one uh another downside is you will lose your engine braking but as I mentioned in the in the previous video that's really not too important for these kind of applications um but that's how it works it all just works with these two little valves here here you close the throttle the pressure forces open this spring the engine says open up this valve it allows the air to pass through the engine the engine's got a ton of fuel going in it so you bring that fuel into the exhaust manifold with the air they mix up explode and they keep that turbo running and you have constant uh boost well not constant but you know you keep boost the entire time you're driving so the goal is achieved\n"
