The expanded components exert pressure on the pistons, which then drives the engine. Tanks store nitrous oxide in its liquid state. In normal atmospheric conditions, it turns to gas. It is normal with drivers before getting to the starting line. The purge system, once activated, make plumes of nitrous oxide visible for a short while as the liquid changes to a gas. The nitrous purge ensures that the right levels of nitrous oxide are injected.
Injecting nitrous oxide adds more fuel to the engine and is a simple way to boost your car's engine power output without having to tweak it.
The two types of nitrous systems are dry and wet, depending on the method used in delivering nitrous oxide into the intake manifold. There are four conventional delivery methods:. The majority of nitrous systems make use of particular orifice inserts jets and pressure calculations to deliver the desired amount of the gas and create an efficient air-fuel-ratio for the boost required.
Here are the two types of nitrous systems:. Only nitrous oxide is delivered by the nitrous delivery method, which injects fuel through a separate channel, the fuel injector. Two ways to increase the amount of fuel flow - by increasing the pressure and by increasing the time that the fuel injector is open. Although this system uses a single nozzle delivery method, it is possible to use the other methods.
Carburetors are not capable of producing a high amount of on-demand fuel, and for this reason, you cannot use a dry nitrous system in carburetted applications. If you're cheap and looking for quick and easy horsepower, then nitrous oxide might be for you.
No other way are you going to be able to add more than hp for less than a thousand bucks, all in an afternoon's work. Installing a nitrous system might not take a whole lot of time, but that doesn't mean any bonehead with his own set of wrenches is up for the job. Calibrate those jets wrong or drill and tap for those nozzles like you've never done it before, for instance, and you could be down a whole lot of power or end up with an expensive pile of scrap metal.
Use your head, though, install your system thoughtfully, be realistic when it comes to power goals, and your nitrous-induced engine can last for years. The Cons - Easy to abuse - Doesn't last forever - Bottle pressure and temperature must be maintained.
It'll blow the welds off my intake manifold: Not necessarily. With the right amount of fuel accompanying all of this, nitrous oxide injection doesn't present a whole lot more wear on an engine than a turbo system would. It's flammable: Except that it isn't. By definition, N2O can't burn, but its oxygen molecule can aid the combustion process once released, which is what makes all of this work. Fast and Furious, you lied to us! Thus, purging is necessary before use to ensure that only gas is being injected.
The reliability of the setup will depend on the tuning as well as the physical components. To avoid unwanted nitrous from leaking into the system, a check valve or solenoid is a valuable addition to avoid the aforementioned issues that come with failure to purge, but purging is still recommended. In any case, the reliability of an engine with a nitrous system is not great, even if the NOS system itself is working fine, which is why airplanes switched to turbochargers in the early 20th century.
This will depend on the application, but each has its benefits and drawbacks. For example, a system that works well on a carburetted V8 may not provide the gains you were hoping for in a turbocharged four-cylinder engine. Thus, it is always best to do research on your specific platform. This varies from brand to brand and depends on the size of the canister too. It helps to weigh the bottle before getting it refilled to ensure that you are not being overcharged.
Read in this article:. How Does Nitrous Oxide Work? Types of Nitrous Systems There are two main ways of injecting nitrous oxide into the engine, but each has the same goal of increasing density and forcing more power out of an engine, whether it be a gasoline engine or a diesel-powered one.
These are the most common types of nitrous systems used: Wet injection: A wet nitrous kit sees the nitrous oxide injected into the combustion chamber simultaneously with additional gasoline or other fuel through the same plate or nozzle that supplies the fuel.
This mixture is called 'wet' because it mixes with the extra fuel that comes from a separate fuel pump, alongside the existing fuel injection system. A wet system is typically used on carburetted engines, but as a relatively simple way of getting the nitrous into the combustion chamber with minimal modifications, it is popular on regular EFI electronic fuel injection systems too.
The size of the plate or nozzle will determine how rich the mixture is when it enters the combustion chamber. Dry injection: This system works by using the existing fuelling system either carburetted or fuel injected , to supply the gas or diesel while the nitrous is injected into the intake separately. This means that the plate or nozzle the latter is also known as a jet only supplies nitrous oxide and does not mix with regular fuel until in the combustion chamber. Here, just as with the wet system, a switch is used to activate the system, but the amount of N2O is controlled by either the fuel injection controller or the ECU, allowing the EFI system to calculate when to spray and how much to inject.
More advanced nitrous oxide injection systems can make this N2O injection progressively greater or progressively lesser. For example, if you are using nitrous to speed up the rate at which your enormous aftermarket turbo spools up, you will not need as much or any nitrous as you get to higher rpm. This means more oxygen is produced for combustion, allowing the engine to produce more power in the process. Is NOS street legal? Nitrous oxide systems, also known as NOS, may be permitted for use depending on local city regulations.
NOS is legal to use in some classes of auto sports. Does nitrous damage your engine? Using high-quality nitrous that's been fitted correctly and according to the requirements of your car should be safe for the engine and will not cause the engine to overheat or explode. How do you apply nitrous to a car? You will first need to find the safest place to mount the nitrous bottle. You will then have to install a nitrous line by removing the carburetor and setting up the nitrous plate.
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