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Nitrous oxide

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The whole truth about the nitrous oxide in Russia.

 In the few years that there has been talk of nitrous oxide and its benefits for the acceleration of the vehicle, have questions that are not answered on the internet. The wealth of information translated from other languages, simple but obscure russian racer. I would like to share my years of experience on this topic.

Manufacturers of nitrous oxide.

 So: in Russia oxide produced at the plant "Cherepovets nitrogen," a plant in Ukraine "Tekhnogaz" and "Stirolbiofarm." All nitrous medical, we do not have the technical, it is produced in America, and for the carriage of conventional aircraft is prohibited.

 "Is not it hurt medical nitrous oxide instead of technical my motor?" - Ask a novice racer. And try to drink another glass of alcohol: one glass medical, and the second technical.
Which will you choose?
That's right, technical nitrous oxide also contains additives that its engine would instead not be administered orally, for intoxication his body. Medical nitrous oxide does not contain any additives, but we are interested in its application exclusively in the engine.

 As to whether the installation of nitrous oxide on the race car, how effective it is at 402 meters? What do you think of 50, 100, 200 horsepower will add you an advantage in the race?
Nitrous oxide is not a myth, and drag racing without it would not have been complete. Especially if the car without turbo , you can significantly increase its acceleration using nitrous oxide. Just the system should be properly.
What kind of system is correct and what is not? Try to understand.


Comparable to early American pioneers cylinders nitrous use in racing and bottles of domestic production.


наши родные
Yeah, the visual differences are obvious. The U.S. certainly prettier and lighter (aluminum), but expensive. Our ugly (you can not paint, do not change), but the main drag on the result, not appearance.
 But the most important difference is that the container is imported tube from the bottom of the container to the valve.
Right! It is needed that would apply to liquefied nitrous oxide system. In our tank does not, because it is necessary for medical purposes gaseous, but the desired effect can be achieved by turning the cylinder valve down.
Attention! Installing the cylinder with a pipe on the car sticker is made up! In this case, the cylinder tube turned to the bottom, and delivers the liquefied gas. Improper installation of the container will be fed gaseous nitrous oxide, oxygen content is 500 times less than liquefied.

The liquid nitrous.

краном вниз So why use liquid nitrous oxide Car and gaseous anesthesia for humans. Because We value human lull liquid, it probably will not wake up.
And if the vehicle gas supplied, the effect will undoubtedly because oxygen supplied to the engine will increase, but at high engine revolutions consumes as much air from the atmosphere, this gain has to be imperceptible.

редуктор не нужен So doing wrong.
Setting up the domestic cylinder valve with gear suitable only for medical purposes. By car this improvement has little effect at low revs, and at high almost goes to zero. In drag racing motors are used with high speed and increase torque at low engine speeds is not effective.

 So why are we important liquid nitrous oxide to speed up the engine?
Conventional physics: compare - how many molecules in the gaseous substance, and in the same liquid substance. Well, like water in the form of steam - steam as you need to get a kilogram?
Try to fill a quart jar kilogram of steam. Probably take a lot of effort? And if you fill a quart jar kilogram of water? Easily.
The same can be said about the engine and nitrous oxide. It makes no sense at first substance to evaporate, and then try to push it a little more difficult. It is believed that if the air 21% oxygen, nitrous oxide and 36% - respectively, motor power can be increased by 1.7 times. Yes, it is provided that the engine cutting off the air and deal gaseous nitrous oxide in its pure form. Can you imagine how much air the engine consumes dregovy at 10,000 revs? Let's say the average motor sports at a 13 second race on drag "eats" almost 2 kg of air, or 1500 liters. Reducer is the amount of gas to miss a minute of two, he is not for us.
 Imagine that in the liquid nitrous oxide in oxygen molecules 500 times than in gaseous or 750 times greater than the ambient air? The rest - nitrogen, which helps fight detonation. Nitrous ideal substance to enhance the capacity of the engine.

 More want to say a little about the cylinders of pure oxygen - it is explosive when mixed with oil, and a further temperature combustion gasoline engine melt with oxygen so that it can not be used in the machine, except that the rocket. For comparison, pure oxygen molecules contained 5 times greater than in air, and nitrous oxide in the liquid 750 times!


 Well, with the cylinders figured out what's next?
Nitrous oxide supplied to the engine racing in the liquid form, contains oxygen molecules so that the added capacity can be briefly engine 1000 bhp and more certainly, if the engine durable.

шланг и клапан Nitrous oxide comes from a cylinder, is sent on a special hose, ready to produce something, but rests ... an electric valve (solenoid) that is controlled by toggle switch from the passenger compartment. Better to use a hose with a diameter of 4-5mm, which would be quickly reached the nitrous nozzles, it is made of special material is designed for high pressure and low temperature, usually nylon or special reinforced rubber. You can use a metal tube of suitable diameter.
Next on the system piping should be thinner hose to prevent expansion and gasification. In general, the entire system must be free of voids and extensions that would nitrous ahead of time not to become a gas in a liquid form, it must reach the dispenser.
 That would eliminate to freezing, the gas flow must always go for the restriction. That is the thickest hole should orifice valve and the hose, then the solenoid coil on the tube after the end orifice and, where the process of converting the liquid into a gaseous fraction. If the system is expanding - means possible to freezing the flow of nitrous.

схема Solenoid must be large capacity that would overlap nitrous oxide under high pressure, have no gaskets that can not withstand low temperatures (because the expansion agent creates freezing temperatures).
 Toggle valve open, nitrous oxide through nozzles supplied to the engine ... and boom! The sharp lean mixture, detonation and piston fall out into the tray. Whatever system of nitrous oxide has worked on engine power, must be strictly proportional to the increase of fuel. How is this accomplished?

Imported systems are defined as "dry" and "wet." Both consist of a cylinder which serves nitrous oxide in liquid form in the electrovalve and further through the nozzle into the engine. In the submission of nitrous oxide into the engine is no difference. The only difference is in the supply of additional fuel.

Wet system.

  In the "wet" system, additional fuel is taken from the fuel injector tube. It is there always stable (variable valve-fuel) and a matched jets supplied to the intake manifold of the engine, together with nitrous oxide. Solenoid supply nitrous oxide and supplemental fuel are enabled simultaneously. Solenoid shut-off auxiliary fuel may be a conventional, with petrol-resistant spacers. Wet nitrous oxide system is independent of the air and fuel supply to the engine and adds a certain amount of horsepower from the nozzles for this selection system. With an increase in engine power required replacement of the fuel pump on a more productive, in order to avoid depletion of the working mixture.

If you need to calculate what the jets are necessary for your system, click: Calculating jets

Dry system.

  The "dry" system delivers the liquid nitrous oxide through the selected jets. Additional fuel is fed in different ways: by injection engines used methods such as increasing the fuel pressure in the fuel rail when activating system (using the fuel pressure regulator), cheating the engine ECU with a resistor, creating imitation of frost on the street, thereby increasing the flow of fuel through injector. All of these systems employ palliatives for supplying additional fuel and inefficient.
  The most effective "dry" nitrous oxide delivery system consists of supplying the liquid nitrous oxide and two-proramm firmware ECU (Electronic control unit of the engine.) That is, the engine in the usual rides on the calculated proramm for air, and when the toggle switch nitrous oxide, changes in the computer program, and the fuel supplied to the engine through a larger amount of fuel injectors in accordance with the calculations on the amount of nitrous oxide feed. The fuel injectors in the engine case must necessarily be increased by 500 cc per 100 bhp planned increase of power. So for example if the car VAZ 2112 are 132cc nozzle performance when installing a "dry" system with the addition of 100 bhp must be installed nozzle performance 250cc + fuel pump + high performance two-proramm firmware additional supply of fuel.
  In fact, the correct "dry" nitrous oxide system is not inferior to the power of "wet", but is more complicated to set up, as it requires the programming of the computer and the installation of enlarged injectors.

 Well, that's just about make out the principle of "dry" and "wet" systems. I want to say that the increase of power is carried out on the same amount of horsepower at all engine speeds, and regardless of its size. Power system nitrous oxide depends on the size of selected nozzles. A couple of jets can put one on the entire intake manifold of the engine, but you can on each cylinder separately. In the second case, increasing the efficiency.
 When you install more than 100 bhp requires the forged pistons, connecting rods, the strengthening of the engine block. Do not forget the fuel pump increased productivity.

Installation of nitrous oxide on the Lada VAZ.

мокрая система Would look like the "wet" system on VAZ 2112 with a distributed feed on each cylinder. Note - the fuel is supplied to the valve on the fuel line hose. Tube with red-tipped fuel supply to the nozzles, with blue-nitrous oxide. Reinforced hose goes to the tank. All components of the system of nitrous visible in the photo, except the Bottle. 2 solenoid injectors 4, 2 splitter (one for the supply of fuel to the injectors, the other on the supply of nitrous).

Nozzles and jets.

форсунка сухой системы It looks nozzle for supplying nitrogen oxide "dry" system. It is screwed into the engine of collectors, top nozzle is inserted and twisted tube.

форсунка мокрой системы It looks like injector for "wet" system. Figure 1 shows the hole where the nozzle is inserted into selected for nitrous oxide, the number 2 - for fuel. Both jet also curled on top tubes.

распылитель Shows a spray nozzle tip, nitrous oxide and fuel output different channels and mixed directly into the intake manifold.

жиклёры Jets to adjust the capacity of the system.

жиклёры Here is the setting selected nozzles in the spray nozzle.

Warmer bottle.

 Warmer bottle is used to maintain uniform gas temperature and accordingly, a stable system operation. When calculating the jet flow nitrous we podrazumemevaem that the temperature of the balloon 20 °C, and the pressure in the cylinder 51 bar. We select jets, test the machine - everything works fine. We came to the race, and in the morning is something colder, and the temperature outside is 10. The pressure in the tank is not 51 bar, and 40. A mixture of nitrous fuel is fed enriched, and the desired power failed. And even worse when it's hot, set up the system with the expectation of 20 °C and 35 °C on the street. Then the pressure in the tank will jump to 72 bar, and a lean mixture can cause detonation, that the worst thing for the engine. Below is a table of pressure in the tank of nitrous on the ambient temperature.

Bulb temperature --- pressure in the bottle
 (Celsius) ---------- (bar)
       -34 ---------- 11,5
    -29 ---------- 14
       -23 ---------- 16,5
       -18 ---------- 19,5
    -12 ---------- 23
      - 6 ---------- 26,7
        0 ---------- 31,7
     4 ---------- 36
       10 ---------- 40,7
       15 ---------- 46,5
       21 ---------- 52,4
       27 ---------- 59,7
       36 ---------- 73,7

 So the warmer it is useful attribute, for example by setting it in a constant temperature, for example 30°C, and picking up the appropriate jets, you can not worry about the temperature drops outside. Your nitrous system will always work stably.

Remember that nitrous oxide - a gas with a critical temperature of 36,5 ° C, its critical pressure - 72.6 bar.

Undesirable privyshat these settings if you have an aluminum can - may explode, and indeed ordinary lighter or deodorant. To avoid blowing up the balloon serves as safety valve for 80 bar.

Nitrous oxide for turbocharged engines.

 Is it possible to use "wet" systems for engines with high turbo boost? Is it too much power to be at high speed?
 On engines with a high degree of turbo when the pressure turbine is used for engine speeds above average, nitrous system is very useful. A large turbine spins at high engine speeds and at low speeds does not create pressure, and the engine runs as atmospheric. This is called turbo lag. Nitrous system is the best suited for what would remove turbo lag quickly unwind and let the engine until it starts turbocharging.
датчик давления For example we put on turbo nitrous system capacity of 100 bhp. Turn the toggle switch activation (the system does not work, because the micro switch on the throttle not included), involving the transmission, touch it, push the gas completely, nitrous went into the engine, the sharp increase of power, the engine is gaining momentum above the average, in the case turned on the turbine...
And at that point, nitrous oxide should stop now, to avoid detonation, providing further increase the power turbine. Shutdown system is a special pressure sensor, for example triggered by the achievement of 1,5 bar in the intake of collectors engine.

Modern systems of nitrous oxide.

схема закись+воздух  Progress does not stand still, so to replace the systems which use metering nozzles, and a warmer bottle, come better and give a stable result.

For example system shown in the figure shows the constant pressure of the nitrous bottle, no warmer bottle. This is achieved by using an additional cylinder in which the air under high pressure. This air is supplied to the cylinder oxide by a gear which supports a stable pressure, for instance 70 bar.

Air enters from the pressure regulator through the hole in the cylinder oxide, pushing the first liquefied gas, thereby providing the same pressure regardless of the ambient temperature and use heaters.

This system uses the command will "Lukoil Racing" on its dregster Lada 2110.

There are also examples of systems of nitrous oxide in which there are no orifices described in the previous systems, and controls supply of nitrous ECU.


 Of safety would like to note the following:
1) If you include nitrous oxide with the engine off, do not start it after that, will have a blast in of collectors. Otsoedenite wires from the ignition module and rotate the motor starter that would work out mix.
2) Do not operate the system after the "fuel cut-off" injection engine.

 Well, that's all for now. Push the toggle switch ... and enjoy your speed.

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