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Parts Microswitch Switches
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When you want more power for your car you have a variety of ways of accomplishing this. If you have seen the movie "The Fast and the Furious", you saw one way. It was called NOS or Nitrous Oxide. The chemical formula is N2O, or two atoms of Nitrogen and one atom of Oxygen.
Inside your car engine there is a mixture of air and fuel which burns very rapidly and creates power. It's the oxygen in the air that allows the fuel to burn. If you can put more oxygen, and a corresponding amount of fuel, in the engine you get more power. And this can be a 50% increase in horsepower. The NOS system supplies both more oxygen, and allows more fuel.
Why choose this approach versus something like a supercharger or turbocharger? The key reason is that it's relatively cheap compared to those approaches. A NOS system consists of a bottle or tank of compressed NOS, in a liquid form, a NOS solenoid, a fuel solenoid, a toggle switch, some tubing along with a typically nylon pipe, a distribution block, a fogger, some jets, and a second switch for the throttle position.
Another key advantage is that once the system has been installed and used, it can still be removed and reinstalled on another vehicle. You can't really do that very easily with a supercharger or turbocharger.
How does all of this equipment now work? First you mount the NOS tank usually in the trunk, at a 15degree angle so that all of the NOS will flow correctly. You use some high pressure nylon or steel braided tubing to connect the NOS tank to a solenoid near the engine. You have fuel running through another line going to the fuel solenoid. Both solenoids will be triggered by electric switches. It is important to trigger both the NOS flow and the fuel flow at the same time, so the same ratio is maintained. Both of the solenoids are connected with more high pressure nylon or sometimes with a Teflon internal lined braided steel pipe to a nitrous injector by the intake manifold. The nitrous injector has a couple of small jets, one for the fuel and the other for the nitrous. One of the two switches is used by the driver to turn on the two solenoids. However, nitrous should only be used on an engine that is going wide open, as introducing this extra power on a partially wide open engine could damage it. So the second switch is a micro switch that is mounted on the accelerator linkage and can be triggered only at full throttle. This is the basic system.
However there are a couple of extra parts that are sometimes used. One can be an oil pressure switch which will not trigger until it senses that there is oil pressure which indicates that the engine is indeed running. You don't want an accidental discharge when the engine is off. We mentioned that the nitrous and fuel mixture must be in a constant ratio. Sometimes you would need an electric fuel pump and fuel regulator to insure that the correct amount of fuel is being delivered.
Dennis Dater has been involved with cars for over 50 years. His web site is dedicated to selling Honda Accord aftermarket parts.
Sorting Out Your Sump Pump Switch
No sump pump system can work without a sump pump switch. This simple but very useful mechanical device, which usually comes with a floater, is fabricated to trigger your sump pump into action when the water in the sump pit reaches a certain level. The switch is able to detect it because of the floater.
The sump pump switch comes in several types. Most installations use a microswitch that is attached to a rod, to which, in turn, the floater is attached. This type is called the vertical switch. When the water level in the pit rises, the floater rises with it, lifting the rod with it. This action turns off the electric circuit and signals the motor to start pumping out water. When the water level goes back down, the floater and the rod sinks, signaling the motor to stop pumping.
Another type of switch is called the wide angle float switch. This type uses a cord attached to the floater to turn on the switch. As the water level rises, the floater rises until the cord is tight enough to pull the switch.
Some switches are designed to activate on two stages: the first stage activates the pump while the second stage, which occurs when the water doesn't stop seeping into the sump pit, sets off an alarm or a back-up sump pump.
There are other setups that are fitted with two float switches: one is attached to the pump and the other, which is preset at a higher level, activates an alarm. This type of installation warns the owner of the house of an impending basement disaster when the sump pump fails and does not pump water on the signal of the first floater. The second floater is usually set at about two inches higher than the first, so the owner has enough time to act before it floods.
While sump pump float switches operate in a simple way and are easy to install and replace, they are not fail safe. Sometimes, the system fails because of a simple yet undetected switch problem, such as it getting stuck and restricted from moving freely with the water level, or the switch being "fooled" by debris and deposits that have accumulated in the sump pit bottom. Sometimes, sump switches simply stop working, causing the motor to continue running until it's worn out. Extra care should be taken when monitoring the condition of the switches to make sure the entire system is efficiently working. Unfortunately, while its simple design works to its advantage, float switches are not repairable most of the time. The only way to address problems is to replace the sump pump switch altogether.
About the Author
The secret to an efficient and successful sump pump system is a working sump pump switch. There are other more sophisticated and modern sump pump switches that you can buy from your local hardware, which are claimed to be more reliable than the good old float switch. But for those who want something simple that works, the float switch is always the better choice.
More information about sump pumps can be found at http://www.sumppumphelp.com/
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