Ad
related to: how float valve works
Search results
Results from the WOW.Com Content Network
A float chamber works by allowing liquid within the chamber to lift a float which is linked to a valve which regulates the liquid intake. When the level is low, the float drops and opens the valve, allowing in liquid until the float rises sufficiently to close off the valve again. This is identical in principle to the ballcock valve.
The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow.
The float linkage may have multiple lever arms, in order to give greater mechanical advantage on the valve. [5] A simpler valve appears similar to the venturi valve, but works by the float principle. These are simple poppet valves, operating by direct float action and sealing against the upper valve seat. [6]
A float carburetor uses the venturi effect to supply fuel into the engine intake; this depends upon a constant level of fuel in the float bowl to maintain the desired fuel/air mixture. The float operates a valve which keeps the fuel level in the carburetor consistent despite varying demands by means of a linked float valve. As the fuel level ...
A 'power valve', which is a spring-loaded valve in the carburetor that is held shut by engine vacuum, is often used to do so. As the airflow through the carburetor increases the reduced manifold vacuum pulls the power valve open, allowing more fuel into the main metering circuit.
The main benefit of the desmodromic system is the prevention of valve float at high rpm. In traditional spring-valve actuation, as engine speed increases, the inertia of the valve will eventually overcome the spring's ability to close it completely before the piston reaches top dead centre (TDC). This can lead to several problems.
A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]
Valve float is an adverse condition which can occur at high engine speeds [1] when the poppet valves in an internal combustion engine valvetrain do not properly follow the closure phase of the cam lobe profile. This reduces engine efficiency and performance.
Ad
related to: how float valve works