$$ \rho_ \), and now we can rearrange the Bernoulli equation, and show that the pressure at the throat drops as the velocity at the throat increases.įigure 2: Pressure decreases and velocity increases at the venturi throat This can be written between any two points in the venturi as: The conservation of mass states that mass cannot be created or destroyed, which means that the mass in a closed system must remain constant. Physics of a VenturiĪ venturi is a simple device that makes use of two physics principles: the conservation of mass and Bernoulli’s equation to define the relationship between velocity, pressure, and area through a constricting and expanding tube through which air travels.įigure 1: A venturi is a flow control device
This mixture is then sent to the engine intake manifold where it is combusted. The CarburetorĪ carburetor (or carburettor) is a mechanical device that makes use of the principle of a venturi to atomize liquid fuel and mix it with air in the correct ratio for optimum combustion. Fuel injection has largely replaced carburation in the automotive industry but not so in the engines of light piston aircraft. Fuel injected engines use a pump and a fuel distribution system to inject fuel directly into the induction system through a set of fuel injectors. The alternative is a fuel injection system. The carburetor is still the most commonly used device in light aircraft to atomize and mix the fuel and air required for combustion. This mixture is then routed to each cylinder where it is ignited as part of the four-stroke engine cycle.
The carburetor forms a part of the engine’s induction system and is responsible for bringing together and mixing the air and fuel.
0 kommentar(er)
