different types of fuels used in ic engines

They are also called mushroom valves because of the distinctive shape of the valve head. Most engine valves are designed as poppet-style valves because of their up and down popping motion and feature a conical profile valve head that fits against a machined valve seat to seal off the passage of fluids or gases. More information concerning other about other valve types may be found in our related guide Understanding Valves. This article will briefly describe the operation of engine valves in typical combustion engines, as well as present information on the types of valves and their design and materials. They also vary by the type of operation (2-cycle or 4-cycle), and by the design placement of the valves within the engine. Engine types vary by the number of cylinders which are the combustion chambers that generate power from the ignition of fuel. This type of engine valve will not be addressed in this article.Įngine valves are common to many types of combustion engines, whether they run off a fuel such as gasoline, diesel, kerosene, natural gas (LNG), or propane (LP). The term engine valve may also refer to a type of check valve that is used for air injection as part of the emission control and exhaust gas recirculation systems in vehicles. Functionally, they perform similarly to many other types of valves in that they block or pass flow, however, they are a purely mechanical device that interfaces with other engine components such as rocker arms in order to open and close in the correct sequence and with the correct timing.

Image credit: Maksim Vivtsaruk/Įngine valves are mechanical components used in internal combustion engines to allow or restrict the flow of fluid or gas to and from the combustion chambers or cylinders during engine operation.

Different types of fuels used in ic engines