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The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre–World...

valve lifter or hydraulic lash adjuster, is a device for maintaining zero valve clearance in an internal combustion engine. Conventional solid valve lifters...

the valve timing is the precise timing of the opening and closing of the valves. In an internal combustion engine those are usually poppet valves and...

blower or piston pump for scavenging. The reed valve is a simple but highly effective form of check valve commonly fitted in the intake tract of the piston-controlled...

carpels that make up the ovary. See Ovule#Location within the plant. An obturator is present in the ovary of some plants, near the micropyle of each ovule...

forming a combustible air-fuel mixture with the air. As soon as the intake valve opens, the piston starts sucking in the still forming mixture. Usually,...

lubricated and inserted with obturator in general direction of the navel. The direction is then changed and the obturator is removed so that the physician...

camshaft and valve actuation. Increasingly common recent uses may include the tensioner for a timing belt or variators for variable valve timing systems...

ignition timing for a given engine. These include the timing of the intake valve(s) or fuel injector(s), the type of ignition system used, the type and condition...

An obturator ring was a type of piston ring used in World War I aero engines for improved sealing in the presence of cylinder distortion. The cylinders...

C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture...

pointing outward to achieve better support. The obturator internus originates on the pelvis on the obturator foramen and its membrane, passes through the...

limb Pelvic girdle [Sacrum - see vertebrae section] Hip bone Acetabulum Obturator foramen Greater sciatic notch Ilium Arcuate line Iliac crest Anterior...

particularly for jet engine powered aircraft. For a steam locomotive, the valve which controls the steam is known as the regulator. In an internal combustion...

control valve (usually known as the fuel selector). This valve serves several functions. The first function is to act as a fuel shut-off valve. This is...

The Monosoupape (French for single-valve), was a rotary engine design first introduced in 1913 by Gnome Engine Company (renamed Gnome et Rhône in 1915)...

valve (throttle plate) is generally fitted at the start of the intake manifold (just below the carburetor in carbureted engines). The butterfly valve...

exhaust) plumbing improves the flow through the valve. Increasing the pressure differential across the inlet valve typically increases VE throughout the naturally...

driven oil and water pumps, two overhead camshafts with standard poppet valves, and turbocharging. Its displacement is 700 cc (43 cu in) without the secondary...

Inhale valve assembly Visual assembly (sight glass and inner and outer clips) Speaking diaphragm membrane (intercom) Exhale valve assembly Obturator for...