(valve) tappet clearance

См. также в других словарях:

• valve tappet — An adjusting screw to obtain the specified clearance at the end of the valve stem (tappet clearance). The screw may be in the top of the lifter, in the rocker arm, or in the case of the ball joint rocker arm, the nut on the mounting stud acts in… …   Dictionary of automotive terms

• valve lash — Valve tappet clearance or total clearance in the valve operating train with cam follower on camshaft base circle. Also see valve clearance …   Dictionary of automotive terms

• tappet — [1] The screw used to adjust the clearance between the valve stem and the lifter or the rocker arm. [2] The valve lifter itself. See barrel tappet bucket tappet cam follower flat tappet hydraulic tappet …   Dictionary of automotive terms

• valve — A device used to either open or close an opening to allow or prevent the flow of a liquid or gas from one place to another. There are many different types. See ABS relay valve accumultor valve air valve carburetor air control valve air gulp valve …   Dictionary of automotive terms

• Valve timing — In a piston engine, the valve timing is the precise timing of the opening and closing of the valves.In four stroke cycle engines and some two stroke cycle engines, the valve timing is controlled by the camshaft. It can be varied by modifying the… …   Wikipedia

• Tappet — [ Ford I4 DOHC engine, showing the tappet just under the cam lobe] A tappet in mechanical engineering is a projection which imparts a linear motion to some other component within an assembly. Properly speaking, a tappet is only that part of a… …   Wikipedia

• valve shim — A calibrated shim used to adjust valve clearance on OHV engines with bucket tappet assembly; for adjustment, a calibrated valve shim is placed or removed from between tappet and cam …   Dictionary of automotive terms

• tappet noise — Noise caused by the lash or clearance between the valve stem and rocker arm or between the valve stem and valve lifter …   Dictionary of automotive terms

• Hydraulic tappet — A hydraulic lifter, also known as a hydraulic tappet or a hydraulic lash adjuster, is a device for maintaining zero valve clearance in an internal combustion engine. The Conventional means of adjusting valve actuation always require a small… …   Wikipedia

• gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …   Universalium

• Four-stroke engine — Four stroke cycle used in gasoline/petrol engines. The right blue side is the intake and the left yellow side is the exhaust. The cylinder wall is a thin sleeve surrounded by cooling liquid. A video montage of the Otto engines running at the… …   Wikipedia