valve tappet meaning in Hindi

It has an air-/ oil-cooled V-twin engine with hydraulic valve tappets and a shaft drive.
A few standard Ford auto and truck parts, such as timing gears and valve tappets, were used in this engine.
An investigation into the cause of the fire by Rolls-Royce concludes that an insufficiently tightened inlet valve tappet locknut during maintenance caused the inlet valve to drop, where it was hit by the rising piston and broken off at the stem, allowing burning fuel to enter the rocker cover whereupon it quickly spread.