PARTS OF A PISTON

1)       T.D.C. – { TOP DAT CENTRE }

THE MAXIMUM POINT TO WHICH THE PISTON GOES UP IN THE CYLINDER IS CALLED THE T.D.C.

2)       B.D.C. – { BOTTOM DAT CENTRE }

THE MAXIMUM POINT TO WHICH THE PISTON DESCENDS IN THE CYLINDER IS CALLED THE BOTTOM DAT CENTRE .

THE MOVEMENT OF THE PISTON FROM T.D.C. TO B.D.C. IS CALLED A STROKE .

THE SPACE LEFT ABOVE THE PISTON WHEN IT IS AT  B.D.C IS CALLED THE COMBUSTION CHAMBER.