ocr: BUL- BUTTUMI UEHU CENIER The rarthest point in the piston travel down the cylinder. Called dead center because a single cylinder double acting steam engine will not self start from that position. See also Top Dead Center. CLEHRHNCE DULUME The volume in the cylnder at TDC. CUMPRESSIUN RATIO The ratio of displacement to clearance volume. CYCLE See Two and Four Cycle. JISPLHCEMENT The volume swept by the piston during one stroke (180 degrees rotation of the crankshaft), from BDC to TDC, for example.
