OCR Text |
Show TIGHT PISTON RINGS WILL SAVE POWER Louses through leaking piston rings commence with the suction stroke, when there is a vacuum of as much as ten pounds per square inch, slightly decreasing decreas-ing and debasing the incoming charge. On the compression stroke the leakage increases under a pressure of as much au sixty or seventy pounds. On the power stroke the pressure ia quadrupled and hero occur the greatest losses through leakage. The moral of all this is to keep I tho piston ringu in condition to perform efficient service. |