high vacuum engine (Dieselpartsworld) 2016-02-28    

The 40 reason engine burning oil "
24 high vacuum engine
The modern engine speed and valve overlap angle and compression characteristics improved, so that the engine vacuum degree increase. Some of the new engine deceleration, the suction vacuum up to 25 inches (635mm) high mercury (old engine design = 508mm the height of the mercury column). High vacuum to develop new oil ring, on both sides of the piston ring groove (above and below) effectively sealed, avoid in high vacuum and deceleration oil leak from the oil ring on both sides and back. The reason is often take the blue smoke or high fuel consumption of a main reason. Therefore, when needed, use with the side end face of the sealing ability of the oil ring is very important.
25 timing gear or chain wear
Timing gear or chain wear will cause the valve and crankshaft timing synchronization. Because the teeth or chain wear resulting from excessive backlash, the adjustment can not achieve the engine timing: a front circle and a circle may not be the same. When the valve and the piston movement is not synchronous, will result in excessive oil consumption. The reason is the excessive vacuum in the chamber will be a large number of oil pump, burn.