Which cylinder is the air inlet and outlet? How to distinguish the cylinder air inlet and air outlet?

Which cylinder is the inlet and outlet?

The so-called intake control or exhaust control refers to the direction of the one-way throttle valve connected to the cylinder port. Exhaust throttling is generally used to control double-acting cylinders, that is, to control the air flow in the direction of the cylinder's air outlet. This is conducive to controlling the stability and linearity of the cylinder speed, and is not prone to crawling. General control nozzle flow and single-actingcylinder will use intake throttle control. To determine the intake throttle and exhaust throttle, mainly look at the direction of the one-way valve in the schematic diagram. The left side of the figure is the intake throttle. On the right is the exhaust throttle.

How to distinguish the cylinder air inlet and air outlet

Generally, the air inlet is easy to find. The first thing is to look at the fuel injector. If there is a fuel injector, While looking at the air intake, look at the color. The air intake is darker and wetter. Looking at the size, the air intake is larger and the exhaust is smaller.