E70 E71 37206859715 Air Suspension Valve Block BMW Air Suspension
Parts
Theory
• Camshaft Operation:The camshaft is a mechanical component of the
engine that rotates,enabling the engine to function by opening and
closing valves in time with the crankshaft.It is driven by a
chain,a belt,or a set of gears from the crankshaft.The camshaft has
many small cams with appropriate positions on the shaft that
transmit effort to the valve through the cams and metal
pushrods.This mechanism opens and closes the intake and exhaust
valves at the proper timing to input the air-fuel mixture into the
combustion chamber and output the combustion gas into the outside.
• Valve Mechanism Components:The valve mechanism consists of the
camshaft,pushrods,valves(intake and exhaust),rocker arms,and valve
springs.The camshaft's rotation opens the valves at the correct
time,allowing the air-fuel mixture to enter the cylinder and the
exhaust gases to exit.
• Valve Timing:The timing of the valve operation is critical for
the engine's efficiency.The intake valve allows the air-fuel
mixture into the cylinder at the precise moment,and the exhaust
valve allows the spent gases to escape at the precise moment.This
timing is managed by the camshaft and its interaction with the
pushrods,rocker arms,and valves.
• Valve Function:The intake and exhaust valves work harmoniously to
expel hot combustion gases and let in fresh air,maintaining a
continuous and steady airflow into the combustion chamber.This
process helps in keeping the engine cool and running efficiently.
• Preventing Backflow:The valves fit perfectly and tightly against
their seats to form a strong barrier that prevents gases from
escaping or re-entering the combustion chamber.The camshaft
controls the timing and manages the opening and closing of the
valve,which is key to preventing any unwanted backflow.
• Valve Types and Operation:There are different types of valve
operating mechanisms,such as side valve mechanism and overhead
valve mechanism.In the overhead valve mechanism,valves are placed
overhead on the combustion chamber.The camshaft's rotation causes
the cam lobe to push the tappet upward,which in turn pushes the
pushrod and rocker arm,opening the valve against the spring's
tension.
These principles outline the fundamental operation of the
distribution valve system in an automotive engine,ensuring the
efficient flow of gases and the overall performance of the engine.
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