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On an overhead cam engine, the lobes on the cam push the rocker arms which push the valves open.
the valves are connected with the cams on the engine , the cams are rotated during the power stroke .
The cam is in the engine and it is what opens and closes the intake and exaust valves
Depends on the heads. The size is different for the exhaust valve and the intake valve, and different engines have different size valves. The valves are mechanical devices in the engine heads that open and close. The intake valve opens to let the air/gas mixture into the combustion chamber,. Both valves close the combustion chamber during the compression stroke, and the exhaust valve opens to let the burnt gas out during the exhaust stroke.
no... the force of the blood opens them and they naturally want to stay closed.
the cam is the part of your engine that opens your valves to allow in fuel air mix and let out exhaust gases
Valves prevent blood from going backward.Valves in general open to allow or close to prevent liquid flow. Heart valves opens to let blood into the heart then close to keep it there so that when the heart muscle contracts and squeezes the blood it is then forced out into the arteries of the body.
The heart valves open when blood is flowing through. They close to prevent backflow.
Camshaft opens and closes the valves The CAMSHAFT is connected to the CRANKSHAFT with gears so that the valves (intake and exhaust valves) are opened and closed at the proper time for each cylinder, and fully sychronized for with the movement of all of the other parts of the engine.
The part of the heart that opens when blood flows though is called the valve. There are four valves in the heart, two atrioventricular valves and two semilunar valves.
Valves prevent blood from going backward.Valves in general open to allow or close to prevent liquid flow. Heart valves opens to let blood into the heart then close to keep it there so that when the heart muscle contracts and squeezes the blood it is then forced out into the arteries of the body.
The idle air control (IAC) does this, not the "flapper".