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valves open and close by raised lobes on the camshaft . they hit the connecting rod, which is connected to the rocker arm that open and closes a spring loaded or hydraulic valve lifters . the intake or exhaust valve is open when when the raised lobe hits the connecting rod. the valve closes when the cam shaft rotates and the connecting rod falls off raised lobe.
What else can I help you with?
What is the main purpose of a valve spring?
The main purpose of a valve spring is to maintain pressure and ensure that the valves close properly after they have been opened by the camshaft. It helps keep the valves in contact with the camshaft lobes and prevents them from floating or bouncing at high engine speeds. Ultimately, this allows for efficient and precise control of the engine's valve timing and operation.
Valve operated mechanism for internal combustion engines?
The pistons drive the crankshaft which drives the camshaft which open and close the valves.
What is the purpose of a valve tappet?
To move the valve down as the camshaft rotates.
Where is camshaft position sensor on Mercedes c280?
The camshaft Hall-effect sensor is located at the front of the engine (standing at front of the car) to the right close to thermostat valve. It is suplied with voltage from de relay module.
Which 1 of the following 4 controls the opening of engine's valves is it the Camshaft the Crankshaft the Valve springs or the Combustion chamber?
The camshaft opens the valve via its Lobes, against the valve spring, to open. The valve springs closes the valve back.
What are the advantages of an overhead camshaft valve operating mechanism compared to the side camshaft with overhead valves?
Fewer moving valve train parts such as the push rods.
What is valve actuating mechanism?
Mechanism with side camshaft and Mechanism with overhead camshaft both valve actuating mechanisms are used to operate inlet or exhaust valves.
What is the purpose of a camshaft?
The purpose of a camshaft is to open and close the intake and exaust valves.
What is the distance the camshaft lobe opens a valve?
That is called the lift
How Does Valve Work?
u mean valve of a engine.....? here's the answer... when the crankshaft rotates,then with the help of timing gear the camshaft rotates.timing gears are the gears on crankshaft(pinion) and camshaft(gear). when the cams on the crankshaft rotates it lifts up the follower(during eccentric portion of the cam). follower is connected to a push rod which moves the rocker about a point. rocker presses the valve stem in avalve guide againt the spring pressure. the valve comes down from the valve seat. and our fuel air mixture rushes inside the cylnder. when the non eccentric portion of the cam on the camshaft comes valve stem moves up due to spring pressure. the timing gears are such that they maintain a speed ratio of two between them. it means camshaft has to rotate at half the speed of crankshaft. it is because a valve has to open and close once in every two revolutions of the crankshaft.
What does exhaust?
Exhaust camshaft phasing on a VVT (variable valve timing) engine is the adjustment of the exhaust camshaft(valve timing) to what the cylinder needs at that rpm/load to improve power/eff. or emissions.
What is the job of a camshaft timing oil control valve assembly?
to inject oil into the valve timing controller assembly
