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When the number one cylinder is on its compression stroke is the intake valve open?
The piston is on the up stroke to compress so both valves are closed
Where should the lobes of the intake and exhaust cams be on number 1 cyl at tdc on 98 Mazda 626?
At TDC of the compression stroke for cyl #1, the cam lobes will be in a position such that they are putting no pressure on the valves, and valves are closed. At TDC of the exhaust stroke for cyl #1, the lobes will be in a position such that intake and exhaust valves may be open. Exhaust will be closing, and intake will be opening. There are two revolutions for the crank for one of the cam. TDC usually refers to TDC of the compression stroke, when valves are closed. This is when combustion/spark occurs, and is when the valves are adjusted on most engines.
What is wrong with a 86 Honda when there is no compression in the motor?
Bad compression is usually worn out piston rings, no compression is usually bad valves - assuming it's a 4-stroke.
During an engines intake stage what passages inside the cylinder head must the incoming air and fuel mixture flow though in order to enter the cylinder?
Intake valve must be open to allow atomized fuel mixture to enter cylinder--than all valves are closed during compression stroke 4- stroke engine 1) intake valve open to allow fuel mixture to enter cylinder 2) compression stroke all valves closed 3) ignition stroke mixture is ignited by spark from spark plugs 4) exhaust stroke--exhaust valve is open to allow residue to escape
Where is the compression stroke located on a 1997 dodge ram 2500?
The compression stroke is not part of the engine. It is what happens when the pistons are on the upward with closed valves.See link below.The compression stroke is not part of the engine. It is what happens when the pistons are on the upward with closed valves.See link below.
Does the first piston return to the top position once for firing and once for discharge and can you get the firing order off 360 degrees?
Yes - at the compression stroke both valves are closed (ready to fire) at the exhaust stroke the exhaust valve is open
What is the function of cumbustion chamber?
The combustion chamber has an exhaust valve and an intake valve. The power stroke is ignited just before TDC, in timing with the spark plug to ignite the fuel/air mixture. Hence, this forces the piston down with both valves closed. NOTE:Intake stroke (valve open to receive the f/a mixture), Compression stroke, both valves closed, Power stoke (see above), Exhaust stroke (piston upwards, with only exhaust valve open.
What are the names of the strokes on a 2 stroke engine?
all strokes are the same intake, compression, power, exhaust but it all happens in 2 revolutions of the crank instead of four revolutions like 4 stroke. Also 2 stroke has no valves and four stroke has intake and exhaust valves. hope this helps
When you align timing marks and have it TDC the cam valves should be closed on compression stroke?
should be in between intakevalve movement and exhaustvalve movement Yes, valves should be closed.
How many intake events are there in one revolution of a four cylinder engine?
There is only one intake stroke in a four-stroke engine. The other three strokes are compression, power, and exhaust. The intake stroke is a down stroke of the piston in which fuel is drawn into the cylinder while the fuel intake valve is open. The next stroke is the compression stroke in which the valves are closed and the fuel is compressed for combustion. The following stroke is the power stroke - a downward stroke of the piston after fuel combustion that drives the crankshaft. The final stroke is the exhaust stroke, an upward stroke of the piston as the exhaust valve opens to relieve the exhaust fuel fumes.
Where are cams used?
cams are used to lift and close the valves to create compression and exhaust . its also called 4 stroke
In four-stroke engine the time period when both valves slightly open?
overlap
