When will they have quad camshaft engines?

Question

1 cam for each intake valve and 1 cam for each exaust valve for 4 valve per cylender engine

Answer 1

It makes no sense to do so. A 4 valve operation is done easily with twin cams, one on each side for intake and exhaust.

Answer 2

If you understand how an internal combustion engine works and its timing, then you'd know that it's be pointless to put a cam to EACH valve. The reason for that is that on a given engine bank (or head) if each valve was not tuned to take in the same amount of fuel mixture and expel the same amount of exhaust, then the engine would wear itself out with the more powerful cylinders would overwork the weaker ones (I hope I made that understandable).



Another thing to consider is on a motor that had more than one bank, like a V6 and V8, it's already been proven that you can't have more power on one bank than the other. Back in '62 or '63, some guiniess over at International Harvester got the bright idea of a 7cylinder for the Scout Trucks. One bank had four cylinders and the other had 3. The reason most people have never heard of these is that they didn't last long. With the uneven power curve between the banks, the cam and crankshafts got beat all to H@%% and back.



You got me to thinking though that it would make since to put a cam for all intake valves in a head and a cam for all exhaust valves. WAIT! They've already done that.

Answer 3

Many of the newer V6 and V8 engines already have 4 cams. 2 per head. One reason you do not see it on 4 Cylinder motors is due to the cam sprockets. the cams on the engine only make 1 complete rotation to every 2 rotations of the crank. this makes the sprockets on the cams larger in size taking up more room. now you could engineer a motor to where you have cam sprockets on both the front and rear of the motor, this would make it possible to add the other cams, the main problem with this would be vibration and interference issues with the transmissions. A number of manufactures are currently working on cam-less engine designs for better performance and fuel economy, using solenoids or other methods to open and close the valves. so in the coming future it is likely we will no longer have cams controlling the in flow and out flow of the fuel and air.

Answer 4

when they can determine that the cost for maintenance would be cheap. it would be pretty cool that each valve can be controlled by it's own camshaft they would have to re-engineer the layout of the cylinders as there is limite space and trying to have two cam's in the same side in sync as one using one chain.

Answer 5

There'd be no real reason for that... besides how would you fit 4 cams into a head, its already crowded with two...

Answer 6

im going to have to say when the intake on valves have higher cylinders. oh and by the way i have no idea what im saying.