Valve mechanism with a drive lever

[patriot]

Hi!
I apologize for my English. For the most part I use machine translation.)
Maybe I'm not quite correctly described my idea in the topic title, since I do not know what to call this system.
The bottom line is that the valve lever located below, above which the cam. Camshaft force is transmitted to the valve via a lever vertically.
This construction was extended in the second half of the 20th century in many engines, such as Nissan L, Ford Pinto and many other engines.
I think it will not be superfluous in the final release.
Sorry for the large image)

[Drake]

I'm having a bit of trouble understanding what your posting about Sorry, I know translation programs don't always work well..

Although if I had to guess I would think your talking about Non-Crossflow cylinder heads? I doubt they will include those as they are only really relevant the first half of the game, and they would take redesigning the graphics for each head and valvetrain.


BTW, 3rd pic is either an Early E31, E88, or N42 head with external oil spray bar. (From 1970-1976 Nissan L series engine) I know my L series engines

[nialloftara]

I think it's rocker arms you are talking about, or lifters for pushrods, if it is the devs have already ruled that going anymore in detail to the engine builder will take away from the game.

[Drake]

I think it's rocker arms you are talking about, or lifters for pushrods, if it is the devs have already ruled that going anymore in detail to the builder will take away from the game.

I don't think so... The game already has rocker arms for SOHC engines. What all the cylinder heads in his pictures have in common is that they are all non-crossflow heads with SOHC and rocker arms that actuate 2 valves per cylinder..

I think something has been lost in translation, but I am sure he must be talking about non-crossflow heads since there is no reason to bring up rocker arms since they are in the game.

[nialloftara]

"The bottom line is that the valve lever located below, above which the cam. Camshaft force is transmitted to the valve via a lever vertically." Sounds like rocker arms but you might be right with the non crossflow.

[patriot]

I'm having a bit of trouble understanding what your posting about Sorry, I know translation programs don't always work well..

Although if I had to guess I would think your talking about Non-Crossflow cylinder heads? I doubt they will include those as they are only really relevant the first half of the game, and they would take redesigning the graphics for each head and valvetrain.


BTW, 3rd pic is either an Early E31, E88, or N42 head with external oil spray bar. (From 1970-1976 Nissan L series engine) I know my L series engines

No, crossflow is not being, although it is often on these engines. I'm talking about rockers who rely on the hinge backwards, and in front of a valve. Cam presses the center of the rocker. Look at the picture 3, there is shown.
Ford Pinto engine has the valve train, but not a crossflow.

[Drake]

Oh, I guess I was wrong then.. Just a coincidence that they were non-crossflow heads.

What you are talking about is just superficial graphics really.. It wouldn't really affect the performance of the engine in any way, and given the amount of work required I don't think it would benefit the game..

Now if you were to suggest adding non-crossflow heads with that style of rocker arm I would support that since it would actually affect the performance and fitment of the engine(would take less room in engine bay than crossflow design) and also allow for more realistic early engine designs .. Although due to feature creep I know it will be shot down by the devs.. Hopefully they would atleast consider it for future expansion/DLC. Especially if they want to improve the first half of the games time frame.

[patriot]

I think it's rocker arms you are talking about, or lifters for pushrods, if it is the devs have already ruled that going anymore in detail to the builder will take away from the game.

I don't think so... The game already has rocker arms for SOHC engines. What all the cylinder heads in his pictures have in common is that they are all non-crossflow heads with SOHC and rocker arms that actuate 2 valves per cylinder..

I think something has been lost in translation, but I am sure he must be talking about non-crossflow heads since there is no reason to bring up rocker arms since they are in the game.

On possible SOHC engines valve located V-shaped (as in the picture) or have a bucket tappets that appeared later. I'm interested in the scheme, which I have shown.

[Drake]

Well the game currently has the design you posted in that more recent pic... See my picture below. (I was trying to make an accurate Nissan L24 in Automation, but I can't get the figures right without cranking up the year or quality to unreasonable levels for such a cheap mass produced engine.. I guess the design was just too good for its time..)

[pyrlix]

I think what patriot meant in the OP is something like the Opel CIH System - which were some weird system they made... mounted above the cylinders - but not in the normal SOHC way. More like a DOHC with only one cam and inlet/outlet valve on the same side. Basically SOHC with camshaft moved to the side of the cylinder head and reverse flow valves.

Back then the CIH had some advantages to OHC - like a lower and lighter cylinder head, and thanks to be a chain driven system it had less maintenance requirements. Disadvantages were the reverse flow cylinderheads - causing higher specific fuel consumption, other problem was the exhaust manifold. That one was located under the intake manifold - which caused porous fuel lines and may lead to a fire.