Discuss Need Help At Four Stroke Combustion Engine in the Electrical Tools and Products area at ElectriciansForums.net

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J

Jon Russ

Hi,

I’m making a training tool/website to help people learn about engineering, but I’ve got a bit of a problem. I was working on 3D model of an engine and labelling parts etc. but there is one piece whose function I do not known (see below image).

I’ve asked around but no one I know seems to know what it is. The second below image is a close-up.

This is what I do know:

• Lit is belt driven so it turns (possibly centrifugal filter?).
• The pulley is small so it turns fast.
• There seems to be a connection to the lube oil sump.
• There are jubilee clips so it is easy to remove (which again points to some sort of filter).

So, does anyone know what it is? Item ‘2’ on the below image is for a lube oil filter (probably, informed guess), so why would they have a secondary filter on the suction side of the lube oil system (assuming that it is a filter and it is related to the lube oil system)?

The model can be found at the link below, it is interactive so you can zoom in to get a better look etc.

Full Screen Four Stroke Combustion Engine - http://www.3d-knowledge.com/full-screen-four-stroke-combustion-engine.html

Any help is welcomed!!!

Need Help At Four Stroke Combustion Engine {filename} | ElectriciansForums.net

Need Help At Four Stroke Combustion Engine {filename} | ElectriciansForums.net
 
I think that might be a diesel engine. The big item you've highlighted looks like the starter motor and I'd guess the smaller cylindrical thing behind it is the solenoid that switches the electrical supply to the starter. The two bolts side by side toward the top of the starter in its centre would be the positive and negative electrical terminals. The various other bolts you highlighted would be retaining bolts that tighten the retaining straps/clamps around the starter. The circular thingamabob on the front of the starter is a toothed pulley wheel that drives the belt.
 
No that is some sort of pump, those two connections centre top are pipe lines. The starter motor is to the right of it, see the 3D image.
 
I reckon it is an oil circulating pump from the connection points. That 3D image is great.
 
I couldn't get the 3D image to load on my 12 year old laptop with its 256 megs of Ram and WindowsXP :(
 
It is excellent been could look at it for ages. The starter and solenoid are numbered 19 and 20.
 
I can't see the other annotations either because I can only get the 360 degree view. I'll check it out on my work PC tomorrow which is a few years younger than this one.
 
Got to be a lubrication pump as one of the pipes goes to the sump.
 
Hi bud,looks like a bypass oil filter,as there is an element oil filter higher up. The drive would suggest a centrifugal type filter,which actually work very well.

Scania,Zetor and many others use these,some only have these fitted,and it is surprising how hard and dry,the deposits are,which centrifugal force removes from the oil.
 
Could be an oil cooled alternator. They do exist, but whether they're fitted in the suction line, I don't know. Can't see an alternator otherwise.

Edit: There are also what appear to be a couple of studs on the non-driven end, which might be output terminals.
 
Had another look at the 3D image,good fun,but i think it is a generic image,therefore not easy to know what actually is real.

The line to the sump,is a return,as lubrication suction lines are always as short as possible and rarely external. The other line comes straight from where the main oil gallery would be,so that would be the centrifugal filters feed,via a flow restrictor.

If this is to be a training or instructional aid,might i suggest using an actual manufactured engine,with authentic parts,which can be detailed individually,and their function explained.

Start with suck-squeeze-bang-puff,and work towards all other four stroke principles.

I can remember with joyous clarity,the evening i stripped an old NSU Quickly moped engine,and pieced together,how a crank,moved a piston,and the rings stopped the compression escaping,allowing the entrapped mixture to be ignited... i was 10 years old!

All this will be comedy,when my two sons are cruising about on ion hover-boards;)
 
If you tap on no.23 on the 3D image it clearly states that pipe is the link from the sump to the oil lubrication pump.
 
Snowhead is right, I put the comments on with educated guesses, I had no other reference. Based on all the feedback I got here and elsewhere, it seems to be a scavenger pump for a dry sump system, although the alternator is not shown on the model and I am trying to figure out if this part is a combination of both.

@PEG - "Start with suck-squeeze-bang-puff,and work towards all other four stroke principles." - I have done this on other webpages, but I need to order everything correctly. The internals are shown in the below image, there is a separate page for this and it is animated to show how the parts move.

View attachment 35484
 
Luckily you have come to the right forum for internal combustion engines. I can say with absolute certainty that I do not have a clue.
 
That is not an alternator it has an oil line in and out with no means of cooling/ventilation. The 3D image clearly indicates a lubrication pump.
 

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