Need Help At Four Stroke Combustion Engine

[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!!!

 

[Marvo]

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.

 

[westward10]

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.

 

[westward10]

I reckon it is an oil circulating pump from the connection points. That 3D image is great.

 

[Marvo]

I couldn't get the 3D image to load on my 12 year old laptop with its 256 megs of Ram and WindowsXP

 

[westward10]

It is excellent been could look at it for ages. The starter and solenoid are numbered 19 and 20.

 

[Marvo]

I'd agree it could be a pump....

 

[Marvo]

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.

 

[westward10]

Got to be a lubrication pump as one of the pipes goes to the sump.

 

[PEG]

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.

 

[HandySparks]

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.

 

[PEG]

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

 

[kingeri]

Did you look at the other stuff on the site, transformers, motors etc. ?

 

[snowhead]

Scavenger pump for a Dry sump system.

 

[westward10]

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]

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.

The O.P put that on I assume, so may not be strictly correct.

 

[Jon Russ]

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

 

[The Ghost]

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.

 

[westward10]

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.

 

[R G]

Its the oil pump, and accessible too which is good rather than an internal pump within the engine ..

 

[HandySparks]

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.

An oil cooled alternator has an oil line in and out. The means of cooling is, guess what, ....the oil!

Alternators by Model Family | Delco Remy - http://www.delcoremy.com/Alternators/Find-by-Model-Family/50DN

Oil cooled Benz alternator - Bulawayo - http://mangoads.net/classified/ads/category/Vehicle+Parts+and+Accessories/advert/5374

 

[FatAlan]

Last engine I worked was a BMC 1275cc in a 1968 MG Midget.

 

[PEG]

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

Hi,i think this image,as i suspected,is a generic make-up,of similar types of engines,and their components.
If not,there would be,i suspect,a copyright mention of the manufacturer,and the model could be identified,and a definitive answer could be given.

It has an element filter housing,and would therefore have an internal mechanically driven oil pump.

On an a industrial,V6 turbo diesel engine,there would not be a primary oil lubrication pump,driven by a toothed belt. Any tensioner/belt throw issues = scrap engine.

If it is a scavenge pump,the drive is still wrong,there is not enough capacity,if it incorporates a reservoir,and,the only two visible lines,are from the sump to the main oil pressure gallery,which is incorrect,as a scavenge pump draws from the lowest point,and returns to a reservoir.

Tell me who makes that engine,and i will button it