as above, a bloke at work work talking about them today and they sounded like quite a clever idea, to me

 

what you mean

 

an apposed piston engine doesnt have a cylinder head, just a a block with a crank at both ends, fuel, air and ignition is entered in the middle as the two pistons come towards each other, if that makes sense?

 

Horizontally opposed? Boxer engine?

 

he means with pistons facing each other

 

iirc one of the autounion cars did...

 

early train diesel are similar design

 

Aye ... I posted 12 seconds after he did

Never heard of an engine like that .. I could imagine a 2 stroke that works that way.

 

 

this sounds intresting

 

 

Thanks ... I know what a Boxer engine is ..

Come on then .. lets see some exmples?

 

designed in the early 1900's IIRC thought these were only made for diesel fuel tho?

 

What did you think was clever about it?

Sounds like a crap idea to me,lol.

 

Nice pic Twellsie ..

Looks aircooled and has reeds instead of Valve's?

 

could be a 2 stroke quite easily then with no valves , but I would imagine the stroke would have to be very short or the compression ratios would be mad!

 

 

the above are not boxer engines, boxers have the crank in the middle and the pistons outbound

 

but i imagine you can run masive compression ratios, as there are no cylinder heads/gaskets to worry about

 

A true Boxer engine has the pistons being pushed towards each other as in 2 boxers fighting.

Boxer has been mis-used to describe flat engines.
.

 

As stated mate ... Boxer engine has crank in middle ..

Like a porker Flat 6

 

no mate, this is a boxer engine





mot to be confused with the 180° V-engines

 

at first i thought he was on about steam engines, they work like that, one piston but 2 ends when they thought of the design to make use of the extra steam

but this looks like something totaly different

 

which is wht he was saying

 

Or Horizontally opposed.

The engine Twellsie was on about is summit totally different? 180* V

 

This will be the infamous Boxer variant where the right hand piston has a 17mm stroke and the left hand one has a 29mm stroke, due to the right hand conrod running on the eccentric crank centre line.

.

 

you are confussing the hell out of me here

 

Still ultimately limited by PCP and the quality of fuel being used etc.... the normal rules would still apply.

 

As far as iam aware a Boxer or Horizontally opposed engine has the crank in the middle. Flat engine found in porkers.

The one you described (with Pics) I've never seen before ... I never went to The history of Engine class.

Got to hand it to you: Pretty interesting thread ... The replys came to fast and some got mixed up

 

I am pressuming that is the difference between a Horizontally opposed engine and an opposed piston engine?

like the fairbanks morse opposed piston deltic

 

Yeah .. I supose

Changed a timming belt on one of those the other day

EDIT: Do'H It didnt have a timming belt

 

holy shit what did that power

 

over 3000bhp apparently

 

lol, the question was what did it power, not what power did it make.

answer to your question, trains and boats

 

deltics now were talking..................

 

Wiki is a wonderful thing

Are they still in use?

No wonder your mate get's a stiffy on over them ..

 

I dont think he gets a stiffy over them

we where just talking about engines, lol

 

No worries ... I use to get stiffys over MTU's And QSK's

Bet they churn out horrendous emission.

 

i have no idea what they are

 

Hi all,

Some 1960's Commer truck's used a 3 cylinder opposed piston 2 stroke supercharged diesel, that had a single crankshaft at 90 degree's to the cylinder's and below them, the piston's had conrod's connected to rocker arm's that had another set of conrod's connecting to the crankshaft !



This engine was known as a "Commer screamer" as it had a great sound.

Other than a rotary engine this was the last "unusual" type of engine on our road's.

The Deltic engine was made by Napier.



Andy