Crossley TSH 2 Stroke Semi-Diesel Engine

[FM60260]

1:28 Sounds great!!!

[tangyedan]

@rushymoto - It has an injector. Only low pressure, so more or a sprayer really.

[NearAbbeyRoad]

what is a Semi-Diesel Engine?

[tangyedan]

@NearAbbeyRoad See the other comments below. Basically semi-diesel is surface ignition (rather than compression ignition like a full diesel) relying on the hot bulb to ignite the charge, hence the need for a blowlamp for starting.

[rushymoto]

@tangyedan So dose it have an injector or dose it suck the fuel in via a carb like a petrol engine?

[aaronzack14]

thank goodness for the electric motor

[bimbu9]

Man i love this engine the noise is perfect

[bluemoondiadochi]

i didn't know they made hot bulbs that could go 1000 RPMs! that's a lot!

[adminontrollgubben]

@bluemoondiadochi i have made small "Hotbulbs" of weed eater engines, and they can rev insaneley when they go out of control:P

[bluemoondiadochi]

@adminontrollgubben it would be nice to have a smaller one. most of them are huge. they are nice too, but need space. smaller are much more practical, IMO.

[douro20]

@bluemoondiadochi

Bolinder/Munktell made ones that could run 2200 rpm. They had a jerk-type pump like a solid-injection diesel engine but low compression so they needed preheat to run.

[bluemoondiadochi]

@douro20 thanks!

i learn something every day!

[1foxtrot70]

Any info on fuel consumption per hour? This might be great for any of the variety of veggie oils.

[northerbrewer]

@1foxtrot70

Not as good as diesel because the compression is low.

But very well suited to good clean Veg oil.

[walkingfreak]

so the torch on the engine is what and is that just pretty much the first creation of a glow plug?

[tpvalley]

@walkingfreak

kind of, but its called a semi diesel because when its running that area is uncooled so it gets very hot, this extra heat build up helps to ignite the diesel along with compression when its injected and when cold u need a blow torch.

[goldie103103]

took some starting but it was worth wait for the it to happern. Lovely engine and a great noise from the exhuarst.

[Bidone1967]

Nice hot bulb engine. Runs good!

[Vuffira]

very nice hot bulb, didn t know that Crossley build them too. Would love to buy one for my collection

[TheLaurencekid]

no they do have the same compresion ratio bassicly semi diesel means that it can run off anything it can even run off butter it has to be melted first :)

[steamwally]

They tend to have lower compression so that a thicker fuel oil can be used, you would get extreem "pinking" if they used the same compression ratio as a cold start diesel engine.

Nice engine isn't it : )

[douro20]

I didn't think they made oil engines quite this small.

[Okanagan48]

Okay yah got me.....Whats a Semi-diesel?

[robinhooodvsyou]

Compared to normal diesel engines:

-normal diesels have a compression ratio of approx. 20:1, semidiesels can have 3:1 as the minimum.

That is possible becouse normal diesels have compression ignition, semidiesels have an uncooled plate on the cylinderhead which is heated with a blowtorch to allow the auto-ignition happen at lower compression.

[douro20]

It is more properly called a hot-bulb oil engine. It's an old design dating to an 1886 patent by Herbert Akroyd Stuart. They have a hot bulb attached to the top or the side of the cylinder head which must be heated to running temperature before starting. Fuel is injected by a spray pump directly into the hot bulb. The injection point varies per engine; it can be either after bottom dead center on the intake stroke or right before the top of the power stroke as it is on this engine.

[harddiskfragger]

nice engine

[steamwally]

What a machine!

[Used2bBlue]

Do the make a modern version of this engine? Aside from starting issues wouldn't it stand to reason that this would be a more efficient engine design seeing it has two power strokes per cycle?

[silicon212]

A two stroke engine has one power stroke per revolution. I think that's what you meant to say?

[Used2bBlue]

Thank you

[bloodreighn]

crossley was bought out a number of years ago.. so i dont think they make these even as an updated version

[geoff390]

Didnt think semi diesels ran at 1000 rpm but i guess they do!

[nomad1187]

Thats some serious old-school cool. If you did not know any better and walked up to it and looked at it you woud say "Hey, The starter is missing!" and if it is , its bacause "HE" is on his coffee break!!!

[MRSketch09]

Geez that engine was being stubborn....

[tangyedan]

I should have noted in the description that it was filmed in late December and it was less than 5 degrees c. in the shed!

[MRSketch09]

@tangyedan

Ah, that definitely explains a lot.

[bloodreighn]

@tangyedan a Cap on the end of the exhaust to aid in back pressure would have made it slightly easier to start up :P

[sidecrank]

You don't need the gym,Dan

[justsmoky]

That engine would look good in my garage. If you want to sell or swap it please let me know.

[anthacdc]

Nice engine man