Double Acting Steam Engine Animation

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An animation of a double acting steam engine. The double acting steam engine has two power strokes per cycle. Steam is admitted to the cylinder by means of a sliding piston valve. This is out of phase with the displacer piston by 90 degrees - this ensures the correct timing of the steam entering into the cylinder. This animation of a double acting steam engine also shows the tubes and supply network of the steam, from the boiler and eventually back to the boiler.

[@brat997]

At 0:54 and again at 1:09 is a huge mistake. The spent steam does not flow back to the boiler. If that were the case, the pressure required to force it into the boiler would offset the pressure acting on the working side of the piston and the machine would not run at all. In a working steam engine, spent steam is exhausted to the atmosphere.

[@SternLX]

Steam does not get sent back to the boiler. It's exhausted in the smoke stack to help with draft through the firebox. It's low pressure steam when exhausted out of the cylinder. This design is very old by the way and wasn't used on Locomotives very often and mostly with a Flat sliding valve. It was found injecting the steam at the ends of the slide valve inside the Steam Chest put way to much stress on the seals on the ends and wasn't very efficient. Instead they started injecting between the valve pistons and exhausting on the ends. So you end up with 1 steam inlet and 2 exhaust ports in the Steam Chest.

[@InventingThings]

I absolutely love this idea

[@azadyadav4680]

thank u very much to give the basic understandings about steam engine.

[@Andykille80]

No. In a marin steam engine, the exhausted steam is send to a condenser to be water again and than back to the boiler to be heated again.

[@kevinyancey958]

I'm wondering if you could change the timing, on the fly, the control the amount of steam used based on load. If you could rotate the the rod on the valves, split the front and rear with opposing threads, turning it one way would open the valve and add more steam or reduce in the opposite direction. That way, you can have more steam while under heavy load and less when the load is less. This could eliminate the Johnson bar, possible making this an automatic function and increasing efficiency. I still think the rotary, and even poppet valves would work better than the sliding valve, now that technology has improved through ICE designs. I'd probably go more along the line of a direct injection engine design, seeing as the intake is under high pressure, unlike a conventional ICE intake valve. That leaves you with an injector and exhaust valve, like a diesel two stroke, minus the supercharger.

[@chamagical]

Steam engines working at supercritical pressures, where the steam stays in a sort of liquid state, often use an injector system. e.g. Cyclone technologies engine. www.cyclonepower.com

[@akashanand1329]

thank you

[@luisoliveira7265]

NICE EXPLANATION. MY LIS IS 561 AT 20.10.2019.

[@diplomatutorial3256]

Nice explaination.

[@195dm]

Bel lavoro ma hai invertito i condotti.
L ammissione del vapore avviene al centro della valvola e lo scarico, facendo come hai fatto tu avresti una resistenza da parte del vapore nella valvola che fermerebbe il motore

[@russellehler6706]

Thanks. Now I understand it.

[@prajshrestha3188]

tx its so easy to understand

[@thailander5572]

to design sliding-valve to open and close synchronizing to main-cylinder movement is not easy, and just wonder how much difficult it is.

[@varunmewada6884]

Best explaination

[@sanjaysaaho8441]

thanks bro

[@michaelhands2189]

How much more efficient are double acting than regular steam engines (1.5x?), and what's this factor related to (cylinder size?)?

[@vandanakumari649]

tnx . very good

[@Breaktrick]

how can i get the physical study for this engine please for my project on XNA IDE and thanks

[@paulie1982]

Thanks glad you liked it. Nice Tesla turbine btw ;)

[@ufoengines]

Cool!

[@hazrathsaheb5266]

thank u ..very much ....

[@Drlnpayton]

What software do you use to create your excellent animation please?

[@avaman26]

dont know on which did they made but "physion" software can also be used!

[@Drlnpayton]

Thank you

[@vikasjha7623]

great

[@sinanmalakkal]

thanks

[@alexvidu4517]

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[@sonuprajapati9483]

Sir sound bhi chahiye tha

[@mr.saurya3253]

How to make a this model

[@bigdogbigben]

Is the slide valve and piston 90 or 180 degrees out of phase

[@seven9766]

90 forward in the rotation relative to the power crank generally speaking. Tuning might shift this a few degrees i suppose?!?

[@cia9315]

Trial and error my friend

[@kevinlane1219]

An engine that recycles its steam is always good in my book. :-)

[@Anomalouzs]

that fact that no car uses this is criminal

[@arturford4276]

Есть кто собирает эту модель? Существует ли такие люди вообще сегодня ?!?)

[@arturford4276]

И это было придумано пацанами по16 лет ?? В 1920 году! (Мы идиоты на их уровне!)

[@Fatpumpumlovah2]

ABSOLUTLY BACKWARDS