The Two-Stroke Engine | Shell Historical Film Archive
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- čas přidán 21. 12. 2023
- Explore the timeless working principles of the two-stroke engine and its remarkable versatility, showcased in this 1959 film.
Discover the key factors that make two-stroke engines stand out, such as efficiency, weight economy, and cost-effectiveness. Using engaging animations, we delve into the operating cycles of both petrol and diesel two-stroke engines while highlighting the critical role of inlet and outlet ports.
This film was produced for showing to general audiences as well as engineering students.
For more information about Shell’s Historic Film Archive please contact: filmservices@shell.com
#Shell #ShellFilmUnit #HistoricFilmArchive #Documentary #History #Engineering #TwoStroke #Engine
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Shell’s surprising and captivating Historic Film Archive dates from 1934 and covers a rich mix of topics from technology, science and engineering to craftsmanship, motorsport and travelogue.
The Shell Film Unit, responsible for the content, was a highly celebrated part of Britain’s Documentary Movement. Key figures from that movement were involved, including: Jack Beddington, Edgar Anstey, Arthur Elton, John Grierson, Kay Mander, Stuart Legg and Douglas Gordon.
Its films were wide reaching, often screened in cinemas and through the non-theatric film distribution circuit, which brought film to educational establishments and organisations across the UK. While many films covered technological themes related to Shell’s activities, others were entirely unrelated and served purely to educate the general public.
As Shell innovated in technologies that would provide oil and gas products for the world, the Shell Film Unit also innovated in the technological advancement of film, incorporating graphics and different forms of animation as early as the 1930s.
During WW2 the Shell Film Unit was co-opted into war effort, making films for the Ministry of Information’s film division. Its prowess in technological documentary suited the MoI’s need for technical training films.
While the name and the medium has changed many times over the years, the documentary tradition lives on at Shell. Its contemporary film team is part of Shell’s multi-disciplinary in-house agency, Creative Solutions. It continues making award-winning factual content that informs and educates the public, now usually released on social media platforms. - Krátké a kreslené filmy
If you enjoyed this video, please check out the full 'Shell Film Unit - Historic Archive' playlist, where you'll find lots more gems!
czcams.com/play/PLEPIVJVCFQH2hoYONdHiQlVrvYQ-k4Xay.html
One of the best explanitions os two stroke engines i ever whatch in my life.
Congratulations!!
I used to see and hear Detroit Diesels all the time. Now it's a rare occurrence to hear one
I have to see them running/driving on CZcams.
There are still Detroit Diesel engines, but their 2-stroke models went out of production long ago.
The most comprehensive explanation of the working of every kind of two stroke I have seen yet.
Having been working on a couple of the two stroke types of diesel engines, the Crossley HSTV8 cross flow engine and the famous Napier Deltic in preservation, this was a joy to watch.
One thing that missed out from the explanations was two other reasons why a multi cylinder two stroke diesel doesn't use crank case scavenging.
Not only would the pressure be to low, but because every cylinder needs it own sealed crank case volume for this to work, in a shared crank case volume two pistons going opposite directions would cancel each its air displacement out.
This would be not very practical as you would need pre mix lubrication, but you can't lube a diesel with pre mix as the oil in the air would prematurely ignite during the compression cycle, even when this didn't happen an engine this large would consume enormous amounts of oil this way.
Second reason is that there is always back pressure in the exhaust manifold because such an engine uses a collector header instead of separate exhausts as on a motorbike.
Separation of crankcase volumes is not a problem for inline engines, regardless of size.
I have been a marine engineer for over fifty years. Two stroke diesels are the most efficient power plant that could ever be used. I have worked on all types and still hold great affection for their efficiency and simplicity
Well no, they aren't.
Really cool 2 and 4 wheeled vehicles shown in the beginning.
Very good and detailed description of 2 stroke operation.
A very helpful video! I owned a 1974 Wartburg car a few years ago and never really fully understood the 2-stoke principle. This video has clarified things-thanks!
Congratulations😺👍
i love the mid-century peter and the wolf soundtrack to thier "educational " films.
If the crank seal leaks even a little, you lose a ton of power. Learned that on my 1970s Yamaha 250. My friend had a Kawasaki with a rotary valve 2-stroke engine. My CR 500 from 1990 was reed-valves and liquid cooled.
Waaang waaaang ting ting ting ting😂😂😂
Greetings to the Royal Dutch Shell family
I really enjoyed my 1972 Kawasaki 750 triple 2 stroke, modified from about 75 hp stock to about 115 hp. They were known as the widowmaker back then, fastest production bike made in 1972. It would do power wheelies at over 100 mph, I never got beat by any big 1000 or 1100 4 stroke of the day. Lucky to be alive. My RD 350 Yamaha was very quick too, legendary.
''RD 350 Yamaha was very quick too'', to fool plug . I know I had a '73 purple one with a white line and for touring I always brought a box of dozen ngk.
Mine is the smaller 1977 KH250😁😁
@@cabaneencac5168 I never once fouled a plug on either of my street 2 strokes, they were not stock. Must have been an issue. Thanks
@@TheHalloweenmasks was that a 3 cylinder Kawasaki?
@@WmArthur Yes 3 cylinders, sounds very nice
More of these videos please.
The Detroit 2 stroke Diesel engine story beautiful sound I like it
Brilliant just brilliant !
Excellent film, thanks for posting!
Thank you for the cool video, gassy pals
How did we go from these type of educational "movies" to tiktok?
I guess the same reason we went from productivity to DEI.
awesome! Thanks!
Superb description. It's sad that, with all the power of computers, they don't teach things today as clearly as they used to.
I loved the ring a ding ding days
wonderful
To my knowledge the last commercially produced two stroke was the Evinrude outboards produced by the Canadian Bombardier Corporation. By all accounts they outperformed all their competitors, but the reliability was poor. They seemed to solve the typical problems of pollution that two stokes typically have. It is a shame they stopped producing two strokes as I think two strokes could have a future.
That's presumably a Commer TS3 "Knocker" from 20:43 to 21:35.
Yes! It was a very efficient setup which Chrysler purchased to put out of business so they could sell their less efficient four stroke Diesels in England.
Having watched this film a few times I think the Voiceover is done by the actor Simon Lack, although I don't see him credited.
Not sure why girls aren't educated about this stuff in high school. I always wanted to take my 1974 Chevy Nova apart and put it back together. Never did. Now I have a car that when I open the hood I don't recognize it as an engine.
Todays engines especially Toyota never need fixing or taking apart anymore, even runs long without engine oil!
I visited the Perkins engine factory last week, very interesting.
Where is it located
Your 2 stroke of the future
I'd love to have a 2S Saab 96, but living in Munich this would bring out the lynch mob with their 'clean' E - bikes scooters cars brains ... its a good thing the electrical power is produced by thousands of virgins moving generators made from recycled combustion engines. Happy Easter 🌻:)
1:40 The Isetta bubble car was powered by a 300cc FOUR stroke.
SHELL
WE ❤ SHELL
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The dude with the shades @ 24:51 looks cool...😉
... surprising everyone with a smile eventually :)
Looks like a Mafia dude, or Man in black time travelling!!!😂😂😂😂
Can be piston-port, rotary valve, or reed valve induction.
we've come a long way...........baby.
Funny to see that the VASPA gang was at it already in 1959😅😅😅
Now fuels come with E-10, (in my country it is standard, not sure about other countries) my question is will E-10 damage my old 2 stroke liquid cooled motorcycle in the long run, my autolube is also working, im just adding 2T oil as a precaution.
If old enough to have a carburetor you may need to enrich the fuel mix . Fuel lines and seals may need changing as e-10 may not get along with them. Find a motorcycle mechanic to help with the transition .
Also I use in my old timer cars Liqui Moly gasoline stabilizer for E10 and Lead replacement additives. Check their products.
@@garyhooper1820 will do, I just changed the rubber boot in the airbox, the old ones is a real mess. Thanks!!
@@MG-iv3lp yup, its old enough, an old Mikuni VM carb, I will try to find that product, only problem is Liqui Moly is a bit hard to find in most local shops around here. Do you also use a 2 stroke bike?
It's more a problem that ethanol attracts moisture from the atmosphere, causing corrosion. Use fuel stabiliser and run the carbs dry after use. Here in Australia, we get a choice. I avoid it.
The Brits invented the two- stroke! Love it or hate it. It's appropriate that they do a film on the subject. I've got a Johnson outboard from this vintage that still runs, so they can't be too bad. A lot of two strokes run needle bearings which come apart easily once their surfaces pit and flake and grenade the engine. Many factors can make them unreliable. The simple fact that they are two stroke doesn't make them unreliable or less reliable. Less efficient, yes. In some cases big time.
A Scot invented the two-stroke. Professor Sir Dugald Clerk. He made many other contributions to engine design and the science of IC engines.
His design is the basis of the modern marine engine, which is very efficient and very reliable.
@@Turnipstalk Pretty cool as I have some Scottish heritage. I believe that a Scot helped invent the tv as well. Thanks for sharing.
The fuel/air mixture does NOT "explode" when ignited.
If it exploded the explosion would destroy the piston and other engine parts.
On ignition, the mixture burns extremely rapidly but smoothly to deliver smooth power. It takes place so rapidly that, to the naked eye of the average person, it appears to "explode".
High speed camera footage shows what really happens on ignition - a flame front is propagated and spreads smoothly throughout the fuel/air mixture, creating hot, expanding gases that provide power.
It is expansion that does that, not explosion.
Ignorance truly is not bliss.
Exactly correct . Explosions are termed "detonations" which result in damaged engine components .
In my mind I saw the flames spread so gracefully across the cylinder head.
Narator says "mixture burns explosively" NOT explodes. Most will comprehend from that - rapid burning not explosion.
There was one error in this wonderful film, two stroke motorcycles do not come on the mega, that was the preserve of te very highly tuned British single cylinder 4 stroke race bikes, like the Manx Norton. The most successful application of the 2 stroke engine is garden equipment! Strimmers, chainsaws, lawnmowers etc. There must be many millions of them around the world. Used carefully and with good maintenance, good quality oil and fuel, they will last for years. I have one Stihl strimmer that is over 30 years old, still working fine and never needed any parts replacing. Also a Flymo mower with a Tecumseh engine, coming upto 20 years old, same story! I also have several 2 stroke motorcycles, including a BSA Bantam and an MZ, which although small in capacity, have surprisng torque. Two strokes are wonderful technology.
That's a strange way to describe an opposed-piston engine. It's easier to think of two complete engines, each with their head removed, attached to each other... then you use one side just for intake and the other just for exhaust, and of course connect the crankshafts together.
😺👍
Well the worlds largest engines are still 2 stroke powering almost all large merchant ships.
Ah blue smoke. Happy days 😂
No need for O2 sensors 😁
Made before turbochargers were common.
min 1:35 The BMW Isetta wasn't a two-stroke engine 😉
It's Zündapp Janus and It's 2 stroke
2-stroke diesels are the best possible way to convert hydrocarbons into sounds and smells😜
Joe has declared war on all these. Now we have to deal with thermal runaway, and toxic off-gassing, and batteries that cannot be recycled very well. No Li at all, with present tech. can be recovered. It will be looked down on in the future as a bad idea.
You mean Jenocide Joe
... looking at the 'E-Movement', your conclusion is of a very friendly wording ... 🌷:)
"Joe"? The transition began long before he was President and the USA isn't even the main market for EVs. American exceptionalism and ignorance.
The first battery recycling plants are being built, but there was no point until there were enough used batteries to supply them. Who builds a factory to sit idle?
@@Turnipstalk ... hopefully this won't add another debris mountain range to the African landscape. After all 800.000 tons of lead p.a. from conventional car batteries plus a few sets of tires should be sufficient. There is no freshair avenue around Skylla and Charibdis. It is just fair to make everyone aware of that. There only simply is a new line of business. Some people might also still remember 'Love Canal'. I used to work in Londons reinsurance market when 'Superfund' was introduced. Don't tell me markets and shareholders have gotten any wiser since. Thankyou.
Who'd have thought that these polluting stink-factories were so positive for society? Bringing people together... It's good we're rid of the awful things in most countries.
Enough of the sound effects 😮
😂I know right 😂
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Wouldn't it have been good to hear the Commer and Foden lorries, the Auto Union car and the Deltic locomotive instead of "music".
The date of this film is about 1960.
@@cedriclynchYes for less music, athough some of Ron Goodwin's pocket money perhaps diverted here in some places to the BBC Radiophonic Workshop boffins? Clearly you're another connoisseur of lorry two stroke aural delight, which I fully support. Censorship of scooter, Auto Union, Bond and bubble car noises is maybe justified, as I'm still traumatised from the cacophony of our neighbour's erratic and discordant Moskvitch in the early 1970s. The terrifying approaching sounds from a laden Deltic, when climbing Hemerdon Bank in the dark - best experienced with an attendant medical team to deal with the effects of infrasound - should however be on everyone's bucket list.
Lol
Sadly i scrapped my 39yr old yamaha 2stroke in 2022 because the authorities gave me 3000dollars to get rid of it for a cleaner 4 stroke modern engined bike that meets todays emmission requirements🫠
And I didn't. My RX 135 5 Speed along with Suzuki Shogun are the twinkle of my eyes. When they are on the road, they roar. 😊😊😊
@@Nishpaqsh good bikes they are, i rode an rx100 wayyyy back in 1990, she was fast for a little 100cc
@@fidelcatsro6948 I have had RX 100, RXZ, RXG & RX 135 Tiger model bikes 4 speed at different times. Sold each of them at a decent profit.
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Now only RX135 5 SPEED and SUZUKI SHOGUN. These are so much in demand in Indian market that people are ready to shell any amount.
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One will stop driving a 4 stroke if he gets to drive a stock RX 135 5 speed and Suzuki SHOGUN/SHAOLIN.
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