Rotary machine Piston Ring Tri Lobique

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by Remundo » 24/11/14, 18:16

Hi Pascal

These axial piston pumps are well known ...

They are volumetric machines, and one regulates the flow by tilting a plate, or the plate is fixed and one inclines all the rotating barrel ...

We must be able to adjust the compression ratio with that. The flow can be corrected by varying the speed of rotation of the barrel.

When the plate is orthogonal to the axis of rotation of the barrel, there is zero flow, even if it turns.

found it on the fly on Youtube
http://www.youtube.com/watch?v=_CnIP85oY3o

et
http://www.youtube.com/watch?v=qxZFSNITK-c
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variable compression




by Pascal HA PHAM » 24/11/14, 20:52

good evening raymond,
nice animations!
Hold, a RENAULT patent on a 4 variable compression cylinder that dates from June 2003 .... complex but without anteriorities!
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:frown:
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the BRUEY Raymond of 1985




by Pascal HA PHAM » 24/11/14, 21:48

A beautiful patent filed by BRUEY Raymond the 10 May 1985 ...
He claims few things but would have deserved the variable compression in claim N ° 3:
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"It's as beautiful as it is simple, was there a prototype?"
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1969 clip on the GENERAL MOTORS research center




by Pascal HA PHAM » 25/11/14, 09:27

Hello,
1969 was just before the first oil crisis: research carried out by GENERAL MOTORS in terms of clean & innovative vehicles was going well:

https://www.youtube.com/watch?v=pfL2f1l0Ktg#t=486

Astonishing no? from strirling to electric vehicles to steam or gas turbine engines ......
this GM clip dates from 45 years: the awareness of pollution is already very palpable, since we have the clear impression to have declined in terms of investment in research and fundamental awareness to better ensure the future of our life on the planet!
: Cry:
NASA was also conducting research and had equipped STIRLING Phillips Siemens engine vehicles with 80 HP:

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The story does not tell what became of all these beautiful things
: Cry:

Origin: link to the article published in a site specializing in machining and renewable energies:
http://www.usinages.com/energies-renouv ... 90-15.html

A+
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by Remundo » 25/11/14, 10:09

ah machines with variable compression ratio

I had published on econo a state of the art.

Edit by Remundo
Look at this link, it's fine
https://www.econologie.info/share/partag ... jN2iva.pdf
Figures 7 and 8, from the same family as the patent Renult / Raymond BRUEY

and that too, with beautiful colors
https://www.econologie.info/share/partag ... YJ3CbM.pdf


It is quite common to introduce additional mobility into the traditional linkage of the piston / connecting rod / crankshaft.

This mobility must then be restrained by a controllable mechanism. There are many proposals.

As for the Stirling machine mounted on a car, GM's research was not focused enough on the ELECTRIC VEHICLE.

The Stirling is very unsuitable for a direct mechanical transmission to the wheels. It is a stationary machine to be effective.

This stationarity is perfect for charging a battery pack, permanently.

With a Stirling engine, plus an electric car, you can drive with just about anything, including dry plants to burn in the Stirling boiler.

@+
Last edited by Remundo the 25 / 11 / 14, 11: 29, 2 edited once.
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there is more than 45 years




by Pascal HA PHAM » 25/11/14, 10:24

Remundo wrote:ah machines with variable compression ratio
It is quite common to introduce additional mobility into the traditional linkage of the piston / connecting rod / crankshaft.
This mobility must then be restrained by a controllable mechanism. There are many proposals.
@+

Many proposals: it's ok but ...
BALANCE SHEET / QUESTION:
today what real applications of all these proposals ... is there at least one that has had an industrial outlet (successful marketing of a variable compression engine?)

:?:

Remundo wrote:As for the Stirling machine mounted on a car, GM's research was not focused enough on the ELECTRIC VEHICLE.
The Stirling is very unsuitable for a direct mechanical transmission to the wheels. It is a stationary machine to be effective.
This stationarity is perfect for charging a battery pack, permanently.
With a Stirling engine, plus an electric car, you can drive with just about anything, including dry plants to burn in the Stirling boiler.
@+


Absolutely Raymond!
which does not prevent to affirm that there are 45 years and more, one already did very beautiful things in terms of innovating technology:
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Otherwise the firm Phillips also equipped a submarine with a STRILING thruster ...
Helium gas I think I remember? go a new axis of investigation

waiting :

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link to Swedish AIP submarines equipped with 2 STIRLING machines running with liquid oxygen to recharge the batteries:
http://zone.sousmarins.free.fr/Sous-mar ... robies.htm
EXTRACT:
The principle of the Kockums AIP system is based on the engine that Stirling invented more than a century ago. The Stirling engine works as a heat pump that serves as a power converter in the AIP system developed by Kockums. The Stirling engine burns diesel fuel and pure oxygen in a separate combustion chamber. The combustion takes place at a pressure which is higher than the pressure of the surrounding sea thus allowing the exhaust gases to be discharged directly into the sea. The combustion process is continuous. Oxygen is stored in liquid form in cryogenic tanks. The diving endurance is mainly determined by the amount of oxygen stored. Stirling combustion chamber exhaust is cooled to a low temperature to minimize the infrared signature. The Stirling cycle also minimizes cyclic torque variations and provides low noise and vibration levels compared to those emitted by internal combustion engines. Acoustic signatures of submarines equipped with Stirling AIP systems are weak.

Today (2000), three Gotland-type submarines (Gotland, Uppland, and Halland) are equipped with Swedish engines using the Stirling cycle, which use liquid oxygen and diesel fuel. The Gotland are powered by hybrid diesel-electric units, with the Stirling engine supplementing the conventional diesel-electric system. The Stirling engine drives a generator that produces electricity for propulsion and / or to charge the boat's batteries. The Gotland has been delivered in 1996. The dive time (without snorkel) for this submarine of 1500 tons is 14 days at five knots. He is armed by five officers and 28 crew members. Kockums now offers the T-96 submarine for export for the price of 100 million dollars each.

"a good bath to stay in"
: Mrgreen:
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wire cutting




by Pascal HA PHAM » 25/11/14, 12:28

let's go back to wire cutting by electro erosion of an EMGC:
BEFORE:
transformation of the paper plane into digital plane in machine language.
The aluminum block is pre-drilled
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WHILE :
the aluminum block is clamped on the mobile table of the machine in the bath of extra pure liquid, the flash point is visible = where the material is decomposed (between the stretched wire which is unwound and the block of metal) .... it takes more than 3 hours to make the 60 cm contour profile to cut (3 mm minute)
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AFTER:
2 EMGC nested / micronized with their negatives next to them (what's left of the aluminum blocks)

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by marcel » 25/11/14, 16:34

Three hours for a play! In fact I do not know if it's short or long, but there must be a good waiting room ....!

Marcel
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it's short




by Pascal HA PHAM » 25/11/14, 17:12

Marcel wrote:Three hours for a play! In fact I do not know if it's short or long, but there must be a good waiting room ....!
Marcel


It's short :
the pilot / programmer of the machine starts cutting at the end of the day before leaving home and finds the room almost finished the next morning when he attacks his day.

If he has programmed his thing, in the early morning machine stopped at the end of the program, the test no longer holds the negative (remaining block) than by an isthmus matter wanted, a few mm, to prevent the event ended come off and fall (or cross in the very last mm).
The pilot cuts the small rest in quasi-manual control, having well constrained the test by the middle

It is longer in stainless steel = speed of 1 mm per minute for the same EMGC profile, but no change for the pilot, the piece is finished later in the night and that's it.

The cost of machining is then equal to the cost of the block of material + the power consumption of the machine + its damping cost pro rata tamporis.

NOTE:
the speed of advance is judiciously chosen, the slower it is, the less intensity of current is required and therefore, the finer the disintegration of the metal = with a weak current and a distance between wire and material small, a finishing licking can remove 2 microns of remaining thickness = equal to the radius of the spark / disintegration "cylinder" .... it is TOP as a result but you also need a super talented machine pilot who knows how to resume & modify his machine program after the first cutting pass!
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"Z" crankshaft




by Pascal HA PHAM » 25/11/14, 21:30

Good evening,
another nice patent filed 32 years ago .... on July 21, 1982 by Jean Bernard FISCHER & Claude PELLERIN.
With its "Z" crankshaft, it will surely remind Yves of something!

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The pistons are arranged in a peripheral barrel ... and it is possible on both sides please!

"it's simple and concise" bravo Gentlemen
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