MCE-5, the VCR-i engine mounted in a Peugeot 407

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Janic
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Janic » 27/05/16, 09:21

the site has not moved, the latest news is from 2013. Peugeot, like the others, let the MCE5 sleep, at least, with the all-electric rush that becomes fashionable and will deflate like the previous times. Another possibility in many similar cases (such as for the MDI compressed air vehicle) is to wait until the patent falls into the public domain to avoid paying royalties.
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Christophe » 27/05/16, 09:25

The last information on this subject dates from 2011, PSA would have bought the patent to leave it "in a drawer" then?
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Janic » 27/05/16, 11:30

MCE-5 DEVELOPMENT presented the results of its VCR and VVA coupling study at the SIA conference "Spark Ignition Engine of the Future" - December 4 and 5, 2013
Paul FERREY, Doctor Fluid mechanics, presented in Strasbourg the results of its study on the benefits of the combination of variable compression ratio technology and variable lift of the intake valves for internal combustion engines. The virtuous coupling of these two technologies and a very high rate of expansion allows higher consumption gains than the sum of the isolated gains, and this, in all cycles of consumption.
PRESS INFORMATION FROM 29 JANUARY 2013
100 million investment, cumulative fund raising of € 11 million in 2012, 10 planned hires, a marketing goal in 2013, the "Made in France" is doing well at MCE-5 DEVELOPMENT.
Read more...


The last information on this subject dates from 2011, PSA would have bought the patent to leave it "in a drawer" then?


I do not think (but I'm not in the secret of the gods), the interest of Peugeot seemed real and the tests were coming to an end with interesting results; but the invasion of the electrical everything, returned it, probably, in the second plan, (under the elbow in case or!) On the other hand to make the pleasure last until the end of the 20 years of the patent, it is a classic in industries. Intellectual protection can put sand in this gear.
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Gaston » 27/05/16, 11:36

Perhaps also that the "standard" downsizing brought enough without having to resort to such a major modification of the engines. :?:
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Christophe » 27/05/16, 11:59

Yes Gaston but one does not prevent the other ... after all obviously a question of cost / earnings ...

If the motor is multiplied by price 2 to 10% gain in consumption, not that interested manufacturers ... then there are industrial inertia, and reliability also taken into account (more is less complex it lasts a long time my mom told me)
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Christophe » 27/05/16, 12:01

Janic wrote:
Read more...


It lacks the link Janic ...
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Gaston » 27/05/16, 12:02

Exactly.
If we reach the objectives with a known and controlled technique, is it worth to try to exceed them at the cost of expensive investments (and significant risks) :?:
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Janic » 27/05/16, 18:05

It lacks the link Janic ...

http://www.mce-5.com/news/index.php
http://www.mce-5.com/news/communiques-de-presses
gaston
the test vehicle is downsizing too. We must read the whole site, very well done elsewhere, which explains and argues about the interest and the reduced cost of adding this technique, relatively simple.
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Remundo » 16/08/16, 11:14

seen on Nature engine this morning

Infiniti takes over Nissan's VCR kinematics : double linkage, compression ratio set by eccentric adjustment.
Nissan_VCR_doublembiellage.JPG
Nissan_VCR_doublembiellage.JPG (34.88 Kio) Viewed 4920 times

Source: here page 5

Infiniti's proposal
Image
Note that Infiniti proposes to couple the adjustment shaft to a "Harmonic Drive" : it is a system with deformable toothed wheels which theoretically makes it possible to very finely adjust the angle of rotation.


For those who are not familiar with VCR, here is a small Blédina of the main variable compression ratio systems for piston machines (but not exhaustive)
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Re: MCE-5, the VCR-i engine mounted in a Peugeot 407




by Christophe » 16/08/16, 11:47

This configuration seems to me inspired by the cycle of Aktinson used in toyota hybrids since now almost 20 years: https://fr.wikipedia.org/wiki/Cycle_d%27Atkinson
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