Nissan Motor Company has announced a new type of gasoline engine
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Re: Nissan Motor Company has announced a new type of gasoline engine
#2This should probably link to the original Reuters article:
http://www.reuters.com/article/us-autos-japan-nissan-engine-...
Re: Nissan Motor Company has announced a new type of gasoline engine
#3Interesting news, The Reuters article[1] they cite has more content than the current article[2], but even the Reuters article looks very PR-like.
The TLDR appears to be: The new engine uses variable compression technology, which [allows] at any given moment to choose an optimal compression ratio for combustion.
> The [new VC-T engine] averages 27 percent better fuel economy than the 3.5-liter V6 engine it replaces, with comparable power and torque. Nissan says the new engine matches the diesel engine in torque.
It will be officially unveiled at next month's Paris motor show
[1] http://www.reuters.com/article/us-autos-japan-nissan-engine-...
[2] http://www.thedailynewsgrabber.com/nissan-on-gasoline-engine...
Re: Nissan Motor Company has announced a new type of gasoline engine
#4Any way to know how they accomplish the variable compression?
Re: Nissan Motor Company has announced a new type of gasoline engine
#5SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works.
https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
Re: Nissan Motor Company has announced a new type of gasoline engine
#6SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works. https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
And a youtube vid:
https://www.youtube.com/watch?v=oxR-3Un6WkU
Re: Nissan Motor Company has announced a new type of gasoline engine
#7SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works. https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
Variable compression? So logical next step is variable octane, right? One tank of 87 and one tank of 93, dynamically mixed in response to changing compression ratio. :)
Re: Nissan Motor Company has announced a new type of gasoline engine
#8SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works. https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
absolutely every company has one of those. I'm familiar with the bmw one: VANOS something. from the 90s.
variable compression is nothing new, just very prone to failure. the other downside was it was much harder to work on the engine, but nobody cares about that anymore.
Re: Nissan Motor Company has announced a new type of gasoline engine
#9SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works. https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
Variable compression? So logical next step is variable octane, right? One tank of 87 and one tank of 93, dynamically mixed in response to changing compression ratio. :)
not sure if joking or not, but the injection map on your ecu does that.
Re: Nissan Motor Company has announced a new type of gasoline engine
#10SAAB was working on one of these years ago before GM flew that company into the ground. This link gives you an idea of how it works. https://en.wikipedia.org/wiki/Saab_Variable_Compression_engi...
absolutely every company has one of those. I'm familiar with the bmw one: VANOS something. from the 90s. variable compression is nothing new, just very prone to failure. the other downside was it was much harder to work on the engine, but nobody cares about that anymore.
No, that's totally different. That's just variable cams(e.g. what Honda calls VTEC).
This is actually changing the combustion chamber geometry.