Recent Topics
Finally Let the HF/Greyhound Franken Mower Go
by javacontour
14 minutes 20 seconds ago
You know its hot when...
by Chris142
21 minutes 53 seconds ago
2015 Mazda 3 - Exhaust CAM Actuator Seal - HM Oil?
by buster
Today at 01:16 PM
2009 Honda Civic starter reman brand quality
by bmwpowere36m3
Today at 12:07 PM
2005 Ford Escape engine replacement work V-6
by oilboy123
Today at 12:03 PM
Stuck license plate screws
by Dave Sherman
Today at 11:56 AM
ask for an extra key when buying a new car?
by edwardh1
Today at 11:37 AM
2018 Hyundai Kona AWD 1.6 Turbo
by Mainia
Today at 11:37 AM
1999 Explorer Ignition Key will not turn
by sleepery
Today at 11:37 AM
Ethanol/Farmers ad on TV
by loneryder
Today at 11:27 AM
Black box tale from used car salesman, whaa???
by csandste
Today at 10:10 AM
Fix it or trash it?
by chartrue2
Today at 09:01 AM
Can you identify this?
by buster
Today at 09:01 AM
Ford Explorer Sport Trac reliable?
by Kurtatron
Today at 08:31 AM
16 RAM 6.4 Hemi-Mobil 1 0w-40 ?
by smokingun45
Today at 08:26 AM
Used Jaguar F-Type V6 or C7 'Vette
by Cujet
Today at 08:17 AM
Auto industry lobbies for a 91 octane standard
by skyactiv
Today at 07:59 AM
quick ? on home wall light switch
by edwardh1
Today at 07:00 AM
Regular vs "Toothed" V belt, which is better?
by berniedd
Today at 06:46 AM
Tui on song.
by Silk
Yesterday at 11:44 PM
Newest Members
tweak999, Alex11111, 2015Corolla, HBF, Dat2109
65520 Registered Users
Who's Online
53 registered (Bandito440, AVB, 2015_PSD, bbhero, Alex11111, 7 invisible), 1700 Guests and 33 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65520 Members
67 Forums
287407 Topics
4794856 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4709084 - 03/27/18 11:35 PM Nissan/Infiniti VC-Turbo Engine
MolaKule Offline

Registered: 06/05/02
Posts: 19138
Loc: Iowegia - USA
If this has been discussed before please ignore.

But Nissan/Infiniti will be introducing this new engine soon, a Turbo-Charged Variable-Compression ratio engine.

Interesting mechanical setup.

#4709207 - 03/28/18 06:54 AM Re: Nissan/Infiniti VC-Turbo Engine [Re: MolaKule]
Snagglefoot Offline

Registered: 12/31/17
Posts: 1911
Loc: SE British Columbia, Canada
Very interesting. Thanks for sharing. They could have done a better job to explain how turbos work better with low compression but otherwise easy to understand. A few exrtra do-dads for your oil to care of.

#4709317 - 03/28/18 08:44 AM Re: Nissan/Infiniti VC-Turbo Engine [Re: MolaKule]
CT8 Offline

Registered: 10/09/14
Posts: 11233
Loc: Idaho
That is a huge change in the auto engine design.
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

#4709502 - 03/28/18 11:38 AM Re: Nissan/Infiniti VC-Turbo Engine [Re: MolaKule]
Dyusik Online   content

Registered: 09/26/14
Posts: 2012
Loc: US-WA
Looks like more things that can potentially fail. Just give me a two stroke diesel and let me go home.
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K VR1 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

#4709575 - 03/28/18 12:44 PM Re: Nissan/Infiniti VC-Turbo Engine [Re: MolaKule]
nthach Offline

Registered: 01/02/04
Posts: 3994
Loc: California
The turbo looks like it'll provide smoother boost - it looks like a blended dual-scroll design without having to resort to VGT(Honeywell) or VNT(Cummins/Holset), keeps in-house with IHI or Hitachi. Interesting linkage, it does remind me a little bit of Honda's VTEC, but also how ovalized chain rings are now being used on bikes.

I'm thinking Nissan looked at how Saab wanted to make a variable-displacement engine - but wanted to stick to a conventional block without a bellows. The VC mechanism fits in the same space in the crankcase as a balance shaft but given Nissan's proclivity for cost cutting...

#4709714 - 03/28/18 02:47 PM Re: Nissan/Infiniti VC-Turbo Engine [Re: MolaKule]
JTK Offline

Registered: 08/14/03
Posts: 10659
Loc: Buffalo, NY
It does seem like a lot more components for the engine to fling around. More bearings and friction, but with the elimination of balance shafts it's perhaps not so bad. The turbo definitely adds additional complexity.
2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)