Chevrolet Cruze RVC Technology to Boost Fuel Economy

  1. Welcome to GM Inside News Forum – General discussion forum for GM

    Welcome to GM Inside News Forum - a website dedicated to all things GM.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join GM Inside News Forum today!
     
Results 1 to 15 of 15

Thread: Chevrolet Cruze RVC Technology to Boost Fuel Economy

  1. #1
    1.8 Liter ECOTEC
    Join Date
    Jun 2010
    Location
    Canada
    Posts
    46
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Chevrolet Cruze RVC Technology to Boost Fuel Economy
    Sanjeev Ramachandran
    March 29, 2011

    http://www.devicemag.com/




    With demand for ultimate fuel economy proving to be the main factor in automobile purchase decisions these days, Chevrolet has tread on to a new terrain by employing a new technology for their Cruze.

    Known as Regulated Voltage Control (RVC), the new patented technology from General Motors has been brought in so as to improve the fuel economy of the vehicle. The technology works in various steps.

    The power that runs from the alternator to the battery of the vehicle is reduced from 14 volts to 12.8 volts under normal driving conditions with the RVC.

    The alternator converges on the power on the vehicle’s electrical loads, which in turn, avoids charging the battery with current that is not required by it. Thus by reducing the voltage to the battery, the demand on the alternator is also reduced.



    [Read more]

  2. Remove Advertisements
    GM Inside News
    Advertisements
     

  3. #2
    2.8 Liter Turbocharged V6 Dave B's Avatar
    Join Date
    Dec 2006
    Location
    Upstate NY
    Posts
    977
    Thanks
    694
    Thanked 82 Times in 58 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    So this is just being used on the Cruze?
    ------------------------------
    07 Impala 3.5L VVT ..ONSTAR ROCKS... (GF's car)
    99 Cutlass 3.1L
    94 GMC Jimmy
    Many GM Vehicles Over The Years
    Some MOPAR stuff with Mods...Hidden Content

  4. #3
    1.8 Liter ECOTEC
    Join Date
    Jun 2010
    Location
    Canada
    Posts
    46
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Seems like this has been used in the Cruze all along, it was just never mentioned.

    Here's the link for the GM press release yesterday:

    http://media.gm.com/content/media/us...Mar/0328_Cruze

  5. Remove Advertisements
    GM Inside News
    Advertisements
     

  6. #4
    4.6 Liter Northstar V8
    Join Date
    Jul 2005
    Location
    Canada :)
    Posts
    1,948
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    An entire 8 miles per tank! I guess a little is better than nothing. But to get that, just accelerate a little bit slower if you're that worried about gas mileage.

  7. #5
    6.2 Liter LS9 Supercharged V8 calgaryhhr's Avatar
    Join Date
    Apr 2008
    Location
    Calgary
    Posts
    6,218
    Thanks
    0
    Thanked 246 Times in 152 Posts
    My Ride
    06 Chevy HHR 09 Ford Flex Ltd

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by give_it_all_ View Post
    An entire 8 miles per tank! I guess a little is better than nothing. But to get that, just accelerate a little bit slower if you're that worried about gas mileage.
    Works out to be around 0.5 miles per gallon, I think. Not very exciting at all.
    Research is what I am doing when I don't know what I am doing.

  8. #6
    2.8 Liter Turbocharged V6 ChevroletGuy's Avatar
    Join Date
    Jun 2008
    Posts
    757
    Thanks
    0
    Thanked 2 Times in 2 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Every little bit helps though. I wish they would use eAssist on the Cruze, that would get some great mileage.
    Taking Back America, One Chevy at a Time

  9. #7
    3.0 Liter SIDI V6
    Join Date
    Mar 2008
    Location
    California
    Posts
    719
    Thanks
    2
    Thanked 97 Times in 59 Posts
    My Ride
    2011 Grandsport

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by give_it_all_ View Post
    An entire 8 miles per tank! I guess a little is better than nothing. But to get that, just accelerate a little bit slower if you're that worried about gas mileage.
    Then you would get 16 miles per tank. Whatever gets you better gas milage is a good thing. Every little bit helps.

  10. #8
    5.3 Liter Vortec V8 flatblackstrat's Avatar
    Join Date
    Oct 2010
    Location
    Japan
    Posts
    1,263
    Thanks
    0
    Thanked 0 Times in 0 Posts
    My Ride
    2011 Kawasaki Er-4n

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by ChevroletGuy View Post
    Every little bit helps though. I wish they would use eAssist on the Cruze, that would get some great mileage.
    I believe it was mentioned on Autoline Detroit that the eAssist technology would not do much for the Cruze when the "physics" are factored in. Also the main problem seems to be transmission inefficiency over anything right now comparing the Eco to the LT1. And what little eAssist might do might not warrant the amount of money it would add to the sticker. Stop start technology might be a better start... no pun intended.
    Hidden Content Originally Posted by t-rex Hidden Content
    Oh come on. Don't tell me you don't dress missus sol (solwoman?) up as Wonder Woman, build a twin towers out of mashed potatoes in the kitchen, have the kids fly remote control miniature jets (while dressed in Arab garb) into them while you do your best Will Smith impersonation from "Independence Day" ??
    11 Kawasaki Er-4n
    09 Mercedes C200
    07 Dodge Nitro RT
    06 Mercedes B170
    05 Dodge Stratus SXT
    03 Tiburon GT 6SPD
    96 Dodge Avenger ES
    91 Pontiac Grand Prix STE

  11. #9
    6.2 Liter LS3 V8 Premium Member WishIhadatruck's Avatar
    Join Date
    Jul 2005
    Location
    Grand Rapids, MI
    Posts
    3,038
    Thanks
    301
    Thanked 141 Times in 94 Posts
    My Ride
    2014 Cruze Eco MT

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by firefox View Post
    Then you would get 16 miles per tank. Whatever gets you better gas milage is a good thing. Every little bit helps.
    Every little bit indeed. If every idea that "only" netted .5 mpg was thrown under the bus we'd never get anywhere. A lot of the improvements over the years came from incremental improvements, not big leaps. And big leaps are even bigger when done on top of all the small things.
    Current:
    '96 Buick Roadmaster Wagon
    '14 Cruze Eco Manual
    '03 2500 8.1L Suburban
    Hidden Content Hidden Content Hidden Content

  12. #10
    6.2 Liter LS9 Supercharged V8 calgaryhhr's Avatar
    Join Date
    Apr 2008
    Location
    Calgary
    Posts
    6,218
    Thanks
    0
    Thanked 246 Times in 152 Posts
    My Ride
    06 Chevy HHR 09 Ford Flex Ltd

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by WishIhadatruck View Post
    Every little bit indeed. If every idea that "only" netted .5 mpg was thrown under the bus we'd never get anywhere. A lot of the improvements over the years came from incremental improvements, not big leaps. And big leaps are even bigger when done on top of all the small things.
    Very true. Even small gains can be beneficial if they can be executed without much cost. At some point you get to a level of diminishing return where additional modifications become too expensive or hinder performance too much and don't delivery much fuel economy gain.

    I'd really like to see how much of a difference there would be if the Cruze had direct injection and a DSG transmission.
    Research is what I am doing when I don't know what I am doing.

  13. #11
    Firebird Concept (the turbine one) F14CRAZY's Avatar
    Join Date
    May 2006
    Location
    Grand Rapids, MI
    Posts
    11,898
    Thanks
    263
    Thanked 845 Times in 468 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Didnt the Uplander and the CSV's have such a thing that would drop the voltage enough to make the headlights dim?
    '07 Subaru Forester 2.5X 5MT. Bought new. 197k miles. '05 Dodge Durango Limited Hemi AWD. Mom bought new. 102k miles. '74 Buick LeSabre Luxus convertible. 455-4/7.5L. '89 Buick Reatta. 3800 SII L67/F40 six speed swap to be completed someday. Wife's: '07 Subaru Forester XT. World Rally Blue Mica.

    '87 BMW K75c. '87 Kawasaki 650SX. '85 Bayliner Capri 1952. '71 Chris Craft Coho 33'. '70? Amphicat 6x6 AATV.

  14. #12
    6.2 Liter LS3 V8
    Join Date
    Aug 2007
    Posts
    3,394
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by WishIhadatruck View Post
    Every little bit indeed. If every idea that "only" netted .5 mpg was thrown under the bus we'd never get anywhere. A lot of the improvements over the years came from incremental improvements, not big leaps. And big leaps are even bigger when done on top of all the small things.
    I know LED running and head lights reduce energy requirements when lighting is required. Probably at least 75%.

    Does anyone have a number for how much potential improvement in mpg?

    The one I have puzzled over is a clutched diect driven generator/alternator (with a smart regulator ... "RVC"?) in conjunction with a sealed electric A/C compressor (probably MORE efficient and durable).

    Then replace the cooling system thermostat with a thermostatically controlled electric water pump, which is only active when water jacket is above temperature setpoint.

    Since power steering is already going electric ... wouldn't ALL belt driven parasitic losses have been eliminated?

    Any guesses what that might do to fuel consumption ... or ... available HP?

    How much fuel would that save?

    Any "freed up" HP or torque?

    Just some things I have been wondering about ...
    It is important what WE use as our "moral compass" and ...
    the "measuring stick" chosen for judging progress/success as well.


    44 mpg by 2010 ... 2013?

  15. #13
    6.2 Liter LS3 V8
    Join Date
    Aug 2007
    Posts
    3,394
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by F14CRAZY View Post
    Didnt the Uplander and the CSV's have such a thing that would drop the voltage enough to make the headlights dim?
    Almost any system that varies the primary vehicle voltage about 1.5 volts over full range of operation should probably be recognizable in ANY incandescant headlight by intensity & color.

    It occurs to me that one of the major ENERGY SAVINGS occurring as a result of tighter regulation of generated voltage ... is in "secondary voltage regulators" for ALL microprocessors and related semiconductor systems including entertainment.

    Who knows how much energy savings that could be when current computer speeds and networks are considered?
    It is important what WE use as our "moral compass" and ...
    the "measuring stick" chosen for judging progress/success as well.


    44 mpg by 2010 ... 2013?

  16. #14
    2.5L Iron Duke WopOnTour's Avatar
    Join Date
    Apr 2004
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    FYI
    RVC has been used on almost all GMs for quite a few years now...
    Take a look at the negative battery cable on your GM.
    If it has a curent sensor "clamped" around the cable, near the battery, then it's RVC.
    HTH
    WOT
    ***************************************
    Hidden Content on Twitter
    Hidden Content

  17. #15
    Firebird Concept (the turbine one) johnstarnes's Avatar
    Join Date
    Apr 2006
    Location
    Tampa
    Posts
    13,337
    Thanks
    5,697
    Thanked 848 Times in 469 Posts

    Re: Chevrolet Cruze RVC Technology to Boost Fuel Economy

    Quote Originally Posted by WishIhadatruck View Post
    Every little bit indeed. If every idea that "only" netted .5 mpg was thrown under the bus we'd never get anywhere. A lot of the improvements over the years came from incremental improvements, not big leaps. And big leaps are even bigger when done on top of all the small things.
    Great post, thanks!
    "The only normal people are the ones you don't know well". unknown


    Hidden Content

    Hidden Content

    Hidden Content

  18. Remove Advertisements
    GM Inside News
    Advertisements
     

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.1.2