Audi Patents Details Active Aero Wheels, Electric Quattro All-Wheel Drive System
February 10, 2014 9:17 AM
comment(s) - last by
Patent also shows aerodynamic wheels
Although there are numerous patents that get filed and never applied to real-life products, a couple of a few patents from automaker Audi have turned up that are reportedly going to be used in a production vehicle within the next two years.
The patents are for “active” aerodynamic wheels and an electric all-wheel drive system. The patent for the wheels shows a hinged flap between the spokes that move over the spokes of the wheels as speed increases. Once fully deployed, the hinged flaps create a flat wheel surface, reducing drag.
Active Wheel Shutters on the Ford Atlas Concept
Audi says that the fully enclosed wheels smooth the airflow and help improve the aerodynamics of the vehicle. When the car starts to slow down, the flaps reopen. The flaps are also temperature sensitive and if the brakes become too hot, the flaps open to allow cooling air inside.
It's hard to imagine the extra complexity of this sort of wheel justifying any fuel efficiency improvements gained by better aerodynamics, but the Germans are known for using overly complex electrical/mechanical systems.
Ford showed a
similar active flap system with its Atlas concept truck at the 2013 Detroit Auto Show
, but that feature didn’t make it into the
all-new 2015 F-150
Audi Quattro LaserLight Concept
The other Audi patent is for electric all-wheel drive technology, outlining a system with an electrically driven rear axle. The patent is for software systems that use sensors in the wheels to detect when the wheels break traction on slippery surfaces.
The patent outlines a system that would use regenerative braking that varies according to road conditions. The sensors would detect speed differences between the front wheels and rear wheels to determine how much braking force is appropriate.
This article is over a month old, voting and posting comments is disabled
RE: Complex nonsense!
2/11/2014 3:39:44 PM
Works fine on the Model S and all current EVs.
RE: Complex nonsense!
2/11/2014 10:07:34 PM
Nissan Leaf is FWD. Spark EV is FWD. Volt while not strictly speaking an EV is FWD. So not all current EV's regenerate through the rear wheels. The article wasn't about EV's but a hybrid. Front wheel only regen has more potential.
A number of factors will work against the effectiveness of rear wheel only regen. The vehicle featuring the electric rear axle will be a modified front wheel drive vehicle with a substantially forward weight bias. Less weight on the rear wheels means that less braking is able to be done by the rear wheels. Weight shifts forward during braking i.e. off the rear wheels meaning less braking is able to be done by the rear wheels. This would translate to a system capable of fairly low rates of deceleration under regenerative braking.
RE: Complex nonsense!
2/12/2014 4:38:19 PM
It occurs to me that there are factors which will mitigate these effects in the Model S. The model S isn't a converted FWD car so it doesn't have the forward weight bias. A higher portion of the vehicle weight is carried by the rear wheels. In fact 52% of its weight is born by the rear wheels so it has a slight rearward weight bias. The model S having its battery pack in the floor of the car has a very low center of gravity. This has the effect of reducing weight shifts during braking (and accelerating and cornering) to a minimum.
Tesla is developing an AWD version of the model S which should have very effective regenerative brakes.
"If a man really wants to make a million dollars, the best way would be to start his own religion." -- Scientology founder L. Ron. Hubbard
2015 Ford F-150 Loses 700 Pounds, 95% of Body Structure is Made of Aluminum Alloys
January 13, 2014, 12:26 AM
Ford Atlas Concept Previews More Efficient Next Generation F-150
January 15, 2013, 2:13 PM
2017 Porsche Panamera: I’ll Take Three of These.
July 24, 2016, 6:44 PM
Ford, Toyota, and Universal Pictures Celebrate "Back to the Future Day' in Style
October 21, 2015, 4:19 PM
Consumer Reports Flexes Muscle, Hits Slumping Tesla Motors Stock
October 20, 2015, 4:13 PM
Debunked: Beneath the Lies, Nigerian "Pee Generator" Is Still Pissing Into the Wind
October 19, 2015, 7:53 PM
Hot Air? President Obama, G7 Pledge to Eliminate Most Fossil Fuel Use by 2100
June 8, 2015, 5:40 PM
Study Predicts Self-Driving Vehicles Could Rake in Billions
March 6, 2015, 8:34 AM
Most Popular Articles
iPhones May Get Curved Screens Next Year
August 24, 2016, 6:45 AM
Drones at the Airport
August 26, 2016, 5:00 AM
5 Easy Ways to Lower Blood Pressure By Monique C. Bethell, Ph.D.
August 25, 2016, 8:00 AM
2 NEW PlayStation 4 Models - Unveiling September 7th
August 23, 2016, 6:23 AM
First Apple Computer Auctions for $815,000
August 27, 2016, 7:51 AM
Latest Blog Posts
First Self-Driving Car debut on the streets of Singapore
Aug 28, 2016, 4:10 PM
Coming Soon - Drones and Airports
Aug 24, 2016, 12:40 PM
SolarCity’s Gigafactory: A Milesone in Emerging Technology by Lily Emamian - 15 August 2016
Aug 15, 2016, 6:30 AM
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information