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| Honda has come up with the most amazing 4-wheel-drive system, not for
off-roaders but to improve the handling and stability of fast cars. It is being
used first in the new Acura RL (Honda Legend). Why is it so advanced? This
SH-AWD system has the potential to increase cornering powerkobe bryant shoes for sale and
cornering safety by leaps and bounds. It will be ideal for supercars as well as
luxury coupes.(More information about supercars at fast-autos.com/supercars.html
) First, it allows the amount of power sent to the wheels to be varied from 30%
front and 70% rear to 70% front and 30% rear. True, some other systems get near
that, but this allows the system to adjust itself to completely different
conditions. On top of that, it can alter the torque from zero to 100% to the
left or right rear wheel. In other words, all the power can one to the right
wheel one minute, and if necessary can be reversed so that all the power goes to
the other wheel in an instant. This might be needed in slushy or snowy
conditions, where there was a patch of bare road for a bit on one side offering
good grip, but a bit later on a bare patch on the other side. In addition to
those features, the outer rear wheel can be speeded up so that it goes faster
than the inside wheel! All done continuously depending on conditions. A few
years ago this would have considered desirable, but science fiction. More power
to the rear wheel for acceleration Confused? Well, let's start with the
front-to-rear power. When you accelerate, the weight of the car is thrown on to
the back wheels by the force of acceleration, so you want more power to go to
the back wheels - if it all goes to the front you get wheelspin. When cornering,
you generally want as much or more power to the rear wheels. SH-AWD does that.
On the other hand, when you are cruising along, you want more power to the front
wheels as this increases stability. SH-AWD also does that. More power to outer
rear wheel for better cornering The side-to-side variation in power is used to
improve cornering power and stability. For example, when you accelerate through
a corner, extra power through the outer rear wheel counteracts understeer,
letting the car corner on rails. In fact, stability control systems used on many
cars now do this by reducing the amount of torque sent to the inner wheel - this
means that you actually corner slower than you could do. kobe bryant shoes online SH-AWD
lets you corner faster. On the over-run, you don't need that, and less power is
sent through the outer wheel for optimum stability. But that isn't enough
because when a car corners, the outer wheels have to travel further than the
inner ones - by 5-10% on very tight corners, so the outer wheel normally goes
slower. Honda overcomes this with some gears in the back axle gear set which
actually drive the outer wheel faster when cornering! This improves
maneuverability and cornering at low speeds. Electro-magnetic multi-plate
clutches All this is accomplished by multi-plate clutches operated
electro-magnetically - a world first - and the gear/clutch set used for
acceleration. In fact, these gears also serve as the rear differential. An
advantage of the electro-magnetic clutches is that the electronic controller
does not need to control a hydraulic actuation system as used normally but an
electric actuator - this reduces cost and weight. Is this the best thing since
sliced bread? For the person who wants to have stability and control, and
doesn't want to know what is happening to the car -yes. Such a system is bound
to reduce the input the driver gets from the road. He will be less aware of
whether the surface is slippery, or kobe basketball shoeswhether the
car is understeering more than usual because the SH-AWD system is correcting
things all the time. |
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