New I-See cuts haulage firms’ fuel bills

The truck industry is searching high and low for solutions that cut fuel
consumption. One method is to use the vehicle’s kinetic energy to propel the
truck. Now Volvo Group under the brand Volvo has developed I-See, which operates
like an autopilot and takes over gearchanging and utilises gradients to save
fuel.
Kinetic energy is the mechanical work needed to reduce an object’s speed to
zero. When an object in motion is slowed down, its kinetic energy has to be
transformed into some other form of energy. When a vehicle brakes, its kinetic
energy is converted into heat. Many manufacturers in the automotive world are
now examining solutions for harnessing kinetic energy instead of releasing it as
surplus heat.

“If kinetic energy can be exploited to a greater extent, it may help cut fuel
consumption. This will benefit both the environment and the industry’s economy,
something that is very important today as fuel costs are becoming an
increasingly heavy burden on many haulage firms,” relates Anders Eriksson, who
was responsible for the development of I-See.

And it is precisely this that Volvo Trucks has succeeded in developing with its
new I-See solution. The system harnesses the truck’s own kinetic energy to
“push” the vehicle up hills. On downhill gradients the same energy is used for
acceleration.

Kinetic energy can save 5 per cent

I-See is linked to the transmission’s tilt sensor and obtains information about
the topography digitally. The fact that the system is not dependent on maps
makes it more dependable since it always obtains the very latest information. I
-See can recall about 4000 gradients, corresponding to a distance of 5000
kilometres.

“I-See is an autopilot linked to the truck’s cruise control, taking over and
handling gearchanges, throttle and brakes on gradients, ensuring they all
operate in the most fuel-efficient way possible. I-See freewheels as much as
possible – so on certain stretches of road no fuel is used at all,” explains
Hayder Wokil, product manager Volvo Trucks.

“In this way fuel consumption can be cut by up to 5%. This figure is based on
the results of simulations and tests on public roads. I-See requires use of the
cruise control, and we know that on average drivers use cruise control about
half the time. For a truck in normal operation, covering 140,000 kilometres a
year, the saving will be about 1000 litres of fuel annually. This makes a big
difference to the haulage firm’s profitability,” says Hayder Wokil.

Biggest effect on small hills

I-See carries out six different operations to utilise the kinetic energy to the
very maximum. For instance, I-See accelerates up hills, remains in a high gear
for as long as possible and freewheels on descents to exploit the truck’s weight
as a propulsion motor.

“I-See works best in undulating terrain. With moderately long and steep slopes,
I-See ensures that you can freewheel for long distances without using the
engine,” explains Anders Eriksson.

“It is this freewheeling capability that makes the system special,” he adds.
When the truck rolls freely, virtually no fuel is used. But in order to
freewheel, a whole lot of data is required.

“It imposes high demands on precision. For instance, you have to know whether
your speed will drop or increase over the next stretch of road. A gradient of
just a few per cent can be the decisive factor,” reveals Anders Eriksson.

Other factors that make a difference are air resistance and the truck’s weight.
All told the system has to keep track of and process a lot of information. Many
truck drivers who test I-See will recognise the driving style it adopts.

“I-See imitates the driving style of good drivers. They utilise the vehicle’s
kinetic energy, accelerate in time and avoid unnecessary gearchanging,” says
Hayder Wokil, and continues:

“But unlike a driver, I-See never gets tired – it’s like an autopilot.”

This allows the driver to focus more on the surrounding traffic and other
aspects of the journey. What is more, progress on the road is more relaxed.

“And an alert driver is a better driver. That’s something we know for sure,”
says Hayder Wokil.

Anders Eriksson also points out that it is not only fuel that is saved.

“I-See reduces brake and tyre wear, for instance. And that naturally benefits
the environment,” he says.

I-See will become available on the market in 2013.

See a film about I-See on http://youtu.be/b98FV0Pblaw

FACTS

I-See has functions for six different scenarios on a gradient:

• It accelerates before the incline starts.

• If you are near the brow of a hill, the system avoids changing gear if
possible. Every gearchange means a drop in speed.

• It does not accelerate when approaching a descent, but instead waits and
utilises gravity.

• It starts freewheeling ahead of an approaching descent.

• It starts braking well before the downhill slope ends, but:

• It releases the brakes at the end of

June 27, 2012

Reporters who want more information, please contact Mårten Wikforss, +46 31-66
11 27 or +46 705-59 11 49

For more stories from the Volvo Group, please visit
http://www.volvogroup.com/globalnews.

The Volvo Group is one of the world’s leading manufacturers of trucks, buses and
construction equipment, drive systems for marine and industrial applications and
aerospace components. The Group also provides complete solutions for financing
and service. The Volvo Group, which employs about 115,000 people, has production
facilities in 20 countries and sells their products in more than 190 markets. In
2011 annual sales of the Volvo Group amounted to about SEK 310 billion. The
Volvo Group is a publicly-held company headquartered in Göteborg, Sweden. Volvo
shares are listed on OMX Nordic Exchange Stockholm. For more information, please
visit www.volvogroup.com or www.volvogroup.mobi if you are using your mobile
phone