IBM is helping to develop a hydraulic hybrid (SHH) system -- that promises dramatic
fuel savings and environmental benefits -- replaces the conventional
drivetrain and transmission. The system uses hydraulic pumps and
hydraulic storage tanks to capture and store energy, similar to what is
done with electric motors and batteries in a hybrid electric vehicle.
Shipping giant, UPS, will deploy the first two package delivery
vehicles with the SHH system in Minneapolis during the first half next
year. Eaton, the developer of the SHH system, will monitor the
vehicle's fuel economy performance and emissions. An additional five
vehicles will be deployed later in 2009 and early 2010.
Hydraulics You May Be Familiar With Already
Like many of the components that make up today's vehicles, the
hydraulic hybrid systems are intelligent software intensive systems.
IBM is supplying Telelogic Rhapsody modeling software that helps Eaton
improve quality and save time in the development of these hybrid
systems. Eaton project teams use Telelogic Rhapsody to model the
software that makes the SHH system work. This process allows the
development teams to be more efficient and shorten design cycles.
With this smart system, fuel economy is increased in three ways:
vehicle braking energy is recovered that normally is wasted; the engine
is operated more efficiently, and the engine can be shut off when
stopped or decelerating. Initial trials of the SHH system demonstrated
up to 50 percent improvement in fuel efficiency and one third reduction
in CO2 emissions.
"Using Telelogic Rhapsody software improves the quality of the
application software that is integral to the series hydraulic hybrid
system development process," said Steve Zielinski, chief engineer for
software in Eaton's Fluid Power Group. "IBM's Telelogic Rhapsody
increases communication through graphic modeling, and provides
validation through simulation and automated testing."