United Parcel Services (UPS), had positive progress for energy savings goals. American courier company was planning to use alternative-powered cars to distribute the packets belong to customers. That was a car using hybrid tech hydraulic machine (hydraulic hybrid vehicles / HHV).
In its official statement noted, this effort was part of the social responsibility of the UPS in an effort to save energy. UPS has ordered as many as seven units of HHV to be operated Within the 2009 to 2010. Two of them certainly have been in a garage on the UPS first quarterly next year.
HHV was a technology developed by the U.S. environmental protection agency, EPA (Environmental Protection Agency). This machine was the result of a combination of a diesel engine using a hydraulic system to supply power. Without the driving circuit system (drivetrain) and conventional transmission exploited, this engine could reach a maximum round-efficient all the time.
Scheme of the UPS hybrid car engine
The pattern of work, the power generated by diesel engines will be collected in a high-pressure accumulator through a pump. Where mover of pump motor is connected to the wheels. When the car brakes, the pump motor will work to capture about 70 percent of the energy created from braking. The amount is nearly three times greater than amount captured by a hybrid electric-powered braking system.
UPS was optimistic that, by adopting this engine in the car operational, they could cut the cost of fuel consumption by 50 percent. On the other hand, technology of machine was not widely known yet. it was believed to be able to reduce emissions by 30 percent.
"We're not sure when this car legally be used on the streets of America," said David Abney Chief Operating UPS in these releases. David added, through the release, the UPS was not being declaring that this hybrid hydraulic machine is powerful to save energy. "At least the technology is quite promising," he said.