10-28-2008, 12:49 PM
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#16 (permalink)
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Batman Junior
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FYI: Green Car Congress: UPS to Purchase 7 Hydraulic Series Hybrid Vans; Prototype Showed 45-50% Improvement in Fuel Economy
Quote:
After two years of road-testing of a prototype, UPS has placed its first order for hydraulic diesel series hybrid delivery vehicles (HHV), becoming the first in its industry to do so.
Disclosing the results of its road testing on Detroit routes for the first time, UPS and the US Environmental Protection Agency (EPA) said the prototype vehicle had achieved a 45-50% improvement in fuel economy compared to conventional diesel delivery trucks. UPS believes similar fuel economy improvements and a 30% reduction in CO2 are achievable in daily, real-world use.
The hydraulic series hybrid, originally developed in a laboratory of the US Environmental Protection Agency (EPA), uses a diesel engine/pump to pressurize and transfer hydraulic fluid to the rear drive pump/motor and/or high pressure accumulator. The hydraulic drivetrain replaces the conventional drivetrain and eliminates the need for a conventional transmission.
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