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Hydraulic Hybrid

[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

Peapod adds two LH hydraulic hybrids delivery trucks to fleet

May 20, 2016

Peapod, the leading online grocer in the US, took delivery of its first two hydraulic hybrid delivery trucks this month. The vehicles, existing Workhorse walk-in vans with GM gasoline engines and equipped with the Lightning Hybrids Energy Recovery System (ERS), are in service on the streets of Chicago and were partially paid for by the Drive Clean Chicago voucher program for clean vehicles.

The trucks, the first hydraulic hybrids in Peapod’s fleet of approximately 130 vehicles in the Midwest, are expected to reduce fuel consumption, reduce brake maintenance costs and cut emissions significantly in Peapod service neighborhoods.

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Lightning Hybrids’ lightweight composite accumulator for hydraulic hybrid systems

July 11, 2015

Lightning Hybrids, developer and manufacturer of hydraulic hybrid systems for medium- and heavy-duty trucks and buses (earlier post), has provided some detail and background on a core component of its system: the hydraulic accumulator, or “mechanical battery”.

In the hydraulic hybrid system, hydraulic pumps and the lightweight accumulator store braking energy; upon acceleration the stored energy provides torque to the wheels. Up to a 35% gain in fuel efficiency in heavy drive cycles is achieved by regenerating the braking energy that is normally wasted to heat, and using this energy instead of the internal combustion engine for acceleration. Lightning Hybrids’ patented hydraulic hybrid system includes high-efficiency hydraulic pumps, a power transfer module, the lightweight accumulator system, a valve block, and a proprietary control system.

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