[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.]
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.
Emissions testing shows Lighting Hybrids hydraulic hybrid drive delivers significant reduction in NOx, up to 18% improved fuel consumption
April 21, 2015
|The LH gasoline hydraulic hybrid shows an extreme reduction in NOx compared to a diesel baseline. Source: Lightning Hybrids. Click to enlarge.|
Lightning Hybrids (LH), a provider of hydraulic hybrid drive systems for fleet vehicles such as shuttle buses, delivery vehicles and work trucks (earlier post), has released some results from its ongoing emissions testing with SGS Environmental Testing Corporation. Broadly, the test results show significant reductions in NOx, particularly against a non-hybrid diesel baseline, and fuel economy improvements of up to 18% for the vehicle and under the drive cycles tested.
By design, LH noted, a hybrid drive system provides benefits during a vehicle’s braking and subsequent acceleration phases, so not all drive cycles will take equal advantage of the system. For example, an urban delivery truck which stops many times per mile will benefit strongly, whereas a truck that spends most of its time on the highway would not be a good candidate for any form of hybridization.
Lightning Hybrids secures order for 35 hydraulic hybrid systems from Kiessling Transit
March 05, 2015
Lightning Hybrids, developer and manufacturer of hydraulic hybrid systems for medium- and heavy-duty trucks and buses (earlier post), announced an agreement with Kiessling Transit to supply 35 hydraulic hybrid systems. The sale marks Lightning Hybrids’ largest order to date. The company’s system demonstrated improvements of 30% in fuel efficiency and significantly reduced NOx emissions during a year-long pilot program with the leading Massachusetts-based transportation company.
Kiessling Transit’s vehicles, featuring new 2015 and 2016 model year Ford E450 chassis and Elkhart Coach bodies, will have the Lightning Hybrids patented parallel hybrid system installed prior to delivery this summer. The technology, which has no electric batteries, applies a hydraulic system to the driveline of a vehicle to regenerate braking energy. Hydraulic pumps and a lightweight accumulator store braking energy and use the stored energy to power the wheels. The application of this technology will result in improved emissions, less fuel use, longer brake life, better low-end torque, and lower maintenance and operational costs.
Lightning Hybrids introducing hydraulic hybrid system on walk-in box truck
February 16, 2015
|Morgan Olson walk-in van with Lightning Hybrids hydraulic drive system installed for AmeriPride. Click to enlarge.|
Lightning Hybrids, developer and manufacturer of hydraulic hybrid systems for medium- and heavy-duty trucks and buses (earlier post), will introduce the application of its first emission-reducing brake regeneration technology on a walk-in box truck. The debut will take place during the South Shore Clean Cities annual meeting in Merrillville, Indiana, on 17 February.
Lightning Hybrids’ hydraulic hybrid system on the vehicle, featuring a Ford F59 chassis and Morgan Olson Route Star walk-in van body, enhances fuel efficiency while significantly reducing emissions.
Dana offering Spicer PowerBoost hydraulic-hybrid system for off-highway field testing; demonstrated fuel savings of 20-25%
January 25, 2015
Dana engineers have conducted extensive field tests of the Spicer PowerBoost system integrated with a dual-motor hydrostatic transmission in a series configuration. These functional evaluations include more than 1,000 hours on a 16-tonne (17.5-ton) front-end loader and more than 500 hours on a telescopic boom handler powered by an 83 kW (111 hp) engine. These tests of typical duty cycles have verified fuel savings of more than 20% for the front-end loader and more than 25% on the telescopic boom handler, with an expected payback in under 18 months for both applications.
Parker Hannifin gaining traction with RunWise HD hydraulic hybrid; developing CNG-based HD system, next-gen MD system
October 09, 2014
Parker Hannifin is seeing growing acceptance in the market for its RunWise heavy-duty hydraulic series hybrid system (earlier post), currently only applied in Autocar refuse trucks. After the introduction of pilot units in 2010, Parker is now close to the 100-unit mark with the RunWise system, with 84 of those in the North American market, and another 70 being built or on order, said Mark McGrew, RunWise sales manager. “Things are continuing to press forward in a very good way,” he added. “Within the last 6-12 months, we’ve seen tremendous traction.”
In addition to seeking more heavy-duty applications for the RunWise hybrid system—such as transit—McGrew said that the company is working on a new generation of the product that should launch in 2016 for Class 4-6 delivery trucks—e.g., FedEx, UPS, etc. (Earlier post.) Further, Parker Hannifin has paired a RunWise transmission with a CNG engine in the series hybrid powertrain as a one-off to test the waters for such a combination, McGrew said.
Citroën unveiling Cactus AIRFLOW 2L concept at Paris: Hybrid Air powertrain and 2L/100 km
September 18, 2014
Citroën will unveil its new C4 Cactus AIRFLOW 2L concept at the Paris Motor Show. With the C4 Cactus AIRFLOW 2L concept, Citroën is demonstrating fuel consumption of 2l/100 km (118 mpg US) through the use of optimized design with a 20% improvement in aerodynamics; lower rolling resistance (Tall&Narrow) tires; efforts to use lighter parts and thus reduce overall vehicle weight by 100 kg; and the implementation of Hybrid Air technology (earlier post), which cuts fuel consumption by 30%.
The C4 Cactus AIRFLOW 2L project was conducted as part of the “2l/100 km vehicle” program set up by the Plateforme de la Filière Automobile, an industry group. The objective was to deliver practical solutions to reduce the impact of vehicle running costs, on household expenditure and to reduce the eco-footprint of car travel.
Peugeot showcasing 208 Hybrid Air 2L Demonstrator at Paris show
September 12, 2014
PEUGEOT is showcasing its 208 HYbrid Air 2L Demonstrator at next month’s Paris Motor Show. The 2L stands for two liters per 100 km, equivalent to 118 mpg US, and is based on a production version of the Peugeot 208 1.2-liter PureTech 82 hp 5-seater Hatchback.
Peugeot’s Hybrid Air (earlier post) is a full-hybrid solution combining compressed air and hydraulic power, with no battery required for energy storage. Hybrid Air combines the PureTech gasoline engine; a compressed air energy storage unit located beneath the trunk; a hydraulic pump/motor unit in the engine bay; and and an automatic transmission with an epicyclic gear train.