Green Car Congress

JUNE 16, 2011

In the US, the National Highway Traffic Safety Administration (NHTSA) defines NEVs as low-speed vehicles (LSVs) that are limited to 25 mph (40 km/h) and to roads with a speed limit of 35 mph. Top speed is 45 km/h (28 mph). Because of the solid separator in AGM batteries, they are considered to be sealed valve-regulated lead-acid (VRLA) batteries. Annual worldwide NEV sales by region, 2011–2017. Source: Pike Research. Click to enlarge.

2011 197

2011 2017 Light VRLA 197

Green Car Congress

MARCH 4, 2013

We have worked with several types of batteries, including advanced lead-acid batteries, and have come to the firm conclusion that even VRLA or glass-mat batteries are not capable of sustained performance in this demanding application for over-the-road transport. At a 65 mph cruise, the system is designed to operate using generator power only.

2013 198

2013 Peterbilt VRLA Fuel Economy 198

Green Car Congress

MARCH 1, 2012

Technologies include an electric supercharger; next generation belt-integrated starter generator with an advanced belt tensioning system; carbon enhanced valve regulated lead–acid (VRLA) batteries which avoid the need for supercapacitors, and higher gear ratios to reduce engine speed. In 6 th gear, which is taller even than the gearing in the baseline vehicle, the 80 to 120 km/h (50 to 75 mph) top gear acceleration is reduced by 3.5 The LC Super Hybrid demonstrator.

2012 198

2012 Lead Acid Low Cost VRLA 198

Green Car Congress

APRIL 30, 2009

The development team retained the existing conventional front-wheel-drive system of the Combo but added an electric drive, powered via low-cost valve regulated lead-acid (VRLA) batteries, to the rear wheels. Electric only drive has been limited to propel the vehicle at a speeds up to 60 km/h (37 mph). Battery pack state of charge vs. distance for the ADDZEV vehicle under all-electric power on the UDDC cycle. Source: Cranfield. Click to enlarge.

2009 150

2009 Plug-in VRLA Plug 150