Gillig offering Vanner Hybrid Beltless Alternator as standard equipment on hybrid buses
01 July 2011
|Vanner HBA. Click to enlarge.|
Gillig LLC, one of the nation’s largest transit bus manufacturers, now offers the Vanner Hybrid Beltless Alternator (HBA) as standard equipment on their hybrid buses. The Vanner HBA replaces the alternator and the associated pulleys and belts.
The Vanner HBA uses DC Converter technology to replace the traditional alternator and deliver benefits including: 25-30% efficiency improvements over traditional alternator technology; fuel economy improvements and reduced exhaust emissions; stable DC power at all temperatures and speeds; and precise and maintenance-free integrated voltage regulation. Output is 28 VDC (±2%) and 250A @ curb idle.
The solid-state design eliminates the reduced or lost power experienced by traditional alternators when internal temperatures increase. The HBA’s operating temperature range is -40 °C to 80°C, or -40 °C to 55 °C at full load. The HBA is also at least 25% lighter than traditional alternators, resulting in fuel savings and emissions reductions.
In addition to removing the alternator, it also eliminates the need for V-belts, pulleys, voltage regulator, pulleys, idle tensioners, hydraulic lines and fittings and other moving parts.
We anticipate that transit fleets will only need one HBA for every five alternators and associated parts. The HBA significantly increases vehicle readiness in the yard and cost savings over the life of the bus could be $25,000 or more.—Chris Collet, Vanner VP, Bus and Hybrid Markets
|Roof mounting. Click to enlarge.|
The HBA provides full power at curb idle and delivers power that exceeds conventional alternators through 85% of the drive cycle, according to testing performed by Vanner and Gillig engineers. Vanner uses a roof-mount installation for the HBA, unlike the alternator, which is located near the engine, to eliminate any potential for thermal events. Testing of the HBA also indicates fuel savings and reduced stress on the engine, which can lead to longer engine life.
Vanner, a leader in commercial vehicle power management systems since 1977, develops power management solutions for transit and coach buses, ambulances, trucks, mobile office and military vehicles.
Isn't this what is commonly called a DC to DC converter/controller?
It will convert the Hydrid bus main battery high voltage to low (28 VDC), 250 Amps controlled at 2%.
Posted by: HarveyD | 01 July 2011 at 06:20 AM
LOL Thanks Harvey. I'm glad someone else said something because I was reading it and thinking "what am I missing here?"
Posted by: DaveD | 01 July 2011 at 03:35 PM
Yes, it is a switching power supply.
Posted by: SJC | 01 July 2011 at 06:03 PM