What typically comes stock in these types of buses is a 12-volt, 175-Ampere alternator. Capable of withstanding heavy electrical loads, this alternator does it job – but at the cost of causing high RPM.
Why is this such a problem? An engine that is consistently running at a high RPM at idle wears out more quickly, and in addition this puts more strain on the battery and the alternator itself. Many transit and school bus fleet owners also find themselves installing extra components on their buses, such as load shedding devices, multiple battery packs, and high idle devices.
Eco-Tech manufactures comparable alternators to the stock Thomas bus alternators that are more powerful, and just as durable, but allow the engine to run at a lower RPM. Not only does this save on wear and tear while eliminating the need for extra components, this choice is also much more eco-friendly.
An Eco-Tech alternator eliminates the fuel penalty by 52 percent, allowing you to save thousands of dollars each year in fuel while bettering the environment. Engine drag is also reduced by 50 percent, rendering Eco-Tech the clearest, most sensible choice when it comes to heavy duty, high output alternator