Scanning for Ideas: Heavy-Duty Alternator Manages Battery, Too

Oct. 23, 2008
The 36SI alternator from Delco Remy, Pendelton, Ind. (, uses a brushless design, not a common approach in the automotive industry due to the complicated electronics needed.

Edited by Stephen J. Mraz

But brushless alternators have fewer moving parts to wear out, so they last longer. This lets the company warranty this alternator for three years or 350,000 miles. The 36SI is also efficient, needing less engine power to generate electricity, which leaves more to turn the wheels and pull the load. For example, when tested against a leading competitor, the 36Si saved $110 for every 100k miles driven at a 60-A load (with fuel at $4/gallon). At 80 A, that goes to $170 per 100k miles. The alternator also features Remote Sensing. It detects actual input voltage at the battery and tells the alternator to boost output to compensate for losses due to resistance in the cables and environmental factors. Research shows that if voltage is down by 0.5 V, charging times can double.

The unit weighs about 26 lb, is rated 68% efficient, and generates 97 A at 2,000 rpm and 165 A at 6,500 rpm. It can be hinge, pad, or quad mounted.

Sponsored Recommendations

How to Build Better Robotics with Integrated Actuators

July 17, 2024
Reese Abouelnasr, a Mechatronics Engineer with Harmonic Drive, answers a few questions about the latest developments in actuators and the design or engineering challenges these...

Crisis averted: How our AI-powered services helped prevent a factory fire

July 10, 2024
Discover how Schneider Electric's services helped a food and beverage manufacturer avoid a factory fire with AI-powered analytics.

Pumps Push the Boundaries of Low Temperature Technology

June 14, 2024
As an integral part of cryotechnology, KNF pumps facilitate scientific advances in cryostats, allowing them to push temperature boundaries and approach absolute zero.

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!