Remy Inc. introduced a new family of heavy-duty alternators designed to enable fleets and owner-operators to ensure adequate alternator output in spite of increased underhood operating temperatures.
The three new high-temperature alternators – the Delco Remy 28SI, 36SI and 40SI – are engineered and tested to ensure unsurpassed output in underhood operating environments up to 125 degrees C (257 degrees F). In addition to their resistance to these continuous temperatures, the new Delco Remy alternators are designed for any application experiencing extended operating temperatures above 110 degrees C.
“Increased heat in the engine compartment is the dominant trend affecting alternator design. Our testing of 2007 engines shows that heavy duty vehicles will consistently see underhood temperatures well above 110 degrees, with peaks up to 125 degrees,” said Kent Jones, vice president, Heavy Duty Sales.
The Delco Remy 28SI heavy-duty brush-type alternator delivers up to 180 amps of power at highway speed and 130 amps at idle. This new design features a dual-internal-fan technology that helps ensure optimal cooling efficiency within tightly packaged heavy-duty engine compartments, the company said.
The Delco Remy 36SI premium brushless alternator produces 160 amps at highway speed and 110 amps at idle. The new 40SI is engineered to deliver 300 amps at road speed and more than 200 amps at idle.
All three alternators feature a variety of new technologies – including a premium “Flex-Lead” diode-bridge design and higher-capacity, press-fit diodes – that are designed for applications with higher underhood temperatures and increased vibration. Each is available with the Delco Remy brand’s Remote Sense technology, which automatically adjusts output based on voltage at the battery terminals to help ensure the optimal state of charge.
For more information, visit www.delcoremy.com.