Ingeniero

28SI

TM

Heavy Duty Style Alternator High Output 160, 180 and 200 Amps

C11128

28SI High Output Alternator

Intelligent Design

The 28SI is specially designed to fit demanding applications like school buses, recreational vehicles, shuttle buses, utility trucks and other vehicles that have to contend with strong electrical loads as part of their daily operating routine. Add to thatproven technologies like Dual Internal Fans and Remote Sense and you’ve got an alternator in a class by itself. Maximum Cooling Technology The 28SI has a Dual Internal Fan (DIF) design that provides maximum cooling technology. Dual fans mean greater air circulation over the alternator electronics. That allows the alternator to run at lower temperatures which improves the Dual Internal Fan Designoperating efficiency and durability of the unit. The diagram above demonstrates how the 28SI draws air in from both the drive and terminal ends of the alternator, circulates it over the internal components and then out through air vents in the frame. The result is an alternator that runs dramatically cooler.

Remote Sense Can Reduce Battery Charge Time by 50% Due to resistance in battery cables,environmental factors and other conditions, the voltage from the alternator drops by the time it reaches the battery. Just because the alternator is sending 14 volts doesn’t mean that the battery is receiving 14 volts. That’s why we’ve included Remote Sense on all models. With Remote Sense, a second wire reads the actual voltage at the battery. It signals the alternator to boost its output tocompensate for voltage drop ensuring 14 volts at the battery. Research has shown that an increase of just 1/2 volt, when needed, can cut the battery charge time in half. At the end of the day, it can make the difference between batteries that are fully charged and those that aren’t.
Combined .5 volt drop in +/- cables

14.0 V 13.5 V
Without Remote Sense Combined .5 volt drop in +/- cables

14.0V
With Remote Sense

14.5 V

Remote Sense will maintain 14 volts at the battery by increasing charging voltage at the alternator to compensate for voltage drops.

Dual Internal Fans (DIF) offer maximum cooling technology Patented slinger covers and protects the drive end bearing from debris and contamination 62mm drive end bearing provides a significant durability advantage over the Bosch52mm bearing High efficiency stator provides high amp output with minimum electrical loss resulting in fuel savings

Remote Sense terminal, if connected, can improve battery charge time up to 50%

High copper fill rotor improves performance

High temperature electronic package includes high temperature regulator, large surface area heat sinks and 6 diodes with an industrybest 80 amp ratingper diode

Specifications
28SI Specifications Performance Output Maximum Speed Rotation Temperature Limits Polarity Mounting Weight 12 Volts 160 Amps (125 Amps at engine idle) 12 Volts 180 Amps (130 Amps at engine idle) 12 Volts 200 Amps (140 Amps at engine idle) 10,000 RPM Continuous 12,000 RPM Intermittent Clockwise Low -40°C (-40°F) High 125°C (257°F) Negative Ground J180 Short Hinge MountJ180 Long Hinge Mount Pad Mount 18.7 lbs (8.5 kg) 28SI 12 Volt Performance Curves

Mounting Styles The difference between the J180 hinge mount styles is in the distance separating the bolt holes at the front of the alternator. Use an accurate ruler or the gauge at the right edge of this page to measure your existing unit.

J180 Short Hinge Mount
9.27 in 235.6 mm

7.79 in 198.0 mm

28SI 160Amp Model
3.98 in 101.1 mm

J180 Long Hinge Mount
ENGINE IDLE RPM RANGE
9.27 in 235.6 mm

28SI Installation Information

8.50 in 216.0 mm

Indicator/Ignition Remote Sense Battery (+)

Relay Ground Screw (-) Two locations

3.98 in 101.1 mm

J180 Pad Mount
9.27 in 235.6 mm

Aftermarket Warranty School Bus Truck Emergency Vehicle Shuttle Bus Recreational Vehicle 2 Years /...