Prime Energy Management System; Components - PREVOST H3-41 Maintenance Manual

12. PRIME ENERGY MANAGEMENT SYSTEM

The acronym "PRIME"
Recovery by Intelligent Management of Energy.
This system focuses on eliminating parasitic
loads on the engine by intelligent management
of the alternators and air compressor duty cycle.
Instead of constantly charging, the alternators
will use engine negative torque (braking,
deceleration) to generate "Free" electricity.
Depending on the compressed air requirement,
PRIME will also trigger the production of
compressed air on negative torque.
PRIME also introduces
Absorbed Glass Mat (AGM) batteries and a
Vanner 80 series battery equalizer that monitors
battery State of Charge (SOC).
EQUALIZER
FIGURE 61: PRIME ELECTRICAL COMPONENTS
stands for Power
maintenance-free
CURRENT SENSORS
PA1621 Maintenance Manual All Series | Revised Sept 2019
SECTION 06: ELECTRICAL
Battery temperature, voltage and current are
also monitored to prevent overcharging and
overheating.
Maximum fuel economy is obtained on a ride
when the mix of hilly and flat portions allows the
batteries to be charged when the vehicle is in
free wheel. It basically means that batteries are
charged with free energy and that no fuel
consumption is dedicated
batteries.

12.1 COMPONENTS

New components includes AGM batteries, a
Vanner Battery equalizer, a temperature sensor
located on the battery post and two voltage and
current sensors monitoring 12V and 24 V
circuits. Refer to Figure 61 below.
The compressor duty cycle control is achieved
by an electric air dryer. This is covered in
section 12 of this manual.
to charge the
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