PREVOST X3-45 COMMUTER User Manual

SECTION 06: ELECTRICAL
66
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 06 revised release October 2021
12. PRIME ENERGY MANAGEMENT SYSTEM
The acronym “PRIME” stands for Power
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 maintenance-free
Absorbed Glass Mat (AGM) batteries and a
Vanner 80 series battery equalizer that monitors
battery State of Charge (SOC).
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 to charge the
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 50 below.
The compressor duty cycle control is achieved
by an electric air dryer. This is covered in
section 12 of this manual.
EQUALIZER
CURRENT SENSORS
FIGURE 50: PRIME ELECTRICAL COMPONENTS

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in