Pty Ltd have developed an affordable product that transforms commercial
vehicle, into a fully functioning hybrid vehicle, Hydraulic Drive Assist hybrid system.
To help the reader
understand the associated prefixes used to describe motor vehicle driveline and
axle configurations, we have produced these following images and explanations.
This information may seem to some to be stating the obvious, but not all readers
have a background in the transport industry.
people will be familiar with the 4X4 logo found on motor vehicles.
The first digit
"4" refers to the number of wheels visible the outside of
the motor vehicle. If dual wheels are fitted to the same axle, the inside wheel
is not counted.
The second digit
"4" refers to the number of driving wheels. Hence a 4X4 can be
driven in all wheel drive (AWD) in some models the front axle can be disengaged manually
to conserve fuel.
Car Axle Configurations
Figure A. Four outside
wheels and four driving wheels, 4 X 4.
Figure B. Four outside
wheels and two driving wheels, 4 X 2.
Figure C. Four outside
wheels And four driving wheels, 4 X 4 (inside wheels are not counted)
Figure D. Four outside
wheels and two driving, 4 X 2 (inside wheels are not counted)
Figure E. Heavy vehicle
( army truck) eight outside wheels and eight wheels driving, 8 X 8, (inside
wheels are not counted)
number of axles and drive combinations are possible, in the vehicle numbering
system there is no distinction between steer and non steer wheels. The images
below are of typical axle configurations for trucks and busses.
axles are installed strategically to increase the vehicles pay load. Note that
only the axles that attach to the vehicle drive shaft are driven axles. Two
axles close together at the front of the vehicle are also referred to as twin
steer vehicles, in some cases steer axles are also driven, as in the 8X8 image
above. (figure E)
& Coach Axle Configurations
Buses and coaches have
the most variety of axle and driveline configurations, below is a sample of the
most common bus chassis designs.
Front Engine Bus, 4X2
Rear Engine Bus, 8X2
Rear Engine Bus, 4X2
Rear Engine Bus, 6X2
Under Floor Mid Engine Bus, 4X2
Rear Engine Bus, 6X2
Transverse Rear Engine, 4X2
Articulated rear engine Bus, 6X2
Side Mounted Mid Engine Bus, 4X2
Articulated Mid Engine bus, 6X2
Side Mounted Rear Engine Bus, 4X2
Articulated Transverse Rear Engine Bus, 6X2
wheel drive layouts pictured below depict six different positions of a
hybrid drive module that can be used to produce a hybrid drive vehicle.
Image 2 and 4 are the main designs we use to produce our electric and
hydraulic hybrid drive systems.
are currently developing a Front Wheel Drive (FWD) hydraulic hybrid system
for motor cars and light commercial vehicles. Our targeted market will be
FWD delivery vans of all sizes.
Australian chart below may help in understanding axle configuration classifications, the size weight and number of axles are used to calculate the registration and tax to be paid on a particular vehicle.