Study Of Different Types Of Ptos - Hyundai Body Builder 2015 Manual

INTRODUCTION PRELIMINAR STUDIES AND CONSIDERATIONS
MOUNTING AND CONSTRUCTION
6.2
There are two main types of PTO,
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The PTOs that are connected directly to the engine are aimed at equipment that re-
quires low to medium powers or that is most of the time used during driving. It is also
useful when the vehicle must operate the PTO for a large number of hours while it
is parked, such as a refrigerator compressor. The PTOs dependent on the gearbox
are focused on equipment needing a high supply of energy to develop its function.
They will only work with the vehicle parked, e.g. a dump.
PTOs dependent on the clutch:
PTOs dependent on the clutch are installed in the gearbox. They are usually driven
by the intermediate shaft of the gearbox. Its rotational speed and the power sup-
plied are determined by the engine speed and the transmission ratio of the gearbox.
In most cases, they are activated by a pneumatic system that precludes the PTO
connecting with the vehicle in motion. This prevents a conflict between the gearbox
and the PTO.
This option is most suitable for operations of the superstructure that do not need
to be used during driving and that should produce a high supply of energy. It can be
use for vehicles with loading cranes, for high-pressure pumps, for hydraulic plat-
form, etc.
PTOs independent of the clutch
PTOs independent of the clutch or connected directly to the engine can be installed
regardless of the type of vehicle driveline. They can be activated either when the
vehicle is parked or when it is in motion. They are the perfect choice for vehicles
that need to have the PTO activated most of the time, and that do not need high
power.
In this type of PTO, their speed and power are determined only by the motor, which
limits their range of action. This means that when the PTO is connected, it is always
working when the engine is running, regardless of whether the vehicle is moving or
parked. It can be use for air conditioning, auxiliary alternators, refrigerated vehicles,
etc.
208
POWER TAKE-OFF

Study of different types of PTOs

PTOs which are dependent on the clutch and
PTOs which are independent of the clutch or connected directly to the engine.
Body Builder Manual Part II, Specific Book LCV
MAINTENANCE AND DAMAGE PREVENTION
ELECTRIC AND ELECTRONIC SYSTEMS
WORK ON BASIC VEHICLE
APPENDIX
V1.0, February 2015