CID
oil-dynamic engines, which develop a
low speed and high torque, are fitted
with five and seven radial pistons that
ensure a high level of uniform torque
and speed.
They have a noiseless performance and
a very high torque, both at start-up
and at operation, with a maximum level
in both rotation directions.
There is a minimum degree of inertia
and mechanical and volumetric yields
are very high. All its components are
protected in order to have a long lasting
working life. In addition to mineral
oils, they can be used with non-inflammable
oils, fluids based on phosphoric esters
and water and glycol emulsions. Gears,
pinions, and other elements used to
transmit movement can be attached to
the shaft extreme without the need of
additional supports. Due to its robust
construction, the axis can bear radial
and axial loads.
Our oil-dynamic engines can be used
in open or closed circuits and can be
activated by means of pumps with pistons,
gears and blades.
Basic
circuits
Piston
swaying
This engine has stronger start-up
torque and lesser wear than others,
because the metal-to-metal contact
between the piston assembly and
the crankshaft is minimum. The
hydraulic oil that reaches the
piston head is supplied through
this up to the cavity of the base
of the brake shoe, where it is
located under pressure and exerts
force against the eccentric helping
the force exerted by the piston
against the eccentric. This allows
a movement between the brake shoe
and the eccentric with less frictional
resistance. This forms what it
is commonly known as hydrostatic
bearing through which the metal-to-metal
contact is eliminated.
Effect
of the distributor valve swaying
The distributor valve is designed
with wide inlet sleeves (high
pressure) and outlet sleeves (low
pressure) in order to transfer
oil into and from the cylinders,
enabling a smooth flow. Internally,
it has cavities for the passage
of oil, which are hydraulically
balanced to reduce lateral loads.
This effect keeps the valve centered
within its location reducing friction.
