Hyundai HX145LCR Manual page 137

3. 3. OPERATION OPERATION
1) 1) MOTOR MOTOR
High pressure oil delivered form hydraulic pump is led to inlet port that is provided in the brake
valve portion and, through the rear cover (30) and valve plate (24), led to cylinder block (12).
The oil flow and direction of shaft rotation are indicated in table.
Shaft rotation Left
(Counterclockwise)
VB
As shown in below figure, high pressure oil is supplied to the pistons which are on one side of the
line Y-Y that connects upper and lower dead points and produces force F1.
F1 = P×A (P : pressure, A : area of piston section)
The swash plate (11) with inclined angle of
force F31-34.
This radial force is applied to axis Y-Y as turning force and generate drive torque of T.
·F31+r ·F32+r
T = r
1 2
This drive torque is transmitted via cylinder block (12) to driving shaft (6).
Shaft rotation Right
(Clockwise)
VA
·F33+r ·F34
3 4
Y
F31
r1
F32
r2
P
F33
r3
P
F34
Y
r4
2-85
Inlet Outlet
port port
VB VA
VA VB
divides this force F1 into thrust force F2 and radial
P
P
Direction of shaft rotation
(viewing from rear cover)
Right (clockwise)
Left (counterclock wise)
125LCR2TM23
F1
F31
F2
F32
F33
F34
29092TM07