CHERY AUTOMOBILE CO., LTD Automatic Transmission Fault Diagnosis Manual
e and working principle
ic transmission
ansversely-laid front drive and four gearshifts. The
transmission is comprised of an oil pump, torque converter with a torque shock absorber, four gear
planetary gear mechanism and control system.
Th
to
41 nsfer. The 4
th
gear has a pure mechanical transfer.
rshift is realized by controlling the engagement of shift actuator element, brake and one-way
overrun clutch.
Th
ve
Th
The torque converter is connected with the worm.
sed of an impeller, worm gear, guide roller and case. The case is full of
hy
connection between the drive and driven pieces, hence, no friction inside the converter.
Brief introduction of automatic transmission’s structur
Brief introduction of the automat
4HP14 is an automatic transmission with tr
e 1
st
, 2
nd
and back gear has pure torque transfer. The power is transferred from the engine to
rque converter, then from the torque converter to the gearbox. 3
rd
gear has a mixed transfer, about
% by torque and 59% by mechanical tra
Gea
e transmission is controlled by shift lever. The shift point is determined by the shift position and
hicle speed.
Torque converter
e torque converter could transfer the power, reduce speed and increase torque.
The converter is compri
draulic fluid. The power is transferred by the hydraulic fluid’s flow. Thus, there isn’t mechanical
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