Hyundai Elantra HD: Solenoid valve. Description and Operation (A4CF2)
Description
TCM calculates the best condition using the information from all kinds
of sensors. If the solenoid valve receives the information on the oil pressure,
the solenoid valve actuates according to the driving signal. All kinds of regulators
in the valve body are controlled to change the oil passage and also the line
pressure is controlled by TCM.
● PWM (Pulse Width Modulation) SOLENOID VALVE
Structure and functions
PWM solenoid valve is composed of five solenoid valves and the oil capacity
in the solenoid valve is changed by the electric duty value of TCM. The oil
pressure of the valve body and the torque converter engages or disengages the
damper clutch. The solenoid valves send the operating oil pressure to the clutches
and brakes at the each range and also control the strength and weakness of oil
pressure to reduce the shock when shifting the range.
PWM (Pulse Width Modulation) Solenoid
|
Range |
PWM solenoid valve |
||||
|
PCSV-A |
PCSV-B |
PCSV-C |
PCSV-D |
ON, OFF |
|
|
N, P |
OFF |
ON |
ON |
OFF |
ON |
|
1st |
ON |
ON |
OFF |
OFF |
ON |
|
2nd |
ON |
OFF |
OFF |
ON |
OFF |
|
3rd |
OFF |
ON |
OFF |
ON |
OFF |
|
4th |
OFF |
OFF |
ON |
ON |
OFF |
|
Reverse |
OFF |
OFF |
ON |
OFF |
ON |
|
LOW |
OFF |
ON |
OFF |
OFF |
ON |
PWM (Pulse Width Modulation) Solenoid Valve Control Feature
PWM solenoid valve is controlled linearly according to the duty ratio.
Oil pressure range:
0~4.3 kgf/cm² (0~422kpa, 0~61.2psi)
|
|
Type |
3way & Normal High |
|
Supply voltage |
12V |
|
Coil resistance |
3.2±0.2Ω (at 25°C, 77°F) |
|
Cycle |
50Hz |
