The forklift transmission cannot be automatically, in the automatic shift mode, up to the second file. Jiaxing forklift for you to explain the forklift automatic shift mode troubleshooting.1. Basic working principle of forklift - forklift:
Forklift configuration DANA liquid automatic shifting transmission, the gear is advanced, and the retreat has 4 blocks. The transmission has a manual and automatic 2 shift mode, and the driver can achieve handoff between manual and automatic shifting through one electrical switch, and the electrical switch is closed to manually, and is disconnected.
The variable speed system can be based on the driver's intention (throttle opening) and the driving status of the forklift (engine speed, turbine speed, vehicle speed and gear), with the corresponding actuator (throttle execution mechanism, latching actuator, and selective mechanism) ) Automatic manipulation, the principle of control is shown in the drawings. The throttle position sensor, the pump wheel turbine speed sensor, the vehicle speed sensor, and the gear selector are sent to the electronic control unit ECU, and the ECU controls the sum of each solenoid valve based on the stored shifting signal, thereby control the clutch or brake The clutch to achieve lock and unlocking of automatic shift or liquid torque converter.
2, according to the analysis troubleshoot
Preliminary analysis believes that the reason why it does not change high speed is probably a sensor failure, checking below.
(1) Check the shift switch
Check the manual and automatic switching switch with a multimeter, and the switch is normal to logic.
(2) Check the throttle switch
1 normally closed switch of the vehicle accelerator pedal, do not step on the throttle pedal, switch to an engine idle signal of an electronic control unit, not allowed to transfer, automatic shift; files. The field is measured on the field, and the switching logic is normal.
(3) Check forklift related sensors
The transmission is provided with three electromagnetic sensors, the detection engine input speed throttle position sensor is the detection of the transfer pump wheel and turbine speed pump water turbine speed sensor, three detection transmission output speed signal sensors.
The results of the measuring table measurement on the field have proved that the turbine pump speed sensor resistance is infinite, so that the sensor is faulty.
After replacing the sensor test, the transfer restores the normal operation.
Article from: http://www.brcpower.com/ Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
