Ford Motor Company's lockup clutch electronic control

Ford Motor Company's lockup clutch electronic control

The Electronic Control Locking Clutches used by Ford Motor Company can be divided into two types according to the working mode. They are represented by the AXOD automatic transmission bridge and the A4I-D automatic transmission system. The following are introduced separately.

Electronic control of AXOD type automatic transmission bridge lock-up clutch In the 4th-speed AXOD type automatic transmission bridge, the lockup clutch of the hydraulic transmission can be locked in the third or fourth gear, and the locking solenoid valve is the The company's fourth-generation engine electronic control system (EEC-IV) controls. The locking input signal used by the control system comes from the engine cooling water temperature sensor, the throttle position sensor, the vehicle speed sensor, the atmospheric pressure sensor, the brake switch, and the third and the second pressure switch, the fourth and the third pressure switch and the neutral gear. Pressure Switch.

In the above sensors and switches, the throttle position sensor provides the electronic control unit with an electrical signal that changes according to the percentage change of the throttle opening; the atmospheric pressure sensor is located in the engine compartment, and the electrical signal it provides varies depending on the atmospheric pressure. The brake switch is located at the brake pedal. When using the foot brake, it will provide the electronic control unit with a switch signal indicating that the foot brake is in use.

In addition, there are several pressure switches in the electronic control system. Their role is to provide the electronic control unit with switching signals for a given gear shift condition. The lock-up solenoid valve is mounted on the body of the automatic transmission bridge. When the solenoid valve is not energized, it releases the hydraulic pressure that can be used to activate the lock-up clutch, thereby preventing the clutch from locking; when After energization, the drain port is closed, forcing the main line pressure to act on the lock-up plunger valve and then locking the lock-up clutch.

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