Generally, a power steering system uses the power of the engine to drive the vane pump that generates hydraulic pressure. EHPS is a power steering system that uses a motor to generate the hydraulic pressure Read more What is EHPS (Electric Hydraulic PowerSteering)?
Automotive Function Diagnosis
The Engine & ECT ECU is equipped with a built-in self diagnostic system, which allows the technician to easily and quickly locate malfunctioning parts or circuitry during troubleshooting of the ECT. Read more Automotive Function Diagnosis
What is a Vane pump?
A rotor rotates within a cam ring secured to the pump housing. There are grooves in the rotor and a vane plate built into the grooves. The outer circumference of the rotor is circular but the inner surface Read more What is a Vane pump?
Other types of Automotive Controls
1. Line pressure optimal control
The ECT uses a throttle position sensor to detect the accelerator opening angle (load) and control the line pressure. The line pressure is controlled by using a linear Read more Other types of Automotive Controls
Turning Radius (Wheel Angle, Turning Angle)
The turning radius is the turning angle of the left and right front wheels during cornering. Giving the left and right different turning angles matches the centers of turning for all four wheels and increases Read more Turning Radius (Wheel Angle, Turning Angle)
Control of Lock-up
The Engine & ECT ECU has programmed in its memory a lock-up clutch operation pattern for each driving mode. Based on this lock-up pattern, the ECU turns the solenoid valve on or off in accordance with Read more Control of Lock-up
Main Controls Description
The Engine & ECT ECU performs the following controls.
Control of shift timing
Control of lock-up
Control of flex lock-up
Other controls
The ECT vehicle can be driven smoothly and comfortable Read more Main Controls Description
Shift Lever Lock Mechanism
Shift lever lock systems are adopted to prevent mis-operation of the shift lever. With this mechanism, when the shift lever is in the “P” range, the shift lever cannot move unless the ignition key is Read more Shift Lever Lock Mechanism
What is Sensors/Switches?
The sensors/switches play the role of collecting the types of data used to determine the various controls, and convert them into electrical signals, which are then transmitted to the Engine & ECT ECU. Read more What is Sensors/Switches?
Operation of Automotive Gear Shift
Each gear condition is explained using the solenoid valves and shift valves.
1. 1st gear
For gear shift from neutral to 1st gear, the fluid passage to C1 is opened by switching the manual valve. Read more Operation of Automotive Gear Shift