Electric Drive Module Fast and Precise Adjustment of Distance and Angle

General description On gasoline and diesel engines there is a large number of control and regulating functions involving adjustments to distances and angles. Included is the adjustment of flaps on high-performance (variable) intake manifolds, positioning of waste gates or of control valves (swirl and tumble) located in the intake system for best possible charge motion. Flaps are used in exhaust systems, for fine-tuning sound and for emission control. Nowadays, many of these control and regulating functions are still performed by vacuum driven actuators although later vehicles and engines (direct...

The ‘i’ stands for ‘integrated position control’. This component allows continuous adjustment between the two end positions and maintain any position within the operating range. The engine controller transmits the desired position via a PWM signal to the actuator. This signal is then converted by the integrated electronics to the corresponding angle and the H-bridge drives the output shaft to the respective angle. The actual position is fed back by the position sensor (both none-contact or potentiometer). The EAM-i needs only three wires for operation: supply voltage, ground and the PWMsignal...

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