Invention Application
- Patent Title: SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY
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Application No.: US16066636Application Date: 2016-12-12
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Publication No.: US20190011057A1Publication Date: 2019-01-10
- Inventor: Fredrik STRÅÅT , Sebastian ZAMANI
- Applicant: Scania CV AB
- Applicant Address: SE Södertälje
- Assignee: Scania CV AB
- Current Assignee: Scania CV AB
- Current Assignee Address: SE Södertälje
- Priority: SE1650012-6 20160105
- International Application: PCT/SE2016/051247 WO 20161212
- Main IPC: F16K31/04
- IPC: F16K31/04 ; F02D9/10 ; H02P3/12 ; H02P6/08 ; H02P6/17 ; H02P6/24

Abstract:
A spring return throttle actuator including: an electric, plural-coil DC motor having an output shaft, a throttle return spring, a gear transmission connected to the output shaft, a control unit adapted to control power supply to the DC motor, wherein the spring return throttle actuator has a movement range between closed throttle and opened throttle. The control unit is arranged to short-circuit at least two DC motor coils in order to create a DC motor return resist torque, and the return spring is balanced such that generated spring return torque over the whole movement range of the actuator does not exceed said DC motor return resist torque. The invention also relates to a method and a throttle assembly.
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