IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0163495
(2005-10-20)
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등록번호 |
US-7337758
(2008-03-04)
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발명자
/ 주소 |
- Sturdy,David R.
- Marsh,Ronald L.
- Gallaher,James D.
- Olhoeft,Paul F.
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출원인 / 주소 |
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대리인 / 주소 |
Reising, Ethington, Barnes, Kisselle, P.C.
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인용정보 |
피인용 횟수 :
6 인용 특허 :
35 |
초록
▼
A charge motion control valve actuator method and apparatus that utilizes a motor, output shaft, control circuit, and sensor to provide closed loop control of the position of the output shaft via the motor. The control circuit has an input for receiving actuator commands and has an output connected
A charge motion control valve actuator method and apparatus that utilizes a motor, output shaft, control circuit, and sensor to provide closed loop control of the position of the output shaft via the motor. The control circuit has an input for receiving actuator commands and has an output connected to the motor to control operation of the motor. The sensor is connected to the control circuit and provides the control circuit with data indicative of the position of the output shaft. The output shaft is connected to the motor via a gear set and coil spring. Feedback from the sensor enables the control circuit to control the position of the output shaft, and the control circuit can also output data relating to the position of the output shaft.
대표청구항
▼
What is claimed is: 1. A valve actuator for regulating airflow through an intake manifold of an internal combustion engine based on actuator commands received from an ECU, comprising: a motor; an output shaft coupled to said motor, said output shaft being adjustable to different positions by said m
What is claimed is: 1. A valve actuator for regulating airflow through an intake manifold of an internal combustion engine based on actuator commands received from an ECU, comprising: a motor; an output shaft coupled to said motor, said output shaft being adjustable to different positions by said motor; a control circuit having an input that receives actuator commands from the ECU and having an output connected to said motor to control operation of said motor; and a sensor connected to said control circuit, said sensor providing said control circuit with data indicative of the position of said output shaft; wherein said control circuit operates said motor in response to said actuator commands received from the ECU to move said output shaft to a commanded position, and wherein said control circuit receives feedback signals from said sensor relating to the position of said output shaft. 2. A valve actuator as defined in claim 1, wherein said control circuit provides output data relating to the position of said output shaft. 3. A valve actuator as defined in claim 1, wherein said control circuit uses the feedback signals to provide closed loop control of the position of said output shaft without involving the ECU. 4. A valve actuator as defined in claim 1, further comprising a housing, wherein said motor, control circuit, and sensor are mounted in said housing. 5. A charge motion control valve that includes the valve actuator of claim 1. 6. A valve actuator for regulating airflow through an intake manifold of an internal combustion engine, comprising: a motor; an output shaft coupled to said motor, said output shaft being adjustable to different positions by said motor; a control circuit having an input for receiving actuator commands and having an output connected to said motor to control operation of said motor; and a sensor connected to said control circuit, said sensor providing said control circuit with data indicative of the position of said output shaft; wherein said control circuit operates said motor in response to said actuator commands to move said output shaft to a commanded position, and wherein said control circuit receives feedback signals from said sensor relating to the position of said output shaft; and wherein said motor includes a drive shaft and said actuator includes a gear set connected to said drive shaft, said output shaft being connected to said gear set such that said output shaft can be driven to various positions by said motor via said gear set, and wherein said sensor is positioned adjacent said gear set to detect the rotational position of said drive shaft. 7. A valve actuator as defined in claim 6, wherein said gear set includes a drive gear operably connected to said drive shaft and a driven gear in meshed engagement with said drive gear such that said output shaft can be driven to various positions by said motor via said driven gear, said driven gear being rotatably received on said output shaft such that said driven gear can rotate relative to said output shaft, said valve actuator further comprising a carrier attached to said output shaft for conjoint movement therewith, said carrier being in operable communication with said driven gear to move in response to the movement of said driven gear. 8. A valve actuator as defined in claim 7, wherein said sensor is located adjacent said carrier such that said sensor detects the position of said output shaft by detecting the rotational position of said carrier. 9. A valve actuator as defined in claim 8, wherein said sensor is a Hall effect sensor, and wherein said carrier includes a magnet extending about at least a portion of a periphery of said carrier. 10. A valve actuator as defined in claim 7, wherein said carrier is connected to said driven gear via a coil spring. 11. A valve actuator as defined in claim 10, wherein said coil spring includes two radially-extending ends, and said carrier and said driven gear each include a tab captively positioned between said two ends of said coil spring. 12. A valve actuator for regulating airflow through an intake manifold of an internal combustion engine, comprising: a motor having a drive shaft; a set of driven components operably connected to said drive shaft; an output shaft driven to various positions by said motor via said driven components; a control circuit having an input for receiving actuator commands and having an output connected to said motor to control operation of said motor; and a stop member located adjacent one of said driven components such that said stop member engages said one driven component at a predetermined position and prevents further rotation of said one driven component past said predetermined position; wherein said driven components include a driven gear, coil spring, and carrier, said driven gear being mounted on said output shaft and being rotatable relative to said shaft, said coil spring being mounted on said shaft, and said carrier being connected to said output shaft such that said carrier and said output shaft cannot undergo rotation relative to each other, wherein said driven gear and said carrier are connected to ends of said coil spring such that rotation of said driven gear by said motor causes concomitant rotation of said carrier via said coil spring. 13. A valve actuator as defined in claim 12, wherein said stop member engages said carrier at said predetermined position. 14. A valve actuator as defined in claim 12, wherein rotation of said one driven component is limited in each direction by said stop member. 15. A charge motion control valve actuator for controlling the angular position of an output shaft to regulate airflow through an intake manifold of an internal combustion engine, comprising: a motor having a drive shaft; a driven shaft attached to said drive shaft by a coupler for conjoint rotation therewith, said coupler allowing said driven shaft to be inclined relative to said drive shaft; a drive gear connected to said driven shaft; a driven gear in meshed engagement with said drive gear such that said output shaft can be driven to various positions by said motor via said driven gear, said driven gear being rotatably received on said output shaft such that said driven gear can rotate relative to said output shaft; a carrier fixed to said output shaft for conjoint movement therewith; a control circuit having an input for receiving actuator commands and having an output connected to said motor to control operation of said motor; a sensor connected to said control circuit and being positioned adjacent said carrier to detect the rotational position of said output shaft; and a spring received about said output shaft in engagement with said driven gear and said carrier such that rotational movement of said driven gear is imparted to said carrier via said spring. 16. A method of operating an actuator for a charge motion control valve having a park position representing a desired end of travel of the valve and having a stop member that stops movement of the valve at a stop position located beyond the park position, said actuator having a motor with a drive shaft connected to an output shaft via a set of gears, said output shaft being rotationally adjustable by said motor to a number of different positions within a normal range of operation including a first target position that corresponds to the park position of the valve, said method comprising the steps of: energizing said motor and rotating said output shaft in one direction past said first target position to a second target position that is located beyond the stop position and outside of said normal range of operation; outputting position data indicative of the position of said output shaft; and thereafter, energizing said motor and rotating said output shaft in the opposite direction until said output shaft returns to a selected position within said normal range of operation. 17. The method of claim 16, wherein said outputting step further comprises detecting the position of said output shaft using a carrier fixed to said output shaft for conjoint movement therewith. 18. The method of claim 16, further comprising the step of outputting data indicative of a diagnostic trouble code if said output shaft reaches said second target position. 19. The method of claim 16, wherein said energizing steps further comprise rotating said output shaft via a coil spring coupled between said output shaft and said motor.
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