Systems and methods for controlling trim position of a marine propulsion device on a marine vessel
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F15B-015/26
B63H-020/10
B63H-021/30
F02B-061/04
출원번호
US-0729885
(2015-06-03)
등록번호
US-9944375
(2018-04-17)
발명자
/ 주소
Martin, Justin
Klawitter, Daniel P.
Grahl, Flint
Groeschel, John A.
출원인 / 주소
Brunswick Corporation
대리인 / 주소
Andrus Intellectual Property Law, LLP
인용정보
피인용 횟수 :
2인용 특허 :
15
초록▼
A system for controlling trim position of a marine propulsion device on a marine vessel includes a trim actuator having a first end configured to couple to the marine propulsion device and a second end configured to couple to the marine vessel. A controller controls position of the trim actuator bet
A system for controlling trim position of a marine propulsion device on a marine vessel includes a trim actuator having a first end configured to couple to the marine propulsion device and a second end configured to couple to the marine vessel. A controller controls position of the trim actuator between an extended position wherein the propulsion device is trimmed up with respect to the vessel and a retracted position wherein the propulsion device is trimmed down with respect to the vessel. A shock relief mechanism overrides position control by the controller and allows extension of the trim actuator upon the occurrence of an overpressure event. An arresting mechanism, when activated, prevents extension of the trim actuator beyond a certain limit. The controller selectively activates the arresting mechanism in response to a determination that the propulsion device is being commanded in reverse. Methods for controlling trim position are also included.
대표청구항▼
1. A system for controlling trim position of a marine propulsion device on a marine vessel, the system comprising: a trim actuator having a first end that is configured to couple to the marine propulsion device and a second end that is configured to couple to the marine vessel, the trim actuator bei
1. A system for controlling trim position of a marine propulsion device on a marine vessel, the system comprising: a trim actuator having a first end that is configured to couple to the marine propulsion device and a second end that is configured to couple to the marine vessel, the trim actuator being movable between an extended position wherein the marine propulsion device is trimmed up with respect to the marine vessel and a retracted position wherein the marine propulsion device is trimmed down with respect to the marine vessel;a controller that controls position of the trim actuator between the extended position and the retracted position;a shock relief mechanism that overrides position control by the controller and allows extension of the trim actuator upon an occurrence of an overpressure event; andan arresting mechanism that when activated acts on a component of the trim actuator to prevent extension of the trim actuator beyond a certain limit;wherein the controller selectively activates the arresting mechanism in response to a determination that the marine propulsion device is being commanded in reverse. 2. The system of claim 1, wherein the controller activates the arresting mechanism in response to the marine propulsion device being placed in reverse gear. 3. The system of claim 2, wherein the controller activates the arresting mechanism in response to the marine propulsion device being commanded to produce a reverse thrust that exceeds a certain threshold. 4. The system of claim 3, wherein the reverse thrust threshold corresponds to a force on the marine propulsion device that would otherwise cause the overpressure event and activate the shock relief mechanism. 5. The system of claim 1, wherein the trim actuator is a hydraulic actuator and further comprises a cylinder, a piston that reciprocates back and forth in the cylinder, and a trim rod that is coupled to the piston and extends from the cylinder, and wherein the arresting mechanism prevents the piston and trim rod from moving more than a certain extent with respect to the cylinder. 6. The system of claim 5, wherein the piston comprises a shock relief part having a relief passage that conveys hydraulic fluid past the piston as the trim actuator is forced by the overpressure event into or out of the extended and retracted positions. 7. The system of claim 6, wherein the arresting mechanism acts on the trim rod outside of the cylinder. 8. The system of claim 7, wherein the arresting mechanism comprises a brake rod coupled to the trim rod, and brake pads that selectively prevent movement of the brake rod in response to an activation signal from the controller, thereby also preventing movement of the trim rod. 9. The system of claim 8, wherein the brake pads are hydraulically actuated. 10. The system of claim 6, wherein the arresting mechanism acts on the shock relief part of the piston inside of the cylinder. 11. The system of claim 10, wherein the arresting mechanism forms part of the piston, and comprises a braking part coupled coaxially with the shock relief part to the trim rod, wherein the braking part selectively opens and closes the relief passage. 12. The system of claim 11, wherein the braking part is located on a non-rod side of the piston between the shock relief part and a cap, and wherein the braking part is movable with respect to the shock relief part and the cap so as to open and close the relief passage. 13. The system of claim 12, wherein the shock relief part further comprises a valve that controls flow of the hydraulic fluid through the relief passage, and wherein when the braking part is moved toward the shock relief part in response to an activation signal from the controller, the braking part closes the valve. 14. The system of claim 13, wherein the braking part is hydraulically actuated. 15. The system of claim 14, wherein the trim rod has an axially-extending passageway that provides hydraulic braking fluid to a space between the cap and the braking part so as to move the braking part toward the shock relief part. 16. The system of claim 13, wherein the valve is a check valve. 17. The system of claim 5, further comprising a source of hydraulic fluid that supplies hydraulic fluid to the hydraulic actuator, a first inlet to the cylinder on a rod-side of the piston, a second inlet to the cylinder on a cylinder-side of the piston, and a control valve that controls flow of the hydraulic fluid to the rod-side of the piston and the cylinder-side of the piston, wherein flow of the hydraulic fluid to the rod-side of the piston causes the piston to move such that the trim rod further retracts into the cylinder and wherein flow of the hydraulic fluid to the cylinder-side of the piston causes the piston to move such that the trim rod further extends from the cylinder. 18. The system of claim 1, further comprising a trim limit input device, which allows an operator to select the certain limit beyond which the trim actuator cannot extend. 19. A method for controlling trim position of a marine propulsion device on a marine vessel, the method comprising: providing a trim actuator having a first end that is configured to couple to the marine propulsion device and a second end that is configured to couple to the marine vessel, the trim actuator being movable between an extended position wherein the marine propulsion device is trimmed up with respect to the marine vessel and a retracted position wherein the marine propulsion device is trimmed down with respect to the marine vessel;controlling, with a controller, position of the trim actuator between the extended position and the retracted position;providing a shock relief mechanism that overrides position control by the controller and allows extension of the trim actuator upon an occurrence of an overpressure event;providing an arresting mechanism that when activated prevents extension of the trim actuator beyond a certain limit;determining with the controller whether the marine propulsion device (a) is being commanded in reverse, (b) has been placed in reverse gear, and (c) has been commanded to produce a reverse thrust that exceeds a certain threshold; andin response to (a), (b), and (c) being true, activating the arresting mechanism with the controller. 20. The method of claim 19, wherein the reverse thrust threshold corresponds to a force on the marine propulsion device that would otherwise cause the overpressure event and activate the shock relief mechanism. 21. A system for controlling trim position of a marine propulsion device on a marine vessel, the system comprising: a trim actuator having a first end that is configured to couple to the marine propulsion device and a second end that is configured to couple to the marine vessel, the trim actuator being movable between an extended position wherein the marine propulsion device is trimmed up with respect to the marine vessel and a retracted position wherein the marine propulsion device is trimmed down with respect to the marine vessel;a controller that controls position of the trim actuator between the extended position and the retracted position;a shock relief mechanism that overrides position control by the controller and allows extension of the trim actuator upon an occurrence of an overpressure event;an arresting mechanism that when activated prevents extension of the trim actuator beyond a certain limit; anda trim limit input device, which allows an operator to select the certain limit beyond which the trim actuator cannot extend;wherein the controller selectively activates the arresting mechanism in response to a determination that the marine propulsion device is being commanded in reverse.
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이 특허에 인용된 특허 (15)
Eick Edward C. ; Shields Waylon D. ; Barker Arthur L., Adjustable trim position system.
Newman Neil A. (Omro WI) Bankstahl Herbert A. (Fond du Lac WI) Griffiths John M. (Fond du Lac WI) Forsgren Lyle M. (Oshkosh WI) Beck Wayne T. (Fond du Lac WI), Operation optimizing system for a marine drive unit.
Alby Jeremy L. ; Olson Gunderson Martin E. ; Uppgard Darin C., Outboard motor with a hydraulic pump and an electric motor located within a steering mechanism.
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