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公开(公告)号：US11680497B2
公开(公告)日：2023-06-20
申请号：US17415843
申请日：2019-12-20
Applicant: Eaton Intelligent Power Limited
Inventor： Dale Arden Stretch
CPC classification number: F01L1/185 , F01L1/46 , F01L1/2405 , F01L2001/186 , F01L2001/2444 , F01L2810/01 , F01L2820/031
Abstract: A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. An electromagnet of the latch assembly is housed within a chamber formed by the rocker arm. Passageways suitable for oil cooling of the electromagnet are formed through and inside the rocker arm. In some embodiments, oil for cooling is supplied through a pivot. In some embodiments, oil for cooling is obtained from oil splash. Oil cooling may allow modes of operation such as of dynamic cylinder deactivation and dynamic variable valve actuation to be used without overheating the electromagnet.
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公开(公告)号：US11326533B2
公开(公告)日：2022-05-10
申请号：US16067021
申请日：2016-12-28
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Dale Arden Stretch , James E McCarthy, Jr.
Abstract: A method for exhaust temperature management in a multiple-cylinder, reciprocating-piston engine, comprising sensing a low temperature condition of the exhaust and implementing an increased heat output engine cycle pattern for the engine based on the sensed low temperature condition. The increased heat output engine cycle pattern comprises deactivating fuel injection to a first cylinder of the engine, the first cylinder comprising a piston reciprocating between top-dead-center and bottom-dead-center. Also, activating engine braking mode on the first cylinder by opening one or more valves when the piston is away from bottom-dead-center during a compression stroke. A second cylinder of the engine is fired in a combustion mode while the first cylinder is in engine braking mode.
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公开(公告)号：US11156133B2
公开(公告)日：2021-10-26
申请号：US16447071
申请日：2019-06-20
Applicant: Eaton Intelligent Power Limited
Inventor： Dale Arden Stretch
Abstract: A method of using a through axle switching rocker arm according to one example of the present disclosure is provided. The switching rocker arm comprises an outer and inner arm and a roller axle. The inner arm is pivotally coupled to the outer arm about a pivot axle and has an inner bushing that supports an inner roller. The inner bushing defines an inner diameter. The roller axle extends through the inner bushing and defines an outer diameter. The inner diameter of the inner bushing engages the outer diameter of the roller axle thereby inhibiting further pivoting of the inner arm relative to the outer arm defining a rocker arm travel constraint. The method includes designing first and second cam profiles based on the through axle switching rocker arm such that a difference in lift between the first and second cam profiles is held within the rocker arm travel constraint.
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公开(公告)号：US11078810B2
公开(公告)日：2021-08-03
申请号：US16340276
申请日：2017-10-09
Applicant: Eaton Intelligent Power Limited
Inventor： Matthew A. Vance , Dale Arden Stretch
Abstract: A rocker arm comprises a first outer arm and a second outer arm joined by a pivot body, the first outer arm comprising an inner side, the inner side comprising a limiting surface. An actuatable latch mechanism is within the pivot body. A first inner arm and a second inner arm are joined by a latch arm. An axle joins the first inner arm and the second inner arm to pivot between the first outer arm and the second outer arm. A second axle is between the first inner arm and the second inner arm. A pin extends from the second axle towards the first outer arm, and the pin is configured to pivot towards and away from the limiting surface when the first inner arm and the second inner arm pivot between the first outer arm and the second outer arm.
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公开(公告)号：US20210062685A1
公开(公告)日：2021-03-04
申请号：US17050438
申请日：2019-04-24
Applicant: Eaton Intelligent Power Limited
Inventor： Dale Arden Stretch , Michael J. Campbell
Abstract: A rocker arm assembly that includes an electromagnetic latch assembly with a latch pin and an actuator operative to actuate the latch pin between a first position and a second position. The actuator includes an electromagnet powered through a coil circuit. The rocker arm assembly further includes a switch in a switch circuit. The coil circuit and the switch circuit are connected in parallel. Moving the latch pin between the first position and the second position opens and closes the switch. In an alternate embodiment, relative motion of two rocker arms opens and closes the switch. The rocker arm assembly allows OBD information to be obtained without making electrical connections to the rocker arm assembly other than ones provided to power the electromagnet.
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Patent Agency Ranking
公开(公告)号：US20190234247A1
公开(公告)日：2019-08-01
申请号：US16342376
申请日：2017-10-13
Applicant: Eaton Intelligent Power Limited
Abstract: A method of operating an internal combustion engine of a type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, a camshaft on which a cam is mounted, and a rocker arm assembly having a rocker arm and a cam follower configured to engage the cam as the camshaft rotates. The method includes obtaining rocker arm position data, using the rocker arm position data to obtain camshaft position information, and using the camshaft position information in an engine management operation.
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公开(公告)号：US20220112821A1
公开(公告)日：2022-04-14
申请号：US17509321
申请日：2021-10-25
Applicant: Eaton Intelligent Power Limited
Inventor： Dale Arden Stretch
Abstract: A method of using a through axle switching rocker arm according to one example of the present disclosure is provided. The switching rocker arm comprises an outer and inner arm and a roller axle. The inner arm is pivotally coupled to the outer arm about a pivot axle and has an inner bushing that supports an inner roller. The inner bushing defines an inner diameter. The roller axle extends through the inner bushing and defines an outer diameter. The inner diameter of the inner bushing engages the outer diameter of the roller axle thereby inhibiting further pivoting of the inner arm relative to the outer arm defining a rocker arm travel constraint. The method includes designing first and second cam profiles based on the through axle switching rocker arm such that a difference in lift between the first and second cam profiles is held within the rocker arm travel constraint.
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公开(公告)号：US20210372298A1
公开(公告)日：2021-12-02
申请号：US16342353
申请日：2017-10-16
Applicant: Eaton Intelligent Power Limited
Inventor： Douglas Anthony Hughes , Matthew Richard Busdiecker , Dale Arden Stretch , Petr Liskar , Jiri CECRLE , Michael CAMPBELL
Abstract: A valvetrain suitable for an internal combustion engine of a type that includes a combustion chamber, a moveable valve having a seat formed within the combustion chamber, and a camshaft. The valvetrain includes a rocker arm assembly having a rocker arm and an electrical device that either configures the rocker arm assembly or provides position feedback for a part of the rocker arm assembly. The valvetrain includes a framework that fits around a spark plug tube while holding a component of a circuit that includes the electrical device in a position adjacent the rocker arm assembly. The position may place the component in contact with or very close to the rocker arm assembly. This framework structure may effectively utilize the available space under a valve cover while facilitating correct positioning of the component in relation to the rocker arm assembly.
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公开(公告)号：US11008900B2
公开(公告)日：2021-05-18
申请号：US16893823
申请日：2020-06-05
Applicant: Eaton Intelligent Power Limited
Inventor： Petr Liskar , Jiri Cecrle , Dale Arden Stretch , Michael J. Campbell , Tomas Drabek , James Edward McCarthy, Jr. , Austin Robert Zurface , Robert Philip Benjey , Eric John Yankovic , Brian Karl Vandeusen , Nicholas Peter Gillette , Michael James Stanton , Thomas Michael Tembreull , Anthony Leon Spoor
Abstract: A valvetrain for an internal combustion engine of the type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, and a camshaft includes a rocker arm assembly, a pivot providing a fulcrum for a rocker arm of the rocker arm assembly, and a latch assembly. An electrical device mounted to the rocker arm assembly receives power or communicates through a circuit that includes an electrical connection formed by abutment between surfaces of two distinct parts. The rocker arm assembly is operative to move one of the two abutting surfaces relative to the other in response to actuation of the cam follower. Forming an electrical connection through abutting surfaces that are free to undergo relative motion may reduce or eliminate the need to run wires to a mobile portion of the rocker arm assembly.
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公开(公告)号：US20200300129A1
公开(公告)日：2020-09-24
申请号：US16893823
申请日：2020-06-05
Applicant: Eaton Intelligent Power Limited
Inventor： Petr Liskar , Jiri Cecrle , Dale Arden Stretch , Michael J. Campbell , Tomas Drabek , James Edward McCarthy, JR. , Austin Robert Zurface , Robert Philip Benjey , Eric John Yankovic , Brian Karl Vandeusen , Nicholas Peter Gillette , Michael James Stanton , Thomas Michael Tembreull , Anthony Leon Spoor
Abstract: A valvetrain for an internal combustion engine of the type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, and a camshaft includes a rocker arm assembly, a pivot providing a fulcrum for a rocker arm of the rocker arm assembly, and a latch assembly. An electrical device mounted to the rocker arm assembly receives power or communicates through a circuit that includes an electrical connection formed by abutment between surfaces of two distinct parts. The rocker arm assembly is operative to move one of the two abutting surfaces relative to the other in response to actuation of the cam follower. Forming an electrical connection through abutting surfaces that are free to undergo relative motion may reduce or eliminate the need to run wires to a mobile portion of the rocker arm assembly.
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