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公开(公告)号：US20240151166A1
公开(公告)日：2024-05-09
申请号：US18482551
申请日：2023-10-06
Applicant: SUZUKI MOTOR CORPORATION
Inventor： Yuichi KAWANO , Hidekuni OTA , Shintaro ISHIDA
Abstract: A decompression device is attached to an exhaust camshaft, and the exhaust camshaft is supported by a cylinder head. The decompression device includes a decompression camshaft formed with a decompression cam that can protrude and be immersed with respect to a base circle of an exhaust cam of the exhaust camshaft, a decompression arm that moves in an opening direction due to centrifugal force accompanying rotation of the exhaust camshaft to protrude the decompression cam, and a spring that moves the decompression arm in a closing direction by spring force resisting the centrifugal force to immerse the decompression cam. In the decompression device, the opening direction of the decompression arm can be changed in a same direction or in an opposite direction to a rotation direction of the exhaust camshaft for each cylinder.
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公开(公告)号：US20230313713A1
公开(公告)日：2023-10-05
申请号：US17713707
申请日：2022-04-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Maqsood Rizwan ALI KHAN , Mark R. CLAYWELL
Abstract: A valve assembly includes a valve body defining a bore therein, a valve stem, a spring retainer, a valve spring, and a detent mechanism. The valve stem extends through the bore in the valve body and is adjustable between an open position and a closed position. The spring retainer is spaced apart from the valve body along a longitudinal axis of the valve stem and fixed relative to the valve body. The spring retainer defines a bore through which the valve stem extends. The valve spring is captured between the valve body and the spring retainer and is configured to apply a biasing force to the valve stem that biases the valve stem toward the closed position. The detent mechanism is configured to increase the biasing force applied to the valve stem when the valve stem is in the closed position or within a predetermined distance of the closed position.
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公开(公告)号：US20180347412A1
公开(公告)日：2018-12-06
申请号：US15610891
申请日：2017-06-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan W Hayman , Jared M Satkowiak , Robert S McAlpine
CPC classification number: F01L1/14 , F01L1/047 , F01L1/08 , F01L1/146 , F01L1/18 , F01L1/183 , F01L1/462 , F01L13/0005 , F01L2001/054 , F01L2001/256 , F01L2001/467 , F01L2013/001 , F01L2101/00 , F01L2103/00 , F01L2105/00 , F01L2107/00
Abstract: An improved cam follower for a vehicle engine includes a body, a spring seat, a tower, a spring and an anti-rotation member. The body defines a body diameter, a first open end, and a second end. The spring seat includes a spring seat opening and an interlock portion. The spring seat may be affixed to the first open end of the body. The spring seat further includes a spring seat diameter wherein the spring seat diameter is greater than the body diameter. The tower may be disposed in a pin housing through the spring seat opening at the first open end of the body. The tower further includes an upper flange and a spring which abuts the upper flange at a first spring end. The second spring end abuts the spring seat. The anti-rotation member accordingly may be coupled to the body via the spring seat.
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公开(公告)号：US10082052B2
公开(公告)日：2018-09-25
申请号：US15427865
申请日：2017-02-08
Applicant: Caterpillar Inc.
Inventor： Ashwin A. Hattiangadi , Selvakumar Selvaraj
CPC classification number: F01L1/2411 , F01L1/053 , F01L1/18 , F01L1/181 , F01L1/2416 , F01L1/26 , F01L1/32 , F01L1/462 , F01L2101/00 , F01L2103/00
Abstract: A replaceable hydraulic lash adjuster and method for assembling such are disclosed. The replaceable hydraulic lash adjuster includes a body, a piston, a check valve and a spring. The body configured to be received in and released from a compartment of a rocker arm. The body including a sidewall surrounding a floor. The floor including a passage that extends between an upper cavity and a lower cavity of the body. The piston disposed in the lower cavity. The piston defining a pocket. A check valve is disposed inside the lower cavity and a spring is disposed inside the pocket. The replacable hydraulic lash adjuster is configured to be slidingly removeable from the rocker arm.
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公开(公告)号：US20180259023A1
公开(公告)日：2018-09-13
申请号：US15760303
申请日：2016-09-15
Applicant: ThermoLift, Inc.
Inventor： Peter Hofbauer , James F. Smith , Seann Convey , David Yates
CPC classification number: F16F1/028 , F01L1/462 , F01L3/10 , F01L9/04 , F01L2009/0434 , F01L2009/0436 , F02G1/053 , F02G2270/42 , F16F1/06 , F16F3/04 , F16F2226/04 , F16F2232/08 , F16F2234/02 , H01F7/1638
Abstract: Reciprocating apparatuses such as a displacer in a Stirling engine or Vuilleumier (thermally-driven) heat pump and such as a poppet valve in an internal combustion engine have been known to be built with a mechatronic actuator. The reciprocating element has two springs in compression biased against each other. It has been found that conventional springs in compression introduce losses. A spring is disclosed in which a portion of the coil is wound in a clockwise direction and a portion is wound in a clockwise direction. Also, in reciprocation, the spring is in compression at one end of travel and in tension at the other end of travel.
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Patent Agency Ranking
公开(公告)号：US20180238202A1
公开(公告)日：2018-08-23
申请号：US15899725
申请日：2018-02-20
Applicant: Maxitrol Company
Inventor： Mark Geoffrey Masen , Jason Sagovac
CPC classification number: F01L1/462 , F01L9/02 , F01L2820/00 , F16F1/126 , F16K31/043 , F16K31/0651 , G01F1/26 , G01F15/005
Abstract: A beam coupling includes a spring extending between top and bottom plates to transmit rotational motion while providing longitudinal compressibility and accommodating axial misalignment without loss of effective and efficient operation; a fluid flow control system may include a beam coupling operatively disposed between a motor and a valve.
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公开(公告)号：US20180238198A1
公开(公告)日：2018-08-23
申请号：US15437028
申请日：2017-02-20
Applicant: DELPHI TECHNOLOGIES IP LIMITED
Inventor： Chad E. Uckermark , Joseph M. West
CPC classification number: F01L1/18 , F01L1/047 , F01L1/185 , F01L1/205 , F01L1/462 , F01L13/0005 , F01L13/0015 , F01L13/0036 , F01L2001/186 , F01L2001/467 , F01L2103/00 , F01L2105/02 , Y10T74/20882 , Y10T74/2107
Abstract: A rocker arm includes an outer arm defining a stop aperture with a stop surface; an inner arm which selectively pivots relative to the outer arm; a latching mechanism which switches the rocker arm between a coupled state in which the inner arm is prevented from pivoting relative to the outer arm in a first direction and a decoupled state in which the inner arm pivots relative to the outer arm; a lost motion spring which biases the inner arm to pivot relative to the outer arm in a second direction which is opposite from the first direction; and a stop pin fixed to the inner arm and extending into the stop aperture such that the stop pin is circumferentially surrounded by the stop surface and such that the stop pin within the stop aperture limits the extent to which the inner arm pivots relative to the outer arm.
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公开(公告)号：US20180058268A1
公开(公告)日：2018-03-01
申请号：US15677823
申请日：2017-08-15
Applicant: SUZUKI MOTOR CORPORATION
Inventor： Koichi TANAKA , Kunio ARASE
CPC classification number: F01L1/18 , F01L1/053 , F01L1/08 , F01L1/181 , F01L1/26 , F01L1/46 , F01L1/462 , F01L2105/00 , F01L2250/02 , F01L2810/00 , F01L2810/03
Abstract: A rocker arm includes a pivot portion that is journaled by a rocker arm shaft, a contact portion that projects from the pivot portion to a side of a valve cam, and a pressing portion that projects from the pivot portion to a side of a valve. While including a slipper projecting from the pivot portion in outer side in an axial direction to a side of a camshaft, an overhead valve actuation mechanism for the engine includes a stopper portion with which the slipper comes in contact when the rocker arm swings and reaches a predetermined position at a position opposing the slipper.
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公开(公告)号：US09885260B2
公开(公告)日：2018-02-06
申请号：US15169306
申请日：2016-05-31
Applicant: Ford Global Technologies, LLC
Inventor： Douglas Raymond Martin , John Eric Rollinger
CPC classification number: F01L1/462 , F01L1/46 , F01L3/24 , F01L2001/0537 , F01L2013/001 , F01L2800/10 , F01L2800/11 , F01L2800/14 , F01L2810/05 , F01L2820/041 , F01L2820/042
Abstract: Systems and methods for operating exhaust valves of an internal combustion engine with poppet exhaust valves are described. The systems and methods provide for locking exhaust valves in a closed state when the exhaust valves are in mechanical communication with a base circle of a camshaft lobe. Locking the exhaust valves in a closed state may reduce the possibility of exhaust pressures opening the exhaust valves at times they may not be desired to be open.
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公开(公告)号：US09797276B2
公开(公告)日：2017-10-24
申请号：US14808685
申请日：2015-07-24
Applicant: HUSCO Automotive Holdings LLC
Inventor： Allen Tewes , Austin Schmitt , Brian Heidemann , Dean Wardle
CPC classification number: F01L1/344 , F01L1/3442 , F01L1/462 , F01L2001/3443 , F01L2001/34489
Abstract: A control system for varying cylinder valve timing of an internal combustion engine is provided. The control system includes a cam phase actuator having first and second actuator ports to adjust a rotational phase of a camshaft relative to a crankshaft, a first control valve, a second control valve, and a dynamic regeneration valve. In one embodiment, the dynamic regeneration valve is configured to enable the cam phase actuator to switch between operating in an oil pressure actuated mode and a cam torque actuated mode when adjusting the rotational phase of the camshaft relative to the crankshaft.
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