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公开(公告)号：US11149594B2
公开(公告)日：2021-10-19
申请号：US16999093
申请日：2020-08-21
发明人： Naoya Tanuma
摘要： Even in the case where, due to distortion (undulation) or the like of an end surface of an adjusting screw abutting on a valve stem end, there exists a non-linear undulation movement amount in a movement amount of the end surface with respect to a rotation return angle of the adjusting screw, the undulation movement amount is continuously measured, and a screw return movement amount based on a screw pitch and on the rotation return angle is continuously calculated, and, when a total movement amount of the undulation movement amount and the screw return movement amount has attained a prescribed clearance, return rotation is ended.
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公开(公告)号：US20210189914A1
公开(公告)日：2021-06-24
申请号：US16771086
申请日：2017-12-13
申请人： Cummins Inc.
摘要： The present disclosure provides a remote mount for an idler gear assembly, comprising: a gear mounting plate including a plurality of bores configured to receive a corresponding plurality of fasteners to mount a gear assembly to the gear mounting plate; and an attachment bracket including a plurality of mounting openings configured to receive a corresponding plurality of bolts to mount the remote mount to a cylinder head. The gear mounting plate supports the gear assembly such that a gear of the gear assembly rotates about an axis that is parallel to an axis of a crankshaft of an engine and the attachment bracket mounts to an upper surface of the cylinder head.
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公开(公告)号：US10851681B2
公开(公告)日：2020-12-01
申请号：US16250420
申请日：2019-01-17
发明人： Mark VanWingerden , Eric Yankovic
摘要： A rocker arm assembly for a Type II valvetrain arranged for cooperation with a cylinder head includes a roller finger follower (RFF) and a lost motion with reset (LMR) hydraulic assembly. The RFF has a first end and a second end. The first end cooperates with a valve. The LMR hydraulic assembly has a hydraulic control element and a plunger. The LMR hydraulic assembly moves the plunger between a rigid position and a non-rigid position. The LMR hydraulic assembly is configured at the second end of the RFF.
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公开(公告)号：US10648373B2
公开(公告)日：2020-05-12
申请号：US16077645
申请日：2016-02-16
发明人： Per Persson
摘要： A device for actuating at least one valve in an internal combustion engine includes a camshaft arrangement including a hollow outer shaft and an inner shaft, which is concentrically mounted inside of the outer shaft to be pivotable relative to the outer shaft. A first cam lobe is mounted on one of the inner shaft and the outer shaft in a rotationally fixed manner and a second cam lobe is mounted on the other of the inner shaft and the outer shaft in a rotationally fixed manner. The device further includes a rocker arm arrangement including a first primary rocker arm, which is arranged to follow the first cam lobe and arranged to actuate a first valve when it follows the first cam lobe. The rocker arm arrangement further includes an auxiliary rocker arm, which is arranged to follow the second cam lobe. The auxiliary rocker arm is adapted to actuate the first primary rocker arm so that an opening tune of the first valve may be extended by the auxiliary rocker arm following the second cam lobe.
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公开(公告)号：US10526929B2
公开(公告)日：2020-01-07
申请号：US15271319
申请日：2016-09-21
摘要： A valvetrain for an engine includes a pair of valves that are disposed in a spaced apart relation to one another, and in which each of the valves has an elongated valve stem. The valvetrain further includes a valve bridge that is coupled to the pair of valves. The valve bridge is configured to define a pair of receptacles to at least partly receive the pair of valve stems therein. The valve bridge further defines a central recess that is located midway between the pair of receptacles and disposed in a co-planar relationship with the pair of receptacles.
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6.发明申请公开(公告)号：US20190234246A1
公开(公告)日：2019-08-01
申请号：US16318381
申请日：2017-07-18
发明人： Marco ALESSANDRIA
CPC分类号： F01L1/181 , F01L1/20 , F01L1/46 , F01L2001/467
摘要： A method for setting lash on a rocker arm assembly having a lost motion stroke includes: providing a rocker arm having a lost motion shaft including a collar, the lost motion shaft being biased toward a valve bridge by a lost motion spring, the lost motion shaft being translatable along a bore defined in the rocker arm; inserting a feeler gage in an area between the collar and the rocker arm; and adjusting an adjusting screw until a desired lash is attained.
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公开(公告)号：US10364713B2
公开(公告)日：2019-07-30
申请号：US15439598
申请日：2017-02-22
发明人： Hartmut Fischer
摘要： A method for controlling a drivetrain of a motor vehicle is disclosed. Either a start mode for starting the reciprocating engine is activated via the driving vehicle wheel, or a coasting mode is activated for driving the reciprocating engine via the driving vehicle wheel. At least one volume-reducing stroke is executed that follows an intake stroke for at least one cylinder of the reciprocating engine with at least intermittently open cylinder. Alternately at least one volume-enlarging stroke is executed for at least one cylinder of the reciprocating engine, which is followed by a compression stroke of this cylinder, and at least one volume-reducing stroke of this cylinder, which follows an expansion stroke that follows the compression stroke, with a cylinder that is closed, if possible, in this operating mode.
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公开(公告)号：US10253657B2
公开(公告)日：2019-04-09
申请号：US15437028
申请日：2017-02-20
发明人： Chad E. Uckermark , Joseph M. West
摘要： 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：US20190101030A1
公开(公告)日：2019-04-04
申请号：US16041950
申请日：2018-07-23
发明人： Yoshiaki TAKAGI
摘要： Provided is a valve clearance adjusting method by which an accurate valve clearance adjustment can be easily performed regardless of the tolerance of pitch dimensions of an adjusting screw. The valve clearance adjusting method including: measuring a cam profile of the camshaft 50 mounted on the cylinder head 100; identifying, on the basis of a measurement result of the cam profile, a predetermined rotation angle θV of the camshaft 50 at which a predetermined lift amount corresponding to a predetermined valve clearance is obtained; rotating the camshaft 50 and allowing a pressed portion 61, 71 of the rocker arm 60, 70 to face a cam surface at the predetermined rotation angle θV; rotating an adjusting screw 90 with the pressed portion faced with the cam surface and setting a valve clearance to zero; and fastening the adjusting screw 90 with a lock nut 91.
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公开(公告)号：US20180334930A1
公开(公告)日：2018-11-22
申请号：US15600253
申请日：2017-05-19
申请人： Caterpillar Inc.
摘要： A rocker arm for an engine valve actuator assembly is disclosed. The rocker arm may include a rocker arm body disposed between a first and second arm end. Furthermore, a rocker arm bore and an adjuster compartment may be defined proximal to the second arm end. The rocker arm may further include a roller positioned at the first arm end and operably coupled to a cam, the cam configured to actuate the rocker arm between a first and second position. The rocker arm may further include a shaft inserted through a shaft mounting aperture and the rocker arm is configured to rotate about the shaft between the first and second positions. Furthermore, a fluid passage may be defined within the rocker arm body extending between a first passage opening formed in a bearing surface of the shaft mounting aperture and a second passage opening that opens into the adjuster compartment.
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