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公开(公告)号：US11879400B2
公开(公告)日：2024-01-23
申请号：US17577572
申请日：2022-01-18
Inventor： Almir Gonçalves Pereira , Paulo Roberto De Oliveira
CPC classification number: F02D15/02 , F02B75/047 , F02B75/048 , F02D15/04 , F16C3/28
Abstract: A variable compression ratio device configured to be incorporated into an internal combustion engine. The internal combustion engine including one or more cylinders housing pistons that are coupled to a crankshaft. The variable compression ratio device including rotation coupler assemblies formed by gears that have internal and external teeth that are disposed at distal ends of the crankshaft to cause the crankshaft to rotate, and two or more eccentrics configured to cause translation variations of the crankshaft. Where the two or more eccentrics are positioned on trunnions of the crankshaft before and after each connecting rod and respective balances, the translation variations are to be converted into rotation and transmitted to a toothed gear and to a flange of a flywheel, and the two or more eccentrics are aligned with corresponding gears to cause changes in translation of a position of the crankshaft.
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公开(公告)号：US20230349333A1
公开(公告)日：2023-11-02
申请号：US17756954
申请日：2020-12-04
Applicant: MCE 5 Development
Inventor： René-Pierre Bertheau , Sylvain Bigot
CPC classification number: F02D15/02 , F02B75/048 , F01M1/06 , F01M11/02 , F01M1/16 , F01M2001/066 , F01M2011/025
Abstract: A telescopic control connecting rod for a variable compression ratio engine, comprises: a small end having, respectively, an eye and a piston at its ends; a big end serving as cylinder body in which the piston defines a first and a second hydraulic chamber, and a third side chamber located between the first and the second hydraulic chambers; the big end comprises two coaxial side bearings configured to establish a pivot link with a fixed part of the engine; a lubrication circuit comprising at least a first duct provided in the big end, connecting an inner space of each side bearing and the third chamber, whatever the length of the connecting rod, and comprising at least one second duct provided in the small end, connecting the third chamber and the eye.
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3.发明授权公开(公告)号：US11668259B1
公开(公告)日：2023-06-06
申请号：US18058069
申请日：2022-11-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： J. Michael Gwidt , Andrew B. Gillett , Karen Margaret-Bell Gwidt
CPC classification number: F02D41/1401 , F02D13/02 , F02D41/32 , F02D41/38 , F02B75/048 , F02D13/0269 , F02D41/2422 , F02D2041/001 , F02D2041/1412 , F02D2041/1433 , F02D2041/389 , F02D2200/0625 , F02D2200/101 , F02D2200/1002
Abstract: Methods and systems for optimizing fuel economy and maintaining particulate emissions below a threshold of an engine system in a vehicle. An engine system has port fuel injection, direct injection, variable compression ratio, and independent compression/expansion. A processor predicts settings for the four systems that optimize for a fuel economy that is maximized. A particulate rate of the engine system is computed based on the settings. A determination is made of whether the particulate rate is below a threshold. When the particulate rate is below the threshold, command signals are delivered to actuators of the systems to move to the settings. When the threshold is exceeded, the settings are revised to maintain the particulate below the threshold while optimizing for fuel economy.
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公开(公告)号：US20190063311A1
公开(公告)日：2019-02-28
申请号：US15687836
申请日：2017-08-28
Applicant: Southwest Research Institute
Inventor： Raphael GUKELBERGER , Steven H. ALMARAZ
CPC classification number: F02B75/32 , F02B47/08 , F02B75/048 , F02D41/0047 , F02D41/008 , F02M26/43 , F16C3/08 , F16C3/28 , F16C11/02 , F16C2360/22
Abstract: A four stroke internal combustion engine with dedicated exhaust gas recirculation and method of operating such engine, wherein the engine comprises a plurality of combustion cylinders including main cylinders and a dedicated exhaust gas recirculation cylinder, wherein each cylinder includes a piston; a crankshaft, which is rotatable in a direction, and defines a main crankshaft axis, and includes a plurality of crankpins. Each of the crankpins is coupled to at least one of the pistons. The crankpins affixed to the pistons of the main cylinders are spaced at an interval around the main crankshaft axis. The crankpin affixed to the piston of the dedicated exhaust gas recirculation cylinder is spaced at an offset of 5 to 50 degrees from the interval in either direction relative to the direction of crankshaft rotation.
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公开(公告)号：US20180195434A1
公开(公告)日：2018-07-12
申请号：US15796284
申请日：2016-04-27
Applicant: Wladyslaw Kurek
Inventor： Wladyslaw Kurek
CPC classification number: F02B75/32 , F01B9/06 , F02B75/047 , F02B75/048 , F02B75/06
Abstract: An improved reciprocating internal combustion engine converts a larger percentage (than a conventional engine) of the linear force exerted by the piston into rotation of the crankshaft when the combustion pressures are at maximum, high or intermediate levels. This increased conversion results in more power per cycle, when compared to conventional engines of comparable size. The improved engine includes an engine block, a cylinder within the engine block, a piston slidably positioned within the cylinder for a reciprocating motion, a crankshaft, a connecting rod and a torque arm. One side of the connecting rod is pivotally mounted to the piston and on the other side to the torque arm. The torque arm is also operatively rigidly connected to a template that is mounted to the engine block. The template guides the movement of the torque arm along a predetermined path. The template is configured to position the torque arm at an angle with respect to the radius of the crankshaft at the pivot point such that the combined value of vectors that contribute to turning the crankshaft are significantly larger than that of the turning vectors in a conventional engine, when the combustion pressure in the cylinder is at the maximum high or intermediate levels.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180179963A1
公开(公告)日：2018-06-28
申请号：US15579746
申请日：2016-06-06
Applicant: Gomecsys B.V.
CPC classification number: F02D15/02 , F01L1/047 , F01L13/0036 , F01L2013/0078 , F02B41/04 , F02B75/02 , F02B75/048 , F02B75/18 , F02B2075/027 , F02B2075/1816 , F02D13/0215 , F02D13/0242 , F16F15/265 , F16H59/74 , F16H61/0213 , Y02T10/18
Abstract: A four-stroke internal combustion engine including variable compression ratio comprises a crankcase including a crankshaft having a crankpin and being supported by the crankcase and rotatable with respect thereto about a crankshaft axis, a connecting rod including a big end and a small end, a crank member being rotatably mounted on the crankpin, and comprising at least a bearing portion which is eccentrically disposed with respect to the crankpin, a crank member drive system for rotating the crank member at a rotation frequency with respect to the crankcase which is half of that of the crankshaft, and a control system for operating the engine with repetitive cycles, wherein the compression ratio in the compression stroke is changed. The control system is configured to interrupt the repetitive cycles by rotating the crankshaft an additional single revolution between two successive combustion strokes for switching between a high and low compression ratio.
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公开(公告)号：US09982596B2
公开(公告)日：2018-05-29
申请号：US15036626
申请日：2014-11-13
Applicant: AUDI AG
Inventor： Matthias Brendel , Markus Wild
CPC classification number: F02B75/048 , F02D15/02 , F16C3/18 , F16J1/14
Abstract: A multi-joint crank drive of an internal combustion engine includes at least one coupling member supported on a crankpin of a crankshaft for rotation about a coupling member rotation axis; and at least one articulated connecting rod supported on a crankpin of an eccentric shaft for rotation about an eccentric rotation axis, wherein the at least one coupling member is connected with a piston connecting rod of a piston of the internal combustion engine for pivoting about a piston connecting rod rotation axis, and with the at least one articulated connecting rod for pivoting about an articulated connecting rod rotation axis, and wherein a rotation axis of the eccentric shaft is situated above a plane which receives a rotation axis of the crankshaft and is perpendicular to at least one cylinder longitudinal center axis, and wherein, respectively in relation to a total travel of the piston.
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公开(公告)号：US20180051626A1
公开(公告)日：2018-02-22
申请号：US15784687
申请日：2017-10-16
Applicant: Thomas Steve HUMPHRIES
Inventor： Thomas Steve HUMPHRIES
CPC classification number: F02B75/048 , F01B9/02 , F02B41/04 , F02B75/045 , F02B75/32 , F02F7/0019 , F16H21/32
Abstract: A fluid flow machine includes a casing including a cylinder and a crankshaft support. A piston is slidably disposed in the cylinder for reciprocating along an axis of the cylinder. A crankshaft includes a main bearing journal rotationally supported in the crankshaft support, a crankpin radially offset from an axis of the main bearing journal and a crank web connecting the main bearing journal and the crankpin. A multi-linkage connecting rod mechanism is connected between the piston and crankpin and includes a connecting rod, a first hinge link and a crankpin link pivotally connected to each other. A force transfer mechanism connects the multi-linkage connecting rod mechanism to the casing for transferring a vertical piston force into a horizontal crankpin force.
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公开(公告)号：US09856810B2
公开(公告)日：2018-01-02
申请号：US14654005
申请日：2013-12-16
Applicant: NISSAN MOTOR CO., LTD.
Inventor： Eiji Takahashi , Shinobu Kamada
CPC classification number: F02D41/123 , F02B75/04 , F02B75/048 , F02D15/02 , F02D41/024 , F02D41/0295 , F02D41/126 , F02D2200/0814 , F02D2250/36 , Y02T10/26
Abstract: A fuel cut during deceleration is executed at time point t1. An oxygen storage amount (rOS) which increases with this fuel cut is estimated based on an exhaust air-fuel ratio and an intake air quantity. When the oxygen storage amount (rOS) reaches a threshold value (at time point t2), a target compression ratio (tCR) is corrected to become lower than a basic target compression ratio (tCR). Although a fuel recovery is executed at time point t4, a combustion temperature is lowered because of the lowering of the mechanical compression ratio, so that a production of NOx in a combustion chamber is suppressed. Therefore, worsening of NOx is suppressed even if the oxygen storage amount (rOS) of exhaust-emission purification catalyst (4) is excessive.
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10.发明申请公开(公告)号：US20170276072A1
公开(公告)日：2017-09-28
申请号：US15505190
申请日：2015-06-16
Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventor： Markus POPP , Andreas MOELLER , Swen DOERRIE
CPC classification number: F02D15/02 , F02B75/048 , F16C7/023 , F16C7/06 , F16C23/10 , F16C2360/22
Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston internal combustion engine has an eccentric bushing which is rotatably arranged in a bore of a connecting rod eye. Said eye encloses a crank pin of a crankshaft, and the bushing is rotatably guided in the bore and can be locked via locking openings, which are arranged to be offset from each other by preferably approximately 180°. The connecting rod has a locking apparatus which interacts optionally with the locking openings and via which the eccentric bushing can only ever be transferred from one position to the next. The locking apparatus has a sliding guideway extending parallel to the longitudinal axis of the bore of the connecting rod bearing eye. The sliding guide interacts with actuating pins arranged in the locking openings and can be displaced radially with respect to the bushing.
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