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公开(公告)号：US11994042B1
公开(公告)日：2024-05-28
申请号：US18236834
申请日：2023-08-22
Applicant: Neutron Engines LLC
Inventor： Craig Williams
CPC classification number: F01L1/053 , F01L1/022 , F01L1/026 , F01L1/46 , F01L2001/0537 , F01L2250/02 , F01L2250/06 , F02B75/22
Abstract: A piston engine described allows identical cylinder heads rather than requiring mirror image left and right heads. The engine has front and rear sides, with engine block containing two opposing cylinder banks. Identical heads mounted on block, with overhead camshaft structures in each head. Crankshaft between banks has front and rear gears. At rear is reverse-rotation gear mechanism with internal and external gears. External gear engages crankshaft's rear gear. First chain connects reverse-rotation internal gear to first camshaft sprocket on one head at rear. Second chain connects crankshaft's front gear to second camshaft sprocket on other head at front. Allows driving overhead camshafts of identical heads rather than requiring left and right mirror image heads.
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公开(公告)号：US20190153911A1
公开(公告)日：2019-05-23
申请号：US16186475
申请日：2018-11-09
Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
Inventor： Manabu MIYATA
CPC classification number: F01L1/462 , F01L1/143 , F01L3/08 , F01L3/10 , F01L2001/0537 , F01L2250/02 , F02F1/4285
Abstract: An internal combustion engine 5 includes an intake valve spring 60 including a closely-wound section 62 and a sparsely-wound section 63. The closely-wound section 62 is provided so that elemental wire portions thereof are closely in contact with each other in the direction of the coil axial line L1 while an intake valve closes an intake port. The sparsely-wound section 63 is provided so that elemental wire portions thereof are spaced apart from each other in the direction of the coil axial line L1 while the intake valve closes the intake port. The coil outer diameter D62 of at least a part of the closely-wound section 62 is smaller than the coil outer diameter D63 of at least a part of the sparsely-wound section 63.
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公开(公告)号：US20190048806A1
公开(公告)日：2019-02-14
申请号：US15674980
申请日：2017-08-11
Applicant: GM Global Technology Operations LLC
Inventor： Christopher E. Whitney , David N. Hayden
CPC classification number: F02D13/0207 , B60W2510/0657 , F01L1/053 , F01L2001/0537 , F01L2013/0052 , F01L2013/101 , F01L2250/02 , F01L2250/04 , F01L2800/00 , F02D13/0211 , F02D13/0219 , F02D2041/001 , F02D2200/1002 , F02D2250/21 , F16H59/141 , F16H61/143 , F16H61/148
Abstract: A method of transitioning between two intake valve lift states while providing constant engine torque output comprehends the steps of receiving a lift change request from an engine control device, determining the current phase angles of the camshafts, and determining whether the intake and exhaust camshafts are at transition positions. The transition positions are experimentally or empirically determined combinations of operating conditions that result in constant engine torque output before and after the intake valve lift transition. If they are, an appropriate, i.e., low to high or high to low cam lift state transition of the intake valves occurs. If they are not, the cam phasers move the intake and exhaust camshafts to transition positions. When the cam phasers have moved the intake and exhaust camshafts to the transition positions, i.e., positions of constant engine torque output, the intake valve lift transitions from high to low or low to high.
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公开(公告)号：US20180363520A1
公开(公告)日：2018-12-20
申请号：US16060498
申请日：2016-12-09
Applicant: 2575168 ONTARIO INC.
Inventor： John David Jeffery
CPC classification number: F01L13/0047 , F01L1/30 , F01L1/352 , F01L2013/103 , F01L2250/02 , F01L2250/04 , F01L2250/06
Abstract: A valve assembly selectively varies the timing of the valves in an internal combustion engine cycle by way of a first and second camshaft. Each valve has a shuttle portion and a valve portion. Upper and lower cam followers on the shuttle portion engage with first and second cams on each of the first and second camshafts to move the valve between an open and closed position with reference to a valve seat on an engine block.
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公开(公告)号：US20180363512A1
公开(公告)日：2018-12-20
申请号：US16060027
申请日：2016-12-26
Applicant: MIKUNI CORPORATION
Inventor： Takahiro OGURA , Chikara OIKAWA
CPC classification number: F01L1/047 , F01L1/04 , F01L1/3442 , F01L1/356 , F01L1/46 , F01L2001/0471 , F01L2001/34426 , F01L2001/3443 , F01L2001/34433 , F01L2001/34453 , F01L2001/34479 , F01L2001/34483 , F01L2101/00 , F01L2103/00 , F01L2250/02
Abstract: A valve timing change device includes: a housing rotor (10); a vane rotor; a fastening bolt (40); and an advance angle oil passage communicating with an advance angle chamber and a delay angle oil passage communicating with a delay angle chamber, via oil passages which are open at intervals on an outer-circumferential surface of the fastening bolt. The vane rotor includes: a rotor body (20) formed of a material having a thermal expansion coefficient greater than that of the fastening bolt; and a rotor sleeve (30) that is formed of a material having a thermal expansion coefficient equal to that of the fastening bolt and is integrally incorporated such that the rotor sleeve does not contact a cam shaft and tightly contacts the outer circumferential surface (41a), in a region in which the advance angle oil passage (23a) and the delay angle oil passage (35) are blocked from each other.
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公开(公告)号：US20180340465A1
公开(公告)日：2018-11-29
申请号：US15580828
申请日：2016-06-16
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Kentaro MIKAWA
IPC: F02B33/18
CPC classification number: F02B33/18 , F01L1/344 , F01L2001/0537 , F01L2250/02 , F01L2800/01 , F01L2820/032 , F02D13/02 , F02D41/009 , F02D41/062 , F02D2041/001 , F02D2041/0092
Abstract: The present invention has: a crank angle sensor 4 that outputs a crank angle signal in response to rotation of a crankshaft 2, the crank angle signal being preset to indicate reference positions; a cam sensor 5 that outputs cam signal pulses in response to rotation of an intake camshaft 3 for opening and closing an engine valve; an electric motor 6 that relatively rotates intake camshaft 3 with respect to crankshaft 2, so that electric motor 6 can change a rotational phase angle of intake camshaft 3 with respect to crankshaft 2; and an electronic control unit 7 that computes an actual rotational phase angle of intake camshaft 3 based on a first cam signal pulse detected after start of cranking and a first reference position of the crank signal detected thereafter, to calculate an absolute position of a variable valve timing mechanism 14.
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公开(公告)号：US20180274400A1
公开(公告)日：2018-09-27
申请号：US15904330
申请日：2018-02-24
Applicant: ECO Holding 1 GmbH
Inventor： Andreas Heilig Berwinkl , Rene Hentsch Heym , Markus Todt , Stephan Wanner
CPC classification number: F01L1/34413 , F01L1/047 , F01L1/344 , F01L1/3442 , F01L1/46 , F01L2001/0473 , F01L2001/34423 , F01L2001/34433 , F01L2001/34469 , F01L2001/34479 , F01L2103/00 , F01L2250/02
Abstract: A cam phaser for a cam shaft arrangement including an inner cam shaft and an outer cam shaft arranged concentrical relative to the inner cam shaft, the cam phaser including at least one rotor; at least one stator; and at least one compensation element configured to compensate axial and/or radial and/or angular tolerances, wherein the stator is connectable torque proof at least indirectly through a drive gear with the outer cam shaft and the rotor is connectable torque proof with the inner cam shaft, wherein the drive gear is separate from the stator and attachable torque proof at the outer cam shaft, wherein the stator is rotatably supportable on the inner cam shaft, wherein plural compensation elements are provided which are arranged evenly distributed in a circumferential direction, wherein the compensation elements are configured torsion stiff in the circumferential direction and attached between the stator and the drive gear.
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公开(公告)号：US20180252170A1
公开(公告)日：2018-09-06
申请号：US15760574
申请日：2017-02-07
Applicant: MAZDA MOTOR CORPORATION
Inventor： Masanori HASHIMOTO
CPC classification number: F02D13/0215 , F01L1/185 , F01L1/2405 , F01L1/3442 , F01L13/0005 , F01L2001/0537 , F01L2001/34426 , F01L2013/001 , F01L2105/00 , F01L2250/02 , F01L2800/01 , F01L2800/05 , F01L2820/04 , F01L2820/041 , F01L2820/042 , F01L2820/044 , F02D13/06
Abstract: An oil supply control device for an engine includes: a hydraulic controller which outputs a control value to an adjusting device to cause a detected hydraulic pressure detected by a hydraulic pressure sensor to coincide with a predetermined hydraulic pressure value; a determination portion which compares an output control value output from the hydraulic controller to the adjusting device when the detected hydraulic pressure coincides with the predetermined hydraulic pressure value and a control value stored in a memory, to determine whether or not a difference between the output control value and the stored control value lies within a predetermined allowable range; and a device controller which allows activation of a hydraulic actuating device when an oil temperature is not lower than a first temperature in a case where the difference lies within the allowable range, inhibits activation of the hydraulic actuating device when the oil temperature is lower than a second temperature higher than the first temperature in a case where the difference does not lie within the allowable range, and allows activation of the hydraulic actuating device when the oil temperature is not lower than the second temperature in a case where the difference does not lie within the allowable range.
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公开(公告)号：US20180252125A1
公开(公告)日：2018-09-06
申请号：US15864656
申请日：2018-01-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Keisuke SASAKI , Noriyasu ADACHI , Shigehiro SUGIHIRA , Takayoshi KAWAI , Shinji SADAKANE , Hiroyuki SUGIHARA , Kaoru OHTSUKA
CPC classification number: F01L13/0036 , F01L1/047 , F01L1/053 , F01L2013/0052 , F01L2013/101 , F01L2013/113 , F01L2013/116 , F01L2250/02 , F01L2250/04
Abstract: An internal combustion engine system is provided with a cam switching device including a cam groove provided on the outer peripheral surface or a camshaft and an actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The internal combustion engine system is configured, in causing the cam switching device to perform a cam switching operation, to control the actuator such that the engagement pin is seated on a forward outer peripheral surface which is located more forward than an end of the cam groove on the forward side with respect to an insert section of the cam groove in the rotational direction of the camshaft.
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公开(公告)号：US20180202328A1
公开(公告)日：2018-07-19
申请号：US15406185
申请日：2017-01-13
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Renato De Oliveira Ghiraldi , Alexandre Camilo , Peter Cantin
IPC: F01L1/344
CPC classification number: F01L1/34416 , F01L1/3442 , F01L1/46 , F01L2001/34423 , F01L2001/34453 , F01L2001/34469 , F01L2001/34483 , F01L2103/00 , F01L2250/02
Abstract: A cam phaser has a stator, a rotor positioned in the stator and including a locking pin, a locking cover including a receiving feature for receiving the locking pin, a cover plate, and a check valve plate positioned between the stator and the locking cover and including a plurality of valve elements. The cam phaser also has a plurality of first openings in each of the stator, locking cover, and check valve plate, a plurality of second openings in the locking cover, and a third opening formed in the check valve plate. The cam phaser further includes a retention feature for aligning components of the cam phaser during assembly, the retention feature including one or more tabs on a first component and one or more indentations on a second component receiving the one or more tabs.
