Eight Cylinder Patents (Class 123/54.7)
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Patent number: 11293340Abstract: According to the invention, a method is provided of operating a combustion engine comprising more than three cylinders with cylinder valves that are operated in a cycle of fuel intake, pressurizing, firing and exhaust strokes. The method comprises carrying out the cycle for at least two cylinders in a simultaneous operation; and having the simultaneously operated cylinders to exhaust in a manifold that couples to a single turbine.Type: GrantFiled: March 6, 2019Date of Patent: April 5, 2022Assignee: DAF Trucks N.V.Inventor: Dirk-Jan De Jong
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Patent number: 11236644Abstract: Systems and methods for an engine are provided. The engine includes a straight rocker shaft passing through each of a first rocker arm and a second rocker arm, the first rocker arm being shaped differently from the second rocker arm.Type: GrantFiled: March 31, 2021Date of Patent: February 1, 2022Assignee: Powerhouse Engine Solutions Switzerland IP Holding GmbHInventors: Sandeep Kamble, Dattatraya Somnath Bhagoji
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Patent number: 11066968Abstract: A marine engine has a crankcase containing lubricant; an intake plenum for conveying intake air for combustion in the marine engine; and a cooling apparatus located between the crankcase and the intake plenum. The cooling apparatus is configured to cool both the lubricant in the crankcase and the intake air in the intake plenum.Type: GrantFiled: December 13, 2019Date of Patent: July 20, 2021Assignee: Brunswick CorporationInventors: Thomas F. Nickols, James E. Clevenger, Daniel P. Hoffman
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Patent number: 10082074Abstract: The present disclosure relates to a four-stroke reciprocating piston engine in a V configuration having 16 cylinders, having a counter-clockwise direction of rotation, having an ignition timing control which fires the cylinders A1 to A8 and B1 to B8 in one of the following firing sequences, wherein the direction of rotation and the cylinder numbering are defined in accordance with DIN ISO 1204: a) A1-B2-A5-B4-A7-B8-A3-A8-B5-A6-B7-A2-B3-A4-B1-B6 b) A1-B2-A5-A2-B3-A4-B1-A8-B5-A6-B7-B4-A7-B8-A3-B6 c) A1-B4-A3-B2-A7-B6-A5-B8-B3-A8-B7-A4-B5-A2-B1-A6 d) A1-B4-A3-B2-B5-A2-B1-A6-B3-A8-B7-A4-A7-B6-A5-B8 e) A1-B2-A6-B4-A8-A4-B1-A7-B6-A5-B8-A2-B3-B7-A3-B5 f) A1-B2-A6-B4-A8-B7-A3-A7-B6-A5-B8-A2-B3-A4-B1-B5 g) A1-B2-A6-A2-B3-A4-B1-A7-B6-A5-B8-B4-A8-B7-A3-B5 h) A1-B4-A3-B2-A8-B5-A6-B7-B3-A7-B8-A4-B6-A2-B1-A5 i) A1-B4-B8-A4-B6-A2-B1-A5-B3-A7-A3-B2-A8-B5-A6-B7 j) A1-B4-A3-B2-B6-A2-B1-A5-B3-A7-B8-A4-A8-B5-A6-B7 k) A1-B2-A6-B5-A8-A5-B1-A7-B6-A4-B8-A2-B3-B7-A3-B4 l) A1-B2-A6-B5-A8-B7-A3-A7-B6-A4-B8-A2-B3-A5-B1-B4Type: GrantFiled: January 3, 2017Date of Patent: September 25, 2018Assignee: Liebherr-Machines Bulle SAInventors: Christoph Henninger, Iulian Vasile, Simon Heintz, Martin Stadelmann
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Patent number: 9970508Abstract: Vibration generated by a secondary inertia couple caused by lateral pressures from pistons of a V-shaped engine is reduced. A cylinder axis of a first cylinder and a cylinder axis of a second cylinder define a splay angle in a range of about 45° to about 75°. First and second crankpins have a phase difference in a circumferential direction of a shaft center of a crankshaft in a range of about 30° to about 90°. A balancer shaft included in a single-shaft balancer mechanism rotates in a direction opposite to that in which the crankshaft rotates at a speed twice that at which the crankshaft rotates.Type: GrantFiled: September 16, 2016Date of Patent: May 15, 2018Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventor: Taketoshi Sano
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Patent number: 9683482Abstract: A turbocharger includes a turbine with a turbine wheel, a compressor with a compressor wheel and a shaft mounted in a bearing unit. The turbine wheel and the compressor wheel are disposed on the shaft. The turbine wheel is disposed in a turbine housing. The compressor wheel is disposed in a compressor housing. The turbocharger is integrated into an aperture or recess of the cylinder head of an engine and the turbine housing is formed integrally in the cylinder head.Type: GrantFiled: December 2, 2011Date of Patent: June 20, 2017Assignee: Continental Automotive GmbHInventors: Holger Fäth, Ralf Böning
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Patent number: 9103278Abstract: An engine of a straddle-type vehicle includes first, second, and third cylinders arranged, in this order, from right to left in a front view of the vehicle; first, second, and third intake pipes in communication with the first, second, and third cylinders, respectively; and first, second, and third exhaust pipes in communication with the first, second, and third cylinders, respectively. The first, second, and third exhaust pipes have different lengths and the first, second, and third intake pipes have different lengths.Type: GrantFiled: April 1, 2014Date of Patent: August 11, 2015Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yasutaka Yoshida, Masahito Kawase, Katsuyoshi Ooishi, Daisuke Hamada, Katsumi Fujimura
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Patent number: 8627744Abstract: A crankshaft for an internal combustion engine comprises at least five main journals aligned on a crankshaft axis of rotation and at least eight crankpins, each of the crankpins being disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between each of the crankpins and the respective crank arms. Each crank arm is joined to a respective main journal for transmitting torque between the crank arm and the main journal. At least four of the crankpins are spaced radially a first semi-stroke distance from the crankshaft axis of rotation, and at least four remaining crankpins are spaced radially a second semi-stroke distance from the crankshaft axis of rotation.Type: GrantFiled: March 23, 2012Date of Patent: January 14, 2014Assignee: GM Global Technology Operations LLCInventor: Alan W. Hayman
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Patent number: 8464671Abstract: The horizontally opposed center fired engine improves on the traditional design of the horizontally opposed engines and center fired engines with a better engine geometry. The present invention utilizes four pairs of opposing pistons to compress a larger volume of air-fuel mixture within four different cylinders. The four different cylinders are radially positioned around a center axle in order to achieve a perfectly symmetric engine geometry. The center axle consists of two different shafts spinning in two different directions, which could drastically reduce engine vibrations in the present invention. Engine vibrations are caused by a change in engine speed and result in a loss of energy. Due to the design, the present invention will only experience energy loss in the form of entropy and friction. Thus, the present invention can convert a higher percentage of chemical energy into mechanical energy than any other internal combustion engine.Type: GrantFiled: August 5, 2011Date of Patent: June 18, 2013Inventor: Bo Zhou
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Patent number: 8417439Abstract: A system for improving engine performance and emissions is presented. The system can lower exhaust pressure and improve engine breathing. In one example, exhaust gases are combined to reduce exhaust pressure during exhaust valve overlap.Type: GrantFiled: July 2, 2010Date of Patent: April 9, 2013Assignee: Ford Global Technologies, LLCInventors: Adam Michael Christian, Jeff Chester Lyjak, Beth Ann Dalrymple
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Publication number: 20120210958Abstract: A crankshaft for a V8 engine includes first, second, third, fourth, fifth, sixth, seventh and eighth crank pins defined on the crankshaft. The second crank pin is rotationally offset from the first crank pin, the third crank pin is rotationally offset from the first and second crank pins, the fourth crank pin is rotationally offset from the first, second and third crank pins, the fifth crank pin is rotationally offset from the first, second, third and fourth crank pins, and the sixth pin is rotationally offset from the first, second, third, fourth and fifth crank pins. The seventh crank pin is rotationally aligned with the first crank pin and the eighth crank pin is rotationally aligned with the second crank pin.Type: ApplicationFiled: February 18, 2011Publication date: August 23, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: EDWARD J. KEATING, ROBERT S. MCALPINE, AKRAM R. ZAHDEH, HATEM ZAKARIA ORBAN
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Patent number: 8156905Abstract: An internal combustion engine having a cylinder crankcase and a v-shaped cylinder configuration and having a lubricant circuit which operates according to the dry sump principle and has a lubricant reservoir, wherein the lubricant reservoir is located within the cylinder crankcase in the space between the cylinders.Type: GrantFiled: October 13, 2007Date of Patent: April 17, 2012Assignee: Audi AGInventor: Xaver Stemmer
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Patent number: 7367323Abstract: An eight-cylinder engine including fuel injection valves provided for each of the eight cylinders. A first valve drive unit for driving four of the eight fuel injection valves to open and close by energizing the four fuel injection valves and a second valve drive unit for driving the other four fuel injection valves to open and close by energizing the second-mentioned four fuel injection valves. Both of the valve drive units drive the fuel injection valves so that combustion and expansion strokes occur at equal intervals, thus allowing for a sufficient charging time for each valve drive unit. For example, the first valve drive unit energizes those fuel injection valves which are provided on a first, fourth, sixth and seventh cylinders, and the second valve drive unit energizes those fuel injection valves which are provided on a second, third, fifth, and eighth cylinders.Type: GrantFiled: March 18, 2005Date of Patent: May 6, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventor: Kouji Yoshizaki
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Patent number: 7100548Abstract: A V-type 8-cylinder four cycle internal combustion engine has a bank angle of 90 deg. and employs a double link type piston-crank mechanism for transmitting the force of each piston to a crankshaft. The double link type piston-crank mechanism comprises an upper link that has one end pivotally connected to the piston, a lower link that is rotatably supported by a crank pin of the crankshaft and has one end pivotally connected to the other end of the upper link, and a control link that has one end pivotally connected to the other end of the lower link and the other end pivotally connected to a cylinder block. Preferably, the crankshaft is of a single plane type in which all of the four throws are in a common plane.Type: GrantFiled: April 13, 2005Date of Patent: September 5, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Naoki Takahashi, Katsuya Moteki, Masayuki Hara, Hajime Miura