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Patent Agency Ranking
公开(公告)号：US20180230864A1
公开(公告)日：2018-08-16
申请号：US15429219
申请日：2017-02-10
Applicant: GM Global Technology Operations LLC
Inventor： Christopher E. Whitney , David N. Hayden , Nicola Pisu , Stephen P. Levijoki
CPC classification number: F01L1/344 , F01L1/047 , F01L1/34 , F01L1/46 , F01L2013/116 , F01L2201/00 , F01L2800/00 , F01L2800/05 , F01L2820/044 , F02D13/0219 , F02D13/0261 , F02D41/0062 , F02D41/0072 , F02D41/021 , F02D41/04 , F02D41/1406 , F02D41/2422 , F02D2041/001 , F02D2041/1412 , F02D2200/021 , F02D2200/0402 , F02D2200/0418 , F02D2200/1002 , F02D2200/101 , F02D2200/602 , F02D2200/70 , Y02T10/18
Abstract: A method of phasing the opening and closing of internal combustion engine intake and exhaust valves relative to the rotation of the crankshaft is based upon changes in engine speed, engine load and ambient relative humidity. During certain conditions of higher humidity, in order to maintain good combustion stability and thus overall engine operation, it is necessary to reduce intake and exhaust valve overlap by adjusting the phase of the intake and exhaust camshafts. This is achieved by utilizing a set of cam position reference values and constraints based upon engine speed, engine load and humidity that are contained in lookup tables that adjust and limit cam position and valve overlap. Generally speaking, in order to maintain optimum engine performance, intake and exhaust valve overlap is reduced with higher ambient humidity and vice versa.
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公开(公告)号：US20180216563A1
公开(公告)日：2018-08-02
申请号：US15421547
申请日：2017-02-01
Applicant: GM Global Technology Operations LLC
CPC classification number: F02D41/2464 , F02B37/183 , F02D11/105 , F02D37/02 , F02D41/0077 , F02D41/1401 , F02D41/1406 , F02D41/2422 , F02D43/04 , F02D2041/001 , F02D2041/1432 , F02D2041/1433 , F02D2041/1434 , F02D2200/1006 , F02D2250/18 , F02P5/045 , F02P5/1504 , F02P5/1506 , F02P5/1516 , H01T13/00 , Y02T10/144
Abstract: A method to determine reference actuator positions for a gasoline engine, includes entering a base torque request, a known spark advance, a known CAM position and a known exhaust gas recirculation (EGR) valve position into an inverse torque model to generate a first iteration desired air per cylinder (APC) value. The first iteration desired APC value is passed through a deadband filter to produce a filtered first iteration desired APC signal. A Predicted As Cal (PAC) spark advance is calculated for the filtered first iteration desired APC value. The PAC spark advance and the base torque request are modified, and data from a first lookup table is entered to generate a second iteration desired APC value.
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公开(公告)号：US09932909B1
公开(公告)日：2018-04-03
申请号：US15439140
申请日：2017-02-22
Applicant: GM Global Technology Operations LLC
Inventor： Stephen P. Levijoki , David N. Hayden , Pulasti Bandara , Christopher E. Whitney
CPC classification number: F02D13/0219 , B60H1/00764 , B60H1/04 , F02D9/02 , F02D41/0007 , F02D41/0077 , F02D41/2422 , F02D2041/001 , F02D2200/1002 , F02D2200/101 , F02D2200/60 , F02D2250/18
Abstract: A method of controlling intake and exhaust cam phase in an internal combustion engine for optimal HVAC performance in a motor vehicle includes requesting a cabin heating value, sensing an engine speed and an engine load of the internal combustion engine, utilizing the cabin heating value, the engine speed and the engine load in one or more lookup tables to determine intake phaser constraint values and exhaust phaser constraint values for cabin heating, and transitioning the intake phaser constraint values and the exhaust phaser constraint values for cabin heating to intake phaser constraint values and exhaust phaser constraint values based on one or more lookup tables for normal operation without a cabin heating request.
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公开(公告)号：US09845712B2
公开(公告)日：2017-12-19
申请号：US15071578
申请日：2016-03-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David N. Hayden
CPC classification number: F01L13/0005 , F01L1/047 , F01L1/053 , F01L13/0036 , F01L2013/001 , F01L2013/0052 , F01L2013/10
Abstract: A cam system for operating a first engine valve and a second engine valve includes translatable first and a second sliding lobe packs. The first sliding lobe pack operates the first engine valve with one of a high lift lobe, a low lift lobe, and a zero lift lobe. The second sliding lobe operates the second engine valve with one of a high lift lobe or one of two low lift lobes. A shift barrel has a first groove configured to translate the first and a second sliding lobe packs in a first direction, and a second groove configured to translate the first and a second sliding lobe packs in a second direction, opposite the first. A shift actuator has a first pin, a second pin, and a third pin, each selectively actuatable to engage the first groove or the second groove.
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公开(公告)号：US20170268391A1
公开(公告)日：2017-09-21
申请号：US15071578
申请日：2016-03-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David N. Hayden
CPC classification number: F01L13/0005 , F01L1/047 , F01L1/053 , F01L13/0036 , F01L2013/001 , F01L2013/0052 , F01L2013/10
Abstract: A cam system for operating a first engine valve and a second engine valve includes translatable first and a second sliding lobe packs. The first sliding lobe pack operates the first engine valve with one of a high lift lobe, a low lift lobe, and a zero lift lobe. The second sliding lobe operates the second engine valve with one of a high lift lobe or one of two low lift lobes. A shift barrel has a first groove configured to translate the first and a second sliding lobe packs in a first direction, and a second groove configured to translate the first and a second sliding lobe packs in a second direction, opposite the first. A shift actuator has a first pin, a second pin, and a third pin, each selectively actuatable to engage the first groove or the second groove.
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