HYDRAULIC VALVE ACTUATION SYSTEMS AND METHODS
Hydraulic engine valve actuation systems and methods for internal combustion engines. The systems utilize a proportional valve to regulate the flow of a working fluid to and from a hydraulic actuator controlling the engine valve position. The position of the proportional valve is controlled by high...
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| creator | RAIMAO MIGUEL ANGELO TURNER CHRISTOPHER WAYNE BABBITT GUY ROBERT |
| description | Hydraulic engine valve actuation systems and methods for internal combustion engines. The systems utilize a proportional valve to regulate the flow of a working fluid to and from a hydraulic actuator controlling the engine valve position. The position of the proportional valve is controlled by high speed valves to control various engine valve parameters, including engine valve takeoff and landing velocities. Returning all valves to a known starting position between engine valve events avoids accumulation of errors in proportional valve positioning. Embodiments using spool valves for the high speed valves and the proportional valve, and spring return and hydraulic return for the engine valve, are disclosed. A specially shaped spool in the proportional valve provides enhanced control over the engine valve operation. Various further alternate embodiments are disclosed. |
| format | Patent |
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The systems utilize a proportional valve to regulate the flow of a working fluid to and from a hydraulic actuator controlling the engine valve position. The position of the proportional valve is controlled by high speed valves to control various engine valve parameters, including engine valve takeoff and landing velocities. Returning all valves to a known starting position between engine valve events avoids accumulation of errors in proportional valve positioning. Embodiments using spool valves for the high speed valves and the proportional valve, and spring return and hydraulic return for the engine valve, are disclosed. A specially shaped spool in the proportional valve provides enhanced control over the engine valve operation. Various further alternate embodiments are disclosed.</description><edition>7</edition><language>eng</language><subject>BLASTING ; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ; ENGINE PLANTS IN GENERAL ; FLUID-PRESSURE ACTUATORS ; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS ; HEATING ; HYDRAULICS OR PNEUMATICS IN GENERAL ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; STEAM ENGINES ; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL ; WEAPONS</subject><creationdate>2002</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021031&DB=EPODOC&CC=US&NR=2002157623A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021031&DB=EPODOC&CC=US&NR=2002157623A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>RAIMAO MIGUEL ANGELO</creatorcontrib><creatorcontrib>TURNER CHRISTOPHER WAYNE</creatorcontrib><creatorcontrib>BABBITT GUY ROBERT</creatorcontrib><title>HYDRAULIC VALVE ACTUATION SYSTEMS AND METHODS</title><description>Hydraulic engine valve actuation systems and methods for internal combustion engines. The systems utilize a proportional valve to regulate the flow of a working fluid to and from a hydraulic actuator controlling the engine valve position. The position of the proportional valve is controlled by high speed valves to control various engine valve parameters, including engine valve takeoff and landing velocities. Returning all valves to a known starting position between engine valve events avoids accumulation of errors in proportional valve positioning. Embodiments using spool valves for the high speed valves and the proportional valve, and spring return and hydraulic return for the engine valve, are disclosed. A specially shaped spool in the proportional valve provides enhanced control over the engine valve operation. Various further alternate embodiments are disclosed.</description><subject>BLASTING</subject><subject>CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES</subject><subject>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>FLUID-PRESSURE ACTUATORS</subject><subject>FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS</subject><subject>HEATING</subject><subject>HYDRAULICS OR PNEUMATICS IN GENERAL</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>STEAM ENGINES</subject><subject>SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND1iHQJcgz18XRWCHP0CXNVcHQOCXUM8fT3UwiODA5x9Q1WcPRzUfB1DfHwdwnmYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXxocFGBgZGhqbmZkbGjobGxKkCAGgqJoo</recordid><startdate>20021031</startdate><enddate>20021031</enddate><creator>RAIMAO MIGUEL ANGELO</creator><creator>TURNER CHRISTOPHER WAYNE</creator><creator>BABBITT GUY ROBERT</creator><scope>EVB</scope></search><sort><creationdate>20021031</creationdate><title>HYDRAULIC VALVE ACTUATION SYSTEMS AND METHODS</title><author>RAIMAO MIGUEL ANGELO ; TURNER CHRISTOPHER WAYNE ; BABBITT GUY ROBERT</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2002157623A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2002</creationdate><topic>BLASTING</topic><topic>CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES</topic><topic>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>FLUID-PRESSURE ACTUATORS</topic><topic>FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS</topic><topic>HEATING</topic><topic>HYDRAULICS OR PNEUMATICS IN GENERAL</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>STEAM ENGINES</topic><topic>SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>RAIMAO MIGUEL ANGELO</creatorcontrib><creatorcontrib>TURNER CHRISTOPHER WAYNE</creatorcontrib><creatorcontrib>BABBITT GUY ROBERT</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RAIMAO MIGUEL ANGELO</au><au>TURNER CHRISTOPHER WAYNE</au><au>BABBITT GUY ROBERT</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRAULIC VALVE ACTUATION SYSTEMS AND METHODS</title><date>2002-10-31</date><risdate>2002</risdate><abstract>Hydraulic engine valve actuation systems and methods for internal combustion engines. The systems utilize a proportional valve to regulate the flow of a working fluid to and from a hydraulic actuator controlling the engine valve position. The position of the proportional valve is controlled by high speed valves to control various engine valve parameters, including engine valve takeoff and landing velocities. Returning all valves to a known starting position between engine valve events avoids accumulation of errors in proportional valve positioning. Embodiments using spool valves for the high speed valves and the proportional valve, and spring return and hydraulic return for the engine valve, are disclosed. A specially shaped spool in the proportional valve provides enhanced control over the engine valve operation. Various further alternate embodiments are disclosed.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ENGINE PLANTS IN GENERAL FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS |
| title | HYDRAULIC VALVE ACTUATION SYSTEMS AND METHODS |
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