Method and apparatus to control hydraulic pressure in an electrically variable transmission
A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydraulic clutch pressure in an electric...
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| creator | HSIEH TUNG-MING HUBBARD GREGORY A FOSTER MICHAEL D |
| description | A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydraulic clutch pressure in an electrically variable transmission equipped with at least one clutch. This comprises monitoring magnitude of slippage of the clutches and controlling hydraulic boost pressure based upon the magnitude of clutch slippage. Controlling hydraulic boost pressure based upon the magnitude of clutch slippage comprises monitoring operator inputs, determining a requested operator torque command, and determining a required main boost pressure. The main boost pressure is based upon the requested operator torque command, the monitored operator inputs, parameters of the EVT and clutches. Commanded main boost pressure is then determined based upon the determined required main boost pressure. |
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Included is a method to regulate hydraulic clutch pressure in an electrically variable transmission equipped with at least one clutch. This comprises monitoring magnitude of slippage of the clutches and controlling hydraulic boost pressure based upon the magnitude of clutch slippage. Controlling hydraulic boost pressure based upon the magnitude of clutch slippage comprises monitoring operator inputs, determining a requested operator torque command, and determining a required main boost pressure. The main boost pressure is based upon the requested operator torque command, the monitored operator inputs, parameters of the EVT and clutches. Commanded main boost pressure is then determined based upon the determined required main boost pressure.</description><language>eng</language><subject>ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES ; AUXILIARY DRIVES FOR VEHICLES ; BLASTING ; BRAKES ; CALCULATING ; CLUTCHES ; COMPUTING ; CONTROLLING ; COUNTING ; COUPLINGS FOR TRANSMITTING ROTATION ; ELECTRIC DIGITAL DATA PROCESSING ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; PHYSICS ; REGULATING ; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; VEHICLES IN GENERAL ; WEAPONS</subject><creationdate>2008</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=20080506&DB=EPODOC&CC=US&NR=7369930B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080506&DB=EPODOC&CC=US&NR=7369930B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HSIEH TUNG-MING</creatorcontrib><creatorcontrib>HUBBARD GREGORY A</creatorcontrib><creatorcontrib>FOSTER MICHAEL D</creatorcontrib><title>Method and apparatus to control hydraulic pressure in an electrically variable transmission</title><description>A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydraulic clutch pressure in an electrically variable transmission equipped with at least one clutch. This comprises monitoring magnitude of slippage of the clutches and controlling hydraulic boost pressure based upon the magnitude of clutch slippage. Controlling hydraulic boost pressure based upon the magnitude of clutch slippage comprises monitoring operator inputs, determining a requested operator torque command, and determining a required main boost pressure. The main boost pressure is based upon the requested operator torque command, the monitored operator inputs, parameters of the EVT and clutches. Commanded main boost pressure is then determined based upon the determined required main boost pressure.</description><subject>ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES</subject><subject>ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES</subject><subject>ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES</subject><subject>AUXILIARY DRIVES FOR VEHICLES</subject><subject>BLASTING</subject><subject>BRAKES</subject><subject>CALCULATING</subject><subject>CLUTCHES</subject><subject>COMPUTING</subject><subject>CONTROLLING</subject><subject>COUNTING</subject><subject>COUPLINGS FOR TRANSMITTING ROTATION</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GEARING</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>INSTRUMENTATION OR DASHBOARDS FOR VEHICLES</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>REGULATING</subject><subject>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>VEHICLES IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyjEKAjEQQNE0FqLeYS4giAFlWxfFxkqtLJYxO7KBMQkzE2Fv7xYewOLzmzd3jwvZkHvANFUKClpVsAwhJ5PMMIy9YOUYoAipViGIaeJATMEkBmQe4YMS8ckEJpj0HVVjTks3eyErrX5fODgdb-15TSV3pAUDJbLuft37XdP4zWHr_yBfVGc8GA</recordid><startdate>20080506</startdate><enddate>20080506</enddate><creator>HSIEH TUNG-MING</creator><creator>HUBBARD GREGORY A</creator><creator>FOSTER MICHAEL D</creator><scope>EVB</scope></search><sort><creationdate>20080506</creationdate><title>Method and apparatus to control hydraulic pressure in an electrically variable transmission</title><author>HSIEH TUNG-MING ; HUBBARD GREGORY A ; FOSTER MICHAEL D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US7369930B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2008</creationdate><topic>ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES</topic><topic>ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES</topic><topic>ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES</topic><topic>AUXILIARY DRIVES FOR VEHICLES</topic><topic>BLASTING</topic><topic>BRAKES</topic><topic>CALCULATING</topic><topic>CLUTCHES</topic><topic>COMPUTING</topic><topic>CONTROLLING</topic><topic>COUNTING</topic><topic>COUPLINGS FOR TRANSMITTING ROTATION</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GEARING</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>INSTRUMENTATION OR DASHBOARDS FOR VEHICLES</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>REGULATING</topic><topic>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>VEHICLES IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>HSIEH TUNG-MING</creatorcontrib><creatorcontrib>HUBBARD GREGORY A</creatorcontrib><creatorcontrib>FOSTER MICHAEL D</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HSIEH TUNG-MING</au><au>HUBBARD GREGORY A</au><au>FOSTER MICHAEL D</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method and apparatus to control hydraulic pressure in an electrically variable transmission</title><date>2008-05-06</date><risdate>2008</risdate><abstract>A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydraulic clutch pressure in an electrically variable transmission equipped with at least one clutch. This comprises monitoring magnitude of slippage of the clutches and controlling hydraulic boost pressure based upon the magnitude of clutch slippage. Controlling hydraulic boost pressure based upon the magnitude of clutch slippage comprises monitoring operator inputs, determining a requested operator torque command, and determining a required main boost pressure. The main boost pressure is based upon the requested operator torque command, the monitored operator inputs, parameters of the EVT and clutches. Commanded main boost pressure is then determined based upon the determined required main boost pressure.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING BRAKES CALCULATING CLUTCHES COMPUTING CONTROLLING COUNTING COUPLINGS FOR TRANSMITTING ROTATION ELECTRIC DIGITAL DATA PROCESSING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS |
| title | Method and apparatus to control hydraulic pressure in an electrically variable transmission |
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