Hydraulic change speed system for a working vehicle
A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a contr...
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| creator | FUKUMOTO TOSHIYA HATTORI AKIO MACHIDA SATOSHI OKANO AKIHISA |
| description | A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a controller for controlling the valve unit, and a timer for measuring a shifting time of the gear type change speed device. The controller starts disengaging the hydraulic clutch by depressurizing the hydraulic clutch upon start of operation of the actuator, and starts engaging the hydraulic clutch by pressurizing the hydraulic clutch upon finish of operation of the actuator. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured. |
| format | Patent |
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The controller starts disengaging the hydraulic clutch by depressurizing the hydraulic clutch upon start of operation of the actuator, and starts engaging the hydraulic clutch by pressurizing the hydraulic clutch upon finish of operation of the actuator. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured.</description><edition>7</edition><language>eng</language><subject>BLASTING ; BRAKES ; CLUTCHES ; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION ; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ; COUPLINGS FOR TRANSMITTING ROTATION ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; HEATING ; INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT ; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ; TECHNICAL SUBJECTS COVERED BY FORMER USPC ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; VEHICLES 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=20020829&DB=EPODOC&CC=US&NR=2002119865A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020829&DB=EPODOC&CC=US&NR=2002119865A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUKUMOTO TOSHIYA</creatorcontrib><creatorcontrib>HATTORI AKIO</creatorcontrib><creatorcontrib>MACHIDA SATOSHI</creatorcontrib><creatorcontrib>OKANO AKIHISA</creatorcontrib><title>Hydraulic change speed system for a working vehicle</title><description>A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a controller for controlling the valve unit, and a timer for measuring a shifting time of the gear type change speed device. The controller starts disengaging the hydraulic clutch by depressurizing the hydraulic clutch upon start of operation of the actuator, and starts engaging the hydraulic clutch by pressurizing the hydraulic clutch upon finish of operation of the actuator. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured.</description><subject>BLASTING</subject><subject>BRAKES</subject><subject>CLUTCHES</subject><subject>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</subject><subject>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</subject><subject>COUPLINGS FOR TRANSMITTING ROTATION</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GEARING</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</subject><subject>HEATING</subject><subject>INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</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>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD2qEwpSizNyUxWSM5IzEtPVSguSE1NUSiuLC5JzVVIyy9SSFQozy_KzsxLVyhLzchMzknlYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXxocFGBgZGhoaWFmamjobGxKkCAKBrLTw</recordid><startdate>20020829</startdate><enddate>20020829</enddate><creator>FUKUMOTO TOSHIYA</creator><creator>HATTORI AKIO</creator><creator>MACHIDA SATOSHI</creator><creator>OKANO AKIHISA</creator><scope>EVB</scope></search><sort><creationdate>20020829</creationdate><title>Hydraulic change speed system for a working vehicle</title><author>FUKUMOTO TOSHIYA ; HATTORI AKIO ; MACHIDA SATOSHI ; OKANO AKIHISA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2002119865A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2002</creationdate><topic>BLASTING</topic><topic>BRAKES</topic><topic>CLUTCHES</topic><topic>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</topic><topic>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</topic><topic>COUPLINGS FOR TRANSMITTING ROTATION</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GEARING</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</topic><topic>HEATING</topic><topic>INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>VEHICLES IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>FUKUMOTO TOSHIYA</creatorcontrib><creatorcontrib>HATTORI AKIO</creatorcontrib><creatorcontrib>MACHIDA SATOSHI</creatorcontrib><creatorcontrib>OKANO AKIHISA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FUKUMOTO TOSHIYA</au><au>HATTORI AKIO</au><au>MACHIDA SATOSHI</au><au>OKANO AKIHISA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Hydraulic change speed system for a working vehicle</title><date>2002-08-29</date><risdate>2002</risdate><abstract>A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a controller for controlling the valve unit, and a timer for measuring a shifting time of the gear type change speed device. The controller starts disengaging the hydraulic clutch by depressurizing the hydraulic clutch upon start of operation of the actuator, and starts engaging the hydraulic clutch by pressurizing the hydraulic clutch upon finish of operation of the actuator. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING BRAKES CLUTCHES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS |
| title | Hydraulic change speed system for a working vehicle |
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