ENGINE UNIT AND STRADDLED VEHICLE
An engine unit (EU) having its early-start ability further improved with suppression of deterioration in mountability to vehicle (1). The engine unit (EU) includes a four-stroke engine body (10), a starter motor (20), a plurality of detection object parts (38), a rotor position detection device (50)...
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| creator | Takahiro NISHIKAWA Haruyoshi HINO |
| description | An engine unit (EU) having its early-start ability further improved with suppression of deterioration in mountability to vehicle (1). The engine unit (EU) includes a four-stroke engine body (10), a starter motor (20), a plurality of detection object parts (38), a rotor position detection device (50) having a detection-purpose winding (51), and an inverter (61) having a plurality of switching parts (611-616). A control device (CT): shifts from a start control mode for performing on/off-operation of the plurality of switching parts (611-616) at predefined timings to start forward rotation of the crankshaft (15), to an acceleration control mode for performing on/off-operation of the plurality of switching parts (611-616) at timings based on an electrical signal flowing in the detection-purpose winding (51) to accelerate forward rotation of the crankshaft (15); and in time periods during which the start control mode and the acceleration control mode are performed, causes rotation of the rotor (30) to follow a variation in a current flowing in the multi-phase stator windings (W) by controlling on/off-operation of the plurality of switching parts (611-616) based on both a timing of a variation corresponding to the forward end (38a) of the detection object part (38) and a timing of a variation corresponding to the rearward end (38b) of the detection object part (38) among variations in the electrical signal flowing in the detection-purpose winding (51). |
| format | Patent |
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The engine unit (EU) includes a four-stroke engine body (10), a starter motor (20), a plurality of detection object parts (38), a rotor position detection device (50) having a detection-purpose winding (51), and an inverter (61) having a plurality of switching parts (611-616). A control device (CT): shifts from a start control mode for performing on/off-operation of the plurality of switching parts (611-616) at predefined timings to start forward rotation of the crankshaft (15), to an acceleration control mode for performing on/off-operation of the plurality of switching parts (611-616) at timings based on an electrical signal flowing in the detection-purpose winding (51) to accelerate forward rotation of the crankshaft (15); and in time periods during which the start control mode and the acceleration control mode are performed, causes rotation of the rotor (30) to follow a variation in a current flowing in the multi-phase stator windings (W) by controlling on/off-operation of the plurality of switching parts (611-616) based on both a timing of a variation corresponding to the forward end (38a) of the detection object part (38) and a timing of a variation corresponding to the rearward end (38b) of the detection object part (38) among variations in the electrical signal flowing in the detection-purpose winding (51).</description><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES ; LIGHTING ; MECHANICAL ENGINEERING ; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR ; STARTING OF COMBUSTION ENGINES ; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES ; WEAPONS</subject><creationdate>2021</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=20210722&DB=EPODOC&CC=MY&NR=186416A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210722&DB=EPODOC&CC=MY&NR=186416A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Takahiro NISHIKAWA</creatorcontrib><creatorcontrib>Haruyoshi HINO</creatorcontrib><title>ENGINE UNIT AND STRADDLED VEHICLE</title><description>An engine unit (EU) having its early-start ability further improved with suppression of deterioration in mountability to vehicle (1). The engine unit (EU) includes a four-stroke engine body (10), a starter motor (20), a plurality of detection object parts (38), a rotor position detection device (50) having a detection-purpose winding (51), and an inverter (61) having a plurality of switching parts (611-616). A control device (CT): shifts from a start control mode for performing on/off-operation of the plurality of switching parts (611-616) at predefined timings to start forward rotation of the crankshaft (15), to an acceleration control mode for performing on/off-operation of the plurality of switching parts (611-616) at timings based on an electrical signal flowing in the detection-purpose winding (51) to accelerate forward rotation of the crankshaft (15); and in time periods during which the start control mode and the acceleration control mode are performed, causes rotation of the rotor (30) to follow a variation in a current flowing in the multi-phase stator windings (W) by controlling on/off-operation of the plurality of switching parts (611-616) based on both a timing of a variation corresponding to the forward end (38a) of the detection object part (38) and a timing of a variation corresponding to the rearward end (38b) of the detection object part (38) among variations in the electrical signal flowing in the detection-purpose winding (51).</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR</subject><subject>STARTING OF COMBUSTION ENGINES</subject><subject>TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFB09XP39HNVCPXzDFFw9HNRCA4JcnRx8XF1UQhz9fB09nHlYWBNS8wpTuWF0twMcm6uIc4euqkF-fGpxQWJyal5qSXxvpGGFmYmhmaOxgQVAABA7SDg</recordid><startdate>20210722</startdate><enddate>20210722</enddate><creator>Takahiro NISHIKAWA</creator><creator>Haruyoshi HINO</creator><scope>EVB</scope></search><sort><creationdate>20210722</creationdate><title>ENGINE UNIT AND STRADDLED VEHICLE</title><author>Takahiro NISHIKAWA ; Haruyoshi HINO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_MY186416A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2021</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR</topic><topic>STARTING OF COMBUSTION ENGINES</topic><topic>TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Takahiro NISHIKAWA</creatorcontrib><creatorcontrib>Haruyoshi HINO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Takahiro NISHIKAWA</au><au>Haruyoshi HINO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ENGINE UNIT AND STRADDLED VEHICLE</title><date>2021-07-22</date><risdate>2021</risdate><abstract>An engine unit (EU) having its early-start ability further improved with suppression of deterioration in mountability to vehicle (1). The engine unit (EU) includes a four-stroke engine body (10), a starter motor (20), a plurality of detection object parts (38), a rotor position detection device (50) having a detection-purpose winding (51), and an inverter (61) having a plurality of switching parts (611-616). A control device (CT): shifts from a start control mode for performing on/off-operation of the plurality of switching parts (611-616) at predefined timings to start forward rotation of the crankshaft (15), to an acceleration control mode for performing on/off-operation of the plurality of switching parts (611-616) at timings based on an electrical signal flowing in the detection-purpose winding (51) to accelerate forward rotation of the crankshaft (15); and in time periods during which the start control mode and the acceleration control mode are performed, causes rotation of the rotor (30) to follow a variation in a current flowing in the multi-phase stator windings (W) by controlling on/off-operation of the plurality of switching parts (611-616) based on both a timing of a variation corresponding to the forward end (38a) of the detection object part (38) and a timing of a variation corresponding to the rearward end (38b) of the detection object part (38) among variations in the electrical signal flowing in the detection-purpose winding (51).</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES LIGHTING MECHANICAL ENGINEERING STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS |
| title | ENGINE UNIT AND STRADDLED VEHICLE |
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