Low evaporative emission fuel system depressurization via solenoid valve
A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and...
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| creator | VINT MATTI K KEMPFER STEPHEN T PURSIFULL ROSS D YU DEQUAN STROIA KATHLEEN H |
| description | A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US7066152B2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US7066152B2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US7066152B23</originalsourceid><addsrcrecordid>eNqNyjEKwkAQRuFtLES9w1xA0IixV5QUdmodBvMHBjY7y85mRU9vCg9g9Yr3zV1z1RehcNTEWQoIg5iJBupHeLK3ZQzUISaYjUk-k5pmESZTj6DSUWFfsHSznr1h9evC0eV8PzVrRG1hkZ8IyO3jdtjU9XZfHavdH-QLw3Y1HQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Low evaporative emission fuel system depressurization via solenoid valve</title><source>esp@cenet</source><creator>VINT MATTI K ; KEMPFER STEPHEN T ; PURSIFULL ROSS D ; YU DEQUAN ; STROIA KATHLEEN H</creator><creatorcontrib>VINT MATTI K ; KEMPFER STEPHEN T ; PURSIFULL ROSS D ; YU DEQUAN ; STROIA KATHLEEN H</creatorcontrib><description>A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.</description><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF ; WEAPONS</subject><creationdate>2006</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=20060627&DB=EPODOC&CC=US&NR=7066152B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20060627&DB=EPODOC&CC=US&NR=7066152B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VINT MATTI K</creatorcontrib><creatorcontrib>KEMPFER STEPHEN T</creatorcontrib><creatorcontrib>PURSIFULL ROSS D</creatorcontrib><creatorcontrib>YU DEQUAN</creatorcontrib><creatorcontrib>STROIA KATHLEEN H</creatorcontrib><title>Low evaporative emission fuel system depressurization via solenoid valve</title><description>A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyjEKwkAQRuFtLES9w1xA0IixV5QUdmodBvMHBjY7y85mRU9vCg9g9Yr3zV1z1RehcNTEWQoIg5iJBupHeLK3ZQzUISaYjUk-k5pmESZTj6DSUWFfsHSznr1h9evC0eV8PzVrRG1hkZ8IyO3jdtjU9XZfHavdH-QLw3Y1HQ</recordid><startdate>20060627</startdate><enddate>20060627</enddate><creator>VINT MATTI K</creator><creator>KEMPFER STEPHEN T</creator><creator>PURSIFULL ROSS D</creator><creator>YU DEQUAN</creator><creator>STROIA KATHLEEN H</creator><scope>EVB</scope></search><sort><creationdate>20060627</creationdate><title>Low evaporative emission fuel system depressurization via solenoid valve</title><author>VINT MATTI K ; KEMPFER STEPHEN T ; PURSIFULL ROSS D ; YU DEQUAN ; STROIA KATHLEEN H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US7066152B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2006</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>VINT MATTI K</creatorcontrib><creatorcontrib>KEMPFER STEPHEN T</creatorcontrib><creatorcontrib>PURSIFULL ROSS D</creatorcontrib><creatorcontrib>YU DEQUAN</creatorcontrib><creatorcontrib>STROIA KATHLEEN H</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VINT MATTI K</au><au>KEMPFER STEPHEN T</au><au>PURSIFULL ROSS D</au><au>YU DEQUAN</au><au>STROIA KATHLEEN H</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Low evaporative emission fuel system depressurization via solenoid valve</title><date>2006-06-27</date><risdate>2006</risdate><abstract>A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS |
| title | Low evaporative emission fuel system depressurization via solenoid valve |
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