FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE
PURPOSE:To prevent an unstable idling state and an engine stall from occurring, by having control pressure to be led into a pressure regulator when output of an air-fuel ratio sensor is selected from lean to rich at the time of high temperature starting, duty-controlled by a negative pressure contro...
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| creator | MIYAMARU MASASHI |
| description | PURPOSE:To prevent an unstable idling state and an engine stall from occurring, by having control pressure to be led into a pressure regulator when output of an air-fuel ratio sensor is selected from lean to rich at the time of high temperature starting, duty-controlled by a negative pressure control valve. CONSTITUTION:In the case where vapor is generated in a fuel system at the time of high temperature starting, if an output signal out of an oxygen sensor 16 is a lean signal, a duty ratio of a negative pressure control valve VSV15 is set to 100% by a command out of a control circuit 11 and control pressure to be led into a diaphragm chamber of a pressure regulator 12 is set to atmo spheric pressure. And, when output of the oxygen sensor 16 is selected from a lean signal to a rich signal, from that point of time, the duty ratio of the VSV15 is made so as to be lowered from the 100% by degrees, and when then the specified time elapses, the duty ratio is set to 0%. With this constitution, fuel pressure is gradually lowered from the high pressure side to the low pres sure side so that a large variation in the air-fuel ratio is avoided. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPS6287638A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPS6287638A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPS6287638A3</originalsourceid><addsrcrecordid>eNrjZDB3C3X1UQgIcg0ODg1yVXD29wsJ8vfxcQ1ScPMPUvD0C3EN8nP0AYr7OoUGh3j6-ym4-rl7-rnyMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JJ4r4BgMyMLczNjC0djIpQAACFOKIo</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE</title><source>esp@cenet</source><creator>MIYAMARU MASASHI</creator><creatorcontrib>MIYAMARU MASASHI</creatorcontrib><description>PURPOSE:To prevent an unstable idling state and an engine stall from occurring, by having control pressure to be led into a pressure regulator when output of an air-fuel ratio sensor is selected from lean to rich at the time of high temperature starting, duty-controlled by a negative pressure control valve. CONSTITUTION:In the case where vapor is generated in a fuel system at the time of high temperature starting, if an output signal out of an oxygen sensor 16 is a lean signal, a duty ratio of a negative pressure control valve VSV15 is set to 100% by a command out of a control circuit 11 and control pressure to be led into a diaphragm chamber of a pressure regulator 12 is set to atmo spheric pressure. And, when output of the oxygen sensor 16 is selected from a lean signal to a rich signal, from that point of time, the duty ratio of the VSV15 is made so as to be lowered from the 100% by degrees, and when then the specified time elapses, the duty ratio is set to 0%. With this constitution, fuel pressure is gradually lowered from the high pressure side to the low pres sure side so that a large variation in the air-fuel ratio is avoided.</description><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; CONTROLLING 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>1987</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=19870422&DB=EPODOC&CC=JP&NR=S6287638A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19870422&DB=EPODOC&CC=JP&NR=S6287638A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MIYAMARU MASASHI</creatorcontrib><title>FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE</title><description>PURPOSE:To prevent an unstable idling state and an engine stall from occurring, by having control pressure to be led into a pressure regulator when output of an air-fuel ratio sensor is selected from lean to rich at the time of high temperature starting, duty-controlled by a negative pressure control valve. CONSTITUTION:In the case where vapor is generated in a fuel system at the time of high temperature starting, if an output signal out of an oxygen sensor 16 is a lean signal, a duty ratio of a negative pressure control valve VSV15 is set to 100% by a command out of a control circuit 11 and control pressure to be led into a diaphragm chamber of a pressure regulator 12 is set to atmo spheric pressure. And, when output of the oxygen sensor 16 is selected from a lean signal to a rich signal, from that point of time, the duty ratio of the VSV15 is made so as to be lowered from the 100% by degrees, and when then the specified time elapses, the duty ratio is set to 0%. With this constitution, fuel pressure is gradually lowered from the high pressure side to the low pres sure side so that a large variation in the air-fuel ratio is avoided.</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>CONTROLLING 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>1987</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDB3C3X1UQgIcg0ODg1yVXD29wsJ8vfxcQ1ScPMPUvD0C3EN8nP0AYr7OoUGh3j6-ym4-rl7-rnyMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JJ4r4BgMyMLczNjC0djIpQAACFOKIo</recordid><startdate>19870422</startdate><enddate>19870422</enddate><creator>MIYAMARU MASASHI</creator><scope>EVB</scope></search><sort><creationdate>19870422</creationdate><title>FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE</title><author>MIYAMARU MASASHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS6287638A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1987</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>CONTROLLING 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>MIYAMARU MASASHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MIYAMARU MASASHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE</title><date>1987-04-22</date><risdate>1987</risdate><abstract>PURPOSE:To prevent an unstable idling state and an engine stall from occurring, by having control pressure to be led into a pressure regulator when output of an air-fuel ratio sensor is selected from lean to rich at the time of high temperature starting, duty-controlled by a negative pressure control valve. CONSTITUTION:In the case where vapor is generated in a fuel system at the time of high temperature starting, if an output signal out of an oxygen sensor 16 is a lean signal, a duty ratio of a negative pressure control valve VSV15 is set to 100% by a command out of a control circuit 11 and control pressure to be led into a diaphragm chamber of a pressure regulator 12 is set to atmo spheric pressure. And, when output of the oxygen sensor 16 is selected from a lean signal to a rich signal, from that point of time, the duty ratio of the VSV15 is made so as to be lowered from the 100% by degrees, and when then the specified time elapses, the duty ratio is set to 0%. With this constitution, fuel pressure is gradually lowered from the high pressure side to the low pres sure side so that a large variation in the air-fuel ratio is avoided.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING COMBUSTION ENGINES CONTROLLING 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 | FUEL PRESSURE CONTROLLER FOR INTERNAL COMBUSTION ENGINE |
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