Lean operating hybrid gasoline engine
An engine control unit (400, Fig 5) for a full hybrid engine 100 with an internal combustion engine 110 and an electric motor 120 is configured to operate the internal combustion engine in a lean-burn mode, to determine a current load level of the full hybrid engine and to compare the current load l...
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| creator | Lyn McWilliam Bryn Littlefair Thomas Richard Johnson John Geddes |
| description | An engine control unit (400, Fig 5) for a full hybrid engine 100 with an internal combustion engine 110 and an electric motor 120 is configured to operate the internal combustion engine in a lean-burn mode, to determine a current load level of the full hybrid engine and to compare the current load level to a lean-burn load threshold (210, Fig 3). The lean-burn load threshold defines a load level below which stable operation of the internal combustion engine in the lean-burn mode is impossible and/or undesirable. If the current load level of the full hybrid engine is below the lean-burn load threshold, the internal combustion engine is decoupled from the drivetrain and the full hybrid engine is operated in an electric mode. The engine control unit preferably determines a current RPM of the full hybrid engine and to determine the lean-burn load threshold in dependence on the current RPM, or a current NOx concentration in an exhaust stream of the internal combustion engine, while the internal combustion engine is operating in the lean-burn mode. An internal combustion engine, a full hybrid engine, a powertrain for a vehicle, a vehicle and method of operation are also claimed. |
| format | Patent |
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The lean-burn load threshold defines a load level below which stable operation of the internal combustion engine in the lean-burn mode is impossible and/or undesirable. If the current load level of the full hybrid engine is below the lean-burn load threshold, the internal combustion engine is decoupled from the drivetrain and the full hybrid engine is operated in an electric mode. The engine control unit preferably determines a current RPM of the full hybrid engine and to determine the lean-burn load threshold in dependence on the current RPM, or a current NOx concentration in an exhaust stream of the internal combustion engine, while the internal combustion engine is operating in the lean-burn mode. An internal combustion engine, a full hybrid engine, a powertrain for a vehicle, a vehicle and method of operation are also claimed.</description><language>eng</language><subject>BLASTING ; COMBUSTION ENGINES ; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION ; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ; CONTROLLING COMBUSTION ENGINES ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT ; TRANSPORTING ; VEHICLES IN GENERAL ; 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=20211006&DB=EPODOC&CC=GB&NR=2593761A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211006&DB=EPODOC&CC=GB&NR=2593761A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Lyn McWilliam</creatorcontrib><creatorcontrib>Bryn Littlefair</creatorcontrib><creatorcontrib>Thomas Richard Johnson</creatorcontrib><creatorcontrib>John Geddes</creatorcontrib><title>Lean operating hybrid gasoline engine</title><description>An engine control unit (400, Fig 5) for a full hybrid engine 100 with an internal combustion engine 110 and an electric motor 120 is configured to operate the internal combustion engine in a lean-burn mode, to determine a current load level of the full hybrid engine and to compare the current load level to a lean-burn load threshold (210, Fig 3). The lean-burn load threshold defines a load level below which stable operation of the internal combustion engine in the lean-burn mode is impossible and/or undesirable. If the current load level of the full hybrid engine is below the lean-burn load threshold, the internal combustion engine is decoupled from the drivetrain and the full hybrid engine is operated in an electric mode. The engine control unit preferably determines a current RPM of the full hybrid engine and to determine the lean-burn load threshold in dependence on the current RPM, or a current NOx concentration in an exhaust stream of the internal combustion engine, while the internal combustion engine is operating in the lean-burn mode. An internal combustion engine, a full hybrid engine, a powertrain for a vehicle, a vehicle and method of operation are also claimed.</description><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</subject><subject>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</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>PERFORMING OPERATIONS</subject><subject>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</subject><subject>TRANSPORTING</subject><subject>VEHICLES IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFD1SU3MU8gvSC1KLMnMS1fIqEwqykxRSE8szs_JzEtVSM1LB1I8DKxpiTnFqbxQmptB3s01xNlDN7UgPz61uCAxOTUvtSTe3cnI1NLY3MzQ0ZiwCgCkJSZN</recordid><startdate>20211006</startdate><enddate>20211006</enddate><creator>Lyn McWilliam</creator><creator>Bryn Littlefair</creator><creator>Thomas Richard Johnson</creator><creator>John Geddes</creator><scope>EVB</scope></search><sort><creationdate>20211006</creationdate><title>Lean operating hybrid gasoline engine</title><author>Lyn McWilliam ; Bryn Littlefair ; Thomas Richard Johnson ; John Geddes</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB2593761A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2021</creationdate><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION</topic><topic>CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES</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>PERFORMING OPERATIONS</topic><topic>ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT</topic><topic>TRANSPORTING</topic><topic>VEHICLES IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Lyn McWilliam</creatorcontrib><creatorcontrib>Bryn Littlefair</creatorcontrib><creatorcontrib>Thomas Richard Johnson</creatorcontrib><creatorcontrib>John Geddes</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lyn McWilliam</au><au>Bryn Littlefair</au><au>Thomas Richard Johnson</au><au>John Geddes</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Lean operating hybrid gasoline engine</title><date>2021-10-06</date><risdate>2021</risdate><abstract>An engine control unit (400, Fig 5) for a full hybrid engine 100 with an internal combustion engine 110 and an electric motor 120 is configured to operate the internal combustion engine in a lean-burn mode, to determine a current load level of the full hybrid engine and to compare the current load level to a lean-burn load threshold (210, Fig 3). The lean-burn load threshold defines a load level below which stable operation of the internal combustion engine in the lean-burn mode is impossible and/or undesirable. If the current load level of the full hybrid engine is below the lean-burn load threshold, the internal combustion engine is decoupled from the drivetrain and the full hybrid engine is operated in an electric mode. The engine control unit preferably determines a current RPM of the full hybrid engine and to determine the lean-burn load threshold in dependence on the current RPM, or a current NOx concentration in an exhaust stream of the internal combustion engine, while the internal combustion engine is operating in the lean-burn mode. An internal combustion engine, a full hybrid engine, a powertrain for a vehicle, a vehicle and method of operation are also claimed.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING COMBUSTION ENGINES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLES IN GENERAL WEAPONS |
| title | Lean operating hybrid gasoline engine |
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