Insulated oil cooled piston assembly
An oil cooled diesel engine piston is designed to restrict heat loss from the combustion chamber through provision of a combustion chamber insert defining a central non-oil-cooled chamber and a surrounding annular insulating air gap. The air gap controls heat flow primarily between the combustion ga...
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| creator | GARTER ROBERT F HAMPARIAN NSHAN |
| description | An oil cooled diesel engine piston is designed to restrict heat loss from the combustion chamber through provision of a combustion chamber insert defining a central non-oil-cooled chamber and a surrounding annular insulating air gap. The air gap controls heat flow primarily between the combustion gas exposed wall of the insert and an adjacent coolant exposed wall of the main piston volume. The insert is press fitted into a recess in the main piston body and is positively locked therein by a retaining ring. A seal ring closes expansion clearance provided at the upper edge of the insert against significant gas flow into the insulating air gap. Insulating efficiency of the air gap is maximized by forming the gap with a thickness throughout a major portion of its extent of between about 0.040 and 0.060 inches. Numerous additional features are also disclosed. |
| format | Patent |
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The air gap controls heat flow primarily between the combustion gas exposed wall of the insert and an adjacent coolant exposed wall of the main piston volume. The insert is press fitted into a recess in the main piston body and is positively locked therein by a retaining ring. A seal ring closes expansion clearance provided at the upper edge of the insert against significant gas flow into the insulating air gap. Insulating efficiency of the air gap is maximized by forming the gap with a thickness throughout a major portion of its extent of between about 0.040 and 0.060 inches. Numerous additional features are also disclosed.</description><language>eng</language><subject>ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES ; BLASTING ; COMBUSTION ENGINES ; COMBUSTION ENGINES IN GENERAL ; COOLING OF INTERNAL-COMBUSTION ENGINES ; COOLING OF MACHINES OR ENGINES IN GENERAL ; CYLINDERS ; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ; ENGINE PLANTS IN GENERAL ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; INTERNAL-COMBUSTION PISTON ENGINES ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; PISTONS ; SEALINGS ; STEAM ENGINES ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>1981</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=19810303&DB=EPODOC&CC=US&NR=4253430A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19810303&DB=EPODOC&CC=US&NR=4253430A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GARTER; ROBERT F</creatorcontrib><creatorcontrib>HAMPARIAN; NSHAN</creatorcontrib><title>Insulated oil cooled piston assembly</title><description>An oil cooled diesel engine piston is designed to restrict heat loss from the combustion chamber through provision of a combustion chamber insert defining a central non-oil-cooled chamber and a surrounding annular insulating air gap. The air gap controls heat flow primarily between the combustion gas exposed wall of the insert and an adjacent coolant exposed wall of the main piston volume. The insert is press fitted into a recess in the main piston body and is positively locked therein by a retaining ring. A seal ring closes expansion clearance provided at the upper edge of the insert against significant gas flow into the insulating air gap. Insulating efficiency of the air gap is maximized by forming the gap with a thickness throughout a major portion of its extent of between about 0.040 and 0.060 inches. Numerous additional features are also disclosed.</description><subject>ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES</subject><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>COMBUSTION ENGINES IN GENERAL</subject><subject>COOLING OF INTERNAL-COMBUSTION ENGINES</subject><subject>COOLING OF MACHINES OR ENGINES IN GENERAL</subject><subject>CYLINDERS</subject><subject>CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>INTERNAL-COMBUSTION PISTON ENGINES</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>PISTONS</subject><subject>SEALINGS</subject><subject>STEAM ENGINES</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1981</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDxzCsuzUksSU1RyM_MUUjOz88BMgsyi0vy8xQSi4tTc5NyKnkYWNMSc4pTeaE0N4O8m2uIs4duakF-fGpxQWJyal5qSXxosImRqbGJsYGjMWEVAIwhJj8</recordid><startdate>19810303</startdate><enddate>19810303</enddate><creator>GARTER; ROBERT F</creator><creator>HAMPARIAN; NSHAN</creator><scope>EVB</scope></search><sort><creationdate>19810303</creationdate><title>Insulated oil cooled piston assembly</title><author>GARTER; ROBERT F ; HAMPARIAN; NSHAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4253430A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1981</creationdate><topic>ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES</topic><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>COMBUSTION ENGINES IN GENERAL</topic><topic>COOLING OF INTERNAL-COMBUSTION ENGINES</topic><topic>COOLING OF MACHINES OR ENGINES IN GENERAL</topic><topic>CYLINDERS</topic><topic>CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>INTERNAL-COMBUSTION PISTON ENGINES</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>PISTONS</topic><topic>SEALINGS</topic><topic>STEAM ENGINES</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>GARTER; ROBERT F</creatorcontrib><creatorcontrib>HAMPARIAN; NSHAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GARTER; ROBERT F</au><au>HAMPARIAN; NSHAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Insulated oil cooled piston assembly</title><date>1981-03-03</date><risdate>1981</risdate><abstract>An oil cooled diesel engine piston is designed to restrict heat loss from the combustion chamber through provision of a combustion chamber insert defining a central non-oil-cooled chamber and a surrounding annular insulating air gap. The air gap controls heat flow primarily between the combustion gas exposed wall of the insert and an adjacent coolant exposed wall of the main piston volume. The insert is press fitted into a recess in the main piston body and is positively locked therein by a retaining ring. A seal ring closes expansion clearance provided at the upper edge of the insert against significant gas flow into the insulating air gap. Insulating efficiency of the air gap is maximized by forming the gap with a thickness throughout a major portion of its extent of between about 0.040 and 0.060 inches. Numerous additional features are also disclosed.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PISTONS SEALINGS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS |
| title | Insulated oil cooled piston assembly |
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