{"id":419,"date":"2024-02-05T08:31:42","date_gmt":"2024-02-05T13:31:42","guid":{"rendered":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/?page_id=419"},"modified":"2024-04-22T13:32:10","modified_gmt":"2024-04-22T17:32:10","slug":"science","status":"publish","type":"page","link":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/science\/","title":{"rendered":"Science"},"content":{"rendered":"

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Gasoline (Petrol) combustion:\u00a0 C8<\/sub>H18<\/sub> + 12.5 O2<\/sub> -> 8 CO2<\/sub> + 9 H2<\/sub>O<\/p>\n

Energy content of gasoline: 44.7 million Joules per Kilogram<\/p>\n

Optimal ratio of air to fuel for complete burning is 14.7<\/p>\n

That is ….\u00a0 14.7 Kg of Air for 1 Kg Gasoline.<\/p>\n

If all of the gasoline is burned, the exhaust is CO2<\/sub> and water vapor.<\/p>\n

Flame temperature is about 2000 degrees Kelvin.\u00a0 Room temp is about 300 degrees Kelvin.<\/p>\n

So, the change in temperature is about a factor of 7 – that gives a pressure change of a factor of 7.<\/p>\n

The increased pressure pushes the piston downward – that is the power stroke.<\/p>\n

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Thermal Expansion<\/p>\n

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Steel:\u00a0 10.8 -12.5 x 10-6<\/sup> \/ degree C<\/p>\n

Cast Iron: 10.4 – 11 x 10-6<\/sup> \/ degree C<\/p>\n

Aluminum: 21 -24 x 10-6<\/sup> \/ degree C<\/p>\n

Copper: 16 – 16.7 x 10-6<\/sup> \/ degree C<\/p>\n

Brass: 18 – 19 x 10-6<\/sup> \/ degree C<\/p>\n

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How does a cable work?\u00a0 \u00a0How does a gear or bearing puller work?<\/p>\n

Ans. for puller – outer portion in tension – inner portion in compression.<\/p>\n

Ans. for cable – outer portion in compression – inner portion in tension.<\/p>\n

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Spark Plug diagnostic chart – what is wrong with my engine?<\/p>\n

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Carburetor: Pilot Jet for Idling.\u00a0 Main Jet for Running.\u00a0 Throttle cable lifts slide (blue) to control flow.<\/p>\n

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Needle affects the fuel flow (see below):<\/p>\n

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Friction<\/p>\n

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Friction Article<\/a><\/p>\n

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Principle of Virtual Work<\/p>\n

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Seth’s Thesis – motor torque-speed<\/a><\/p>\n

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Seth in lab (below)<\/p>\n

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Bridge Rectifier used to Charge Battery:\u00a0 AC from Stator converted to “Pulsed” DC<\/p>\n

Note that the arrow is always going from right to left thru RL<\/sub> (Here the resistor would be the battery)<\/p>\n

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Strength of Materials – mild steel 100,000 psi (pounds per square inch)<\/p>\n

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  Gasoline (Petrol) combustion:\u00a0 C8H18 + 12.5 O2 -> 8 CO2 + 9 H2O Energy content of gasoline: 44.7 million Joules per Kilogram Optimal ratio of air to fuel for complete burning is 14.7 That is ….\u00a0 14.7 Kg of Air for 1 Kg Gasoline. If all of the gasoline is burned, the exhaust is … Continue reading “Science”<\/span><\/a><\/p>\n","protected":false},"author":765,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-419","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/pages\/419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/users\/765"}],"replies":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/comments?post=419"}],"version-history":[{"count":37,"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/pages\/419\/revisions"}],"predecessor-version":[{"id":725,"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/pages\/419\/revisions\/725"}],"wp:attachment":[{"href":"https:\/\/commons.princeton.edu\/59-tiger-cub-2\/wp-json\/wp\/v2\/media?parent=419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}