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  2. Engine pressure ratio - Wikipedia

    en.wikipedia.org/wiki/Engine_pressure_ratio

    The engine pressure ratio (EPR) is the total pressure ratio across a jet engine, measured as the ratio of the total pressure at the exit of the propelling nozzle divided by the total pressure at the entry to the compressor. [1] Jet engines use either EPR or compressor/fan RPM as an indicator of thrust. [2]

  3. Overall pressure ratio - Wikipedia

    en.wikipedia.org/wiki/Overall_pressure_ratio

    Engine pressure ratio (EPR) differs from OPR in that OPR compares the intake pressure to the pressure of the air as it exits the compressor, and is always greater than 1 (often very much so), whereas EPR compares the intake pressure to the pressure at the engine's tailpipe (i.e., after the air has been used for combustion and given up energy to ...

  4. Hornsby–Akroyd oil engine - Wikipedia

    en.wikipedia.org/wiki/Hornsby–Akroyd_oil_engine

    1893 Hornsby–Akroyd oil engine at the museum of Lincolnshire life, Lincoln, England 14 hp Hornsby–Akroyd oil engine at the Great Dorset Steam Fair in 2008. The Hornsby–Akroyd oil engine, named after its inventor Herbert Akroyd Stuart and the manufacturer Richard Hornsby & Sons, was the first successful design of an internal combustion engine using heavy oil as a fuel.

  5. Oil field engine - Wikipedia

    en.wikipedia.org/wiki/Oil_field_engine

    A one-ended steel pipe mounted at an angle off the end of the exhaust pipe which gave the exhaust of the engine a unique tone and pitch; used to discern engines from a distance. Half-Breed: An oil field engine converted from a steam engine; may also refer to a purely internal combustion engine built with new-cast, repurposed steam engine parts.

  6. EPR Properties Appoints New Member to Its Board of Trustees - AOL

    www.aol.com/2013/06/05/epr-properties-appoints...

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  7. Automotive oil recycling - Wikipedia

    en.wikipedia.org/wiki/Automotive_oil_recycling

    Automotive oil recycling involves the recycling of used oils and the creation of new products from the recycled oils, and includes the recycling of motor oil and hydraulic oil. Oil recycling also benefits the environment: [1] increased opportunities for consumers to recycle oil lessens the likelihood of used oil being dumped on lands and in ...

  8. EPR - Wikipedia

    en.wikipedia.org/wiki/EPR

    EPR (nuclear reactor), European Pressurised-Water Reactor; EPR paradox (Einstein–Podolsky–Rosen paradox), in physics; Earth potential rise, in electrical engineering; East Pacific Rise, a mid-oceanic ridge; Electron paramagnetic resonance; Engine pressure ratio, of a jet engine; Ethylene propylene rubber

  9. Pulsed electron paramagnetic resonance - Wikipedia

    en.wikipedia.org/wiki/Pulsed_electron...

    ESEEM [3] [5] and pulsed ENDOR [4] [5] are widely used echo experiments, in which the interaction of electron spins with the nuclei in their environment can be studied and controlled. A popular pulsed EPR experiments currently is double electron-electron resonance (DEER), which is also known as pulsed electron-electron double resonance (PELDOR ...