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Pent-roof combustion chamber

From Wikipedia, the free encyclopedia

In engine design, the penta engine (or penta head) is an arrangement of the upper portion of the cylinder and valves that is common in engines using four valves per cylinder.[1] Among the advantages is a faster burn time of the air-fuel mix.[2]

It is similar in concept to the hemi engine, both in design and purpose, but a hemispherical cylinder head is limited to only two valves without the use of a more complex sub-rocker assembly.

The four-valve penta engine design was invented by Peugeot of France,[citation needed] to be first used in the 1911 Indianapolis 500 race.

The penta engine (also termed pentroof combustion chamber) is the most common design[citation needed] used today[when?] by many manufacturers for four-valve-per-cylinder engines producing relatively high horsepower for displacement, for both racing engines and engines for passenger cars.

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Transcription

References

  1. ^ Tim Gilles (1 January 2014). Automotive Engines. Cengage Learning. p. 15. ISBN 978-1-305-17665-2. Retrieved 10 December 2016.
  2. ^ Tim Gilles (1 January 2014). Automotive Engines. Cengage Learning. p. 88. ISBN 978-1-305-17665-2. Retrieved 10 December 2016.


This page was last edited on 27 December 2019, at 15:01
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