In a diesel engine the fuel is ignited when it is injected into hot compressed air, heated by the compression itself. In a typical high-speed diesel engine, the chamber in the cylinder has a diameter of 10.7 cm and a length of 13.4 cm. On compression, the length of the chamber is shortened by 12.7 cm (a "5-inch stroke"). The compression of the air changes its pressure from 1.00 to 39.5 atm. The temperature of the air before compression is 391 K.

Sustainable Energy
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Author:DUNLAP, Richard A.
Publisher:DUNLAP, Richard A.
Chapter18: Energy Storage
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In a diesel engine the fuel is ignited when it is injected into hot compressed air, heated by the compression itself. In a typical high-speed
diesel engine, the chamber in the cylinder has a diameter of 10.7 cm and a length of 13.4 cm. On compression, the length of the
chamber is shortened by 12.7 cm (a “5-inch stroke"). The compression of the air changes its pressure from 1.00 to 39.5 atm. The
temperature of the air before compression is 391 K.
As a result of the compression, what will be the final air temperature (in Kand °C) just before the fuel injection?
temperature =
K = i
°C
eTextbook and Media
Hint
Assistance Used
Determine the volume change as a way to get a handle on the new temperature.
What equation relates pressure, temperature, and volume?
The volume of the cylinder = z r² (height).
Remember that the radius is half the diameter.
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Transcribed Image Text:Question 4 of 10 0/1 E View Policies Show Attempt History Current Attempt in Progress In a diesel engine the fuel is ignited when it is injected into hot compressed air, heated by the compression itself. In a typical high-speed diesel engine, the chamber in the cylinder has a diameter of 10.7 cm and a length of 13.4 cm. On compression, the length of the chamber is shortened by 12.7 cm (a “5-inch stroke"). The compression of the air changes its pressure from 1.00 to 39.5 atm. The temperature of the air before compression is 391 K. As a result of the compression, what will be the final air temperature (in Kand °C) just before the fuel injection? temperature = K = i °C eTextbook and Media Hint Assistance Used Determine the volume change as a way to get a handle on the new temperature. What equation relates pressure, temperature, and volume? The volume of the cylinder = z r² (height). Remember that the radius is half the diameter. Save for Later
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