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In an internal combustion engine, an air/fuel mixture at atmospheric pressure an

ID: 2078610 • Letter: I

Question

In an internal combustion engine, an air/fuel mixture at atmospheric pressure and 23 °C is compressed in a cylinder by a piston to 1/9 of its original volume (compression ratio of 9).

A: -240.27
C: -240.1


Format Check


7.54 pts.83%

In an internal combustion engine, an air/fuel mixture at atmospheric pressure and 23 °C is compressed in a cylinder by a piston to 1/9 of its original volume (compression ratio of 9).

I tried 9atm for b which is wrong and 911(°C) for c is also wrong pls help spark plug fuel and air compressed fuel and air piston O piston shaft Matthew Pippin

Explanation / Answer

part B

since temp is constant

PV=constant

if volume is decreased 9 times,pressure will increase 9 times

pressure=9 atm

gauge pressure=9-1=8 atm

(c) if gauge pressure is 36 atm

new pressure = 37 atm

let tem=T

we know

PV/T=constant

1*9V/296=37*V/T

we got T=1216.88K=943.9 C

T=943.9 C

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