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ถ้ายังมีข้อโต้แย้งผมว่าดูนี่ดีกว่า
http://www.enginebasics.com/EFI%20Tuning/Air%20Intake%20Temp%20Tuning.html
Warm air is less dense
As AIT climb in your motor you will notice that you will be losing power. This is because air expands as it heats up, therefore there will be less oxygen molecules per square inch. So even though your motor is going through the same stroke of displacement, and the motor sucks in the same amount of volume of air, that doesnt mean that the volume of air contains the same amount of oxygen molecules. Because of this the car will have less power as the AITs get hotter. This is why people install hood scopes or intakes that bring in cool outside air instead of sucking in warm air from under the hood. Also you will notice that the A/F ratio will become richer because while the same amount of fuel is being injected, yet the air is not as dense as it was because of the warmer air temperature.
Cool air is more dense
Cooler air gives you more power because there are more oxygen molecules per square inch of air
.meaning the air is denser. Denser air is better because your motor will now ingest more air in a given stroke. Because of this you will notice that the A/F ratio of the motor will become lean due to that fact that your motor is still injecting the same amount of fuel but there is more oxygen present because of the denser air.
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มนุษย์ถ้ำ  
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15 ธ.ค. 55 16:22:37
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