air intake

Asked by Sep 08, 2008 at 04:06 AM about the 2009 Mazda MAZDA3 i Sport

Question type: General

how does the air intake work exactly and how does it affect the acceleration for the car..

2 Answers

the air intake supplies the engine with the air necessary for gas combustion (read explosion). the more oxygen your car gets, the better the explosion, which creates more power. that equals better acceleration.

35

Most importantly though the air fuel ratio must be understood when dealing with an intake. See air/fuel is all about air density not volume. There is a certain point that the air volume can be increased to a level that makes the car operate poorly. 2 ways to improve air density: Make it Cold eg: intercooler, cold air intake Force it eg: turbocharger, supercharger, Ram air intake. This is all an issue of physics when air molecules are cooled they are less active take up less space and pack together better. the same thing generally happens to air molecules when they are pressurized but the rate at which heat is lost when air is pressurized to say 15psi is marginal so a combination of the two is usually used when trying to increase a cars performance. To the acceleration issue. Oxygen is an oxidizer works in the same way as say nitrous oxide. Except it is abundant and we don't have to keep it in a canister. Components of fire are something to burn and an oxidizer 90% of the time that oxidizer is air. Those rare alternatives are like thermite or sulfer flares usually sulfer iron oxide or potassium and aluminum filings. Iron or potassium act as your oxidizers in these cases. So the more oxidizer we add the better the fuel is consumed. like blowing into a fire or across hot coals. Of course the octane rating of your fuel source has something to do with this as will as it is an indicator of how fast or clean of a burn you will get in these circumstances. Octane is the resistance of a fuel to detonate. Why do you want that well your engine is very hot and you want the fuel to burn when you say not when it feel hot enough to do it. A high octane fuel and denser air will combust faster and more completely thus creating more rapid expansion on the piston. So throttle response generally improves because the detonation is more stable and acceleration is increased to the more rapid combustion of the same amount of fuel. Warning too much air can cause your car to compensate with more fuel and sometimes your car will put out too much fuel and you can actually lose power instead of gain it. If installing an intake modification follow the manufactures method for reseting the default fuel map unless using a standalone or piggyback engine management system. This will force the car to take the readings of the new denser air as the standard and not some sudden change in air temperature since air density is usually calculated by temperature extra cold air can have short term undesirable effects on fuel economy.

Your Answer:

Mazda MAZDA3 Experts

  • #1
    Tom Demyan
    Reputation
    440
  • #2
    Richard Boettger
    Reputation
    260
  • #3
    turbocavalier12
    Reputation
    170
View All

Related Models For Sale

Used Mazda MAZDA6
172 Great Deals out of 13,228 listings starting at $1,000
Used Honda Civic
491 Great Deals out of 44,267 listings starting at $1,150
Used Toyota Corolla
670 Great Deals out of 63,665 listings starting at $1,499
Used Honda Accord
686 Great Deals out of 101,992 listings starting at $999
Used Toyota Camry
859 Great Deals out of 70,689 listings starting at $1,000
Used Hyundai Elantra
455 Great Deals out of 46,205 listings starting at $1,700
Used Ford Focus
488 Great Deals out of 76,542 listings starting at $800
Used Nissan Altima
840 Great Deals out of 61,662 listings starting at $1,000
Used Mazda MAZDASPEED3
15 Great Deals out of 337 listings starting at $3,999
Used Subaru Impreza
179 Great Deals out of 20,631 listings starting at $1,500
Used Volkswagen Jetta
473 Great Deals out of 27,540 listings starting at $1,500
Used Hyundai Sonata
523 Great Deals out of 46,517 listings starting at $1,200

Used Cars For Sale

2016 Mazda MAZDA3 i Sport For Sale
10 Great Deals out of 679 listings starting at $8,591
2015 Mazda MAZDA3 i Sport For Sale
17 Great Deals out of 573 listings starting at $7,900
2014 Mazda MAZDA3 i Sport For Sale
3 Great Deals out of 131 listings starting at $6,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.