Air Intake systems come in many different styles and can beconstructed from plastic, metal, rubber (silicone) or compositematerials (fiberglass, carbon fiber or kevlar). Due to the limited timeair actually remains inside the intake tubing, the materials often donot impact a kit's ability to deliver cool air. The most efficientintake systems utilize an airbox which is sized to compliment theengine and will extend the powerband of the engine. The intake snorkel(opening for the intake air to enter the system) must be large enoughto ensure sufficient air is available to the engine under allconditions from idle to full throttle. If the intake opening has anunrestricted opening - no screens or other obstructions - the openingneed not be larger than the inside diameter of the engine's throttlebody, airhorn, or carburetor throat. Under some conditions Intakesystem efficiency can be lost if the intake opening for the airbox istoo large.
The most basic air intake replaces the stock airboxwith a short metal or plastic tube leading to a conical air filter,called a Short Ram Air Intake. The power gained bythis method can vary depending on how restrictive the factory airboxis. The placement of the filter is usually directly in the enginecompartment. The overall benefits depend on the specific application.Power may be lost at certain engine speeds, and gained at others.Because of the increased airflow and reduced covering, intake noise isusually increased. This effect is usually amplified on applicationswhere a resonator, a part intended to reduce intake noise on somevehicles, is replaced by the intake. Well designed intakes use heatshields to isolate the air filter from the rest of the enginecompartment, providing cooler air from the front or side of the enginebay. A Cold Air Intake is a system used to bringdown the temperature of the air going into a car for the purpose ofincreasing the power of the internal-combustion engine. A secondarygoal is to increase the appeal of a car by changing the appearance of acar's engine bay and creating an attractive intake noise. Theseaftermarket parts come in many different colors and many differentsizes. |
發表於 2009-12-26 04:22 AM
| 
