How much is the engine intake air volume?
2 Answers
Engine intake air volume varies for cars with different displacements. Definition of intake air volume: Refers to the flow rate of fresh outside air entering the car engine. It is the oxygen intake during engine operation that ensures normal functioning. Accurate estimation of cylinder intake air volume under transient conditions is one of the effective measures to improve the precision of engine air-fuel ratio control. Intake system structure: The engine intake system consists of a multi-branch pipe system and an air intake system. The air intake system includes components such as the intake control valve, idle air passage, bellows hose, clean air pipe, 1/4 wavelength pipe, air filter, filter element, resonator chamber, and intake pipe.
As a seasoned driver with years of experience, I find engine air intake to be a common yet crucial matter. It directly impacts power output—for instance, when climbing hills, insufficient air intake makes the car feel sluggish and breathless. Air intake is typically measured by the volume of air entering per unit time, such as kilograms or cubic centimeters per second, but this value varies by vehicle. My small-displacement 1.5L naturally aspirated car might intake just a few dozen grams of air per second at idle, but it can surge to several hundred grams at high speeds. The key is to keep the air filter clean—I replace the filter element every 10,000 kilometers to prevent dust clogging and ensure smooth airflow. Hot weather, with its lower air density, can also reduce intake. I advise drivers to stay vigilant and not overlook these minor issues to avoid engine damage. Cleaning the throttle body can also help significantly; maintaining it ensures smooth air intake and a more enjoyable driving experience.
