Air Intake Filtration Engineering

Airflow Engineering

Pressure drop, restriction, face velocity, and volumetric efficiency — the aerodynamic fundamentals that govern air intake system performance.

Air Restriction and Service Indicators

Restriction measurement with Manovacuometers, OEM restriction limits, altitude correction, and when to change an air filter based on restriction indicators.

Dust Holding Capacity

How ISO 5011 test dust loading predicts field service life — DHC test methodology, the relationship between DHC and restriction at end of life, and capacity comparisons between media types.

ISO 5011 Air Filter Testing

ISO 5011 test methodology: gravimetric efficiency, restriction curves, dust-holding capacity, and how to interpret manufacturer datasheets against the standard.

ISO 5011 Standard Reference

The international air cleaner test standard — test conditions, dust specifications, efficiency calculation methods, and applicability to heavy diesel engines.

Air Intake System Design

Pre-cleaner selection, cyclonic separation, safety element engineering, and air intake system layout for construction, agricultural, and mining equipment.

Air Intake Filtration Flow

Annotated diagram of a heavy-duty diesel air intake system: pre-cleaner, primary element, safety element, restriction indicator, and turbocharger inlet.

Air Filter Restriction Calculator

Calculate maximum allowable restriction at operating altitude and temperature, and estimate remaining filter service life from current restriction readings.