Which two filter roles are addressed by field fuel filters?

Which two filter roles are addressed by field fuel filters?

• A. Magnetic separators and brittle filters.
• B. Coalescing water separators and inline or spin-on filters.
• C. Carbon absorption filters and sand filters.
• D. Ultra-fine ceramic filters and microfiltration membranes.

Answer: (B)

Field fuel filtration tackles two tasks: removing water from fuel and removing solid contaminants. The two filter roles addressed by field fuel filters are coalescing water separation and inline (or spin-on) particulate filtration. The coalescing stage causes tiny water droplets in the fuel to merge into larger droplets that separate out and can be drained, keeping water from reaching the engine. After water removal, the inline or spin-on filter traps dirt, rust, and other particulates that could clog fuel injectors or damage the pump. Other filter types mentioned aren’t typical for field fuel systems, so they don’t fit the standard two-stage approach of water separation plus particulate filtration.

Field fuel filtration tackles two tasks: removing water from fuel and removing solid contaminants. The two filter roles addressed by field fuel filters are coalescing water separation and inline (or spin-on) particulate filtration. The coalescing stage causes tiny water droplets in the fuel to merge into larger droplets that separate out and can be drained, keeping water from reaching the engine. After water removal, the inline or spin-on filter traps dirt, rust, and other particulates that could clog fuel injectors or damage the pump. Other filter types mentioned aren’t typical for field fuel systems, so they don’t fit the standard two-stage approach of water separation plus particulate filtration.