Caterpillar Inc.

Eric Nathan Lucas

Orhan Altin

Jason Rex Dare

Seth Evan Slaughter

Kathleen Nackers

Andreia Balan

Kulasegaram Gugaratshan

Christopher David Moore

Shailendra Kardile

Joseph George Dewitt Chambers

An engine crankcase breather includes a housing having a lower end including an inlet opening and an upper end including an outlet opening. The inlet opening lies in a horizontal plane and the outlet opening lies in a vertical plane. A mesh filter is positioned within the housing and includes opposing inlet and outlet faces defining a mesh filter thickness. The inlet and outlet faces are parallel to the inlet opening and are positioned below a central axis through the outlet opening. A bottom wall of the housing defines a portion of the lower end and includes a downward slope toward a lip defining the inlet opening. The mesh filter is spaced above the bottom wall. The engine crankcase breather also includes a plurality of oil return openings through the lip.

Engine crankcase breather with mesh filter

An engine oil consumption measuring system includes a multi-cylinder engine with an exhaust system positioned in a test cell. A sampling probe has an end positioned in the exhaust system to receive exhaust. A sample transfer apparatus includes a first end fluidly connected to the sampling probe and a segment positioned in an interior of a furnace. A mass spectrometer includes a specimen probe with an inlet positioned in the segment of the sample transfer apparatus. A particulate filter is positioned in the segment of the sample transfer apparatus upstream from the inlet of the specimen probe. The sample transfer apparatus and the furnace are maintained at temperatures above an oil condensation temperature during testing.

Engine exhaust gas sampling for mass spectrometer real time oil consumption measurement

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Washington, IL, United States of America

Eric Nathan Lucas