Midland Brake, Inc.

Joseph C Spencer

A governor-controlled pneumatic braking system for use with vehicles equipped with an internal combustion engine having a unit associated therewith for discharging engine exhaust gases. The system includes an air dryer to effect removal of moisture and contaminants from the compressed air. The air dryer is provided with a unit for reversely flowing purge air therethrough when the compressor is not operating in the loading or compressing cycle. A conduit are provided for subjecting the purge air exhausting from the dryer to high temperatures so as to cause vaporization of moisture and combustion of combustible contaminants thereby preventing their discharge into the environment.

Air dryer purge line

In a heavy-duty truck having a turbocharged internal combustion engine and a lubricating system wherein lubricating oil from the engine oil reservoir is circulated both within the engine and also to and from an associated brake system air compressor, supercharged air is passed to the oil crankcase of the air compressor to cause lubricating oil to drain therefrom and return to the engine oil reservoir. This minimizes windage and resulting engine power losses, reduces oil consumption and avoids problems associated with the undesired entry of lubricating oil into the brake system via the air compressor.

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Kansas City, MO, United States of America

Joseph C Spencer