.~.~ Exchange between engine supply and exhaust lines
DEFINITION
Classification: 165/52
(under subclass 51) Apparatus in which one passage of the
heat exchanger is flow connected to an engine exhaust port and another passage is flow connected to the engine inlet.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
543+, for a heated charge forming device, subclasses 364+ for an internal combustion engine with a feed oil evaporator; and subclass 142.5 for a device limited by structure to use as an internal combustion engine element with means using heat from one part to heat another part by exchanging heat between the parts.
181, Acoustics,
282+, for a jacket or casing, per se, for a muffler.
