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HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS (steam engine plants, special vapour plants, plants operating on either hot gas or combustion-product gases together with other fluid F01K; gas-turbine plants F02C; jet-propulsion plants F02K); USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
Definition statement
This subclass/group covers:

Hot-gas or combustion product positive-displacement engine plants and use of waste heat of combustion engines, not otherwise provided for.

Hot gas positive-displacement engine plants (positive-displacement engine plants characterised by the working gas being generated by combustion in the plant F02G 3/00)
Definition statement
This subclass/group covers:

Hot gas positive-displacement engine plants, e.g. Stirling engines.

References relevant to classification in this group
This subclass/group does not cover:
Steam engine plants, special vapour plants, plants operating on either hot gas or combustion-product gases together with other fluid
Gas-turbine plants
Jet-propulsion plants
Informative references
Attention is drawn to the following places, which may be of interest for search:
Positive-displacement engine plants characterised by the working gas being generated by combustion in the plant
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Plant
an engine together with such additional apparatus as is necessary to run the engine. For example, a steam engine plant includes a steam engine and means for generating the steam.
the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engine
Definition statement
This subclass/group covers:

"Stirling" type engines.

Stirling engines are divided in three types:

- Alpha.

Pairs of sealed pistons in separate cylinders (no displacer).

a. with parallel pistons.

b. with cylinders opposed in line.

c. with cylinders opposed parallel.

- Beta.

Piston - displacer arrangement: piston and displacer in the same

cylinder. Cylinder has a hot end and a cool end:

- Gamma.

Piston - displacer arrangement : piston and displacer in separate cylinders:

having at least two working members, e.g. pistons, delivering power output
Definition statement
This subclass/group covers:

Stirling type engine having at least two working members, e.g. pistons, delivering power output. E.g. Vuilleumier cycle:

Positive-displacement engine plants characterised by the working gas being generated by combustion in the plant
Definition statement
This subclass/group covers:

Positive-displacement engine plants characterised by the working gas being generated by combustion in the plant, e.g. positive displacement engine plants with external combustion:

References relevant to classification in this group
This subclass/group does not cover:
Stirling engines
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Plant
an engine together with such additional apparatus as is necessary to run the engine. For example, a steam engine plant includes a steam engine and means for generating the steam.
Profiting from waste heat of combustion engines, not otherwise provided for
Definition statement
This subclass/group covers:

Profiting from waste heat of combustion engines, not otherwise provided for, e.g. converting heat directly to electric power via a thermoelectric generator using the Seebeck effect or converting the waste heat to mechanical power using a Rankine cycle.

References relevant to classification in this group
This subclass/group does not cover:
Exhaust or silencing apparatus combined or associated with devices profiting by exhaust heat
Vehicle heating derived from propulsion plant
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Last Modified: 10/11/2013