pistonless
Lacking reciprocating parts
Pistonless describes engines or mechanisms that operate without pistons—the cylindrical components that move up and down in traditional internal combustion engines.
Rotary engines, turbines, and some electric motors are pistonless designs: The pistonless motor ran more smoothly with fewer moving parts.
Involving circular motion
- turbineBlade-driven energy converter
- jetForced fluid stream
- electricPowered by current
- motorEnergy-to-motion converter
propulsion · combustion · design · mechanism · rotor · efficiency · smooth · reciprocating
Muscle separating chest, abdomen
- peristalticWave-like muscular contractions
- centrifugalDirected away from axis
- hydraulicRelating to pressurized liquids
- fluidSubstance that flows
membrane · compression · valveless · flow · pressure · medical · infusion · dosing
Wound document of parchment
- screwThreaded metal fastener
- rotaryInvolving circular motion
- centrifugalDirected away from axis
- airGaseous envelope surrounding Earth
refrigeration · HVAC · silent · oil-free · continuous · vane · lobe · turbo
rotary
Involving circular motion
motor · propulsion · combustion · design · mechanism · rotor · efficiency · smooth · reciprocating · alternative
diaphragm
Muscle separating chest, abdomen
- peristalticWave-like muscular contractions
- centrifugalDirected away from axis
- hydraulicRelating to pressurized liquids
fluid · membrane · compression · valveless · flow · pressure · medical · infusion · dosing · transfer
scroll
Wound document of parchment
- screwThreaded metal fastener
- rotaryInvolving circular motion
- centrifugalDirected away from axis
air · refrigeration · HVAC · silent · oil-free · continuous · vane · lobe · turbo · dynamic
pistonlessreciprocating
Moving back and forth
four-stroke · two-stroke · conventional · piston engine · internal combustion