Steam Engine/Terminology: Difference between revisions

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(the following terms need to be defined and ideally illustrated)
(the following terms need to be defined and ideally illustrated)


* '''Cylinder''' - ''a cylindrical shaped chamber into which steam is introduced to push against a piston to generate power.''
* '''Cylinder''' - ''A cylindrical shaped chamber into which steam is introduced to push against a piston to generate power.''
** Cylinder Cap
** '''Cylinder Cap''' - ''A part used to seal one or both ends of a Cylinder.''
** Cylinder Liner or Sleeve
** '''Cylinder Liner or Sleeve''' - A liner on the inside of Cylinder.  Designed to be replaceable since the Piston Rings wear against the liner to create a pressure seal.''
** Bore
** Cylinder Chamber - ''The volume between the Cylinder Cap and the Piston Crown.''
* Piston
** '''Bore''' - ''The inside diameter (ID) of the Cylinder Liner and the outside diameter (OD) of the Piston Ring.''
** Piston Crown
* '''Piston''' - ''A cylindrical shaped element that fits inside of the Cylinder. Expanding steam presses against the piston to generate power.''
** Piston Tail
** '''Piston Crown or Face''' - ''The top of the piston (steam side).''
** Piston Rod (Connecting Rod)
** '''Piston Tail''' - ''The bottom of the piston (drive site).  Usually connects to a Piston Rod to drive a Crankshaft.''
** Piston Ring
** '''Piston Rod (Connecting Rod)''' - ''A rod or linkage that connects the Piston Tail to the Crankshaft.''
* Crankshaft
** '''Piston Ring''' - ''One or more rings set into the piston to form a seal between the piston and the Cylinder Liner.  Seal is necessary to prevent Blow-by.''
** Crank
** '''Piston Cycle''' - ''The motion of a Piston in the Cylinder from Top Dead Center to Mid-Point to Return.''
** Throw (a crank)
* '''Crankshaft''' - ''One or more offset (eccentric) Cranks attached to a Drive Shaft that translate the linear motion of a piston into rotational motion.''
** Eccentric
** '''Crank''- ''An shaft offset set from the Drive Shaft connected to a Piston via a Piston Rod used to transfer motion from the piston to the Drive Shaft.''
** '''Throw''' - ''another term for Crank.''
** '''Eccentric''' - ''Another term for Crank.''
** Mains and Pins (re. crankshaft)
** Mains and Pins (re. crankshaft)
** Flywheel
** '''Flywheel''' - ''A heavy disk attached to the Drive Shaft to store rotational energy as momentum.  Helps move the Piston past Top Dead Center (TDC).''
** Drive Shaft
** '''Drive Shaft''' - ''Outputs the rotational motion created by one or more Cranks from the Crankshaft assembly.''
* Bump Pin
** '''Cam''' - ''An elliptical or circular shaped part of the crankshaft designed to translate the rotary motion of the drive shaft to linear motion needed to activate a Cam Activated Valve (etc).''
* Rocker Arm
* '''Valves''' - ''A device to control the admission of steam into Cylinder Chamber.''
* Valves
** '''Bump Valve or Bash Valve''' - ''A valve activated by a Bump Pin.  A variety of shapes are possible.''
** Bump Valve or Bash Valve
** '''Ball Valve''' - ''A Bump Valve in the shape of a ball held against the Valve Seat by a Valve Spring.''
** Ball Valve
** Piston Valve
** Piston Valve
** Poppet Valve
** Poppet Valve
** Solenoid Valve
** '''Solenoid Valve''' - ''A Valve opened and closed by a Solenoid.''
** Cam Activated Valve
** '''Cam Activated Valve''' - ''A Valve opened and closed by a Rocker Arm.''
** Rocker Valve
** '''Pressure Activated Valve''' - ''A Valve opened and closed by Compression Pressure Activation.''
* Valve Spring
** '''Rocker Valve''' - ''A Valve opened and closed by a Rocker Arm.''
* '''Valve Activators''' - ''Parts, devices, or forces that cause a Valve to open and close.''
** '''Bump Pin''' - ''A small pin usually attached to the Piston Crown that causes a Bump Valve to open just before, during, and just after TDC of the Piston cycle.''
** '''Rocker Arm''' - ''A small linkage that opens a Cam Activated Valve driven by a Cam Link Rod.''
** '''Cam Link Rod''' - ''A linkage that transfers motion from a Cam to a Cam Activated Valve.''
** '''Solenoid''' - ''An electromagnetic plunger that opens (or closes) when a current is applied across a coil.''
** '''Valve Spring''' - ''A spring designed to hold a bump or ball valve against the valve seat.''
** '''Compression Pressure Activation''' - ''Pressure during the compression phase of the Piston Cycle used to open a Pressure Activated Valve.''
* Valve Case
* Valve Case
* Valve Seat
* Valve Seat
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* Clearance
* Clearance
* Cutoff
* Cutoff
* Blowout and Blowby
* Blowout and Blow-by
* Honing
* Honing
* Horsepower (hp)
* Horsepower (hp)

Revision as of 17:02, 4 May 2011

Main > Energy > Steam Engine

Steam engines, like many technical subjects, have their own terms and jargon. These terms are described and illustrated here.


Terms

(the following terms need to be defined and ideally illustrated)

  • Cylinder - A cylindrical shaped chamber into which steam is introduced to push against a piston to generate power.
    • Cylinder Cap - A part used to seal one or both ends of a Cylinder.
    • Cylinder Liner or Sleeve - A liner on the inside of Cylinder. Designed to be replaceable since the Piston Rings wear against the liner to create a pressure seal.
    • Cylinder Chamber - The volume between the Cylinder Cap and the Piston Crown.
    • Bore - The inside diameter (ID) of the Cylinder Liner and the outside diameter (OD) of the Piston Ring.
  • Piston - A cylindrical shaped element that fits inside of the Cylinder. Expanding steam presses against the piston to generate power.
    • Piston Crown or Face - The top of the piston (steam side).
    • Piston Tail - The bottom of the piston (drive site). Usually connects to a Piston Rod to drive a Crankshaft.
    • Piston Rod (Connecting Rod) - A rod or linkage that connects the Piston Tail to the Crankshaft.
    • Piston Ring - One or more rings set into the piston to form a seal between the piston and the Cylinder Liner. Seal is necessary to prevent Blow-by.
    • Piston Cycle - The motion of a Piston in the Cylinder from Top Dead Center to Mid-Point to Return.
  • Crankshaft - One or more offset (eccentric) Cranks attached to a Drive Shaft that translate the linear motion of a piston into rotational motion.
    • 'Crank- An shaft offset set from the Drive Shaft connected to a Piston via a Piston Rod used to transfer motion from the piston to the Drive Shaft.
    • Throw - another term for Crank.
    • Eccentric - Another term for Crank.
    • Mains and Pins (re. crankshaft)
    • Flywheel - A heavy disk attached to the Drive Shaft to store rotational energy as momentum. Helps move the Piston past Top Dead Center (TDC).
    • Drive Shaft - Outputs the rotational motion created by one or more Cranks from the Crankshaft assembly.
    • Cam - An elliptical or circular shaped part of the crankshaft designed to translate the rotary motion of the drive shaft to linear motion needed to activate a Cam Activated Valve (etc).
  • Valves - A device to control the admission of steam into Cylinder Chamber.
    • Bump Valve or Bash Valve - A valve activated by a Bump Pin. A variety of shapes are possible.
    • Ball Valve - A Bump Valve in the shape of a ball held against the Valve Seat by a Valve Spring.
    • Piston Valve
    • Poppet Valve
    • Solenoid Valve - A Valve opened and closed by a Solenoid.
    • Cam Activated Valve - A Valve opened and closed by a Rocker Arm.
    • Pressure Activated Valve - A Valve opened and closed by Compression Pressure Activation.
    • Rocker Valve - A Valve opened and closed by a Rocker Arm.
  • Valve Activators - Parts, devices, or forces that cause a Valve to open and close.
    • Bump Pin - A small pin usually attached to the Piston Crown that causes a Bump Valve to open just before, during, and just after TDC of the Piston cycle.
    • Rocker Arm - A small linkage that opens a Cam Activated Valve driven by a Cam Link Rod.
    • Cam Link Rod - A linkage that transfers motion from a Cam to a Cam Activated Valve.
    • Solenoid - An electromagnetic plunger that opens (or closes) when a current is applied across a coil.
    • Valve Spring - A spring designed to hold a bump or ball valve against the valve seat.
    • Compression Pressure Activation - Pressure during the compression phase of the Piston Cycle used to open a Pressure Activated Valve.
  • Valve Case
  • Valve Seat
  • Steam Inlet
  • Steam Outlet or Vent
  • Steam Engine
    • Uniflow or Unaflow
    • Counterflow
  • Action
    • Single Action
    • Double Action
    • Continuous Action
  • Exhaust Plenum
  • Oil Sprayer
  • Steam Generator
  • Water Drain
  • Clearance
  • Cutoff
  • Blowout and Blow-by
  • Honing
  • Horsepower (hp)
  • DeSaxe Principle
  • Cycles (various kinds)
  • Starter Motor
  • Forces
    • Compression
    • Torsion
    • Tension
    • Shear
  • Spalling and Galling
  • Sensors
    • Water Level Sensor
    • Pressure Gauge


Abbreviations

  • AES (Automotive Engineering Society)
  • SACA (Steam Automotive Club of America)
  • HP (High Pressure)
  • hp (Horse Power)
  • LP (Low Pressure)
  • OD (Outside Diameter)
  • ID (Inside Diameter)
  • DIA (abbreviation for Diameter)
  • IC (Internal Combustion)
  • TDC (Top Dead Center)
  • RPM (Rotations per Minute)
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