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ENGINE
09ME93 Yasir Hashmi
QUEST Nawabshah
ENGINE

•An engine is a machine which designed to convert energy into
useful mechanical energy
•Engines burn a fuel to create heat which is then used to create
motion
MAIN PARTS OF AN ENGINE
 Piston
 Piston cylinder

 Inlet and outlet valves

 Water pump

 Oil pump

 Oil chamber

 Clutch plate

 Crank shaft

 Cam shaft

 Gears
PISTON

 It is the moving component that is contained by the
  cylinder
 Its purpose is to transfer force from expanding gas
  in the cylinder to the crank shaft with a connecting
  rod
Engine
PISTON CYLINDER
   It is a cylinder in which combustion takes place due
    to compression of fuel and ignition. Piston
    reciprocates in this cylinder
INLET AND OUTLET VALVES
 One of the most necessary part of the engine
 These valves open and close according to the
  timing of combustion
 Inlet valves opens to take the fuel into the cylinder
  and closes during combustion
CRANK SHAFT
 It converts reciprocating motion of piston into
  rotation
 Crank shaft consists of crank throws, crank pins,
  additional bearing surfaces.
CAM SHAFT
 Cam shaft is shaft which is fastened in internal
  combustion engines with pistons
 It is used to operate valves
DURATION OF A CAM SHAFT
 It is the number of crank shaft rotation
 Greater duration results in more horse power
CLUTCH PLATE
 A mechanical device which provides transmission
  of power from one component to another
 Clutches are used whenever the ability to limit the
  transmission of power or motion needs to be
  controlled either in amount or overtime
Engine
OIL PUMP
 Oil pump in the engine is a gear type driven by the
  crank shaft or a rotor type
 Oiling system is used to properly lubricate an
  engine when it is running
OIL PRESSURE
 Oil pressure generated in most engines is about 10
  PSI per every 1000 revolutions per minute (RPM)
  peaking around 55-56 PSI
 Local pressure at ( crank shaft journal and bearing )
  is far higher than 50,60 PSI
WATER PUMP
 It is a simple centrifugal pump driven by a belt
  connected to a crank shaft of the engine
 It circulates the fluid whenever the engine is running
GEARS
Some sort of gears are used in engine such as
 Spur gear
              it consist of a cylinder or disk with the
  teeth projecting radially and although they are not
  straight sided in the form, the edge of each tooth is
  straight and aligned parallel to the axis of rotation.
   Helical gears
                   The leading edges of the teeth are not
    parallel to the axis of rotation , but are set at an
    angle. Since the gear is curved , this angling
    causes the tooth causes the tooth shape to be a
    segment of a helix
   Bevel gears
                   It is a right circular cone with most of
    its tip cut off. The angle between can be anything
    except zero or 180 degrees. Bevel gears with
    equal numbers of teeth and shaft axes at 90
    degrees are called miter gears.

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Engine

  • 2. ENGINE •An engine is a machine which designed to convert energy into useful mechanical energy •Engines burn a fuel to create heat which is then used to create motion
  • 3. MAIN PARTS OF AN ENGINE  Piston  Piston cylinder  Inlet and outlet valves  Water pump  Oil pump  Oil chamber  Clutch plate  Crank shaft  Cam shaft  Gears
  • 4. PISTON  It is the moving component that is contained by the cylinder  Its purpose is to transfer force from expanding gas in the cylinder to the crank shaft with a connecting rod
  • 6. PISTON CYLINDER  It is a cylinder in which combustion takes place due to compression of fuel and ignition. Piston reciprocates in this cylinder
  • 7. INLET AND OUTLET VALVES  One of the most necessary part of the engine  These valves open and close according to the timing of combustion  Inlet valves opens to take the fuel into the cylinder and closes during combustion
  • 8. CRANK SHAFT  It converts reciprocating motion of piston into rotation  Crank shaft consists of crank throws, crank pins, additional bearing surfaces.
  • 9. CAM SHAFT  Cam shaft is shaft which is fastened in internal combustion engines with pistons  It is used to operate valves
  • 10. DURATION OF A CAM SHAFT  It is the number of crank shaft rotation  Greater duration results in more horse power
  • 11. CLUTCH PLATE  A mechanical device which provides transmission of power from one component to another  Clutches are used whenever the ability to limit the transmission of power or motion needs to be controlled either in amount or overtime
  • 13. OIL PUMP  Oil pump in the engine is a gear type driven by the crank shaft or a rotor type  Oiling system is used to properly lubricate an engine when it is running
  • 14. OIL PRESSURE  Oil pressure generated in most engines is about 10 PSI per every 1000 revolutions per minute (RPM) peaking around 55-56 PSI  Local pressure at ( crank shaft journal and bearing ) is far higher than 50,60 PSI
  • 15. WATER PUMP  It is a simple centrifugal pump driven by a belt connected to a crank shaft of the engine  It circulates the fluid whenever the engine is running
  • 16. GEARS Some sort of gears are used in engine such as  Spur gear it consist of a cylinder or disk with the teeth projecting radially and although they are not straight sided in the form, the edge of each tooth is straight and aligned parallel to the axis of rotation.
  • 17. Helical gears The leading edges of the teeth are not parallel to the axis of rotation , but are set at an angle. Since the gear is curved , this angling causes the tooth causes the tooth shape to be a segment of a helix
  • 18. Bevel gears It is a right circular cone with most of its tip cut off. The angle between can be anything except zero or 180 degrees. Bevel gears with equal numbers of teeth and shaft axes at 90 degrees are called miter gears.