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  1. 1. ENGINE09ME93 Yasir HashmiQUEST Nawabshah
  2. 2. ENGINE•An engine is a machine which designed to convert energy intouseful mechanical energy•Engines burn a fuel to create heat which is then used to createmotion
  3. 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. 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
  5. 5. PISTON CYLINDER It is a cylinder in which combustion takes place due to compression of fuel and ignition. Piston reciprocates in this cylinder
  6. 6. 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
  7. 7. CRANK SHAFT It converts reciprocating motion of piston into rotation Crank shaft consists of crank throws, crank pins, additional bearing surfaces.
  8. 8. CAM SHAFT Cam shaft is shaft which is fastened in internal combustion engines with pistons It is used to operate valves
  9. 9. DURATION OF A CAM SHAFT It is the number of crank shaft rotation Greater duration results in more horse power
  10. 10. 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
  11. 11. 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
  12. 12. 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
  13. 13. 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
  14. 14. GEARSSome 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.
  15. 15.  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
  16. 16.  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.