Search PPTs

Friday, August 2, 2013

PPT On Internal Combustion Engines


Internal Combustion Engines Presentation Transcript: 
1.Internal Combustion Engines


The internal combustion engine (Ie) is a heat engine that converts chemical energy in a fuel into mechanical energy, usually made available on a rotating output shaft.
Chemical energy of the fuel is first converted to thermal energy by means of combustion or oxidation with air inside the engine. This thermal energy raises the temperature and pressure of the gases within the engine, and the high-pressure gas then expands against the mechanical mechanisms of the engine. This expansion is converted by the mechanical linkages of the engine to a rotating crankshaft, which is the output of the engine. The crankshaft, in turn, is connected to a transmission and/or power train to transmit the rotating mechanical energy to the desired final use.

4.Internal combustion engines

5.Engines for automotive and construction equipment may be classified in several ways.
  Fuel used
light oil engine
heavy oil engine
Gas engine
Bi-fuel engine 
Method of Fuel supply
 Through carburetor
Multipoint port injection
Single point throttle body
Fuel injection at high pressure

6.Method of Ignition:
Spark ignition
Compression ignition
Method of Cooling
Water cooled engine
Air cooled engine
Low speed engine
Medium speed engine
High speed engine
Field of application
Stationary engines for power generation
Marine engines for propulsion of ships
Automotive engines for land transport
Aero engines for aircraft
Locomotive engines for railways
Lubrication system
Wet sump engine
Dry sump engine
Pressure lubrication
Method of control under variable load
Quantity control engine
Quality control engine
Combined control engine

7.RX8 is quick to 7,000rpm and then everything really does go hyperspace blurry up to 9,000rpm.
will cover the  60mph  in 6 seconds.
The two rotary derivatives produce 192 and 231bhp respectively.

8.Criteria of performance

9.Indicated power
Brake power
Friction power
Mechanical efficiency
Brake mean effective pressure
Thermal efficincy
Fuel consumption
Volumetric efficiency

10.Wankel engine :
operate using a rotor and shaft instead of a piston. The rotation of the shaft moves a three sided rotor which drives the movement of fuel through the system. In these engines, the different phases (intake, compression, power, and exhaust) take place in separate locations in the engine. The driveshaft rotates once for every time the engine fires in the Wankel design.

Wankel engines are often lighter and simpler in design than equivalent piston engines. They are also typically more reliable (due to the reduction of moving parts) and have higher power-to-weight ratios. However, they suffer from less effective sealing which reduces their efficiency and lifespan. These engines are used mainly in racecars and sporting vehicles where reliability and lightness are considered more important than efficiency and engine life.

No comments:

Related Posts Plugin for WordPress, Blogger...

Blog Archive