Engineer World

  Differential is an integral part of all four wheelers. A differential is used to allow the wheels to spin at different speeds. This is necessary when the vehicle turns.  Parts of Differential: Pinion drive gear: transfer power from the drive shaft to the ring gear. Ring gear: will transfer power to differential case assembly. Rear drive axel: Transfer torque from differential assembly to the drive wheels. Spider gears: The spider gear lies at the heart of the differential and special mention should be made about its rotation. Differential case assembly: Hold the gear and drive the axel. Working of Differential: When turning, the inner and outer wheels have arcs of different turning radii. The inner wheels travel less distance than the outer wheels. From the drive shaft power is transferred to the pinion gear first, since the pinion and ring gear are meshed, power flows to the ring gear. As the spider gear is connected with the ring gear, po...

Fuel-Injection System is vital to the working and performance of CI engine  This system serves the purpose of initiating and controlling the combustion to meet the demand requirements  Fuel is injected into combustion chamber towards the end of compression.  It is atomized as it enters under high velocity and the droplets get vaporized to form a fuel-air mixture. Functional Requirements of an Injection System:  The following requirements must be met by the Fuel Injection (FI) System:  Accurate metering of fuel injected per cycle to meet changing demand of speed & load. Precise timing of fuel injection in the cycle to ensure performance; power, fuel economy, emissions. Proper control of rate of injection to achieve desired heat release during combustion without knocking.  Proper atomization of fuel into fine droplets  Proper spray pattern to ensure rapid mixing of fuel & air  Uniform distribution of fuel droplets throughout t...

Ignition system is a system in an internal combustion engine that produces the spark to ignite the mixture of fuel and air.  It includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.  It is a part of the electrical system which carries the electrical current to a current plug.  It gives the spark to ignite the air-fuel mixture at the correct time Ignition Function:   It produces 30,000 volt spark across spark plug  It Distributes high voltage spark to each spark plug in correct sequence  Time of the spark occurs when piston is near to top dead center  Spark timing varies with load, speed, and other conditions Basic Ignition System: The components in ignition system are as follow:  Battery,  Switch ignition distributor  Ignition coil  Spark plugs and  Necessary wiring Ignition System types: A battery of 12 volts is generally employed. However, a very high voltage surge (of...

       A fuel filter is a filter in the fuel line that screens out dirt and rust particles from the fuel, normally made into cartridges containing a filter paper. Primary Filter : In most designs, the primary filter is located between the fuel tank and the fuel supply pump.  A primary filter contains a coarse filter material that removes the larger foreign matter.  They are metal filters and only allow fine particles to pass through them.  Solid materials larger than 10 to 50 microns remain outside the metal disks, while the larger foreign matter and most of the water settle to the bottom of the bowl. This matter can be removed through a drain plug.  A ball relief valve in the filter cover enables the fuel to bypass the filter element if the disks become clogged.  Most types of heavy equipment have a fuel pressure gauge that indicates when the filters are dirty. Secondary filter : The secondary filter is usually located betw...

          Clutch is a mechanical device that facilitates transmission of power and motion from one component (the driving member) to another (the driven member) when engaged, with a provision for disengagement whenever required. Function of Clutch: It can be disengaged. This allows engine cranking and permits the engine to run without delivering power to the transmission.  While disengaging, it permits the driver to shift the transmission into various gear according to operating condition.  While engaging, the clutch slips momentarily. this provides smooth engagement and lessens the shock on gears, shaft and other parts of automobile.  While engaging, the clutch transmits the power to the wheel without slipping, in ideal condition. Main Parts of Clutch: These are known as the principle parts of the clutch. • Driving Member  • Driven Member  • Operating Member Driving Member: Driving member has a flywheel which is mounted on...

       5S is a methodology for organizing workplaces so that work can be done efficiently, effectively, and safely. This system focuses on putting everything where it belongs and keeping the workplace clean, which makes it easier for people to do their jobs without wasting time or risking injury. 5S is a workplace organization method that contains a list of five Japanese words i.e.  Seiri ,  Seiton ,  Seiso ,  Seiketsu , and  Shitsuke .         5S means, “ a place for everything and everything in its place " .Implementing 5S raises product quality and improves  work productivity , resulting in  lower costs  and  higher efficiencies .     It doesn't need any technical analysis and can be implemented in all types of companies, ranging from manufacturing plants to offices, small businesses to large multinational organizations and in both private and public sectors. History...