3 litters, 4 cylinders engine, multipoint port fuel injection, one for each cylinder. AF ratio is 14.6, the volumetric efficiency is 90%. The engine speed at idle condition is 550 rpm with stoichiometric gasoline and inlet pressure is 30 kPa. But the engine speed is 5900 rpm with stoichiometric gasoline of maximum power, the inlet pressure is 101 kPa. Calculate the following: a. mass air flow rate in one cylinder at maximum speed, b. mass fuel flow rate into one cylinder through an injector, c. mass air flow into one cylinder at idle speed, d. mass fuel flow rate into one cylinder at idle speed, e. injection pulse duration is seconds at idle conditions at idle, f. injection pulse duration is degrees of engine rotation at idle conditions.

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Joining Processes

It is the process of permanent or temporary joining of two metal pieces with the help of heat or pressure. Two metal parts are assembled by applying an energy source for the formation of a single unit. The obtained joined metals cannot be fragmented easily with the application of any force.