Question

Select any design/mechanism and perform a benchmarking analysis similar to an example

discussed during lecture. Analysis report should contain following information: description

of the design/mechanism, working principle, part list with material and manufacturing

method for each component, disassembly sequence.

2. Select any design/mechanism and perform a benchmarking analysis similar to an example discussed during lecture. Analysis report should contain following nformation: description of the design/mechanism, working principle, part list with material and manufacturing method for each component, disassembly sequence. (30 points)

Answer 1

the mechanism selected is slider crank mechanism.

this mechanism is the most comonly used mechanism in IC engines and reciprocating pumps.

see below explanations as asked.

solution: ( ) Mechanism slider crank mechanism Which is used in I-c- ongine to generate shaft work. It consists of four-link having three revolute joints and one prismatic (sliding joint) 2 working principle » The rotation of crank drives the lénear motion to the slider (the joint at crank and connecting rod is revolute joint) or vice versa. revolute joint Crank connecting rod ܛ ܀ w 5 slider rotational motion crank is converted to translational motion of slides. Translational motion of slider is converted to rotational motion of

Crank, which is connected by shaft of the engine which gets power to drive wheels. of the vehichle. Parts > It consists of : (i) crank of It is made of steel ictured either by forging or casting. and manufa (ii) connecting rod It is also made of steel and by the method of forging mostly. But some time casting is also used. (iii) slider The slider which known as piston in 1.6- engines and pestons are made of cast aluminium alloy for excellent and light weight thermal conductin - véty used casting process. Disassembly sequence : (i) crank is removed (ii) connecting rod (iii) piston. is removed from the mechanism.