Disadvantages Of Crankshaft

Crankshaft
(crankshaft, n.d.)

Just like a crank on a jack in the box does, the crankshaft changes the up and down motion of the piston to rotational motion.
Loading Factors:-
• Fatigue limit 500Nm
• Nominal stress 688Mpa
• Stress of unrolled crank 332Mpa
• Combustion pressures in the 100-bar neighbourhood (1450 psi)
Design:
Based on the chemical composition of the material we could design the crankshaft dimensions. The crankshaft is designed according to two positions of the crank.
A. When the crank is at dead centre
At this position of the crank the max pressure on the piston will transmit max force on the crankpin in the plane of the crank causing bending at the shaft. Since the bending moment on the shaft is maximum, the twisting moment

Spark plug

(spark plug, n.d.)

The spark plug is a component that ignites the fuel air mixture where combustion occurs. The spark plug should ignite at the right moment so that everything works properly.

Loading factors:-
Checking the strength of the spark plug is so important to make sure that the plug is properly igniting. Improper and insufficient sparks hamper ignition and it results to a failure in the working of an engine. • The spark plug withstands heat at a range more than 1000C degrees.
• Pressure range bar 0-200
• Calibrated partial range bar 0-50
• Overload bar 250
• Sensitivity at 200 °C pC/bar ≈-9,5
• Natural frequency Spark plug with integrated sensor kHz >100
• Operating temperature range, sensor °C -50- 250
• Operating temperature range, cable °C -50 - 200
• Sensitivity change 200 ±50 °C % 1013

Design:-
The spark plug is designed and manufactured with 18-8 rounds of stainless steel formed a 60 degree diamond shaped wire. The cold worked wire has a tensile strength of 200000 PSI. it is wound into a helical coil with a diving tang after the insert is screwed into the helical coil tapped