Question 1
- (a)(i) Draw a crankshaft of a four cylinder in-line engine.
(ii) Label any four parts on the sketch in 1(a) (i) above.
(b) State three functions of a crankshaft.
(c) (i) How many crankpin journals does a four-cylinder engine crankshaft have?
(ii) How many main bearing journals does a four-cylinder in-line engine crankshaft have?
Observation
Most candidates attempted this question with good performance in parts (a) and (c) of the question. The problematic part of the question was part (b). The required response to part (b) is given below:
(b) The functions of a crankshaft include: