SPM Science 2017, Paper 2 (Question 9)


Question 9:
Diagram 9 shows the operational principle of a four-stroke diesel engine.

Diagram 9


(a) Name the part K. [1 mark]

(b) Name the substance L. [1 mark]

(c) Which stroke shows that the diesel is injected into the cylinder? [1 mark]

(d) Mark (\/) in the boxes provided the characteristics of a four-stroke diesel engine. [2 marks]


(e) In your opinion, why most taxis in Malaysia use natural gas as fuel? [1 mark]


Answer:
(a)
Fuel injector

(b)
Air

(c)
T – Power stroke

(d)



(e)
Save cost


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