You are assigned to an OSV fitted with main propulsion diesel engines operating on the cycle represented in the polar timing diagram shown in the illustration. When do the exhaust valves open and close respectively? Illustration MO-0084
A
The exhaust valves open at 55° before bottom dead center on the power stroke. The exhaust valves close at 85° after top dead center on the intake stroke.
B
The exhaust valves open at bottom dead center at the beginning of the exhaust stroke. The exhaust valves close at top dead center at the end of the exhaust stroke.
C
The exhaust valves open at top dead center at the end of the exhaust stroke. The exhaust valves close at bottom dead center at the beginning of the exhaust stroke.
D
Question 1 / 2066636eef28f7522a1c51f70a
Question 1 of 2066636eef28f7522a1c51f70a
You are assigned to an OSV fitted with main propulsion diesel engines operating on the cycle represented in the polar timing diagram shown in the illustration. When do the exhaust valves open and close respectively? Illustration MO-0084
You are assigned to an OSV fitted with main propulsion diesel engines operating on the cycle represented in the polar timing diagram shown in the illustration. When do the exhaust valves open and close respectively? Illustration MO-0084
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The exhaust valves open at 85° after top dead center on the intake stroke. The exhaust valves close at 55° before bottom dead center on the power stroke.