Question 184Motor Plants - Assistant Engineer70% to pass
The pilot valves in an air pilot starting system for a two-stroke cycle, direct reversing, main propulsion diesel engine are operated by either a ported distributor disc or a/an_______________.
AI Explanation
The correct answer is D) individual cam for each pilot valve.
In a two-stroke cycle, direct reversing, main propulsion diesel engine, the pilot valves in the air pilot starting system are typically operated by individual cams, rather than a ported distributor disc or other mechanisms. This is because the individual cams provide precise timing and control over the opening and closing of each pilot valve, which is crucial for the proper operation and starting of the diesel engine.
The other options, such as a regulator valve (A), a quick opening main air valve (B), or a pilot air start check valve (C), are not directly involved in the operation of the pilot valves and therefore are not the correct answer.
Related Questions
#182 During the starting of a diesel engine, compression gases are prevented from backing into the air starting system, shown in the illustration, by the_______________. Illustration MO-0046 #183 Which of the following statements is true concerning the air starting valve, labeled "III", as shown in the illustration? Illustration MO-0046 #185 A six-cylinder, four-stroke cycle diesel engine is fitted with a rotary distributor type air starting system. The speed of the rotating distributor disc is_______________. #186 Starting systems for large, direct reversing, main propulsion diesel engines are usually_______________.#187 In a direct cylinder admission air starting system, once the engine begins to fire, the air starting check valve illustrated, is closed by_______________. Illustration MO-0107