Question 134Motor Plants - Assistant Engineer70% to pass
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by _______________.
AI Explanation
The correct answer is B) compressed air pressure.
In modern, large, low-speed, main propulsion diesel engines, the closing of the exhaust valves is typically provided by compressed air pressure. The compressed air is used to apply a force that closes the exhaust valves after the exhaust stroke, allowing for efficient engine operation.
The other options are incorrect because: A) mechanical push rods are more commonly used for the opening of the valves, not the closing; C) hydraulic pressure is used for other engine functions, not specifically for closing the exhaust valves; and D) exhaust gas pressure is not directly responsible for closing the exhaust valves in this type of engine.
Related Questions
#132 The opening of an exhaust valve on a modern, large, low-speed, main propulsion diesel engine, may be actuated by_______________.#133 The exhaust ports shown in the illustration are identified with the letter '_______________'. Illustration MO-0003 #135 The insertion of shims between the foot of a marine type connecting rod and a bearing box would result in_______________.#136 The fuel injector for the diesel engine shown in the illustration, is identified as_______________. Illustration MO-0122 #137 Which letter represents the top deck (valve) cover of the engine shown in the illustration? Illustration MO-0122