Question 163Motor Plants - QMED

The correct answer is B) exhaust temperature. The exhaust temperature of a marine diesel engine is a key factor that limits the amount of load that can be applied to the engine. This is because excessive exhaust temperatures can lead to thermal damage to the engine components, reducing the engine's reliability and service life. The engine's design and operating parameters, such as the turbocharger and fuel injection system, are optimized to maintain the exhaust temperature within safe limits to prevent such damage. The other options are not the primary factors limiting the engine load. While the governor sensitivity, fuel injection pressure, and camshaft speed are important parameters, they do not directly limit the engine load in the same way as the exhaust temperature.