Question 14Motor Plants - Assistant Engineer

The correct answer is C) c. The pressure-volume diagram shown in the illustration MO-0035 represents the operation of a diesel engine. In a diesel engine, fuel injection occurs at the point of maximum compression, which corresponds to point c in the diagram. This is where the piston reaches top dead center and the air inside the cylinder is at its highest pressure and temperature, allowing for efficient combustion of the injected fuel. The other answer choices are incorrect because they do not represent the point of fuel injection in a diesel engine pressure-volume diagram. Option A (e) and B (f) occur at different stages of the engine cycle, while option D (d) represents a different event, such as the opening of the exhaust valve.