Technician A says that overhead cam engines with unit injectors can provide the greatest actuation force for the highest injection pressures. Technician B says that pushrod engines that use a low-mounted camshaft can provide the same force as an overhead camshaft engine to its unit injectors. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because overhead cam engines can provide greater actuation force due to their direct action on the injectors, leading to higher injection pressures. Pushrod engines typically have more mechanical losses and cannot achieve the same force as overhead camshaft engines.

Technician a Says That Overhead Cam Engines with Unit Injectors