Labels:text | screenshot | font | black and white OCR: Diesel knock is particularly noticeable after a cold start. This problem is gradually being overcome by modification of the combustion area in the cylinder head and piston as diesels become more popular in automobiles. An unavoidable side effect of the diesel's high part and no load efficiency is that the amount of engine braking available s reduced compared to the gas engine. This is part of the reason that many diesel trucks have retarders for sustained braking. Retarders use the engine for braking by modification of the value timing in order to make the engine act as an air pump, thus absorbing energy. It should be noted that a disadvantage of diesel engines, is that they requires relatively high quality fuels, and sophisticated fuel filtering systems are required, both at the delivery ...
