The basic fuel system, common to all Cat diesel engines, includes an engine driven fuel transfer pump, a secondary fuel filter, unit fuel injectors and a fuel pressure regulator. Optional Caterpillar supplied fuel system components include flexible hoses, a manual fuel priming pump, and a duplex primary fuel strainer. A basic fuel system schematic is… Read More »
The fuel system on a diesel engine is a highly specialized set of components which must deliver the correct amount of fuel to the cylinder at the precise moment it is needed. A well-designed fuel system enables the engine to produce maximum power at maximum efficiency with a minimum of exhaust emissions. Today’s diesel injectors… Read More »
Fuel should always be selected based on the requirements set forth in the Engine specific Operation and Maintenance Manual. The information and charts below are for reference only. The fuels recommended for use in Cat diesel engines are normally No. 2-D diesel fuel and No. 2 fuel oil, although No. 1 grades are also acceptable.… Read More »
The following information describes the basic fuel characteristics and their relation to engine performance. – Cetane Number: Index of ignition quality determined by comparing with fuels used as standards for high and low cetane numbers. The higher the cetane number is the shorter the ignition delay period which affects warm-up, combustion, cold start and exhaust… Read More »
Crude Oil The term crude oil is used to describe petroleum-based oils/fuels that are not yet refined. They are essentially in the same state as when they were pumped from the earth. Certain types of crude oils can be burned in Cat engines. In some cases, crude oil is a practical and economical fuel for… Read More »
A variety of fuel oils, also known as middle distillates, is marketed for use in diesel engines. Their properties and performance depend upon the refining practices employed and the nature of the crude oils from which they are produced. Because of constituents in the oil, some crude oils are naturally suited for refinement into high-grade… Read More »