Saturday, December 24, 2011

Supercharging and Turbocharging Details about Diesel Marine Aeronautical Engine

Turbocharger


Two Stroke Engine with Supercharger and Turbocharger
Supercharging and Turbocharging Details about Diesel Marine Aeronautical Engine

Most diesels are now turbocharged and some are both turbo charged and supercharged . Beacause diesels do not have fuel in the cylinder before combustion is initiated, more than one bar(100kPa) of air can be loaded in the cylinder without preignition . A turbocharged engine can produce signification more power than a natuarlly aspirated engine of the configuraton, as having more air in the cylinders allows more fuel to be burned and thus more to be produced.A supercharger in powered mechanically by the engine's crankshaft, while a turbocharger is powered by the engine exhaust, not requiring any mechanical power.
Turbocharging can improve the fuel economy of diesel engines by recomoving waste heat from the exhaust, increasing the excess air factor , and increasing the ratio of engine output to friction losses. A two-stroke engine does not have a discrete exhaust and intake stroke and thus is incapable of self-aspiration.Supercharged engines produce more power for a given engine size as compared to naturally aspireted engines, attention must be paid to the mechanical design of components, lubrication, and cooling to handle the power.

Therefore all two-stroke engines must be fitted with a blower to charge the cylinders with air and assist in dispersing exhaust gases, a process referred to as employ a hybrid turbocharged engine produce more power for a given engine size as compared to naturally aspirated engines, attention must be paid to the mechanical design of component and etc.Turbocharging can improve the fuel economy of diesel engines by recovering waste heat from the exhaust , increasing the excess air factor and increasing the ratio ot engine output to friction losses.

No comments:

Post a Comment