EC140B 20460945 Excavator Spare Parts 318281 Turbocharger OEM 04258199KZ

EC140B 20460945 Excavator Spare Parts 318281 Turbocharger OEM 04258199KZ

Specifiion

Description

Turbocharger lag (turbo lag) is the time required to change power output in response to a throttle change, noticed as a hesitation or slowed throttle response when accelerating as compared to a naturally aspirated engine. This is due to the time needed for the exhaust system and turbocharger to generate the required boost which can also be referred to as spooling. Inertia, friction, and compressor load are the primary contributors to turbocharger lag. Superchargers do not suffer this problem, because the turbine is eliminated due to the compressor being directly powered by the engine.

Turbocharger appliions can be egorized into those that require changes in output power (such as automotive) and those that do not (such as marine, aircraft, commercial automotive, industrial, engine-generators, and locomotives). While important to varying degrees, turbocharger lag is most problematic in appliions that require rapid changes in power output. Engine designs reduce lag in a number of ways.

Characteristic

1.Reducing bearing frictional losses, e.g., using a foil bearing rather than a conventional oil bearing
2.Using variable-nozzle or twin-scroll turbochargers
3.Decreasing the volume of the upper-deck piping
4.Using multiple turbochargers sequentially or in parallel
5.Using an antilag system

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