Electric Excavator Turbocharger 11423397 452164 - 0016 For D12D Engine

11423397 Excavator Turbocharger Engine D12D Excavator Part 452164 - 0016

Specifiion

Description

By comparison, a turbocharger does not place a direct mechanical load on the engine, although turbochargers place exhaust back pressure on engines, increasing pumping losses.[20] This is more efficient because while the increased back pressure taxes the piston exhaust stroke, much of the energy driving the turbine is provided by the still-expanding exhaust gas that would otherwise be wasted as heat through the tailpipe. In contrast to supercharging, the primary disadvantage of turbocharging is what is referred to as "lag" or "spool time". This is the time between the demand for an increase in power (the throttle being opened) and the turbocharger(s) providing increased intake pressure, and hence increased power.

Throttle lag occurs because turbochargers rely on the buildup of exhaust gas pressure to drive the turbine. In variable output systems such as automobile engines, exhaust gas pressure at idle, low engine speeds, or low throttle is usually insufficient to drive the turbine. Only when the engine reaches sufficient speed (rpm) does the turbine section start to spool up, or spin fast enough to produce intake pressure above atmospheric pressure.

Characteristic

1.Decreasing the volume of the upper-deck piping

2.Using multiple turbochargers sequentially or in parallel

3.Using an antilag system

4.Using a turbocharger spool valve to increase exhaust gas flow speed to the (twin-scroll) turbine

5.Using a butterfly valve to force exhaust gas through a smaller passage in the turbo inlet

Related Volvo Parts Turbocharger We Can Supply