Wastegate

A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger. One advantage of installing a remote mount wastegate to a free-float (or non-WG) turbo includes allowance for a smaller A/R turbine housing, resulting in less lag time before the turbo begins to spool and create boost.

Read more about WastegateAtmospheric/divorced Wastegates, Wastegate Chatter Myth, Wastegate Sizing

Other articles related to "wastegate":

Wastegate Sizing
... Wastegate sizing is inversely proportionate to the desired level of boost and is somewhat independent of the size or power of the engine ... One vendor's guide for wastegate sizing is as follows big turbo/low boost = bigger wastegate big turbo/high boost = smaller wastegate small turbo/low boost = bigger wastegate small turbo/high boost ... big turbo/small engine/small power = small wastegate big turbo/big engine/ small power = medium wastegate big turbo/small engine/big power = big wastegate small turbo/small engine/small ...
Howmet TX - Development - Turbine
... pipe was situated off-center for use with a wastegate ... The wastegate was designed to eliminate the lag between the driver pressing the accelerator and the turbine increasing its revolutions ... Once the turbine was at its maximum revolutions, the wastegate helped regulate the amount of fuel actually entering the turbine, thus increasing or ...
Boost Controller - Electronic Boost Control - Limitations and Disadvantages
... controller, actuator springs that are too soft can cause the wastegate to open before desired ... Exhaust gas backpressure is still pushing against the wastegate valve itself ... common failure mode (probably non-energized position) the boost control falls back to simple wastegate actuator boost levels ...
Boost Controller - Electronic Boost Control
... a manual controller is present, which is to control the air pressure presented to the wastegate actuator ... Either can achieve the goal of reducing pressure pushing against the wastegate ... is allowed to pass out of the control lines, reducing the load on the wastegate actuator ...
Additional Technologies Commonly Used in Turbocharger Installations - Wastegate
... See Main Article Wastegate Many turbochargers use a basic wastegate, which allows smaller turbochargers to reduce turbo lag ... A wastegate regulates the flow that enters the turbine and therefore the air intake into the manifold and the degree of boosting ...