Boost controller: Difference between revisions

Revision as of 19:56, 18 October 2018

Revision as of 22:41, 21 January 2019

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Achieving moderate boost levels consistently is also troublesome with this configuration. At partial [[throttle]], full boost may still be reached, making the vehicle difficult to control with precision. Electronic systems can allow the throttle to control the level of boost, so that only at full throttle will maximum boost levels be achieved and intermediate levels of boost can be held consistently at partial throttle levels.

Also to be noted is the way in which boost control is achieved, depending on the type of wastegate used. Typically manual "bleed type" boost controllers are only used on swing type (single port) wastegate actuators. To increase boost, pressure is taken away from the actuator control line, therefore increasing boostthe turbo output pressure required to counteract the controllers leak-lowered pressure acting on the wastegate. Dual port swing type wastegate actuators and external wastegates generally require electronic boost control although adjustable boost control can also be achieved on both of these with an air pressure regulator, this is not the same as a bleed type boost controller. To increase boost with an external or dual port wastegate, pressure is added to the top control port to increase boost. When boost control is not fitted, this control port is open to the atmosphere.

== Manual boost control ==