Patent ID: 9175783
Filing Date: 2015-11-03
Classification: F02B,F16K,Y02T

Abstract:
1. A method, comprising: providing an output of a sensor to a controller; when boost pressure based on the output is below a threshold, generating vacuum via a first ejector by operating an actuator in a first position and flowing air from a compressor outlet to an intake manifold through the first ejector via the controller, the actuator coupled to the controller, wherein generating vacuum via the first ejector by operating the actuator in the first position further comprises opening a first valve and closing a second valve with the actuator via the controller in order to flow air through the first ejector; and when boost pressure based on the output is above the threshold, generating vacuum via a second ejector by operating the actuator in a second position and flowing air from the compressor outlet to a compressor inlet through the second ejector via the controller.