Patent ID: 7162861
Filing Date: 2007-01-16
Classification: F01N,F02B,Y02T

Abstract:
1. A method of controlling the air content input to an engine exhaust aftertreatment system, wherein the engine has an air-charging device having a volute and an integral output adjustment mechanism, comprising: diverting a portion of the charged air output from the volute of the air-charging device; delivering the portion to a point upstream of an exhaust emissions control device; diffusing the portion using a diffuser at the input to emissions control device; calculating an amount to adjust the operation of the air-charging device such that normal operation of the air-charging device not affected by the diverted portion; and increasing the output of the air-charging device to compensate for the diverted portion; wherein the adjusting step is performed using an adjustment mechanism integral to the air-charging device.