Patent ID: 8776504

Claim:
An exhaust treatment system for a vehicle that includes an internal combustion engine and a turbocharger having a compressor driven by an energy supply member, the exhaust treatment system comprising: an intake conduit adapted to receive pressurized intake air provided from the turbocharger compressor and supply the pressurized intake air to the internal combustion engine; a bypass conduit bypassing the internal combustion engine and including an upstream end in communication with the intake conduit; a bypass valve positioned within the bypass conduit to change the flow of compressed intake air through the bypass conduit; a mixing tube including upstream and downstream ends; an exhaust conduit having an upstream end adapted to receive exhaust from the internal combustion engine and a downstream end, wherein the exhaust conduit is adapted to receive the energy supply member at a location between the upstream and downstream ends, the downstream end of the exhaust conduit and a downstream end of the bypass conduit being joined together at the upstream end of the mixing tube, wherein the exhaust and pressurized intake air are mixed within the mixing tube; a burner coupled to the downstream end of the mixing tube to heat the mixed exhaust and pressurized intake air; an exhaust treatment device in receipt of a heated mixture of exhaust and pressurized intake air supplied from the burner; and a controller that changes a configuration of the bypass valve to selectively change flow through the bypass conduit wherein the controller changes the configuration of the bypass valve between a partially closed position and an open position so that flow through the bypass conduit is continuous.