Turbocharger system with turbine bypass circuit to reduce emissions during engine cold start

Patent · Tue Sep 27 04:00:00 EDT 2022

OSTI ID:1925145

Plagens, Keith Michael; Boyer, Bradley Alan; McConville, Gregory Patrick; Zhang, Xiaogang; Polley, Thomas; Curtis, Eric Warren

An engine system includes an engine having first and second exhaust manifolds each having outlet ports and a bypass runner. A first turbocharger is in fluid communication with the outlet port of the first manifold, and a second turbocharger in fluid communication with the outlet port of the second manifold. An exhaust aftertreatment device is in fluid communication with the first and second turbochargers. A turbocharger bypass circuit includes a valve assembly having an inlet side connected in fluid communication with the bypass runners of the first and second manifolds, an outlet side in fluid communication with the aftertreatment device, and a valve having an open position in which the inlet and outlet sides are in fluid communication and a closed position in which the inlet and outlet sides are not in fluid communication.

• Research Organization: Ford Motor Company, Dearborn, MI (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EE0008878
• Assignee: Ford Global Technologies, LLC (Dearborn, MI)
• Patent Number(s): 11,454,163
• Application Number: 17/226,757
• OSTI ID: 1925145
• Country of Publication: United States
• Language: English