APPARATUS, SYSTEM, AND METHOD FOR TURBOCHARGER BYPASS AND EXHAUST BREAKING WITH A SINGLE VALVE
An apparatus, system, and method are disclosed for a single-actuated multi-function valve. In one embodiment, an apparatus (100) includes a primary fluid conduit (106), a secondary fluid conduit (114), and a valve (116). The primary fluid conduit extends from an exhaust manifold (104) to an outlet (108) through a high pressure turbocharger (110) and a low pressure turbocharger (112). The secondary fluid conduit extends from the exhaust manifold to the outlet through the low pressure turbocharger. The valve has two flow passages - the first flow passage (118) is a variable restriction within the primary fluid conduit, and the second flow passage (120) is a variable restriction within the secondary fluid conduit. Turning the valve one direction from a nominal position controls the flow ratios in the primary and secondary fluid conduits, while turning the valve in the other direction from the nominal position controls exhaust braking.