Abstract: Systems are provided for EGR mass and air mass estimation during steady state and transient operations. By utilizing a combination sensor comprising of a manifold absolute pressure sensing element and a differential pressure sensing element sharing a common pressure chamber with connections to the intake manifold, errors in EGR mass estimation may be reduced.

Abstract: An approach for controlling a turbocharger bypass valve is disclosed. In one example, the turbocharger bypass valve is opened during engine cold start conditions to reduce turbocharger speed. The approach may reduce noise produced by the turbocharger during engine start and warm-up.

Abstract: Systems are provided for EGR mass and air mass estimation during steady state and transient operations. By utilizing a combination sensor comprising of a manifold absolute pressure sensing element and a differential pressure sensing element sharing a common pressure chamber with connections to the intake manifold, errors in EGR mass estimation may be reduced.

Abstract: A central turbocharger configuration in a V-engine with two turbochargers is described. In one example approach, a V-engine includes first and second in-board exhaust manifolds; first and second turbines coupled to the first and second manifolds, respectively; and a passage intermediate to and coupling outlets of the first and second turbines; and a junction branching from the passage downward into the valley.

Abstract: An approach for controlling a turbocharger bypass valve is disclosed. In one example, the turbocharger bypass valve is opened during engine cold start conditions to reduce turbocharger speed. The approach may reduce noise produced by the turbocharger during engine start and warm-up.

Abstract: A valve in an engine exhaust system is disclosed. The valve can improve engine operation and reduce engine component degradation during cold engine starting. The valve may also be configured to provide different levels of restriction to exhaust gases flowing to a turbocharger turbine.

Abstract: A valve in an engine exhaust system is disclosed. The valve can improve engine operation and reduce engine component degradation during cold engine starting. The valve may also be configured to provide different levels of restriction to exhaust gases flowing to a turbocharger turbine.

Abstract: The following description relates to a central turbocharger configuration in a V-engine with two turbochargers. In one example approach, A V-engine having a first and second bank forming a valley therebetween, comprises: first and second in-board exhaust manifolds on the first and second banks, respectively; first and second turbines coupled to the first and second manifolds, respectively; the first and second turbines between the first and second exhaust manifolds; a passage intermediate to and coupling outlets of the first and second turbines; and a junction branching from the passage downward into the valley.

Abstract: An internal combustion engine includes a number of power cylinders furnishing exhaust gases to at least two turbochargers having a common air inlet housing which is divided into a separate compressor housing for each of the turbochargers.

Abstract: An internal combustion engine includes a number of power cylinders furnishing exhaust gases to at least two turbochargers having a common air inlet housing which is divided into a separate compressor housing for each of the turbochargers.

Abstract: A shoe assembly for a micro-finishing machine for finishing a workpiece includes a C-frame structure adapted for nonrotatable mounting to the micro-finishing machine. The C-frame assembly includes a pair of slats and a replaceable insert secured nonrotatably to the C-frame assembly.