Power plants – Internal combustion engine with treatment or handling of... – Divider – collector – valve means – or boundary layer device...
Reexamination Certificate
2006-10-17
2006-10-17
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Divider, collector, valve means, or boundary layer device...
C060S287000, C060S291000, C060S292000, C060S313000, C137S595000, C137S607000, C137S862000
Reexamination Certificate
active
07121088
ABSTRACT:
A valve assembly is adapted to be disposed in an automotive engine exhaust system at an outlet of an internal combustion engine. The assembly includes a valve body having an opening therethrough including an inlet portion and an outlet portion. A first valve and a second valve are disposed in the opening intermediate the inlet and outlet portions. The first and second valves have an open position and a closed position. The first valve blocks a first predetermined amount of the opening when in the closed position. The second valve blocks a second predetermined amount of the opening when in the closed position, with the second predetermined amount being less than the first predetermined amount. An actuator is connected to the first valve and the second valve and is operable to selectively move each of the valves between respective the open positions and the closed positions.
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General Motors Corporation
Hargitt Laura C.
Tran Binh Q.
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