Patent application number | Description | Published |
20080236680 | PASSIVE VALVE FOR ATTENUATION OF LOW FREQUENCY NOISE - A passive valve assembly for an exhaust system is mounted within an exhaust tube. The exhaust tube has a bore that defines an exhaust flow path having a cross-sectional area. One end of the exhaust tube is to be connected to a first exhaust component and a second end of the exhaust tube is to be connected to a second exhaust component such that the exhaust tube forms a sole exhaust path between the first and the second exhaust components. The passive valve assembly includes a vane that is mounted within the bore, and which is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. When the vane is in the closed position, the vane covers 80% to 97% of the cross-sectional area. | 10-02-2008 |
20090126359 | PASSIVE VALVE WITH STOP PAD - A passive valve assembly for an exhaust component includes a vane that is positioned within an exhaust gas flow path. The vane is pivoted from a closed position to an open position in response to exhaust gas flow overcoming a biasing force. A stop is positioned within the exhaust component and cooperates with the vane to define a closed position for the vane. | 05-21-2009 |
20090319160 | ACTIVE EXHAUST VALVE CONTROL STRATEGY FOR IMPROVED FUEL CONSUMPTION - A control system for an exhaust valve and a method of actively controlling an exhaust valve includes monitoring at least a first engine characteristic, a second engine characteristic, and at least one additional noise determining characteristic. An exhaust valve position is then adjusted based on the first engine characteristic, the second engine characteristic, and the at least one additional noise determining characteristic to improve fuel economy without adversely affecting noise levels. | 12-24-2009 |
20100043398 | DUAL EXHAUST SYSTEM WITH INDEPENDENT VALVE CONTROL - A dual exhaust system includes a first exhaust component defining a first exhaust path and a second exhaust component defining a second exhaust path that is different from the first exhaust path. A first valve is associated with the first exhaust path and a second valve is associated with the second exhaust path. The first valve and second valve operate independently of each other to vary exhaust flow and provide sufficient noise control for varying applications. | 02-25-2010 |
20100192559 | PASSIVE VALVE ASSEMBLY WITH NEGATIVE START ANGLE - A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is positioned at an initial start position and is movable between a closed position to provide a minimum exhaust gas flow and an open position to provide a maximum exhaust gas flow. The start position is orientated at a negative angle relative to the closed position. | 08-05-2010 |
20100192560 | PASSIVE VALVE ASSEMBLY WITH NEGATIVE START ANGLE - A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is positioned at an initial start position and is movable between a closed position to provide a minimum exhaust gas flow and an open position to provide a maximum exhaust gas flow. The start position is orientated at a negative angle relative to the closed position. | 08-05-2010 |
20110005860 | EXHAUST COMPONENT WITH REDUCED PACK - A vehicle exhaust component provides comparable fully packed noise reduction capability without requiring a fully packed configuration. A pack is mounted within an internal cavity defined by an exhaust component body. A plurality of pack positions are defined within the internal cavity and at least one pack is positioned at a desired pack position to provide a desired noise reduction. | 01-13-2011 |
20110308560 | TEMPERATURE AND FLOW CONTROL OF EXHAUST GAS FOR THERMOELECTRIC UNITS - A vehicle exhaust system includes an exhaust pipe that provides heated exhaust gases to a thermoelectric unit as an input. A temperature control mechanism ensures that exhaust gas is directed into the thermoelectric unit only if the exhaust gas is within a specified temperature range. The thermoelectric unit transforms the exhaust gas heat into electrical power. | 12-22-2011 |
20120292128 | PLASTIC MUFFLER WITH HELMHOLTZ CHAMBER - A muffler for a vehicle exhaust system includes a plastic outer shell that defines an internal cavity. A metal pipe extends through the internal cavity from an inlet to an outlet. A Helmholtz chamber is formed within the plastic outer shell to attenuate a desired frequency. | 11-22-2012 |
20120297755 | MODULE, ASSEMBLY WITH MODULE, THERMOELECTRIC GENERATOR UNIT AND EXHAUST GAS CONDUIT DEVICE WITH GENERATOR UNIT - A thermoelectric module ( | 11-29-2012 |