Abstract: A valve assembly comprises a rotatable valve, an electrically operated actuator, and an overstroke device. The actuator comprises a component configured to move in a direction to an actuator position so as to cause corresponding rotation of the valve to a valve position in response to electrical operation of the actuator. The overstroke device is configured to enable the component to move in the direction beyond the actuator position to an overstroke position while the valve remains in the valve position in response to electrical operation of the actuator.

Abstract: A valve assembly comprises a rotatable valve, an electrically operated actuator, and an overstroke device. The actuator comprises a component configured to move in a direction to an actuator position so as to cause corresponding rotation of the valve to a valve position in response to electrical operation of the actuator. The overstroke device is configured to enable the component to move in the direction beyond the actuator position to an overstroke position while the valve remains in the valve position in response to electrical operation of the actuator.

Abstract: An apparatus comprises a reciprocating or Wankel engine, an exhaust gas passageway fluidly coupled to the engine, and a fuel-fired burner. The burner is positioned in the exhaust gas passageway and comprises a swirler configured to swirl exhaust gas of the engine so as to stabilize in the exhaust gas passageway a flame generated by the burner without use of supplemental combustion air when the engine is operating above idle. An associated method is disclosed.

Abstract: An exhaust system for use with an engine comprises at least one valve and a camshaft. The at least one valve is configured to control flow in the exhaust system but is discrete from each intake valve of the engine and each exhaust valve of the engine. The camshaft is configured to operate the at least one valve. An associated method is disclosed.

Abstract: A valve assembly comprises a rotatable valve, an electrically operated actuator, and an overstroke device. The actuator comprises a component configured to move in a direction to an actuator position so as to cause corresponding rotation of the valve to a valve position in response to electrical operation of the actuator. The overstroke device is configured to enable the component to move in the direction beyond the actuator position to an overstroke position while the valve remains in the valve position in response to electrical operation of the actuator. An associated method is disclosed.

Abstract: An apparatus comprises a reciprocating or Wankel engine, an exhaust gas passageway fluidly coupled to the engine, and a fuel-fired burner. The burner is positioned in the exhaust gas passageway and comprises a swirler configured to swirl exhaust gas of the engine so as to stabilize in the exhaust gas passageway a flame generated by the burner without use of supplemental combustion air when the engine is operating above idle. An associated method is disclosed.

Abstract: A powertrain control system is provided that includes an engine having multiple cylinders. A controller selectively activates the cylinders to provide a cylinder combination having a desired power displacement. In one example powertrain control system, the controller selectively activates the cylinders between a V-8 and V-4 mode. An exhaust system having a valve and an electrical actuator selectively electrically actuates the valve in response to the controller between multiple positions. The electrical actuator moves the valve from an open position in V-8 mode to a partially closed position in V-4 mode to increase back pressure and reduce NVH issues in V-4 mode. A muffler includes a housing having an exhaust passage. The valve is supported by the housing and arranged in the exhaust passage. The valve is moveable between multiple positions for tuning the muffler. The electrical actuator is supported by the housing to actuate the valve between the multiple positions.

Abstract: An exhaust system for a motor vehicle having a variable displacement engine includes an exhaust valve assembly that is moveable between an open position and a position blocking at least some of the exhaust gases. The blocking of some the exhaust gases increases backpressure that reflects sound waves. The reflection of sound waves provides for the conditioning of noises eminating from the exhaust system. The exhaust valve assembly utilizes an electric actuator. The exhaust valve assembly includes heat insulation features for isolating the electric actuator from heat radiating from the exhaust pipe.

Abstract: An exhaust processor includes a soot filter and a filter regenerator. The filter regenerator is configured to burn off particulate matter collected in the soot filter to regenerate the soot filter.

Abstract: An exhaust processor includes a soot filter and a filter regenerator. The filter regenerator is configured to burn off particulate matter collected in the soot filter to regenerate the soot filter.

Abstract: An exhaust processor includes a soot filter and a filter regenerator. The filter regenerator is configured to burn off particulate matter collected in the soot filter to regenerate the soot filter.