Abstract: A method for an engine may comprise during a first condition comprising decreased scavenging, adjusting fuel injection based on a more-upstream air-fuel ratio, and during a second condition comprising increased scavenging, adjusting fuel injection based on one or more more-downstream air-fuel ratios and not based on the more-upstream air-fuel ratio. During the first condition, adjusting fuel injection may be further based on the one or more more-downstream air-fuel ratios.

Abstract: A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turobocharged gasoline engine through a cylinder and into the exhaust system by a compressor. In this way, regeneration of a particulate filter may be accomplished without an auxiliary air supply.

Abstract: A manhole cover is made of a fiberglass reinforced saucer-like shell that is filled with concrete. The interior surface of the shell is rough and the shell has a maximum thickness of 5 mm. An adhesive agent may be provided between the base and the filling, to obtain a reliable bond between base and filling. The concrete for the filling may be pure mineral concrete. One or more lifting handles are embedded in the filling. To this end, a recess for each handle is formed in the filling. The ends of the handle are embedded in the concrete and the lifting portion of the handle is curved upward and is held in the recess such that there is a space between the curved portion and the bottom of the recess, so that the handle may be easily grasped.

Abstract: Methods and systems are provided to address engine pre-ignition. One or more cylinders are alternately rich and lean operated for a duration to reduce engine thermal loading while maintaining an exhaust air-to-fuel ratio around stoichiometry.

Abstract: A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine spark is controlled such that soot held by a particulate filter may be oxidized even during low engine loads.

Abstract: A system for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turbocharged gasoline engine to the exhaust system by a compressor. Simultaneously, exhaust gases may be pumped from the exhaust system to the intake system for the purpose of reducing NOx while regenerating a particulate filter.

Abstract: A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turbocharged gasoline engine to the exhaust system by a compressor. The oxygen is introduced to a particulate filter at a location upstream from the particulate filter and downstream of a three-way catalyst. The oxygen may be regulated in part by adjusting compressor boost pressure in response to a state of particulate filter regeneration. Further, in one embodiment, engine NOx can be controlled by EGR.

Abstract: A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turobocharged gasoline engine to the exhaust system by a compressor. The oxygen is introduced to a particulate filter at a location upstream from the particulate filter. In this way, regeneration of a particulate filter may be accomplished without disturbing the chemistry of a three-way catalyst located in the exhaust system upstream of the particulate filter.

Abstract: A manhole cover is made of a fiberglass reinforced saucer-like shell that is filled with concrete. The interior surface of the shell is rough and the shell has a maximum thickness of 5 mm. An adhesive agent may be provided between the base and the filling, to obtain a reliable bond between base and filling. The concrete for the filling may be pure mineral concrete. One or more lifting handles are embedded in the filling. To this end, a recess for each handle is formed in the filling. The ends of the handle are embedded in the concrete and the lifting portion of the handle is curved upward and is held in the recess such that there is a space between the curved portion and the bottom of the recess, so that the handle may be easily grasped.

Abstract: A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine cylinder air-fuel is adjusted to allow soot to oxidize at an upstream particulate filter while exhaust gases are efficiently processed in a downstream catalyst.

Abstract: A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine cylinder air-fuel is adjusted to allow soot to oxidize at an upstream particulate filter while exhaust gases are efficiently processed in a downstream catalyst.

Abstract: Embodiments for an exhaust gas aftertreatment device are provided. In one example, an exhaust gas aftertreatment device for a gasoline engine comprises a filter body with porous filter walls through which exhaust gas flows to remove soot, the porous filter walls containing a first catalyst material and having a coating of a second catalyst material on partial areas of the filter walls. In this way, a particulate filter and catalyst may be provided in a common aftertreatment device.

Abstract: Disclosed is a mounting bracket for mounting wall insulation to an exterior wall. The mounting bracket is a unitary piece constructed of plastic, having a vertical wall plate, a horizontal support plate that extends orthogonal to the wall plate, and a vertical reinforcing plate that extends orthogonal to the vertical wall plate and the horizontal support plate. A bore is provided in the wall plate, for fastening the mounting bracket to the exterior wall. The reinforcing plate extends beyond the length of the horizontal support plate, to provide a mounting flange that may be fastened to a vertical wall support, such as a roof batten. The area formed by the horizontal support plate and an upper portion of the wall plate provides an unobstructed support area for supporting the wall insulation.

Abstract: Methods and systems are provided to address engine pre-ignition. One or more cylinders are alternately rich and lean operated for a duration to reduce engine thermal loading while maintaining an exhaust air-to-fuel ratio around stoichiometry.

Abstract: A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine spark is controlled such that soot held by a particulate filter may be oxidized even during low engine loads.

Abstract: Methods and systems are provided for managing exhaust gases from an internal combustion engine are described. In one example system, hydrocarbons in engine exhaust gases may be stored during an engine cold start and later released into an intake manifold of the engine. The methods and systems may reduce engine hydrocarbon emissions.

Abstract: An exhaust system for an internal combustion engine is provided. The system comprises an exhaust tract which is connectable to an outlet side of the internal combustion engine, at least one catalytic converter arranged in the exhaust tract downstream of the engine, a particle filter downstream of the at least one catalytic converter, and a secondary-air inlet port provided in the exhaust tract upstream of the particle filter for introducing compressed secondary air into the exhaust tract via at least one flutter valve. In this way, additional oxygen may be supplied to the particulate filter to perform filter regeneration.

Abstract: Methods and systems are provided to address engine pre-ignition. One or more cylinders are alternately rich and lean operated for a duration to reduce engine thermal loading while maintaining an exhaust air-to-fuel ratio around stoichiometry.