Methods and systems are provided for diagnostics of a gasoline particulate filter in an exhaust system. In one example, a method may include indicating degradation of a hose coupled across a particulate filter responsive to a difference between a first differential pressure and a second differential pressure being greater than a threshold, the first differential pressure measured by a differential pressure sensor positioned in the hose responsive to a downstream exhaust tuning valve being fully open, the second differential pressure measured by the differential pressure sensor responsive to the exhaust tuning valve being fully closed.

Methods and systems are provided for diagnostics of a gasoline particulate filter in an exhaust system. In one example, a method may include indicating degradation of a hose coupled across a particulate filter responsive to a difference between a first differential pressure and a second differential pressure being greater than a threshold, the first differential pressure measured by a differential pressure sensor positioned in the hose responsive to a downstream exhaust tuning valve being fully open, the second differential pressure measured by the differential pressure sensor responsive to the exhaust tuning valve being fully closed.

Apparatus for attenuating a sound level comprising an enclosure having an inlet and an outlet, where an exhaust flow director is positioned within the enclosure and fluidly coupled to the inlet and the outlet. The exhaust flow director comprises a plurality of overlapping vanes that directs the exhaust flow to attenuate the level of the sound produced by the exhaust.

An exhaust system includes a first aftertreatment substrate configured to receive exhaust gases from an engine and a second aftertreatment substrate downstream of the first aftertreatment substrate, wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate. A bypass valve is configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a predetermined temperature and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above the predetermined temperature.

An exhaust system includes a first aftertreatment substrate configured to receive exhaust gases from an engine and a second aftertreatment substrate downstream of the first aftertreatment substrate, wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate. A bypass valve is configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a predetermined temperature and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above the predetermined temperature.

An exhaust tailpipe/emissions filter employs a reusable/replaceable insert and is configured to slide into and/or onto the exhaust tailpipe of the automobile to reduce air pollution.

An exhaust tailpipe/emissions filter employs a reusable/replaceable insert and is configured to slide into and/or onto the exhaust tailpipe of the automobile to reduce air pollution.

The disclosure relates to a gasoline engine comprising an exhaust gas line which can be connected to an exhaust manifold of the gasoline engine, an intake line which can be connected to an intake manifold of the gasoline engine, a charge air compressor which is arranged in the intake line, and a turbine which is arranged in the exhaust gas line. The exhaust gas line has at least one bypass line with a bypass throttle valve, said line branching off from the exhaust gas line at a branch upstream of the turbine and branching back into the exhaust gas line at an opening downstream of the turbine. At least one exhaust gas recirculation line with an EGR throttle valve is provided, said line branching off from the exhaust gas line at a branch and opening into the intake line at an opening, wherein a coupling line with a first node point and a second node point is provided, the bypass line and the EGR line being combined in some sections in said coupling line; at least one particle filter is arranged in the coupling line; and the first node point is arranged downstream of the branch and downstream of the branch.

A device for the aftertreatment of exhaust gases of an internal combustion engine, with an exhaust gas line, which is configured to feed the exhaust gas expelled from the internal combustion engine to at least one component for exhaust gas aftertreatment. The at least one adsorber for the temporary storage of hydrocarbons contained in the exhaust gas, a catalytic converter for the catalytic aftertreatment of the exhaust gas, an electrically heatable catalytic converter and a cracking catalytic converter for cracking long-chain hydrocarbons into shorter-chain hydrocarbons are arranged in the exhaust gas line.

A device for the aftertreatment of exhaust gases of an internal combustion engine, with an exhaust gas line, which is configured to feed the exhaust gas expelled from the internal combustion engine to at least one component for exhaust gas aftertreatment. The at least one adsorber for the temporary storage of hydrocarbons contained in the exhaust gas, a catalytic converter for the catalytic aftertreatment of the exhaust gas, an electrically heatable catalytic converter and a cracking catalytic converter for cracking long-chain hydrocarbons into shorter-chain hydrocarbons are arranged in the exhaust gas line.