Aftertreatment system with access panel

An aftertreatment system, comprising:

• a housing having an inlet, an outlet and a sidewall, the housing defining an internal volume structured to receive an exhaust gas via the inlet, the sidewall defining an access opening;
• an access panel operatively coupled to the sidewall and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• an injector positioned on the access panel, the injector removably coupled to the access panel via a coupling assembly, the injector in fluidic communication with the internal volume via the injection port;
• and
• a selective catalytic reduction system disposed in the internal volume, the selective catalytic reduction system including at least one catalyst formulated to decompose constituents of the exhaust gas;
• wherein the access panel defines a pair of threaded apertures therein, the pair of threaded apertures positioned opposite to each other along a periphery of the access panel.

An aftertreatment system, comprising:

• a housing having an inlet, an outlet and a sidewall, the housing defining an internal volume structured to receive an exhaust gas via the inlet, the sidewall defining an access opening;
• an access panel operatively coupled to the sidewall and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• an injector positioned on the access panel, the injector removably coupled to the access panel via a coupling assembly, the injector in fluidic communication with the internal volume via the injection port;
• and
• a selective catalytic reduction system disposed in the internal volume, the selective catalytic reduction system including at least one catalyst formulated to decompose constituents of the exhaust gas;
• wherein the housing further comprises a pin positioned on the sidewall, the pin extending orthogonally from the sidewall;
• and
• wherein a notch is defined along the periphery of the access panel, the notch aligned with the pin so as to prevent misalignment of the access panel.

An aftertreatment system, comprising:

• a housing having an inlet, an outlet and a sidewall, the housing defining an internal volume structured to receive an exhaust gas via the inlet, the sidewall defining an access opening;
• an access panel operatively coupled to the sidewall and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• an injector positioned on the access panel, the injector removably coupled to the access panel via a coupling assembly, the injector in fluidic communication with the internal volume via the injection port;
• and
• a selective catalytic reduction system disposed in the internal volume, the selective catalytic reduction system including at least one catalyst formulated to decompose constituents of the exhaust gas;
• wherein the access panel includes:
• a first portion defining a periphery of the access panel, the plurality of throughholes defined in the first portion, at least a portion of the first portion positioned on the sidewall;
• and
• a second portion positioned within the first portion, the second portion offset from the first portion so as to define a cavity, the second portion positioned within the access opening.

A housing for an aftertreatment system, comprising:

• an inlet structured to receive an exhaust gas;
• an internal volume defined by the housing and structured to house a selective catalytic reduction system, at least a portion of the internal volume structured to allow mixing of a reductant with the exhaust gas to form a mixture and communicate the mixture to the selective catalytic reduction system;
• a sidewall of the housing defining a recess, the recess including a base defining an access opening;
• an access panel operatively coupled to the base and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• an outlet structured to expel the exhaust gas out of the housing;
• and
• a pin positioned on the base, the pin extending orthogonally from the base;
• wherein a notch is defined along the periphery of the access panel, the notch aligned with the pin so as to prevent misalignment of the access panel.

A housing for an aftertreatment system, comprising:

• an inlet structured to receive an exhaust gas;
• an internal volume defined by the housing and structured to house a selective catalytic reduction system, at least a portion of the internal volume structured to allow mixing of a reductant with the exhaust gas to form a mixture and communicate the mixture to the selective catalytic reduction system;
• a sidewall of the housing defining a recess, the recess including a base defining an access opening;
• an access panel operatively coupled to the base and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• and
• an outlet structured to expel the exhaust gas out of the housing;
• wherein a sealing member is positioned between the sidewall and the access panel, the sealing member preventing the exhaust gas from exiting the internal volume via the access opening when the access panel is in a closed position.

A housing for an aftertreatment system, comprising:

• an inlet structured to receive an exhaust gas;
• an internal volume defined by the housing and structured to house a selective catalytic reduction system, at least a portion of the internal volume structured to allow mixing of a reductant with the exhaust gas to form a mixture and communicate the mixture to the selective catalytic reduction system;
• a sidewall of the housing defining a recess, the recess including a base defining an access opening;
• an access panel operatively coupled to the base and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• and
• an outlet structured to expel the exhaust gas out of the housing;
• wherein the access panel defines a pair of threaded apertures, the pair of threaded apertures positioned opposite to each other along a periphery of the access panel.

A housing for an aftertreatment system, comprising:

• an inlet structured to receive an exhaust gas;
• an internal volume defined by the housing and structured to house a selective catalytic reduction system, at least a portion of the internal volume structured to allow mixing of a reductant with the exhaust gas to form a mixture and communicate the mixture to the selective catalytic reduction system;
• a sidewall of the housing defining a recess, the recess including a base defining an access opening;
• an access panel operatively coupled to the base and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• and
• an outlet structured to expel the exhaust gas out of the housing;
• wherein the access panel includes:
• a first portion defining a periphery of the access panel, the plurality of throughholes defined in the first portion, at least a portion of the first portion positioned on the base around a rim of the access opening;
• and
• a second portion positioned within the first portion, the second portion offset from the first portion so as to define a cavity, the second portion positioned within the access opening.

A housing for an aftertreatment system, comprising:

• an inlet structured to receive an exhaust gas;
• an internal volume defined by the housing and structured to house a selective catalytic reduction system, at least a portion of the internal volume structured to allow mixing of a reductant with the exhaust gas to form a mixture and communicate the mixture to the selective catalytic reduction system;
• a sidewall of the housing defining a recess, the recess including a base defining an access opening;
• an access panel operatively coupled to the base and covering the access opening, the access panel defining:
• a plurality of throughholes, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• an injection port;
• and
• an outlet structured to expel the exhaust gas out of the housing;
• wherein a plurality of alignment features are defined on the second portion of the access panel, the plurality of alignment features configured to allow alignment and coupling of an injector to the access panel via a bracket included in a coupling assembly coupled to the injector.

An apparatus for decomposing constituents of an exhaust gas, comprising:

• a housing having an inlet, an outlet and a sidewall, the housing defining an internal volume structured to receive an exhaust gas via the inlet, the sidewall defining an access opening;
• an access panel operatively coupled to the sidewall and covering the access opening, the access panel including:
• a first portion defining a periphery of the access panel, at least a portion of the first portion positioned on the sidewall around a rim of the access opening, a plurality of throughholes defined in the first portion, each of the plurality of throughholes configured to receive a fastener therethrough for removably coupling the access panel to the sidewall, and
• a second portion positioned within the first portion, the second portion offset from the first portion so as to define a cavity, the second portion positioned within the access opening, the second portion defining an injection port;
• a catalyst assembly positioned within the internal volume, the catalyst assembly including at least one catalyst configured to decompose constituents of the exhaust gas;
• and
• an outlet structured to expel the treated exhaust gas out of the housing.