Exhaust aftertreatment packaging for a diesel genset
First Claim
1. An exhaust aftertreatment system for a diesel-powered genset, comprising:
- a support;
a diesel exhaust fluid (DEF) injection section, including;
a housing mounted to the support and having an inlet region, an outlet region, and a first diameter;
a stationary upstream mixer to increase turbulence of exhaust entering the inlet region;
a stationary downstream mixer to increase turbulence of the exhaust exiting the outlet region, wherein the downstream mixer includes;
a plurality of mixing blades; and
a baffle having a diameter substantially equal to or greater than a diameter defined by the portion of the downstream mixer having the mixing blades; and
a DEF injector to inject DEF into the turbulent exhaust between the upstream and downstream mixers; and
a selective catalyst reduction (SCR) section, including;
a housing mounted to the support and having an inlet region coupled to the outlet region of the DEF injection section, an outlet region, and a second diameter that is larger than the first diameter of the DEF injection section housing; and
an SCR catalyst mounted in the housing, wherein the SCR catalyst has a diameter that is greater than the first diameter of the DEF injection section housing.
1 Assignment
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Accused Products
Abstract
An exhaust aftertreatment system for a diesel-powered genset includes a Diesel Exhaust Fluid (DEF) injection system, a housing, a Selective Catalyst Reduction (SCR) section disposed within the housing and a support configured to support the exhaust aftertreatment system. The DEF injection system includes a housing having an inlet region and an outlet region. A stationary upstream mixer increases turbulence of exhaust entering the inlet region. A stationary downstream mixer increases turbulence of exhaust exiting the outlet region. The DEF injection system includes a DEF injector. The SCR section includes a housing having an inlet and outlet, an SCR catalyst mounted in the housing, and a diameter that is greater than a diameter of the DEF injection section housing. A Diesel Particulate Filter (DPF) section can be disposed within the housing between the DEF injection section and the SCR section.
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Citations
20 Claims
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1. An exhaust aftertreatment system for a diesel-powered genset, comprising:
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a support; a diesel exhaust fluid (DEF) injection section, including; a housing mounted to the support and having an inlet region, an outlet region, and a first diameter; a stationary upstream mixer to increase turbulence of exhaust entering the inlet region; a stationary downstream mixer to increase turbulence of the exhaust exiting the outlet region, wherein the downstream mixer includes; a plurality of mixing blades; and a baffle having a diameter substantially equal to or greater than a diameter defined by the portion of the downstream mixer having the mixing blades; and a DEF injector to inject DEF into the turbulent exhaust between the upstream and downstream mixers; and a selective catalyst reduction (SCR) section, including; a housing mounted to the support and having an inlet region coupled to the outlet region of the DEF injection section, an outlet region, and a second diameter that is larger than the first diameter of the DEF injection section housing; and an SCR catalyst mounted in the housing, wherein the SCR catalyst has a diameter that is greater than the first diameter of the DEF injection section housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20)
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- 12. The exhaust aftertreatment system of claim wherein at least a portion of the downstream mixer is in the SCR section housing including the baffle and at least a portion of the plurality of mixing blades.
Specification