Patent ID: 7160519
Filing Date: 2007-01-09
Classification: F01N

Abstract:
1. A serviceable exhaust aftertreatment device for exhaust flowing axially along an axial flowpath from upstream to downstream, comprising an inlet cylindrical body providing an inlet section, a central cylindrical body providing an exhaust aftertreatment central section and an outlet cylindrical body providing an outlet section, said cylindrical bodies being axially colinearly aligned along said axis, with said central cylindrical body being axially between said inlet and outlet cylindrical bodies and removable therefrom for servicing, said inlet cylindrical body having distally opposite upstream and downstream axial ends, said central cylindrical body having distally opposite upstream and downstream axial ends, said outlet cylindrical body having distally opposite upstream and downstream axial ends, said downstream end of said inlet cylindrical body engaging said upstream end of said central cylindrical body in axial sliding telescoped relation, said downstream end of said central cylindrical body engaging said upstream end of said outlet cylindrical body in axial sliding telescoped relation, such that said exhaust aftertreatment device is serviced by axially sliding said inlet and central cylindrical bodies away from each other and axially sliding said central and outlet cylindrical bodies away from each other, wherein said inlet cylindrical body has an inlet pipe extending axially in a first axial direction therefrom from said upstream axial end thereof, said outlet cylindrical body has an outlet pipe extending axially in a second direction therefrom from said downstream axial end thereof, said first and second axial directions being opposite to each other, said inlet cylindrical body defines an axially extending inlet plenum therealong along an axially extending sidewall, said axially extending sidewall of said inlet cylindrical body extends axially between said distally opposite upstream and downstream axial ends of said inlet cylindrical body, said inlet plenum extends axially between said inlet pipe and said upstream axial end of said central cylindrical body, said outlet cylindrical body defines an axially extending outlet plenum therealong along an axially extending sidewall, said axially extending sidewall of said outlet cylindrical body extends axially between said distally opposite upstream and downstream ends of said outlet cylindrical body, said outlet plenum extends axially between said downstream axial end of said central cylindrical body and said outlet pipe.