CROSS-REFERENCE TO RELATED APPLICATION(S)

Not applicable.

STATEMENT OF FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

FIELD OF THE DISCLOSURE

This disclosure generally relates to work vehicles, and more specifically to power and exhaust systems and methods for a work vehicle.

BACKGROUND OF THE DISCLOSURE

Heavy work vehicles, such as used in the construction, agriculture and forestry industries, typically include a power system with an internal combustion engine in the form of a compression ignition engine (i.e., diesel engine) or a spark ignition engine (i.e., gasoline engine). For many heavy work vehicles, the power system includes a diesel engine that may have higher lugging, pull-down, and torque characteristics for associated work operations. A portion of the exhaust may be redirected back into the engine in an exhaust recirculation arrangement while the remaining exhaust is directed into an exhaust treatment system and out of the vehicle.

SUMMARY OF THE DISCLOSURE

The disclosure provides an integrated exhaust system apparatus for a power system of a work vehicle.

In one aspect, the disclosure provides an integrated exhaust system apparatus configured to be mounted on an engine generating an exhaust. The apparatus includes an apparatus housing including at least one apparatus housing wall defining an apparatus interior; an engine interface positioned in the at least one apparatus housing wall with at least one exhaust apparatus inlet configured to direct the exhaust from the engine through the at least one apparatus housing wall into the apparatus interior; an exhaust system interface positioned in the at least one apparatus housing wall with at least one first exhaust apparatus outlet configured to direct a first portion of the exhaust from the apparatus interior through the at least one apparatus housing wall; an EGR (exhaust gas recirculation) interface positioned in the at least one apparatus housing wall with at least one second exhaust apparatus outlet configured to direct a second portion of the exhaust from the apparatus interior through the at least one apparatus housing wall; and an exhaust manifold arranged within the apparatus interior proximate to the at least one exhaust apparatus inlet. The exhaust manifold includes a manifold wall defining a manifold interior configured to receive the exhaust from the at least one exhaust apparatus inlet, a first manifold outlet positioned within the manifold wall and configured to direct the first portion of the exhaust out of the manifold interior, wherein the first manifold outlet is fluidly coupled to the at least one first exhaust apparatus outlet, and a second manifold outlet within the manifold wall and configured to direct the second portion of the exhaust out of the manifold interior. The apparatus further includes an EGR cooler arranged within the apparatus interior and including a plurality of EGR cooler exhaust passages with first EGR cooler exhaust passage ends fluidly coupled such that the EGR cooler exhaust passages receive the second portion of the exhaust and second EGR cooler exhaust passage ends fluidly coupled such that the second portion of the exhaust is directed out of the EGR cooler exhaust passages to be directed out of the apparatus housing via the at least one second exhaust apparatus outlet.

In another aspect, the disclosure provides an engine arrangement includes an engine configured to generate exhaust and an integrated exhaust system apparatus mounted to the engine. The apparatus includes an apparatus housing including at least one apparatus housing wall defining an apparatus interior; an engine interface positioned in the at least one apparatus housing wall with at least one exhaust apparatus inlet configured to direct the exhaust from the engine through the at least one apparatus housing wall into the apparatus interior; an exhaust system interface positioned in the at least one apparatus housing wall with at least one first exhaust apparatus outlet configured to direct a first portion of the exhaust from the apparatus interior through the at least one apparatus housing wall; an EGR (exhaust gas recirculation) interface positioned in the at least one apparatus housing wall with at least one second exhaust apparatus outlet configured to direct a second portion of the exhaust from the apparatus interior through the at least one apparatus housing wall; an exhaust manifold arranged within the apparatus interior proximate to the at least one exhaust apparatus inlet, the exhaust manifold including a manifold wall defining a manifold interior configured to receive the exhaust from the at least one exhaust apparatus inlet, a first manifold outlet positioned within the manifold wall and configured to direct the first portion of the exhaust out of the manifold interior, wherein the first manifold outlet is fluidly coupled to the at least one first exhaust apparatus outlet, and a second manifold outlet within the manifold wall and configured to direct the second portion of the exhaust out of the manifold interior; and an EGR cooler arranged within the apparatus interior and including a plurality of EGR cooler exhaust passages with first EGR cooler exhaust passage ends fluidly coupled such that the EGR cooler exhaust passages receive the second portion of the exhaust and second EGR cooler exhaust passage ends fluidly coupled such that the second portion of the exhaust is directed out of the EGR cooler exhaust passages to be directed out of the apparatus housing via the at least one second exhaust apparatus outlet. The engine arrangement further includes a first turbocharger mounted to the integrated exhaust system apparatus and fluidly coupled to the at least one first exhaust apparatus outlet to receive the first portion of the exhaust and an EGR system extending between the at least one second exhaust apparatus outlet and the engine to direct the second portion of the exhaust from the integrated exhaust system apparatus to the engine.

The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features and advantages will become apparent from the description, the drawings, and the claims.

