Caterpillar Inc.

Caterpillar Inc. Joint Oc

Vikas Bhupendra Sheth

Nataraj Srinivasan

Matthew Thomas Wolk

Thomas L Atwell

Jeremy Ross Conyers

Yong Yi

Tejashree Nanasaheb Shirke

Parthiban Pechiyannan

Kishore Bandaru

Pradeep Venugopal

Khaja Mohiuddin

Matthew Wolk

Matthew T Wolk

An exhaust structure for an exhaust manifold associated with an engine includes a first inlet section that defines a first inlet flow passage configured to receive exhaust gas, the first inlet flow passage defining a normalized cross-sectional area of flow, a second inlet section that defines a second inlet flow passage configured to receive exhaust gas, the second inlet flow passage defining the normalized cross-sectional area of flow, and an intermediate section disposed between the first inlet section and the second inlet section and in fluid communication with each of the first inlet section and the second inlet section, the intermediate section including: a flange and an exhaust redirection section having a reduced cross-sectional flow path measured at a midpoint along a length of the flange that is less than the normalized cross-sectional area of flow of the first inlet flow passage.

Exhaust structure for exhaust manifold

An exhaust structure for an exhaust manifold includes a body including a first inlet section configured to receive exhaust gas, a second inlet section configured to receive exhaust gas, and an outlet section disposed in fluid communication with each of the first inlet section and the second inlet section to receive exhaust gas, wherein exhaust gas from the first inlet section and the second inlet section exit the exhaust structure through the outlet section, and wherein the outlet section includes a flange. The body may include a rib extending generally along the longitudinal axis and disposed on a surface of the outlet section, the rib including a first section having a first inclined surface, a second section spaced from the first section and having a second inclined surface, and a third section disposed between the first section and the second section, the third section having a curved surface.

Exhaust structure having rib

Exhaust gas recirculation tube

A turbine connector () in an engine exhaust manifold () includes a turbine foot () attached to incoming exhaust conduits (). The turbine foot () has an outer perimetric edge () defining a trapezoidal shape, and inner perimetric edges () forming exhaust outlets () from the incoming exhaust conduits (). The inner perimetric edges () have varied perimetric curvatures largest in finite curvature size upon a web () extending between the exhaust outlets (), and together forming an hourglass web profile in a turbine-mounting plane defined by the turbine foot ().

Exhaust manifold having turbine connector with turbine foot

A turbine connector in an engine exhaust manifold includes a turbine foot attached to incoming exhaust conduits. The turbine foot has an outer perimetric edge defining a trapezoidal shape, and inner perimetric edges forming exhaust outlets from the incoming exhaust conduits. The inner perimetric edges have varied perimetric curvatures largest in finite curvature size upon a web extending between the exhaust outlets, and together forming an hourglass web profile in a turbine-mounting plane defined by the turbine foot.

An exhaust system for an internal combustion engine includes an exhaust pipe, and a vane mixer attached to an upstream pipe end of the exhaust pipe and including a fluid injector mount, and a fluid injection side port in the injector mount and fluidly connected to an exhaust passage in the vane mixer. The vane mixer further includes a vane extending across the exhaust passage and dividing the exhaust passage into a major flow area and a minor flow area. The minor flow area is in overlapping angular alignment, circumferentially around a longitudinal exhaust passage axis, with the fluid injection side port.

Vane mixer in engine exhaust system

A turbocharger having a turbine housing including an outer surface and an inner surface defining an exhaust passage, an exhaust inlet port in fluid communication with the exhaust passage, and a tucked exhaust inlet flange surrounding the exhaust inlet port, the exhaust inlet flange including a plurality of bolt holes arranged in a trapezoid shaped bolt pattern.

Growing community of inventors

Edwards, IL, United States of America

Vikas Bhupendra Sheth