Exhaust structure having rib

An exhaust manifold associated with an engine, the exhaust manifold extending along a longitudinal axis, the exhaust manifold comprising:

• an exhaust structure including:
• a body including:
• a first inlet section configured to be in fluid communication with a first set of cylinders of the engine to receive exhaust gas therefrom;
• a second inlet section configured to be in fluid communication with a second set of cylinders of the engine to receive exhaust gas therefrom;
• an outlet section disposed between the first inlet section and the second inlet section;
• a flange in the outlet section;
• and
• a rib disposed on an outer surface of the outlet section, the rib including:
• a first inclined surface;
• a second inclined surface;
• and
• a curved surface extending between the first inclined surface and the second inclined surface, wherein the curved surface is directly connected to each of the first inclined surface and the second inclined surface, thereby connecting the first inclined surface to the second inclined surface;
• a first manifold portion extending along the longitudinal axis and arranged to receive exhaust gas from at least one cylinder of the first set of cylinders;
• and
• a second manifold portion extending along the longitudinal axis and arranged to receive exhaust gas from at least one cylinder of the second set of cylinders.

An engine system comprising:

• an engine having a first set of cylinders and a second set of cylinders;
• an exhaust manifold in fluid communication with the engine, the exhaust manifold extending along a longitudinal axis, the exhaust manifold including:
• an exhaust structure including:
• a body including:
• a first inlet section arranged at a first end of the exhaust structure, wherein the first inlet section is in fluid communication with the first set of cylinders of the engine to receive exhaust gas therefrom;
• a second inlet section arranged at a second, opposite end of the exhaust structure, wherein the second inlet section is in fluid communication with the second set of cylinders of the engine to receive exhaust gas therefrom;
• 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 both 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;
• and
• a rib extending along the longitudinal axis and disposed on a surface of the outlet section, wherein the rib includes:
• 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 including a concave surface, wherein the concave surface extends to each of the first inclined surface and the second inclined surface, thereby connecting the first inclined surface to the second inclined surface;
• a first manifold portion extending along the longitudinal axis and arranged to receive exhaust gas from at least one cylinder of the first set of cylinders;
• and
• a second manifold portion extending along the longitudinal axis and arranged to receive exhaust gas from at least one cylinder of the second set of cylinders;
• and
• a turbocharger disposed in fluid communication with the exhaust structure, wherein the turbocharger is secured to the exhaust structure at the flange of the outlet section.