Abstract: A gas seal for a pipe joint in an exhaust system configured to receive an exhaust gas flow from internal combustion (IC) engine includes a seal element. The seal element includes an outer surface and an inner surface arranged concentrically about a first axis. The outer surface is configured to seal against a pipe of the exhaust system. The gas seal also includes a flow-guide element fixed to the seal element at the inner surface of the seal element. The flow-guide element defines an aperture having a shape configured to direct and focus the exhaust gas flow away from the first axis. An exhaust system and a vehicle having such a gas seal are also disclosed.

Abstract: An exhaust system for a vehicle includes a catalytic converter, an exhaust manifold, an outlet sensor in addition to inlet and outlet pipes. The catalytic converter defines an inlet and an outlet. The exhaust manifold may be operatively configured to couple at least one vehicle combustion chamber to the inlet of the catalytic converter via the inlet pipe. The outlet pipe includes an internal portion and external portion. The outlet pipe may be affixed to the outlet of the catalytic converter. The internal portion of the outlet pipe defines at least one aperture upstream of the outlet sensor.

Abstract: A gas seal for a pipe joint in an exhaust system configured to receive an exhaust gas flow from internal combustion (IC) engine includes a seal element. The seal element includes an outer surface and an inner surface arranged concentrically about a first axis. The outer surface is configured to seal against a pipe of the exhaust system. The gas seal also includes a flow-guide element fixed to the seal element at the inner surface of the seal element. The flow-guide element defines an aperture having a shape configured to direct and focus the exhaust gas flow away from the first axis. An exhaust system and a vehicle having such a gas seal are also disclosed.