Patent ID: 7231762
Filing Date: 2007-06-19
Classification: F01N

Abstract:
1. An exhaust header for collecting exhaust gases from an internal combustion engine, the exhaust header comprising: a plurality of flanges, each having a recessed sealing surface that is configured to circumscribe an exhaust port on an internal combustion engine, wherein the recessed sealing surface is configured so as to support therein a gasket in a manner such that at least a portion of the gasket is exposed to gas flowing out the exhaust port; a web connecting at least two of the plurality of flanges; a plurality of gaskets comprising graphite, each located in the recessed sealing surface and configured to form separate seals between each flange and the engine around the exhaust port; a plurality of head pipes in flow communication with the plurality of flanges and configured to route exhaust gases from the plurality of flanges; and a collector having a plurality of inlet ports connected to the plurality of head pipes.