Patent ID: 6134886
Filing Date: 2000-10-24
Classification: F01N

Abstract:
An exhaust manifold comprising a curved end portion, a first T-shaped portion connected through a sliding fit to the curved end portion, and at least one additional T-shaped portion connected through a sliding fit to the first T-shaped portion, wherein the end portion and the T-shaped portions each have a flange connection and a pipe connection, wherein each T-shaped portion is comprised of a pipe bend having a curved section, wherein each T-shaped portion has a sliding fit connection piece, wherein each sliding fit connection piece is shaped at an outer radius of the curved section of the T-shaped portion by internal high-pressure shaping, wherein the sliding fit connection pieces have ends extending at an incline relative to a central axis of the sliding fit connection pieces, wherein the pipe connections have ends extending at an incline relative to a central axis of the pipe connections, wherein each sliding fit connection piece has a length and each pipe bend has a diameter, and wherein a ratio of the length of the sliding fit connection piece to the diameter of the pipe bend is approximately 0.5.