Patent ID: 9695721
Date: 2017-07-04
CPC Classifications: F01N,Y02T

Claim:
1. An internal combustion engine, comprising: a cylinder block defining at least one cylinder; a cylinder head coupled to the cylinder block; and a modular exhaust manifold coupled to the cylinder head and configured to receive exhaust gas from the cylinder head, wherein the modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis, and wherein each of the exhaust manifold segments includes a separate water jacket tube defining a separate liquid coolant passage around each of the plurality of exhaust manifold segments; and a coupling assembly for joining adjacent exhaust manifold segments, the coupling assembly including a plurality of annular sealing devices including at least a first annular sealing device and a second annular sealing device configured to fit within a first set of grooves formed on an end portion of a first exhaust manifold segment and a spacing collar configured to attach to the end portion of the first exhaust manifold segment and couple with a fixed radial flange formed on an adjacent end portion of a second exhaust manifold segment to join the first exhaust manifold segment and the second exhaust manifold segment.