Abstract: A heat exchanger comprises a seamless body, and the seamless body may include a substantially cylindrical configuration defining a radial direction, a circumferential direction, a longitudinal axis, a first cylindrical wall and a plurality of fins. Each fin may extend at least partially in the radial direction and helically along the longitudinal axis. Also, each fin may be at least partially hollow defining an internal flow passage, and each fin of the plurality of fins may be at least partially spaced away from an adjacent fin, defining an external flow passage.

Abstract: A heat exchanger comprises a seamless body, and the seamless body may include a substantially cylindrical configuration defining a radial direction, a circumferential direction, a longitudinal axis, a first cylindrical wall and a plurality of fins. Each fin may extend at least partially in the radial direction and helically along the longitudinal axis. Also, each fin may be at least partially hollow defining an internal flow passage, and each fin of the plurality of fins may be at least partially spaced away from an adjacent fin, defining an external flow passage.

Abstract: An exhaust aftertreatment module comprising a plurality of mounts for connecting the module to a surface. The mounts are arranged in a radial pattern around a central location of the module. The mounts also have a direction of travel aligned with a radial direction of expansion that passes through the central location.

Abstract: Designing engineering models using finite element analysis applications often involves the knowledge and memorization of numerous commands and codes to efficiently draw and analyze engineering models. If not done accurately, or if not done in a time efficient manner, unacceptable loss can occur because production deadlines are delayed or not met altogether, for example. The graphical user interface method and apparatus for interaction with finite element analysis applications represented in various embodiments makes use of the computer and finite element analysis applications very effective. The graphical user interface is based upon child windows with well-defined characteristics which allow a user to create, modify, and manipulation drawings in an efficient and timely manner.