Abstract: A diesel locomotive engine having a piston with a unique bowl geometry. The bowl is defined in part by a center portion having a partial spherical shape. A cone portion (22) is located adjacent the central portion. An annular toroidal surface (24) is connected to the cone portion (22) and is defined by a toroidal major diameter (Dtm) and a toroidal minor radius (Rtm). A crown rim (26) is connected to the annular toroidal surface (24) and to an upper flat rim face of a sidewall.

Abstract: A waveguide adaptor assembly with interface and waveguide ends for coupling an end of a waveguide with a desired interface configuration. The assembly including a flange adaptor adapted to receive the end of the waveguide. An outer shoulder projecting radially from the interface end of the flange adaptor is adapted to mate with a recessed area formed in the waveguide end of an interface. A pair of retaining groove(s) on opposing sides of the recessed area co-operating with each other and adapted to receive a retainer that, pressing upon a waveguide end of the outer shoulder as it is inserted, biases the interface end of the flange adaptor against the recessed area. The interface having the desired interface configuration at the interface end.

Abstract: An optimized two-stroke internal combustion diesel engine, suitable for locomotive applications, has been developed to meet the EPA locomotive Tier 2 emission standards. To achieve a low emission target below the EPA Tier 2 standards for NO, (5.5 g/bhp-hr) and particulates (0.2 g/bhp-hr), several innovative changes have been made to the engine. These changes include: a new piston bowl geometry; low oil consumption piston rings; optimized surface finish cylinder liner; optimized fuel injection camlobe; modified fuel injector nozzle; new efficient aftercooler; optimized oil separator; and optimized turbocharger.