Abstract: The waste energy recovery assembly for a fuel cell system comprises: a cathode exhaust passage in fluid communication with a mixing zone through a collection chamber; an anode exhaust passage in fluid communication with said mixing zone by way of an anode exhaust gas orifice disposed in a direction capable of forming an anode exhaust gas flow entering said mixing zone at an angle of about 45° to about 135° to a combined gas flow entering said mixing zone from said collection chamber; a thermal exchange structure in fluid communication with said mixing zone; and an exhaust gas passage in fluid communication with said thermal exchange structure.

Abstract: A fuel injector includes a flexural element connected to a valve armature for restricting radial movement of the armature within a fuel passage. The flexural element is flat and exerts no force on the valve when it is closed but is flexed when the valve is opened and supplements the valve spring force during closing of the valve. The flexural element also is used to set the valve stroke length equal to the element's thickness. A flat tool presses a valve ball into the armature while the ball is seated on a valve seat until the flexural element engages a seat related surface.

Abstract: An etched interconnect for fuel cell elements comprising solid oxide electrolyte, an anode, and a cathode, includes a conductive base sheet having first and second faces having anode and cathode gas flow passages, respectively. The anode gas flow passages and cathode gas flow passages each have a unique geometry selected to optimize fuel and oxidant gas flow. In a preferred embodimenlt, the gas flow passages are prepared using a photochemical etching process.

Abstract: A method of using a pressure regulator in a fuel cell system is disclosed. The method comprises controlling a purge gas pressure of a purge gas disposed in an enclosure disposed around a fuel cell stack and a waste energy recovery assembly, by seating a pressure plunger in a seating portion of a pressure regulator, wherein the purge gas unseats the pressure plunger when the purge gas pressure exceeds a desired pressure. The method further comprises passing a sufficient amount of the purge gas past the seating portion to reduce the purge gas pressure to at least the desired pressure.

Abstract: An engine fuel injector (10) having a fuel inlet tube (12) and a biasing spring (56) loading a solenoid actuated injection valve (50) within the injector (10) is provided with a calibration assembly (58) combining the calibration member (74) or tube with an internally mounted fuel inlet filter (76). The calibration member (74) may include a body (78) with an enlarged end (88) that is interference fitted within the fuel inlet tube (12) and an opposite stepped in end (80) forming a seat (82) which is engaged by the biasing spring (56). The fuel filter (76) has an enlarged annular base (92) fixed within the enlarged end (88) of the calibration member (74) and having an associated filter screen (98) or element through which fuel passing through the calibration member is filtered for passage through the injector (10).

Abstract: A method for monitoring process gas of a solid oxide fuel cell system is disclosed. The method comprises directing a portion of process gas from a chamber of the solid oxide fuel cell system to a main plenum chamber. A portion of process gas is cooled to a measurable temperature and directed to a sensor for analyzing. A solid oxide fuel cell system is also disclosed.

Abstract: A cover for use with a fuel injector. The cover formed of at least two separable pieces that are assembled over the fuel injector. The pieces are held together by a detent member and cooperate to form a cavity that houses the fuel injector. A compliant member is positioned within the cavity to minimize relative movement between the cover and the fuel injector.

Abstract: A fuel injector for an engine includes a continuous endoskeletal injector tube enclosing an imperforate continuous passage for fuel flow from an inlet end to an outlet end of the tube. A valve seat, injection valve, tubular magnetic pole, biasing spring and adjusting sleeve are mounted within the tube, optionally with other elements, all being exposed to fuel in the passage defined by the tube. A solenoid coil and a magnetic body together with mounting components and seals are mounted on the exterior of the tube where they are protected from exposure to the fuel, which is restricted to passage within the continuous tube. The body, pole and armature form a magnetic flux concentrating path operative to attract the armature to the pole and open the valve when the coil is energized. The solenoid coil may be preassembled with its connector in a body forming a separate coil assembly for subsequent installation on the injector tube.

Abstract: The invention relates to a process and to a heat exchanger (8) intended in particular for performing the process, for operating a high-pressure boiler (1), having consuming units (3', 3", 3'") connected to the high-pressure boiler (1), the condensate from which units is returned to a condensate tank (5). By means of a feed water pump (7), feed water is fed to the boiler (1) and the condensate and the feed water are then fed to a heat exchanger (8) upstream of the condensate tank (5). According to the invention, the hot condensate is fed to the free space of the heat exchanger (8), and the feed water which is to be heated is pumped to the heat exchanger (8), passed helically from the cold to the warm zone in the heat exchanger (8) and carried from the heat exchanger (8) into the boiler (1). As a result of this heating up of the feed water, the heat contained in the condensate becomes economically useable, resulting in substantial savings in heat medium for the boiler.

Abstract: A multi-cylinder diesel internal combustion engine with a supercharger and a charging air starting arrangement which includes a starting air reservoir and a starting air distributor. An additional air reservoir is provided for storing a quantity of supplemental charging air with the additional air reservoir being selectively communicated with air inlet valves during at least an acceleration and/or sudden loading of the engine.