Abstract: An apparatus for improving exhaust gas recirculation performance is provided which induces improved exhaust gas recirculation flow during engine operating transients, including transients in which exhaust gas flow conditions are unfavorable. The apparatus includes a fresh air intake passage with a venturi section and an exhaust gas recirculation passage outlet, preferably in the form of a pitot tube, arranged in the fresh air intake passage adjacent to the venturi section such that a pressure-reducing flow in the fresh air is induced as a result of the Coand? effect. Establishing Coand? flow adjacent to the exhaust gas recirculation outlet substantially assists in drawing exhaust gas into the fresh air intake flow in transient operating conditions, including unfavorable exhaust-to-intake pressure difference conditions. The Coand? flow also assists in more rapid and thorough mixing the gases to provide a homogeneous mixture to minimize NOx production during engine operating transients.

Abstract: The present invention is a laser firearm sight apparatus that has a housing attachable onto the external threads of a firearm muzzle, a light source having at least two lasers emitting laser beams, and an activating mechanism for activating and powering the light source. The housing defines a longitudinal bore for universal attachment onto several different muzzles of different types of firearms of the same caliber barrel while keeping the laser sight accurate within an acceptable range without further adjustment. The lasers emit a beam that is concentric and parallel with the muzzle and bore of the firearm.

Abstract: An apparatus for improving exhaust gas recirculation performance is provided which induces improved exhaust gas recirculation flow during engine operating transients, including transients in which exhaust gas flow conditions are unfavorable. The apparatus includes a fresh air intake passage with a venturi section and an exhaust gas recirculation passage outlet, preferably in the form of a pitot tube, arranged in the fresh air intake passage adjacent to the venturi section such that a pressure-reducing flow in the fresh air is induced as a result of the Coand{hacek over (a)} effect. Establishing Coand{hacek over (a)} flow adjacent to the exhaust gas recirculation outlet substantially assists in drawing exhaust gas into the fresh air intake flow in transient operating conditions, including unfavorable exhaust-to-intake pressure difference conditions.