Abstract: A duct for connection between an exhaust manifold and a high-pressure turbine inlet include a cylindrical duct body defining a longitudinal axis. A frustoconical outlet nozzle connected at one end of the duct body and extending at about eighty-five degrees from the longitudinal axis. The duct further includes an inlet bell connected at the other end of the duct body and extending at about fifty degrees from the longitudinal axis.

Abstract: A duct for connection between an exhaust manifold and a high-pressure turbine inlet include a cylindrical duct body defining a longitudinal axis. A frustoconical outlet nozzle connected at one end of the duct body and extending at about eighty-five degrees from the longitudinal axis. The duct further includes an inlet bell connected at the other end of the duct body and extending at about fifty degrees from the longitudinal axis.

Abstract: The present invention relates to an intake manifold including first and second plenums in fluid communication with the throttle body and a plurality of runners depending from the plenums to direct air into the cylinders of an engine. Each of the runners includes a vent to release pressurized air within the runner. The intake manifold tuning assembly further includes a tuning device disposed between the plenums, the tuning device includes a housing having a plurality of tuning ports aligned relative to the vents to receive pressurized air from the runners. An intermediate plenum is defined within the housing that directs pressurized air from one runner to another runner corresponding to the next cylinder in the firing sequence of the engine. Valves regulate the transfer of pressurized air between the runners for increased torque output over a predetermined range of engine speed.

Abstract: The present invention relates to an intake manifold including first and second plenums in fluid communication with the throttle body and a plurality of runners depending from the plenums to direct air into the cylinders of an engine. Each of the runners includes a vent to release pressurized air within the runner. The intake manifold tuning assembly further includes a tuning device disposed between the plenums, the tuning device includes a housing having a plurality of tuning ports aligned relative to the vents to receive pressurized air from the runners. An intermediate plenum is defined within the housing that directs pressurized air from one runner to another runner corresponding to the next cylinder in the firing sequence of the engine. Valves regulate the transfer of pressurized air between the runners for increased torque output over a predetermined range of engine speed.

Abstract: A device comprising an air intake duct and at least one passive one-way air intake valve disposed in the air intake duct. There is also an actuator coupled to the one-way valve for biasing the one-way valve in a closed position. During operation, the one-way air intake valve is opened via an air induction force created by operation of an internal combustion engine positioned downstream from the actuator. This one-way air intake valve is closed after the internal combustion engine has stopped operating to prevent emissions of evaporated hydrocarbons from the engine through the air induction system. The valve can also be moved into a fail-safe position if the actuator fails but the engine is operating.

Abstract: A device comprising an air intake duct and at least one passive one-way air intake valve disposed in the air intake duct. There is also an actuator coupled to the one-way valve for biasing the one-way valve in a closed position. During operation, the one-way air intake valve is opened via an air induction force created by operation of an internal combustion engine positioned downstream from the actuator. This one-way air intake valve is closed after the internal combustion engine has stopped operating to prevent emissions of evaporated hydrocarbons from the engine through the air induction system. The valve can also be moved into a fail-safe position if the actuator fails but the engine is operating.