Abstract: A clutched driven device (10) having a clutch assembly (16) with a first rotary clutch portion (50), a second rotary clutch portion (52), a bearing (54), a wrap spring (56) and an actuator (60). The first rotary clutch portion has an interior clutch surface (76). The first and second rotary clutch portions are rotatably disposed about a rotary axis (70) of the clutched driven device. The bearing is received between the first and second rotary clutch portions and supports the first rotary clutch portion for rotation on the second rotary clutch portion. The wrap spring is disposed radially inwardly of the bearing and has a plurality of helical coils (114) that are received against the interior clutch surface. The actuator is configured to selectively initiate coiling of the wrap spring to cause the helical coils of the wrap spring to disengage the interior clutch surface to a predetermined extent.

Abstract: The present invention provides a tunable engine manifold which employs sliders to form one wall of the inlet runners. The sliders can be moved to alter the cross sectional area of the runners as desired. Seals on the sliders provide an efficient means to seal the runners to prevent undesired leaks within runners and, while not required by the present invention, the overmolding of the seals onto the sliders provides a cost effective and mechanically effective manner of providing the desired seals between the inlet runners and the sliders. The tunable engine manifold can be an inlet or an exhaust manifold and can provide a crossover between the banks of inlet runners, or between individual runners, to control resonance in the manifold.

Abstract: A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface.

Abstract: A clutched driven device (10) having a clutch assembly (16) with a first rotary clutch portion (50), a second rotary clutch portion (52), a bearing (54), a wrap spring (56) and an actuator (60). The first rotary clutch portion has an interior clutch surface (76). The first and second rotary clutch portions are rotatably disposed about a rotary axis (70) of the clutched driven device. The bearing is received between the first and second rotary clutch portions and supports the first rotary clutch portion for rotation on the second rotary clutch portion. The wrap spring is disposed radially inwardly of the bearing and has a plurality of helical coils (114) that are received against the interior clutch surface. The actuator is configured to selectively initiate coiling of the wrap spring to cause the helical coils of the wrap spring to disengage the interior clutch surface to a predetermined extent.

Abstract: A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface.

Abstract: The present invention provides a tunable engine manifold which employs sliders to form one wall of the inlet runners. The sliders can be moved to alter the cross sectional area of the runners as desired. Seals on the sliders provide an efficient means to seal the runners to prevent undesired leaks within runners and, while not required by the present invention, the overmolding of the seals onto the sliders provides a cost effective and mechanically effective manner of providing the desired seals between the inlet runners and the sliders. The tunable engine manifold can be an inlet or an exhaust manifold and can provide a crossover between the banks of inlet runners, or between individual runners, to control resonance in the manifold.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold is provided for directing a flow of air between a plenum and an internal combustion engine. The tunable intake manifold includes a manifold housing defining an interior. The manifold housing has a plurality of runner walls extending through the interior. The tunable intake manifold also includes a slider having a slider wall having an angled portion separated from a primary portion by a curved portion. The slider wall extends through the interior of the manifold housing. The slider wall cooperates with the runner wall to define a runner having a defined cross sectional area for transporting the flow of air therethrough. The slider is slidably engaged with the manifold housing for moving the slider wall relative to the runner wall to selectively change the defined cross sectional area of the runner, such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold extends between a plenum and an intake of an internal combustion engine. A manifold housing defines an interior and a runner wall extending through the interior. A slider extends through the interior and slidably engages the manifold housing. The slider defines a slider wall cooperative with the runner wall to form a runner for transporting air therethrough. The runner defines a cross section. A drive assembly is operatively coupled between the manifold housing and the slider to move the slider transversely along the manifold housing to change the defined cross section of the runner such that the volume of air passing therethrough changes with the movement of the slider.

Abstract: A tunable intake manifold is provided for directing a flow of air between a plenum and an internal combustion engine. The tunable intake manifold includes a manifold housing defining an interior. The manifold housing has a plurality of runner walls extending through the interior. The tunable intake manifold also includes a slider having a slider wall having an angled portion separated from a primary portion by a curved portion. The slider wall extends through the interior of the manifold housing. The slider wall cooperates with the runner wall to define a runner having a defined cross sectional area for transporting the flow of air therethrough. The slider is slidably engaged with the manifold housing for moving the slider wall relative to the runner wall to selectively change the defined cross sectional area of the runner, such that the volume of air passing therethrough changes with the movement of the slider.