Abstract: An aircraft control system includes a propeller governor in which a motor is used to apply a compression force on a speeder spring, and a turbocharger in which a motor is used to actuate a needle valve associated with a diaphragm cell. An electronic control unit may be used to control the motor in the propeller governor and the motor in the turbocharger. The integration of the propeller governor and the turbocharger into a single control system decreases the number of individual adjustments that must be performed manually by the pilot.

Abstract: A snowmobile with an arrangement of a four cycle engine is disclosed providing a relatively low center of gravity for improved handling and maneuverability. The engine comprises a cylinder unit slanted to the back of the snowmobile and an improved packaging of auxiliary components in order to optimize the location of the center of gravity on the snowmobile.

Abstract: A catalytic converter device for cleansing exhaust gas emitted from an internal combustion engine is disclosed. The catalytic converter device includes an elongated body having a longitudinal axis. An inlet area is located at one end of the elongated body, wherein the exhaust gas enters the elongated body in the inlet area. A sleeve extends from the inlet area. The sleeve has a catalytic material formed thereon. The sleeve has an active surface for reacting with the exhaust gas, wherein the size of the active surface increases as a distance from the inlet area increases. The sleeve includes a plurality of openings formed therein and at least one depression.

Abstract: A torsional-vibration damper for decoupling the torsional vibration between a drive assembly and a secondary assembly is disclosed. The damper includes a first connector operatively connected to one of the assemblies, a pressure body connected to the first connector, a second connector operatively connected to the first connector permitting transmission of rotational motion therebetween, an axial displacement limiter, and a ramp unit. The ramp unit includes a resilient member and a ramp body that is connected to the second connector. The ramp body includes first and second ramps that are operatively interactive with the pressure body. The first and second ramps define a stable position when the first and second ramps and the pressure body are pressed into engagement with one another by the resilient member. The first and second connectors are rotatable with respect to one another through a predetermined angle of rotation measured from the stable position.

Abstract: An aircraft control system includes a propeller governor in which a stepper motor is used to apply a compression force on a speeder spring, and a turbocharger in which a stepper motor is used to actuate a needle valve associated with a diaphragm cell. An electronic control unit may be used to control the stepper motor in the propeller governor and the stepper motor in the turbocharger. The integration of the propeller governor and the turbocharger into a single control system decreases the number of individual adjustments that must be performed manually by the pilot.

Abstract: An aircraft control system includes a propeller governor in which a stepper motor is used to apply a compression force on a speeder spring, and a turbocharger in which a stepper motor is used to actuate a needle valve associated with a diaphragm cell. An electronic control unit may be used to control the stepper motor in the propeller governor and the stepper motor in the turbocharger. The integration of the propeller governor and the turbocharger into a single control system decreases the number of individual adjustments that must be performed manually by the pilot.