Abstract: The invention concerns a method for controlling the opening of an internal combustion engine throttle valve body assembly, characterized in that it includes the following steps: specifically mapping the engine, limiting the opening angle of the throttle valve body assembly, and defining particular operating points requiring replacement of the usual mapping by the specific mapping.

Abstract: A rear fork for a bicycle, including a brake caliper support, mounted in rotation about the axle of the rear wheel and a hub carrier, fixed to the wheel axle, including a lower arm connected at a first end to the hub carrier and at a second end to the frame of the bicycle, and an upper arm, extending from the hub carrier to the frame. A connector link is arranged between the brake caliper and the lower arm, and the distance between the point of connection of the connector link on the lower arm and the connection of the lower arm to the hub carrier is at least equal to a third of the distance between the connection of the lower arm to the hub carrier and the connection of the lower arm to the frame.

Abstract: A device and control method for actuating valves of a motor vehicle internal combustion engine including at least a controlled hydraulic actuator actuating the associated valve that is provided in the form of a cylinder. A mobile piston connected to the valve delimits two opposite hydraulic pressure chambers each supplied with an incompressible fluid and pressure regulated by a control unit such that the pressure prevailing in one of the chambers is alternately higher/lower than that which prevails in the other chamber to actuate the valve. Each pressure chamber of the cylinder is capable of communicating with a corresponding actuating hydraulic pressure source, which includes a pneumatic return mechanism for the fluid.

Abstract: A rear suspension for a bicycle. A bottom fork is mounted pivotally at the bicycle frame bottom bracket and its other end is mounted at the top fork. The bottom fork bears a wheel which is driven in rotation by a chain. The top end of the top fork is pivotally mounted at the end of an arm, the other end of which is pivotably mounted to the frame. The vertices of the articulated quadrilateral defined by the top and bottom forks, the arm and the frame are arranged so that a straight line passing through the rear wheel hub rotation axis and the center of curvature of the hub path during the suspension travel forms an angle ranging between 10-° with the horizontal straight line extending parallel to the bicycle median longitudinal plane.

Abstract: An engine plant for aircraft comprising a multicylinder internal combustion engine (1) whose crankshaft drives an adjustable pitch propeller (5), mechanisms for adjusting the engine speed and a common power stick (4) that controls the operation of the engine and of the adjustment mechanisms, characterized in that said engine is a compression ignition engine (1) that cooperates with an electronic control system (3) controlling the quantity of the fuel injected.

Abstract: In a device for regulating the air supply of an internal combustion engine supercharged by a turbo-compressor unit driven in rotation by the engine's exhaust, the intake of the rotating compressor is controlled by an intake regulation (or gating) system capable of reducing the compressive effect of the rotor of the compressor. Control elements of said regulation (or gating) system are connected with the accelerator linkage so as to close the regulation (or gating) system and reduce the compressive effect to the maximum degree when the accelerator moves toward the idling position of the engine.

Abstract: A fuel flow regulation device for a supercharged engine of the type having an injection pump whose piston's bottom position is determined by a moving stop, is disclosed. The fuel flow regulation device consists of a tridimensional cam contacting the stop and movable in an axial and a rotational direction. The axial movement of the cam is provided by a piston rod connected to a pair of pistons, one of which has a smaller diameter than the other by a predetermined amount, in which the pistons are oppositely subjected to engine intake pressure and engine exhaust pressure. The rotational movement of the cam is controlled by a jack subject to the output of a volumetric hydraulic pump actuated by the engine and pumping fluid from the engine cooling system.