Abstract: A valve actuation system for an internal combustion engine The valve actuation system (S) for an internal combustion engine comprises: ?a rocker (6) pivotably mounted around a pivot axis (A6), comprising: ?a driven end portion (62) for cooperating with a rotating cam including a main bump and at least one smaller auxiliary bump; ?an actuating end portion (63) including a piston (8) for opening at least one valve of the engine following the cooperation of the driven end portion (62) with a bump of the cam, the piston (8) being slidably mounted relative to the rocker (6) between a extended position allowing said piston (8) to open said valve when the driven end portion (62) contacts the auxiliary bump, and a retracted position preventing said piston (8) to open said valve when the driven end portion (62) contacts the auxiliary bump; ?a fluid circuit for causing the piston (8) to move from its retracted position to its extended position; ?a reset circuit comprising a reset valve (99) rotatably mounted relative t

Abstract: A valve actuation system for an internal combustion engine The valve actuation system (S) for an internal combustion engine comprises: ·a rocker (6) pivotably mounted around a pivot axis (A6), comprising: ·a driven end portion (62) for cooperating with a rotating cam including a main bump and at least one smaller auxiliary bump; ·an actuating end portion (63) including a piston (8) for opening at least one valve of the engine following the cooperation of the driven end portion (62) with a bump of the cam, the piston (8) being slidably mounted relative to the rocker (6) between a extended position allowing said piston (8) to open said valve when the driven end portion (62) contacts the auxiliary bump, and a retracted position preventing said piston (8) to open said valve when the driven end portion (62) contacts the auxiliary bump; ·a fluid circuit for causing the piston (8) to move from its retracted position to its extended position; ·a reset circuit comprising a reset valve (99) rotatably mounted relative t

Abstract: A valve actuation mechanism includes rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston, housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly linked to the bore, from a first position to a second position, in which a cam follower of the rocker reads at least one auxiliary cam sector of a cam of the camshaft so as to perform an engine operating function. Each rocker includes a reset valve adapted to reduce fluid pressure in the chamber. The valve actuation mechanism includes, for each rocker, a reset cam profile adapted to open the reset valve when the activation piston has to be moved from its second position to its first position, and each reset valve includes a cam follower adapted to drive the reset valve as a function of the movement of the reset profile.

Abstract: A valve actuation mechanism includes rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston, housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly linked to the bore, from a first position to a second position, in which a cam follower of the rocker reads at least one auxiliary cam sector of a cam of the camshaft so as to perform an engine operating function. Each rocker includes a reset valve adapted to reduce fluid pressure in the chamber. The valve actuation mechanism includes, for each rocker, a reset cam profile adapted to open the reset valve when the activation piston has to be moved from its second position to its first position, and each reset valve includes a cam follower adapted to drive the reset valve as a function of the movement of the reset profile.

Abstract: The invention provides a method for estimating probabilities of a user clicking on items appearing in a results list obtained by a web search engine to predict the revenue for the results list, the web searching engine being used to search for the items on the web, the results list comprising a plurality of items. Each of the items has one or more properties, whereby at least one property may be common between the item and another item, and whereby the one or more properties each have a determined value. Historical data of users' actions comprises at least for each of the plurality of items or for a set of the plurality of items, a list of displays and clicks on selected items together with their values of properties if available, thus allowing the aggregation of statistics of displays and clicks for each value of properties.