In a multi-cylinder internal combustion engine, provided with a system for variable actuation of the intake valves of the engine, the hydraulic means and the solenoid valves for the variable actuation of the intake valves of the various cylinders are carri...

The connection part has an end side (12) formed with an inflow opening (14), and another end side (13) formed with an outflow opening (16), where the latter end side is connected to the inflow opening through a passage bore (15). A main body (11) is extend...

In a single device (1) for controlling electro-injectors (3) and electrovalves (5) in an internal-combustion engine, a first control circuit (2) for each electro-injector (3), a second control circuit (4) for each electrovalve (5), and a timing circuit (9)...

In a hydraulic actuator comprising a hydraulic piston, a hydraulic cylinder and a hydraulic pressure source wherein said hydraulic piston has a larger area exposed to pressure on the side of the control chamber than on the side of oil supply chamber of sai...

The method involves controlling pressure of a fluid, during a final phase of closure of a valve (2) in a hydraulic actuator (17). A speed of impact of the valve is detected during a closing phase, and the pressure of the fluid from an oil collection tank (...

The method involves moving components between two positions, where each component transmits vibrations at a location of one of end positions of the component during operation of an internal combustion engine (M). A signal correlated with these vibrations i...

An object of the present invention is to improve turbine efficiency and reduce fuel consumption. A turbocharged engine according to the present invention comprises an actuator for driving an exhaust valve and control means for controlling this actuator. Th...

A method of controlling a mechanical actuator using a modular map processor comprises monitoring a plurality of parameters associated with the actuator. The modular map processor generates a control signal based on the parameters for output to the actuator...

A camless intake/exhaust valve for an internal combustion engine that is controlled by a solenoid actuated fluid control valve. The control valve has a pair of solenoids that move a spool. Energizing one solenoid moves the spool and valve into an open posi...

The gas change system for an internal combustion motor, such as a diesel motor, has a hydraulically operated gas change valve (20) linked to an initial fluid system (30) for a medium to operate the valve (20). A second fluid system (40) for a hydraulic med...