Abstract: A hydraulic system for a vehicle, comprising a hydraulic actuation device for moving one or more moveable components of the vehicle. The actuation device comprises a hydraulic pump with an associated drive means, a reservoir for hydraulic fluid as well as one or more hydraulic actuators connected to the pump through hydraulic hoses. The hydraulic actuators act on the one or more moveable components. The pump is designed to supply pressurized hydraulic fluid to the one or more hydraulic actuators. A pressure ripple reduction device for reducing pressure ripples in the hydraulic fluid originating from the hydraulic pump is provided, having an expansion chamber.

Abstract: A hydraulic system for a vehicle, comprising a hydraulic actuation device for moving one or more moveable components of the vehicle. The actuation device comprises a hydraulic pump with an associated drive means, a reservoir for hydraulic fluid as well as one or more hydraulic actuators connected to the pump through hydraulic hoses. The hydraulic actuators act on the one or more moveable components. The pump is designed to supply pressurized hydraulic fluid to the one or more hydraulic actuators. A pressure ripple reduction device for reducing pressure ripples in the hydraulic fluid originating from the hydraulic pump is provided, having an expansion chamber.

Abstract: A hydraulic actuating device for a closure assembly, for example of a vehicle, which closure assembly comprises a closure element which can be moved between a closed position, in which the closure element closes off an opening, and an opened position. The hydraulic actuating device comprises a hydraulic actuator for moving the closure element, which actuator has a housing having a closing chamber and an opening chamber. Further provided are a hydraulic pump having an associated electric pump motor and a reservoir for hydraulic fluid. The hydraulic actuating device further comprises a first pressure-limit valve, which is connected to the opening chamber, and a second pressure-limit valve, which is connected to the closing chamber. Control means are further provided for controlling the supply of hydraulic fluid under pressure to the opening chamber or to the closing chamber of the actuator.

Abstract: A radial plunger machine is disclosed. The radial plunger machine includes a pintle and a rotor which is rotatable about said pintle, at least one radial cylinder bore being provided in the rotor, a plunger being reciprocably arranged in said cylinder bore, and the pintle being provided with an inlet duct and an outlet duct for supplying and discharging hydraulic fluid to and from the cylinder bore, respectively. The pintle is made from austenitic stainless steel and has a higher coefficient of linear thermal expansion than the material of the rotor.

Abstract: A device for measuring pressure in a space includes a semiconductor component suitable for measuring pressure that is positioned in the space and that has connecting pads for flip-chip mounting, a support element with a flat surface carrying a pattern of conductors onto which the semiconductor component is attached, and spacer elements in the space between the pattern of conductors and the bonding pads of the semiconductor component such that there is a space between the semiconductor component and the surface of the support elements in which space the pressure equals the pressure to be measured.

Abstract: A fuel heater for heating liquid fuel under pressure for use in an injector system-injection engine includes a pill 5 made of material with positive temperature coefficient (PTC) with a heatsink member 6, 7 covering both the top and bottom surface of the pill. At least one narrow, preferably spiral-shaped groove 15, 16 extends on either side of the PTC pill, either in the PTC material or in the heatsink material, or in both materials to carry fuel supplied under pressure. The fuel flows into the groove at one side of the pill from a central region of the pill towards the edge of the pill, and then into the groove at the other side of the pill from the edge towards the central region while being heated by the pill. The narrow groove restricts the flow of fuel to keep it under pressure while being heated which then, in turn, provides for the fuel to abruptly convert from a liquid to a gaseous state upon exiting the injector system.