Abstract: The present specification describes an actuating lever (21) for a disc brake (1, 7), having a cam section (23) with a part cylindrical curved surface (25) and a part cylindrical channel (27) with an elongate cylindrical force transmitting member (29) located therein and being parallel to the longitudinal axis of the said part cylindrical surface (25), and having opposite end regions which are located in recesses (31, 33) formed in the lever (21) at opposite ends of the said channel (27) to thus retain the force transmitting member (29) in position on the lever (21).

Abstract: A fuel injector comprises a valve needle slidable in a bore and moveable under the influence of the fuel pressure within a control chamber defined, in part, by a surface associated with the needle, and a piezoelectrically actuated valve controlling the fuel pressure within the control chamber. The control chamber may be supplied with fuel through a passage provided in the valve needle.

Abstract: A lock for a thrust reverser comprising a retainer member carried by a pivot pin, the pivot pin being angularly moveable between a first position in which the retainer member retains a part of the thrust reverser and a second position in which the said part of the thrust reverser is not retained by the retainer member. The lock further comprises a lock arrangement for retaining the pivot pin in its first position, the lock arrangement comprising a lock member axially moveable between a locked position, in which it cooperates with the pivot pin to prevent movement of the pivot pin from its first position to its second position, and a retracted position, an arrangement for restricting angular movement of the lock member, and a solenoid actuator arranged to control movement of the lock member.

Abstract: A braking system (10) with a master cylinder (12) which comprises at least one cylinder/piston arrangement (14, 16) which can be actuated by a brake pedal (18) for supplying hydraulic fluid to at least one brake circuit (22, 24) is characterized by a controllable pressure source (54, 78, 90, 92) which, under the control of an electronic control unit ECU subjects the piston (16) of the cylinder/piston arrangement (14, 16) in the sense of supplying hydraulic fluid to the brake circuit (22, 24).

Abstract: A vehicle door locking system including a latch mechanism (11) having an operative condition and a release condition, external and internal manually operable controls (14, 16) for releasing the latch mechanism, and controllable coupling means (15, 17) for determining whether or not the internal and/or external controls (16, 14) are linked to the latch mechanism (11); the system includes a control arrangement (21) responsive to locking input signals for determining the relationship between the controls (15, 17) and the latch mechanism (11).

Abstract: A distributor arrangement is disclosed which comprises a distributor member rotatable within a bore formed in a sleeve, the sleeve being provided with a supply port through which fuel under high pressure can be supplied to the distributor member, in use, and a plurality of delivery ports, the distributor member being provided with a delivery passage registrable with the delivery ports, in turn, upon rotation of the distributor member whereby fuel under pressure supplied through the supply port flows to a selected one of the delivery ports, in use, the distributor arrangement further comprising a porting arrangement whereby, when the distributor member occupies a position in which the delivery passage is not registered with any of the delivery ports, cooling fluid is able to flow through the delivery passage.

Abstract: A fluid metering valve, for example as shown in FIG. 1, comprises a valve element moveable, axially and angularly, by a drive member, a sensor arranged to monitor the position occupied by a target carried by the drive member, and an adjustment arrangement whereby the axial position of the target can be adjusted relative to the drive member independently of the angular position of the target. A backlash free connection may be provided between the valve element and the drive member, the backlash free connection comprising a projection protruding laterally from one of the drive member and the valve element, the projection being received within a recess associated with the other of the drive member and the valve element, the dimensions of the projection and the recess being such that the projection engages the sides of the recess but is spaced from the base thereof, and biasing means urging the projection towards the base of the recess.

Abstract: A connector, for example as shown in FIG. 1, for use in supplying fuel to a fuel injector comprises a tubular member arranged to be received, in use, within an opening provided in an engine cylinder head, the tubular member being shaped, at a first end thereof, for cooperation with part of the fuel injector, a second end of the tubular member being shaped for cooperation with an inlet adapter member. The inlet adaptor member is secured, in use, within the opening, the inlet adapter member and the tubular member defining a flow passage whereby fuel can be supplied, under pressure, to the fuel injector.

Abstract: An actuator having a body defining an internal cavity and a gland disposed within the cavity, the gland being secured against movement relative to the actuator body in a direction along the internal cavity by a securing element located in an opening of which respective parts are defined by the actuator body and the gland, and which allows insertion of the securing element into the opening along a substantially linear path.

Abstract: A pneumatic brake booster (10) has a booster housing (12), the interior of which is subdivided by at least one movable wall (22) into a vacuum chamber (24) and a working chamber (26). Projecting into the booster housing (12) is a control valve (28) which, after a response force acting counter to its operating direction has been overcome, controls a pneumatic pressure difference acting upon the movable wall (22). The control valve (28) is operable both by means of a mechanical input element (36) and, independently thereof, by means of an electromagnetic arrangement (48) comprising a coil (58) and an armature (50), which are displaceable relative to one another along the operating direction.

Abstract: A fuel injector comprising a valve needle which is slidable within a bore, a surface associated with the valve needle defining, in part, a control chamber which communicates, through a restriction, with a supply passage. The fuel injector also includes an injection control valve controlling communication between the control chamber and a low pressure reservoir, and a drain valve controlling communication between the supply passage and the low pressure reservoir. The injection control valve and the drain valve include respective armatures moveable under the influence of a common electromagnetic actuator.

Abstract: A fuel injector comprising a valve needle biased by a spring into engagement with a seating, a surface associated with the valve needle being exposed to fuel pressure within a control chamber and restricted communication structure providing a restricted flow path between a supply passage and the control chamber. The fuel injector further comprises a drain valve controlling communication between the supply passage and a low pressure reservoir and an injection control valve controlling communication between the control chamber and the low pressure reservoir, the drain valve and the injection control valve being moveable under the control of a single electromagnetic actuator including an armature common to both valves.

Abstract: A pump injector comprising a pumping chamber, a valve needle controlling communication between the pumping chamber and one or more outlet openings, and a spill valve controlling communication between the pumping chamber and a low pressure fuel reservoir, in use. The pump injector also comprises an inlet non-return valve arranged to permit fuel to flow from the fuel reservoir to the pumping chamber, in use, but substantially preventing fuel flow in the reverse direction. Alternatively, the pump injector may comprise an abutment piston engageable with the valve needle which defines, in part, a control chamber for fuel, and a control valve controlling communication between the pumping chamber and the control chamber.

Abstract: A fuel injector includes a first needle, and a second needle slidable within a passage formed in the first needle. The needles are engageable with respective seatings to control fuel delivery through respective groups of outlet openings. A load transmitter is provided whereby movement of the first needle can be transmitted to the second needle. An alternative injector includes a second needle provided with formations defining an integral resilient biasing arrangement.

Abstract: A fuel system comprising a fuel pump having a pump outlet which communicates with a fuel volume, the volume communicating with the inlets of a plurality of fuel injectors. The fuel flow paths between the pump outlet and the inlet of each injector form substantially equal restrictions to the flow of fuel.

Abstract: A seal comprises a support member having an outer periphery of substantially circular form, and a resilient seal member mounted upon the support member, the seal member, when occupying a relaxed condition, having an outer periphery of generally circular form and a diameter greater than that of the support member, the seal member and support member being eccentric to one another when the seal member occupies the relaxed condition, the seal member being compressible towards a compressed condition in which the seal member and the support member are of substantially equal diameter and are substantially coaxial.

Abstract: A sensor assembly for a vacuum brake booster (10) comprises a housing (48) arranged outside the brake booster housing (12), in which a differential pressure sensor (56) is located. For connecting the differential pressure sensor (56) with a working chamber (16′) of the brake booster (10), the housing (48) has a first air duct (50) which extends from the sensor assembly (46) to the working chamber (16′) of the brake booster (10). In addition, the sensor assembly (46) has a second air duct (52) which extends into a vacuum chamber (18′) of the brake booster (10) in order to connect the differential pressure sensor (56) with said vacuum chamber (18′). A plug-type or socket-type connector (64) for a further sensor is provided in particular on the side of the sensor assembly (46) which is opposite the air ducts (50, 52).

Abstract: A security arrangement comprises a housing containing an electrical or electronic component, a resilient member being located within the housing and retained in a pre-stressed condition by a retaining member, the resilient member being located such that removal of the retaining member results in the resilient member flexing to a position in which the resilient member or a member carried thereby engages the component resulting in failure of the component.

Abstract: An advance arrangement comprising an advance piston slidable within a bore under the action of fuel pressure within a control chamber, a surface associated with the piston being exposed to the fuel pressure within the control chamber. The control chamber communicates, through a restricted flow passage, with a low pressure fuel volume. A valve is operable to vary the restriction to flow formed by the restricted flow passage.

Abstract: A drive arrangement for driving a rotary component of a fuel pump comprises a resilient member associated with either a drive shaft or the rotary component and engageable with a surface associated with the other of the drive shaft and rotary component. In use, where a braking force greater than a predetermined level is applied to the rotary component, the member rides out of engagement with the surface permitting relative rotary motion of the drive shaft and rotary component.