Abstract: An electro-hydraulic braking system of the type capable of operating in a brake-by-wire mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels in proportion to the driver's braking demand as sensed electronically at a brake pedal, wherein when it is detected that there exists within the system a prescribed category of non safety-critical fault, it is arranged that the driver is caused to experience a modified, different to usual, travel/force behaviour characteristic through the braking pedal when braking.

Abstract: A hydraulic vehicle brake (10) has a hydraulic chamber (16) which sealingly accommodates a brake piston (18) which can slide along an axis (A). The brake piston (18) acts upon a friction member and can be moved by means of hydraulic pressure which is supplied to the hydraulic chamber (16) into an actuating position in which it presses the friction member against a rotor (brake disk, brake drum, etc.). In order to be able to use the vehicle brake (10) besides its function as a hydraulic service brake also as a parking brake, a spindle/nut arrangement (24) is provided which is driven by an electric motor (42) and arranged coaxial to the axis (A) of the brake piston (18), the nut (30) of which arrangement (24) is secured against rotation, and by rotation of the spindle (26) as a function of the sense of rotation can either be moved into contact with the brake piston (18) or be moved away from the brake piston (18) translatorily along the axis (A).

Abstract: An actuating piston (10) of a hydraulically and mechanically actuable, spot-type disk brake for motor vehicles, which is disposed in a sealing and displaceable manner in a cylinder bore of the disk brake is provided with an axial-force-transmitting conical surface (18) cooperating with a corresponding conical surface of a mechanical actuating device of the disk brake. To make the actuating piston (10) lighter in weight but nevertheless to withstand greater stress, the part of the actuating piston (10) comprising the axial-force-transmitting conical surface (18) consists of steel and the part of the actuating piston (10) cooperating with the cylinder bore of the disk brake is made of light metal or of plastics material, said components of the actuating piston being constructed as a single-piece composite component.

Abstract: Disk brake comprising a brake anchor plate (10) which is fastenable to a vehicle, a floating frame (12) which engages over a brake disk (14) of the brake and is guided on the brake anchor plate (10), at least one first brake shoe (22) which in the installed state of the brake is supported against the floating frame (12) at the side of the brake disk (14) directed towards the outside of the vehicle, at least one second brake shoe (20) which in the installed state of the brake is supported counter to braking forces against the brake anchor plate (10) at the side of the brake disk (14) directed towards the inside of the vehicle, at least one operating piston (24) which is disposed on the floating frame (12), wherein the brake shoes (20, 22) are removable substantially radially in relation to the axis of the brake, and wherein the first brake shoe (22) at its rear side (66) has a detent device (68) and the floating frame (12) has a detent device (72) complementary thereto, and that the brake shoe (22) is fastened

Abstract: A hydraulic motor arrangement including a hydraulic motor having an inlet port arranged to receive a driving fluid, and an outlet port whereby fluid can exhaust from the motor, the arrangement incorporating a by-pass line interconnecting the inlet and the outlet ports, a non-return valve being located within the by-pass line and being arranged to permit fluid flow from the outlet port to the inlet port but to substantially prevent fluid flow in the reverse direction.

Abstract: A deployment inhibiting arrangement for a jet engine thrust reverser system, the system including one or more actuators for operating a thrust reverser of the system and first locking means for the or each actuator normally serving to hold the system in a condition in which the thrust reverser is undeployed, the inhibiting arrangement including additional locking means normally held in an inactive condition, but operable by means independent of said one or more actuators and said first locking means to provide an additional mechanical lock serving to prevent deployment of the thrust reverser irrespective of the condition of the first locking means and/or actuator(s). The invention also relates to a jet engine thrust reverser system, the system including such a deployment inhibiting arrangement.

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 voltage supply circuit for an ECU of the type in which a supply voltage is connected to a voltage regulator via an N-MOSFET control device, wherein, at least above a predetermined lower operating value, the control device is adapted to introduce resistance of progressively higher value between the voltage supply and the voltage regulator in dependence upon increasing values of supply voltage.

Abstract: A fuel injector comprises a valve needle spring biased towards a seating. The valve needle defines a thrust surface orientated such that the application of fuel under pressure thereto applies a force to the needle urging the needle away from the seating. A valve is provided to control the supply of fuel to the thrust surface.

Abstract: An electro-hydraulic braking system for motor vehicles. The system includes a brake pedal and a braking device associated with at least one vehicle wheel which is brought into communication with an electronically controlled valve arrangement in order to apply hydraulic fluid under pressure to the braking device. A fluid pressure accumulator fed by the pump provides a pressurized hydraulic fluid which can be passed to the braking device by way of an electronically controlled valve arrangement in order to apply hydraulic fluid in proportion to the driver braking demand as sensed at the brake pedal in the “brake by wire” mode. A first device within the system provides a level of fluid pressure supply within the electro-hydraulic system whose highest value is less than that sufficient for the maximum possible braking demand level which may be required.

Abstract: A nozzle for a fuel injector comprises a nozzle holder, a tip secured to the nozzle holder, the tip being provided with at least one outlet opening, and a feature provided on the tip providing an indication of the position(s) of the opening(s).

Abstract: A control method for use in controlling the operation of a turbo-charged engine comprises the steps of: using at least one engine parameter to derive a predicted transient air pressure value; sensing an actual air pressure value using a pressure sensor; and comparing the actual air pressure value with the predicted transient air pressure value to determine a predicted boost pressure error. The boost pressure error may be used in determining whether or not the pressure sensor is operating properly. It may also be used in determining whether the engine is in a transient condition, allowing the improvement in the response of the turbo-charger and this reduces turbo-lag.

Abstract: A first screw body (58) is rotatively mounted around a screwing axis (C; C′, C″), that extends parallel to the axis (A) of the brake disk (10) in a housing axially arranged next to the brake disk (10) in the mounted position. A second screw body (66) is secured against rotation and linked to the first screw body (58) by a readjustment threaded coupling (68), so that both screw bodies (58, 66) form together a longitudinally adjustable tappet for exercising an actuating force on a brake shoe (22). A rotary body (42) can be rotated around its own axis of rotation (B) by means of an actuating member (38) in order to axially displace the tappet The axis of rotation (B) is at least approximately parallel to the brake disk. Linking gears arranged between the rotary body (42) and the first screw body (58) have a right-angle gear a drive and a coupling device (90) which transmit a limited torque for readjusting said brake shoe.

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 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 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 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.