Abstract: A mounting arrangement for mounting a component, for example a fuel injector, in a desired position comprises a sleeve which surrounds part of the component and includes a screw-threaded end region. At a point spaced from the first end, the sleeve defines a groove arranged to receive a resilient member which cooperates, in use, with a groove provided in the component to secure the component to the sleeve.

Abstract: A printed circuit device comprising a printed circuit board carrying capacitors connected in use as common mode filters, a casing component supporting the printed circuit board and electrically grounded in use, and, a plurality of electrically conductive resilient contact elements resiliently engaging said casing component so as to make electrical connection thereto, each of said contact elements being physically secured to the printed circuit board and providing a ground path for a respective common mode filtration capacitor.

Abstract: The invention relates to a pressure accumulator which comprises a housing for accommodating fluid, a fluid connection for a fluid flowing into and out of the housing, as well as a spring arrangement against whose force a fluid flowing through the fluid connection is acting, characterised in that at least one part of the spring arrangement is formed by at least one part of the wall of the housing.

Abstract: A fuel injector comprises a valve needle biased into engagement with a seating by a spring, a fuel supply line arranged to permit fuel under pressure to be supplied towards the seating, a control chamber communicating through a restricted flow passage with the supply line, and a control valve arranged to control the fuel pressure within the control chamber, wherein the control chamber is defined, in part, by a surface associated with the valve needle, the surface being orientated such that the application of high pressure fuel to the control chamber applies a force to the surface acting in a direction opposing the action of the spring on the valve needle.

Abstract: A snubber valve is described which comprises a valve member slidable within a bore provided in a valve body. The valve member includes a region arranged to engage a seating, a spring biasing the valve member towards the seating. The spring engages a spring abutment region of the valve member. The valve member is provided with a passage which provides a flow path between a second end of the valve member and a part of the valve member between the first region and the spring abutment region.

Abstract: A fuel injector includes a tip member having a further member establishing an interference fit about an outer surface thereof at an injection end to minimize the possibility of fracture or other failure.

Abstract: An injector is disclosed which comprises a valve needle engageable with a seating. A spring urges the needle towards its seating, the spring engaging a spring abutment. A pressure backing member positioned within the injector is slidable relative to the spring abutment under the action of the pressure of fuel applied thereto. The pressure backing member is engageable with a surface associate with the needle to urge the needle towards its seating. The slidable pressure backing member reduces the pressure in the pumping chamber both prior to and after termination of the injection process. Also, the backing member maintains the pressure in a fuel supply passage of a low level to enhance the efficiency of the injector.

Abstract: An electric actuator for use in a vehicle power steering system includes an electric motor (20) and a gearbox (22). The electric motor (20) has a stator (26) and an armature (27) concentric with the stator (26) that is adapted to rotate about a common axis. A single common output shaft (40) extends through the actuator (14) to transmit torque from the motor (20) to a drive portion (70) of the output shaft (40) remote from the gearbox (22), from whence torque is transmitted to the gearbox (22) through a transmission portion (60) of the shaft (40). A clutch (21) may be provided between the motor (20) and the output shaft (40).

Abstract: A measuring apparatus comprises a sensor having a vibrating beam whose resonant frequency represents a parameter, such as pressure, to be measured. A light guide supplies light from a source to the beam and returns light reflected from the beam and from the end of the guide to an interferometer. The difference in light paths is greater than the coherent length of the light. The interferometer has first and second paths which differ in length by the difference in the light paths plus an odd number of quarter wavelengths of the light.

Abstract: A method of operating a fuel injector comprises the steps of applying a test waveform to a solenoid coil of the injector to cause a response by an armature assembly and measuring the response of the armature assembly while the test waveform is applied to the solenoid coil. A control waveform for the injector is developed as a function of the variation of the measured response of the armature from a selected operational characteristic. The developed control waveform is thereafter applied to the solenoid coil to cause the armature assembly to approach a nominal position.

Abstract: A fuel injector includes a solenoid having two armatures which are complementarily shaped to define a stepped armature gap.

Abstract: A fuel injector includes a barrel having an insert recess therein within which an insert is disposed. A facing surface of the insert is located opposite a base surface of the recess and forms a passage interconnecting a high pressure fuel passage and a valve bore. High pressure intersecting bores are thus avoided, leading to a reduction in structural failures.

Abstract: A fuel system is described which comprises a high pressure fuel pump arranged to supply fuel under pressure to a plurality of injectors. A backleak connection line is arranged to return fuel from the injectors to a fuel reservoir. A venturi pump is connected to the backleak connection line and is arranged to draw fuel from the line to reduce the fuel pressure therein.

Abstract: A contactor comprises first and second armatures which are urged towards contact-making positions by first and second windings, respectively. Each of the armatures displaces the other armature from its contact-making position when moving towards its own contact-making position. A controller actuates each of the windings before deactuating the other of the windings.

Abstract: An electrohydraulic braking system for motor vehicles with a brake master cylinder which can be actuated by a brake pedal. A wheel brake is coupled with at least with one vehicle wheel. The wheel brake can be connected with the brake master cylinder in order to subject the wheel brake to pressurized hydraulic fluid. A hydraulic pump, and a hydraulic pressure accumulator supplied by the pump, form an alternative source of pressurized hydraulic fluid which can be supplied to the wheel brake through a control valve arrangement in a controlled manner in order to subject the wheel brake to pressurized hydraulic fluid. A shut-off valve is arranged between the hydraulic pump and the hydraulic pressure accumulator in order to selectively make or shut-off a connection between the hydraulic pump and the hydraulic pressure accumulator to permit the hydraulic pump, in certain situations, to rapidly pressurize the braking system without having to simultaneously recharge the hydraulic pressure accumulator.

Abstract: A fuel injector solenoid includes an armature through which a high pressure fuel passage extends. Because the fuel passage is disposed within the armature, the solenoid can be made larger, thereby permitting greater armature forces to be developed.

Abstract: The vehicle battery controller includes a controller for interconnecting an auxiliary battery to a main battery for engine starting or charging. If the auxiliary battery voltage is lower than a first threshold before engine starting its subsequent use is inhibited. If the main battery voltage exceeds the auxiliary battery voltage by more than a predetermined margin, the auxiliary battery is not used for engine starting. When the engine is running and the charging system is operating, the auxiliary battery is disconnected when the common voltage is below a second threshold.

Abstract: The invention relates to an electronically controllable braking system for motor vehicles with a brake pressure generator unit (2) which can be actuated by a brake pedal (1), which supplies hydraulic fluid via a hydraulic fluid path (3) to at least one wheel brake (4) of the motor vehicle, a first electromagnetic valve arrangement (5a, 5b) which is arranged in the hydraulic fluid path between the brake pressure generator unit (2) and the wheel brake (4) for controlling the pressure build-up, pressure relief and pressure holding phases in the wheel brake, a motor-powered controllable hydraulic pressure source (7) which, in addition to or in lieu of the brake pressure generator unit (2), supplies hydraulic fluid to the wheel brake (4), and a motor-powered controllable auxiliary energy source (15, 30) which boosts an actuation of the brake pressure generator unit (2) by the brake pedal (1) or which effects an actuation of the brake pressure generator unit (2) in lieu of the brake pedal (1), with the controllable

Abstract: A fuel injector includes a center tube which conducts fuel flow. A flat-seat poppet valve surrounds a lower portion of the center tube and controls the application of pressurized fuel to first and second check end passages to assist in check closure.

Abstract: In a brake assembly in which an electric motor operates to apply the brake through a screw device, the screw device comprises a recirculating roller screw assembly which is adapted to be driven from the electric motor through a gear train, and the roller screw assembly comprises a fine pitch recirculating roller screw.