Abstract: An arrangement for supplying high pressure fuel to a plurality of fuel injectors includes a housing defining a fuel chamber. The chamber is provided with a flow inlet from a high pressure fuel source and forms a first portion of flow path of the fuel, the chamber being fluidly connected to a conduit providing a second portion of flow path. The conduit has a plurality of outlets adapted to provide flow of high pressure fuel from the chamber via the conduit to a corresponding plurality of injectors via respective first outlet flow conduits. The second portion of flow path is substantially narrower than the first flow path, and includes a pressure sensor located in or adjacent to the conduit.

Abstract: A rocker arm includes an outer arm having a first wall and a second wall and an inner arm which selectively pivots relative to the outer arm about a pivot shaft axis of a pivot shaft based on positioning of a lock pin. A lost motion spring includes an outer arm tang grounded to the outer arm and an inner arm tang grounded to the inner arm. A roller shaft is supported by the inner arm and extends toward the first wall. The roller shaft carries a roller which follows a camshaft. A roller retainer is carried by the roller shaft and is located between the roller and the first wall and includes a surface with which the inner arm tang is engaged to ground the lost motion spring to the inner arm, a roller shaft aperture containing the roller shaft, and a pivot shaft aperture containing the pivot shaft.

Abstract: An electrical connector assembly of a fuel injector includes a body with external walls defining an internal volume and an internal wall dividing the connector in a first part adapted to be fixed in a complementary engagement with the body of the injector and, in a second part adapted to receive another electrical connector. The electrical connector assembly also includes at least one electrical terminal extending through the internal wall from an inner extremity protruding in the inner volume of the first part of the body, to an outer extremity protruding in the outer volume of the second part of the body. The outer extremity is shaped to receive in a complementary engagement an electrical terminal of said another electrical connector. The connector assembly is adapted to be in fluid communication with the back leak return conduit of the injector.

Abstract: An apparatus for orienting a partially coated spherical-object includes a pedestal, a camera, and a controller. The spherical object contains a coating over a portion of a surface. The coating defines a spherical-cap, and the spherical cap defines a polar-axis. The polar-axis is oriented normal to a plane defining a base of the spherical cap, wherein an intersection of the plane and the surface defines a boundary line. The pedestal retains the spherical object and selectively rotates the spherical object about a longitudinal axis of the pedestal. The camera captures an image of the spherical object on the pedestal. The controller is in communication with the pedestal and the camera. The controller is operable to control the rotation of the pedestal, detect the boundary line in the image, and determine when the pedestal has positioned the spherical object to cause the boundary line to have a zero curvature.

Abstract: A rocker arm includes an outer arm and an inner arm which selectively pivot relative to each other. A lock pin moves between a coupled position in which the lock pin prevents the inner arm from pivoting relative to the outer arm past a predetermined in a first direction and a decoupled position in which the lock pin permits rotation past the predetermined position in the first direction. A lost motion spring biases the inner arm to pivot relative to the outer arm in a second direction which is opposite of the first direction. A travel stop extends along a travel stop axis and has a travel stop surface such that the extent to which the inner arm pivots relative to the outer arm in the second direction is dependent upon the rotational position of the travel stop about the travel stop axis.

Abstract: A fuel injector includes a needle that can move between an entirely open position and a closed position is provided with a device for identifying the position of the needle, in which an electrical circuit is closed in the two extreme positions, the needle being in electrical contact with ground, the circuit being open in any other intermediate position of the needle, the needle not being grounded.

Abstract: A mobile valve member designed to be arranged in the nozzle body of a fuel injector, extends along a main axis and includes a piston formed of a first male cylinder of effective diameter forming the top end of the mobile member and of a second cylinder provided with an internal cylindrical bore of the effective diameter and a shutoff member including a male cylindrical shaft of the effective diameter that fits slidingly in the internal bore, and of a member extending as far as a pointed end provided with a mobile seat and forming the bottom end of the mobile member. The mobile member is hydraulically balanced and the length between the top end and the bottom end thereof is variable as a result of the sliding of the cylindrical shaft in the internal bore of the piston.

Abstract: A fuel system includes a fuel pump and a jet pump assembly. The jet pump assembly includes a first fuel passage defined by a first tube. The jet pump assembly also includes a second fuel passage which receives pressurized fuel from the fuel pump, the second fuel passage having a primary orifice centered about and extending along a primary orifice axis such that the primary orifice axis is directed into the first fuel passage and such that the primary orifice introduces a first flow of fuel into the first fuel passage. The second fuel passage also has a secondary orifice centered about and extending along a secondary orifice axis which is not coincident with the primary orifice axis and which is directed at an inner surface of the first tube and the secondary orifice introduces a second flow of fuel into the first fuel passage which impinges the inner surface.

Abstract: A subassembly for a high pressure fuel injector control valve includes a control valve member and a sleeve attached to a stem of the control valve member, the sleeve extending along at least a partial axial length of the stem of the control valve member, and wherein a clearance, provided between the sleeve and the control valve member, is in fluid communication with the control chamber such that during use, pressure compensation occurs, as the sleeve is caused to expand and seal against the control valve bore, thereby preventing leakage of fuel within the control valve assembly.

Abstract: A fuel injection system for an internal combustion engine includes an injector having a first orifice to which is tightly connected a pipe having a matching first orifice. Both orifices are surrounded with peripheral smooth surfaces that are complementary surfaces sealingly pressed against each other by a clamping plate.

Abstract: A high pressure fuel pump has a piston extending outside a pump head toward an end provided with a spring seat cooperating with a cam follower. A pump spring compressed between the pump head and the cam follower maintains the follower in contact with a revolving cam. The pump is further provided with a flexible tubular sealing sleeve engaged around the piston and extending between the pump head and the cam follower so that the internal space of the sleeve is sealingly isolated from the outer space.

Abstract: A rocker arm includes an outer arm with an outer follower and an inner arm which selectively pivots relative to the outer arm, the inner arm having an inner follower. A lost motion spring biases the inner arm to pivot relative to the outer arm. A lock pin which slides between a coupled position and a decoupled position. A pivot shaft includes a first portion a second portion centered about a first pivot shaft axis and a third portion located between the first portion and the second portion that is centered about a second pivot shaft axis which is parallel to, and laterally offset from, the first pivot shaft axis. The third portion supports the inner arm.

Abstract: A method for molding a connector which includes a connecting element having a cylindrical body and, one arm extending along an arm axis for the L-shaped connector or, two arms extending along two different arm axes for the T-shaped connector, the body being capable of being connected to an injector, and each arm being capable of being connected to the end of a pipe. The molding method includes a) providing a mold having a cavity for a T-shaped connecting element, the cavity including a cavity for a body and two cavities for arms and b) arranging an insert in the cavity for one of the two arms when an L-shaped connecting element is to be molded.

Abstract: A rocker arm includes an outer arm defining a bore; an inner arm which pivots relative to the outer arm, the inner arm defining a stop surface; a lost motion spring which biases the inner arm to pivot relative to the outer arm in a first direction; and a lock pin that slides within the bore between a coupled position in which the lock pin prevents the inner arm from pivoting relative to the outer arm past a predetermined position in a second direction which is opposite of the first direction and a decoupled position in which the lock pin permits the inner arm to pivot relative to the outer arm past the predetermined position in the second direction; such that the lock pin and the stop surface act together to limit the extent to which the inner arm pivots relative to the outer arm in the first direction.

Abstract: An electrical connection includes a first electrical conductor assembly having a first electrical conductor with a first electrical conductor surface and a second electrical conductor assembly having a second electrical conductor with a second electrical conductor surface which is engaged with the first electrical conductor surface such that the second electrical conductor assembly and the first electrical conductor assembly reciprocate relative to each other along a path. The first electrical conductor surface and the second electrical conductor surface provide electrical communication between the first electrical conductor assembly and the second electrical conductor assembly along the path. The second electrical conductor surface has a first area of gold having a first magnitude of hardness which engages the first electrical conductor surface and also has a second area of gold having a second magnitude of hardness which is greater than the first magnitude of hardness.

Abstract: A fuel pressure regulator includes a housing having a housing bore and a housing inlet; a piston located within the housing bore such that the piston and the housing bore define an accumulation chamber and such that the piston moves between a first piston position where the accumulation chamber is minimized in volume and a second piston position where the accumulation chamber is maximized in volume, the piston having a piston bore with a piston inlet and a piston outlet and a valve seat defined therebetween; a piston spring which biases the piston toward the first piston position; a valve closure which moves between a seated position which prevents fluid communication from the piston inlet to the piston outlet and an unseated position which provides fluid communication from the piston inlet to the piston outlet; and a valve closure spring which biases the valve closure toward the seated position.

Abstract: A fuel injector includes an injector body with a bore; an injector needle located within the bore and engageable with a needle seat to control fuel injection through an injector outlet; an armature member, the armature member being engageable with an armature seat on the injector needle, the injector needle in part and the armature member in part defining a control chamber; an actuator arrangement arranged to control fuel pressure within the control chamber such that fuel pressure variations within the control chamber controls movement of the injector needle relative to the needle seat wherein the actuator arrangement is arranged to be capable of moving the armature member from a seated position in which it engages the armature seat to an unseated position in which the armature member has moved relative to the armature seat in order to bring the control chamber into fluid communication with a low pressure drain.

Abstract: The present application relates to a pump unit for a fuel injection system. The pump unit has a low pressure fuel supply line and a high pressure fuel outlet. A pumping chamber having a plunger is operable to perform a pumping cycle comprising a pumping stroke and a filling stroke. The pump unit also includes an inlet valve having an inlet valve member movable between an open position for permitting the supply of fuel to the pumping chamber from the low pressure fuel supply line and a closed position for inhibiting the supply of fuel from the pumping chamber to the low pressure supply line. An outlet valve is provided in the high pressure fuel outlet. The pump unit also includes a means for latching the inlet valve member in its open position. The present application also relates to a method of operating a pump unit.

Abstract: A data-compression system for compressing and storing sampled data from an electronic control unit (ECU) in an automated vehicle includes an input and a controller. The input receives and samples a signal during a time-interval to provide a frame of sampled-data. The controller is in communication with the input. The controller is configured to capture the frame of sampled-data; determine an average-value of the sampled-data in the frame, and convert the sampled-data to percentage-data using the average-value as the basis for the conversion.

Abstract: A fuel injector includes control valve for controlling fuel pressure in a control chamber. The control valve includes a valve seat; and a valve member having a valve face for cooperating with the valve seat to control fuel pressure in the control chamber. A return line is provided for returning fuel from the control chamber. An armature connected to the valve member and an actuator is provided for actuating the armature. The armature is disposed in an armature chamber. A deflector is provided in the armature chamber to form a first sub-chamber and a second sub-chamber. The first and second sub-chambers are in fluid communication with each other via a first aperture. A pressure differential is established between the first and second sub-chambers when the valve face lifts from the valve seat promoting the flow of fuel from the second sub-chamber into the first sub-chamber through the first aperture.