Abstract: A pump and purge valve configuration may include an inlet, an outlet arranged downstream of the inlet and defining a portion of an operational fluid pathway, and a pump mechanism arranged along the operational fluid pathway between the inlet and the outlet. The pump and purge valve configuration may also include a purging fluid pathway having a purge inlet in fluid communication with the operational fluid pathway at a point downstream of the pump. The purging fluid pathway may extend from the purge inlet to a relief point. The pump and purge valve configuration may also include a purge valve arranged along the purging fluid pathway. The purge valve may be configured to remain open unless a triggering fluid pressure develops in the pump mechanism.

Abstract: A pump and purge valve configuration may include an inlet, an outlet arranged downstream of the inlet and defining a portion of an operational fluid pathway, and a pump mechanism arranged along the operational fluid pathway between the inlet and the outlet. The pump and purge valve configuration may also include a purging fluid pathway having a purge inlet in fluid communication with the operational fluid pathway at a point downstream of the pump. The purging fluid pathway may extend from the purge inlet to a relief point. The pump and purge valve configuration may also include a purge valve arranged along the purging fluid pathway. The purge valve may be configured to remain open unless a triggering fluid pressure develops in the pump mechanism.

Abstract: A fuel injection system includes an injector body that defines a nozzle outlet connected to a nozzle supply passage having a flow restriction. A source of fuel at a supply pressure is in fluid communication with the nozzle supply passage. A needle valve member is positioned in the injector body and is moveable between an open position in which the nozzle outlet is open, and a closed position in which the nozzle outlet is blocked. The supply pressure is of a magnitude and the flow restriction is of a size that the needle valve member moves cyclically between its closed position and its open position.

Abstract: A bounce depression device 29 for a high speed poppet valve 11 in a electronically controlled hydraulically operated unit fuel injector 1 comprises a poppet valve 11 with a central bore 35 and a counter bore 33 having a flat inner end 37 and a annular grove 39 on the other end which receives a retainer ring 41 that holds a plurality of flat washer shaped damping rings 31 in the counter bore 33 to absorb momentum by rattling and bouncing as the poppet valve 11 seats to prevent the poppet valve 11 bouncing off the seats 13 and 15.

Abstract: A fuel injector having a plurality of spaced apart apertures modifies the rate of fluid flow of the fuel injectors. The apertures are sequentially opened by movement of the intensifier piston in a piston bore passing actuating fluid flow at an increasing rate to a piston pressure chamber defined by a first end surface of the intensifier piston, a closed end surface of the piston bore and the cylindrical surface of the piston bore. The opening of the spaced apart fluid delivery apertures provide a stepped rate trace. The stepped rate trace allows less fuel to be injected into the combustion chamber by injecting the fuel slower during the early phase of the combustion process where combustion is less harsh.

Abstract: An emergency extrication appliance as disclosed, which is adapted for the extraction of an injured person from an automobile or other confined location. The appliance comprises a two part cervical collar which is adapted to encircle and immobilize the person's head and neck. Also, the appliance includes a relatively thin body support which includes a lower body portion adapted to encircle the lower back and chest, and a head support portion adapted to overlie the back of the neck and at least a portion of the head. A number of neck straps are mounted on the head support portion, with the straps including Velcro type fastening means for releasably interconnecting the same to the cervical collar and so as to substantially preclude relative movement therebetween. A single reinforcing stay extends vertically along the head support portion and lower body portion of the body support member, such that the appliance acts to effectively immobilize substantially the full length of the spine and the head of the wearer.