摘要:
A fuel injection pump assembly in which fuel delivered from individual cam lobe driven pump plungers is controlled by an engine driven drive shaft rotated control valve, the position of which, relative to the spill ports from the plungers, is controlled by means of a hydraulic governor. A separate governor cam lobe is used to also actuate the plungers whereby fluid supplied to the hydraulic governor is at a flow rate proportional to pump speed and therefore, engine speed.
摘要:
A shelving assembly having vertical standards and brackets thereon suspending shelves therebetween by mounting connectors projecting into openings in the brackets. These openings, when in the form of recesses in the upper edge of the brackets, are configured with an overhang lip to prevent shelf tipping. The connectors have a steel core preferably jacketed with polymer, and peripheral grooves configured to interengage with the plate type brackets. The connectors have three such grooves so that they can serve to support one end of one shelf on the bracket or the adjacent ends of two shelves on a common bracket. Glass shelves are mounted using socket shelf mounts having a socket to receive the connectors, an outer shelf support surface, and a resilient clip for attachment to the shelf.
摘要:
An electromagnetic unit fuel injector for use in a diesel engine includes a housing with a pump therein defined by an externally actuated plunger reciprocable in a bushing and defining therewith a pump chamber for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is also connected to a fuel chamber via a solenoid actuated, normally open, pressure balanced control valve controlled passage to permit the ingress and egress of fuel. The solenoid and control valve are located concentrically with respect to the plunger. During a pump stroke, the solenoid can be energized to move the valve in position to block flow from the pump chamber to the fuel chamber so as to allow the pressurization of fuel by the pump to effect discharge of fuel from the injection nozzle.
摘要:
An electromagnetic fuel injector has an axially extending guide pin fixed to an armature and slidably received in the solenoid pole piece to axially guide the armature during its movement thereof relative to the solenoid pole piece. The guide pin has a sleeve supported thereon for engagement at one end with a surface of the armature and extending at its opposite end axially outboard the armature for abutment against the solenoid pole piece whereby to serve as an abutment stop so as to establish a predetermined minimum working air gap between the opposed working surfaces of the armature and an associated solenoid pole piece. An armature return spring has one end thereof in abutment with a free end of the guide pin to bias the armature in an axial direction away from the solenoid pole piece and has its opposite end in abutment against an externally accessible abutment screw whereby the force of the armature return spring can be adjusted as desired. In a preferred embodiment, an additional spring is operatively positioned to assist the armature return spring.
摘要:
A fuel injector nozzle assembly is provided in one embodiment with a nozzle body having a bored opening extending therethrough from an inlet end of the nozzle body to a spray tip end thereof, a valve being mounted in the nozzle body to extend through the bore to form with the nozzle body an annular fuel chamber, one end of the fuel chamber being connectable by a passage means in the inlet end of the nozzle body to a source of pressurized fuel, the valve having its stem end fixed to the inlet end of the nozzle body and having its head positioned to abut against a valve seat in the spray tip end of the nozzle body in a normally closed position, the stem of the valve intermediate its ends being of reduced diameter relative to the head whereby fuel, at a predetermined pressure in the fuel chamber, will effect longitudinal deformation, that is, lengthening or stretching of the valve a limited amount without causing permanent deformation whereby to cause unseating of the valve from the valve seat to permit the discharge of fuel from the fuel chamber out through the spray tip and, as the pressure of fuel in the fuel chamber is reduced, the valve will then contract to again effect seating of the valve.In an alternate embodiment, the portion of the nozzle body forming the exterior wall of the fuel chamber is of reduced thickness and the inside diameter of the bore is of a predetermined size relative to the head of the valve whereby the nozzle body, per se, will stretch relative to the valve to thereby effect unseating of the valve head relative to the valve seat in the nozzle body when fuel above a predetermined pressure is supplied to the fuel chamber.
摘要:
A fuel injection nozzle assembly includes a nozzle body and a compressible valve therein having a valve head that is normally in loaded abutment against a valve seat in the nozzle body to block the discharge of fuel therefrom, the compressible valve further including a stem extending from the valve head which is fixed at its opposite end to the valve body, the stem including a thin wall, tubular compressible stem portion next adjacent to the valve head and connected thereto by an annular shoulder, the compressible stem portion having an outside diameter substantially greater than the diameter of the valve head with the thin wall of the compressible stem portion being sized so that when fuel, in an annular fuel chamber in the nozzle body encircling the compressible stem portion, at a high fuel pressure acts on the annular shoulder, it will cause a reduction in the normal longitudinal extent of the compressible valve to effect unseating of the valve head from the valve seat and, when the fuel in the fuel chamber is at a reduced pressure, the valve head is seated against the valve seat.
摘要:
A shelving assembly having vertical standards and brackets thereon suspending shelves therebetween by telescopic mounting connectors telescopically fitted into and projecting from openings as in reinforcing beams recessed into the bottom of the shelves. The mounting connectors extend into openings in the brackets. These openings are in alternate pairs to allow the shelf to be in either of two positions, preferably horizontal or tilted diagonally. The connectors have peripheral grooves configured to interengage with the plate type brackets, there being three such grooves so they can support one end of one shelf on a bracket or the adjacent ends of two shelves on a common bracket. Glass shelves can be mounted on these book end brackets using socket shelf mounts having a receiving socket in a body, an outer shelf support surface, and a resilient clip for attachment to the shelf.
摘要:
A diesel unit fuel injector includes a pump assembly having an externally actuated plunger reciprocable in a bushing which with the plunger defines a pump chamber, with flow therefrom during an injection cycle portion of the pump stroke being directed to a fuel injection nozzle of the assembly. The injection nozzle includes a needle type differential area injection valve that is normally biased to a valve closed position by a valve return spring which is positioned in a spring chamber and which is operatively connected to the opposite end of the injection valve. Passage means, including orifice passage are used to direct spill flow from the pump chamber at the end of an injection cycle to the spring chamber to effect closure of the injection valve at a valve closing pressure which is greater than the valve opening pressure so that the pressure of the discharge of fuel at the end of an injection cycle is relatively great whereby to effect increased penetration of the discharged fuel into the associate combustion chamber of a diesel engine.