Lucas Industries Public Limited Company

Lucas Industries Limited

Kenneth M Harris

Godfrey Greeves

Derek W Tomsett

Peter A Collingborn

James C Potter

George Nicholas Felton

Edward R Lintott

Richard J Andrews

Christopher Stringfellow

Derek Williams

Miroslav Kriz

Fuel injection pump

A rotary distributor type fuel pumping apparatus has an annular cam ring having internal cam lobes which impart inward movement to a pumping plunger as the distributor member is rotated. A piston is movable in a cylinder to vary the angular setting of the cam ring and the piston is coupled to the cam ring by means of a member having a gear tooth profile which is located in a recess in the piston. The member is integrally formed with a mounting having a pair of oppositely extending arms which are individually secured against mutually inclined flats on the periphery of the cam ring.

Fuel pumping apparatus

A rotary distributor type fuel pumping apparatus for supplying fuel to an internal combustion engine has a distributor member an enlarged portion of which is formed with a transverse bore in which is mounted a pair of pumping plungers and blind bores located in side by side relationship with the transverse bores, the blind bores are located between the transverse bore and a body which supports the distributor member for rotation. The blind bores are in communication with drillings which lie in a plane containing the axes of the transverse bore and the blind bores and which extend from the end of the distributor member. The drillings interset the transverse bore that the ends of the drillings opening into the transverse bore are sealed by the pumping plungers.

A rotary distributor fuel pumping apparatus for supplying fuel to an internal combustion engine has a pair of pumping plungers housed in a diametrical bore formed in the distributor member. The plungers at a predetermined position during their inward movement open a spill path to terminate delivery of fuel through an outlet. The one plunger defines a plunger bore and the other plunger has an integral piston slidable therein. The piston has a relieved portion adjacent the other plunger which with the wall of the plunger bore forms a flow path from the pumping chamber the flow path communicating with a port at a predetermined position during the inward movement. The pumping chamber is of annular form and is defined between the plungers and the wall of the bore in the distributor member and the piston.

Fuel injection pumping apparatus

A fuel pumping apparatus of the rotary distributor type includes an accumulator volume into which fuel can be spilled to terminate delivery of fuel by the apparatus. The accumulator is defined by a movable member in the form of a sleeve which is slidable on an extension of the distributor member and has a closed end. The extension defines a seating with which can be engaged by a valve element defined by the sleeve. The extension and sleeve define an annular space connected to the pumping chamber of the apparatus and mechanical means is provided to effect initial movement of the sleeve against the action of a spring to lift the valve element from the seating to allow fuel flow into the accumulator volume.

A fuel pumping apparatus for supplying fuel to an internal combustion engine comprises a rotary distributor member mounting a pumping plunger slidable in a bore and moved inwardly to discharge fuel from the bore by cam lobes on the internal surface of a cam ring, the cam lobes acting on the plunger through a cam follower. A valve is provided which at a predetermined position during the inward movement of the plunger, is opened to lower the pressure in the bore and thereby to terminate fuel flow through an outlet. The valve is actuated by the cam lobes either from the cam follower or from the plunger.

An injection pump for supplying fuel to an internal combustion engine includes a plunger coupled to a cam follower which can be moved in one direction to effect fuel delivery by a multi lobed cam. The plunger is returned following fuel delivery by a return mechanism including two levers one of which carries a roller engaging the cam and the other of which engages the plunger. An adjustment shoe is carried by the one lever and is engaged by the other lever to enable adjustment of the backlash in the mechanism.

A liquid fuel injection pumping apparatus for supplying fuel to an internal combustion engine includes, a high pressure injection pump, an electrically operated spill valve which when open during a delivery stroke of the injection pump allows fuel to flow to a drain. The apparatus includes a control valve operable to control fuel flow through passage means to the injection pump, the control valve having three positions in the first of which there is unrestricted flow of fuel, in the second of which there is restricted fuel flow and in the third of which fuel flow is prevented. An angularly movable shaft is provided to close the spill valve and the control valve is connected to a shaft. The shafts exterior of the apparatus are connected to mechanisms whereby when the control valve is moved from the first position to the second position the spill valve will be closed thereby to allow the apparatus to supply fuel at a restricted rate.

Liquid fuel injection pumping apparatus

An electromagnetically operable fluid control valve includes a valve member slidable in a bore coupled to the armature of an electromagnetic device which includes a stator structure. The armature is of cup shaped form and is coupled to the valve member by a flange on the armature which is trapped between a pair of spaced plates carried by the valve member. The distance between the plates is determined by a spacer slightly thicker than the flange and smaller than the flange to allow for slight misalignment of the armature and the valve member.

Fluid control valves

A fuel pumping apparatus for supplying fuel to an internal combustion engine includes a pump having a body and a solenoid operated fuel control device. The current flow to the solenoid is controlled by a control circuit mounted on circuit boards located within an inner casing secured to the body. An outer casing surrounds the inner casing and defines a space which is connected with a fuel inlet, the space communicating with a fuel inlet of the pump. The flow of fuel through the space assists the cooling of the components of the control circuit.

A fuel injection pump of the reciprocating plunger type has a plunger having a head engaged by a tappet assembly. The tappet assembly includes a roller engageable with a cam lobe of a cam to impart inward movement to the plunger. Outward movement of the plunger is effected by a lever assembly having a forked end engaging the head and a roller for engagement with a cam lobe.

Reciprocating plunger fuel injection pump

A fluid control valve includes a valve member in the form of a sleeve which is shaped to co-operate with a seating defined about a bore in a valve body. The sleeve has a rod extending therein, the rod being coupled to an armature of an electromagnetic device including a stator having a winding. A resilient bush is located between the rod and the sleeve to allow limited further movement of the armature after the sleeve has engaged the seating.

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Maidstone, United Kingdom

Kenneth M Harris