Lucas Industries Public Limited Company

Lucas Industries Limited

Derek Williams

Kenneth M Harris

Derek W Tomsett

A fuel supply system for an internal combustion engine includes a fuel pump which draws fuel from a supply tank. A subsidiary fuel tank receives fuel from the supply by way of a conduit which incorporates a one way valve. The inlet of the pump is connected to a pipe which extends to adjacent the lower wall of the subsidiary tank. The subsidiary tank can be pressurized with air to force fuel towards the pump and a safety valve is fitted to the subsidiary tank to limit the pressure build up therein.

Fuel supply system

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.

Fluid control valves

A liquid fuel injection pumping apparatus comprises a reciprocable pump plunger operable by a tappet assembly and a rotary cam. The tappet assembly includes a cylindrical body slidable within a bore, the body carrying a cross pin which supports a roller engageable with the cam. The cross pin has reclined ends so that if it moves axially while exposed beyond the end of the bore it will engage the bore and move axially to its correct position. With cams designed to give maximum plunger movement the pin is exposed for an appreciable time and heavy wear of the pin and bore can occur. The cam is therefore designed to allow outward movement of the plunger but then to hold the plunger until just before inward movement of the plunger is required to take place. Whilst the plunger is held the filling port of the pump is at least partly uncovered. The cam has a trailing flank which comprises a first part during which the plunger can move outwardly, a second part during which the plunger is held against outward movement and a third part which allows the full outward movement.

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Hertford, United Kingdom

Derek Williams