Lucas Industries Public Limited Company

Lucas Industries Limited

Roy Haworth

Michael F Russell

Adrian R Tolliday

Simon J Lacey

An apparatus for providing an indication of the level of smoke in an engine exhaust includes a radiation sensor which is mounted in a combustion chamber of the engine. The signal produced by the sensor during combustion of fuel is processed to produce a signal representing the period of combustion of fuel in the cylinder and this signal is applied to a map which contains recorded data showing the relationship between the combustion period and the level of smoke. From the map the level of smoke can be obtained.

Smoke measuring apparatus

A fuel injection nozzle for supplying fuel to a compression ignition engine includes a holder which accommodates a spring which biases the valve member of the nozzle to the closed position. A spring abutment abuts against a surface of the holder and a blind bore is formed in the holder in the vicinity of the surface. A transducer is located in the bore and produces an electrical signal when an increase in the stress in the spring occurs as the valve member is moved to the open position.

Fuel injection nozzle

A sensing device for use in an internal combustion engine to sense combustion of fuel in a combustion chamber of the engine includes a tubular body part in which is located a radiation conductive element one end of which is exposed to the combustion chamber in use. On the other end of the element is a sensor which in use is connected in an electrical circuit. The sensor is responsive to radiation transmitted along the element from the flame in the combustion chamber. The element is held in a bore of the body part by a visco-elastic lining which also provides a gas tight seal and acts to cushion the element against vibration.

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Greenford, United Kingdom

Roy Haworth