Abstract: A powermeter module (29) for a cycle crank arm includes a single cavity (320), (420) or double sided cavity/cavities (20) extending into the crank arm (12), (312), (412) and arranged to house electronics components (30), (264), 364, (464) (motherboard) and power supply components (54), (254), (354), (364) (powerboard). The powermeter electronics components are electrically connected to strain gauges (28a), (28b) e.g. by hard wires and/or plug and socket arrangement. The powermeter module components are housed in the crank arm and accessible by one or more covers (40), (48), (240), (248), (340), (348), (440), (448) for maintenance access. An associated crank arm (10) has a first cavity disposed towards a crank axis end (12) of the crank arm. A transition zone E of the crank arm material extends from either end of the cavity/cavities to provide a path for normalisation of forces passing to the strain gauge(s).

Abstract: A cyclic cranked system data gathering system has at least one crank arm (30,50,116,117) operable by a limb of a user, at least one data gathering device (112,113) each mounted to a respective crank arm (30,50,116,117) and having at least one respective sensor (140,141). The or each device is configured to obtain data relating to force applied by the user through the respective crank arm and sensed by the respective sensor, and has a data transmitter capable of sending said data to a remote data logger, remote computer or to a display device. A method of determining power applied to a cyclic cranked system includes using a device (112,113) mounted on a crank arm (30.

Abstract: A fuel delivery injector for an internal combustion engine is provided. A fuel injector forms part of a device which provides a combined injection and ignition. The fuel delivery injector comprises first and second portions adapted to be detachably connected together. The first portion incorporates a valve structure having a valve member movable with respect to a valve seat for opening and closing a delivery port, and an actuating member operatively connected to the valve member. An actuator is provided in the second portion. When the first and second portions are connected together, the actuator is operably associated with the actuating member to provide an actuating assembly. Typically, the actuating assembly comprises an electromagnetic device in which the actuating member comprises a solenoid armature and the actuator comprises a solenoid coil, whereby connection of the first and second portions together completes assembly of the electromagnetic device.

Abstract: Disclosed is an injector nozzle through which fluid is delivered and which has a port (17) having an internal surface and a valve member (13) having a complementary external surface. The valve member (13) is movable relative to the port (17) to respectively provide a passage between the internal and external surfaces for delivery of fluid in the form of a spray. Alternatively, sealed contact of the surfaces will prevent the delivery of fluid. The nozzle includes a flow control body (30) located beyond an extremity of the port (17). The flow control body (30) has a control surface (33) arranged downstream of the port (17) in the direction of movement of the valve member (13). The control surface (33) is configured and positioned to promote the fluid spray established by the fluid issuing from the port (17) to in part follow a path determined by the shape of the control surface (33).

Abstract: Disclosed is an injector nozzle through which fluid is delivered and which has a port (17) having an internal surface and a valve member (13) having a complementary external surface. The valve member (13) is movable relative to the port (17) to respectively provide a passage between the internal and external surfaces for delivery of fluid in the form of a spray. Alternatively, sealed contact of the surfaces will prevent the delivery of fluid.

Abstract: A single solenoid coil controls the movement of a first and second armature respectively. Each armature is connected to a valve element for controlling a fuel supply and for controlling the delivery of the charge respectively. During the period of energization of the solenoid coil, both the first and second armatures are actuated, with the above noted valve elements being caused to open and closed in a predetermined sequence.