Abstract: In a method and device for fuel injection intended for an internal combustion engine with a wide range of speeds of revolution and with high requirements for rapid response such as, for example, the engine in a motor cycle, the fuel injection to the internal combustion engine comprising an intake pipe (1) with at least one intake valve (2) and one or more injectors is controlled in such a manner that a first fuel injection in order to obtain a well prepared air/fuel mixture occurs early in the working cycle of the engine following the closure of the intake valve and a second fuel injection in order to obtain an optimal amount of fuel for the cycle, a process known as “transient compensation”, occurs late in the working cycle before closure of the intake valve.

Abstract: A method for generation of a low test voltage is used for the purpose of detecting an ionization current in the spark gap of an internal combustion engine. The voltage is generated by a controllable ignition magneto (5) arranged in order to charge (2) an ignition capacitor (4). The voltage is applied (3) to the primary side of the ignition device after generation of a spark and after the decay of the spark, after which the ionization current is detected (11) on the secondary side of the ignition device.

Abstract: A method of carrying out ionic current measurement in an internal combustion engine, using a lean fuel mixture which requires an increased burning duration, comprises the steps of (a) generating an ignition spark, (b) detecting initiation of combustion of the lean fuel mixture by the ignition spark, (c) cutting off the ignition spark within 20 microseconds after the initiation of combustion and (d) thereafter performing the ionic current measurement. The combustion start can be detected by measuring the change in the burning potential and/or the burning current, detected at the low-tension side of the secondary coil of the ignition system, using leak capacitances of the ignition coil, or by using a separate winding of the ignition coil. The ignition spark is cut off by a controllable ignition magneto.

Abstract: A method and apparatus for operating a positioning device for an adjustable device. The positioning device is mechanically actuated by a bearing connected to a pivotable armature that interacts magnetically with an electromagnet. The electromagnet is energized by current pulses generated by a computer program. The current pulses cause the air gap between the pivotable armature and the electromagnet to vary between open positions where the electromagnet is not magnetized, and a closed position where the electromagnet is magnetized. Several bearings and associated electromagnets may be arranged to operate the positioning device in one or more directions and at different torques and operating speeds for different directions of operation and different positions of adjustment.

Abstract: The diaphragm pump includes a housing having an opening defined at one end. A diaphragm is attached to the housing and extends over the opening. An inlet is defined in the housing for receiving a fluid and a driving element is attached to the housing and in driving engagement with the diaphragm to vibrate the diaphragm. An orifice is defined in the diaphragm to permit a discharge of the fluid therethrough when the diaphragm is in vibration. A spring is disposed within the housing for biasing a plunger towards the diaphragm so that the plunger sealingly engages the diaphragm.

Abstract: A method for controlling the trigger sequence in a flywheel magneto system including a magnet system for inducing a trigger pulse for a gate trigger current switch. When the trigger pulse is below a preset level N, the ignition system is triggered based on a voltage difference in the trigger pulse following the trigger pulse peak. As the rotational speed and amplitude of the trigger pulse increase, the triggering is advanced. When the trigger pulse exceeds the preset level N, the ignition system is triggered when the trigger pulse exceeds N. As the rotational speed and amplitude of the trigger pulse increases, the triggering is further advanced. A voltage threshold component is connected in series with the gate trigger current switch to avoid triggering interference.

Abstract: The invention has for its object to solve the problem associated with the use of a flywheel magneto for supplying ignition power to multiple cylinder combustion engines. The flywheel magneto according to the invention is composed of a flywheel (1) supporting magnets arranged in groups (2, 3, 4, 5-6, 7, 8, 9). The magneto flywheel (1) coacts with a multi-leg (11-20) core (10) of magnetically conducting material, the spacing or pitch of the core legs being such that the number of legs form an integer whereas half this number has to form an odd number. Within each group the magnets (2-9) are spaced in agreement with said core pitch. Said groups (2, 3, 4, 5-6, 7, 8, 9) are separated two pitches.

Abstract: The invention relates to an apparatus for controlling the triggering sequence in capacitive ignition systems for internal combustion engines. The induction achieved by a flywheel magneto usually results in three voltage wave halves, of which two (A,B) have one polarity and an intermediate one (C) has an opposite polarity. In the present case, the first voltage halfwave (A) is used for triggering voltage and the subsequent halfwave with opposite polarity (C) for the charging voltage. The subsequent last voltage halfwave is suppressed (B") to a level below the triggering level. This is achieved by arranging an inhibiting circuit (11-15) for the conventional triggering circuit (8,9,10) by charging (11) a further capacitor (12) during the charging phase itself, the capacitor (12) maintaining control voltage for a further thyristor (15) or triac, which is arranged to short-circuit the triggering voltage.