The capacitor has two functions. Its main function is to form a parallel resonant circuit with the ignition coil. During resonance, energy is repeatedly transferred to the secondary side until the energy is exhausted. As a result of this resonance the duration of the spark is sustained and so implements a good flame front in the air/fuel mixture. The capacitor's second function and consequent on the first, is to minimise arcing at the contacts at the point of opening by providing an alternative destination for the coil's discharge current. This reduces contact burning and maximizes point life. The Kettering system became the primary ignition system for many years in the automotive industry due to its lower cost, and relative simplicity.
To provide high voltage for the spark from the low voltage batteries, a 'tickler' was used, which was essentially a larger version of the once widespread electric . With this apparatus, the direct current passes through an which pulls open a pair of contact points, interrupting the current; the magnetic field collapses, the spring-loaded points close again, the circuit is reestablished, and the cycle repeats rapidly. The rapidly collapsing magnetic field, however, induces a high voltage across the coil which can only relieve itself by arcing across the contact points; while in the case of the buzzer this is a problem as it causes the points to and/or together, in the case of the ignition system this becomes the source of the high voltage to operate the spark plugs.
An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition oil-fired and gas-fired , , etc. The widest application for spark ignition internal combustion engines is in petrol road vehicles: cars (autos), four-by fours (SUVs), pickups, vans, trucks, buses.
Long spark plug life and reduced service complexity guarantee the highest reliability at the lowest cost. This is also ensured by on-board diagnosis, which continuously monitors the state of the entire ignition system.
Misfire detection and automatic trigger disk detection both come as standard features in the current version.
Parameterisation and diagnosis tasks can be carried out simply and clearly using the DcDesk communication program.
The two CAN bus interfaces make PHLOX II highly communicative, which enables seamless integration into the HEINZMANN engine management system. CAN bus and Modbus (RS485) interfaces are available for integration into customer-specific control systems.
Co-operation with the ARIADNE knock control system is particularly important here, as it allows the engine to be operated in the optimum efficiency range at all times - with the best possible protection.
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