Ignition Coils - Delphi Technologies

Ignition Coils

Although the fundamentals of an ignition coil have not changed, the demands placed onthem have. Tighter emissions regulations, less engine space and requirements for better fuel economy and higher ignition voltage – up to 45,000 volts in modern cars - means that coil technology is constantly evolving. As a leading OE manufacturer, Delphi has been at the forefront of many of these changes. With more than 100 years of OE ignition system expertise, we’ve created advanced magnetic design and modelling capabilities that are second to none. The result, an efficient coil design that delivers optimum engine performance, exhaust emissions and fuel economy.

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Optimum wire length

More wire generates differences in voltage, and in turn extra pressure, that can cause the breakdown of insulation and wire coatings. So, we tightly control the length of wire between adjacent primary and secondary windings. The result? Our secondary winding is thinner and much longer than the primary in order to get the output needed for the voltage to jump the spark plug gap.

Special vacuum technique

to remove air bubbles and imperfections from the epoxy

Winding

built directly onto the proprietary steel core for maximum efficiency

Primary and secondary coils

wound smoothly and tightly for optimum magnetic power

230-hour thermal cycle test

preventing wiring damage, insulation failures and short circuits

Smart processes

Ignition coil windings should also be evenly distributed and neatly wrapped. That’s why we wind both primary and secondary coils as smoothly and tightly as possible, directly onto a proprietary steel core. This approach helps to ensure maximum magnetic power in every turn of the wire. We also wind our secondary coils into more bays than many of our competitors for more consistent voltage distribution and reliable coil performance.

High quality components

We only ever use high-quality wires, and coating that resists the cracks, pin holes and imperfections that might cause other ignition coils to fail. A special Epoxy helps insulate these wires and keeps them separated. Gaps in the epoxy can reduce the integrity of the insulation, so we also employ a special vacuum technique to remove air bubbles and imperfections, and help prevent internal arching and shorts.

Delphi Leads in Ignition Coil Performance

Ignition systems are crucial for ensuring vehicle efficiency and promoting environmental sustainability. Delphi's ignition coils provide reliable, eco-friendly auto components. As we move forward, Delphi remains dedicated to setting the benchmark for ignition system performance, ensuring efficiency and sustainability in every vehicle we equip.

Igniting the Future

We conducted rigorous testing on five Delphi coils compared to other aftermarket and OE coils, and the results are in.

All five Delphi Ignition Coils passed 100% of the Electrical Performance tests, contrasting with other Aftermarket brands products, each facing at least one failure.

The results confirm Delphi’s lead in producing reliable, eco-friendly ignition solutions.

Check out the full test results for Delphi's Ignition Coils.