Direct Ignition Coils

Showa Denso ISO 9001 Certificate

Modern engine designs have done away with the distributor and coil, instead performing the distribution function in the primary circuit electronically and applying the primary (low-voltage) pulse to individual coils for each spark plug. In some cars, the coils are mounted together in a ‘coil pack’; others utilize a coil located very near to or directly on top of each spark plug (Direct Ignition or aoil-on-plug). This avoids the need to switch very high voltages, which is very often a source of trouble, especially in damp conditions.