1. Warm-up correction
An advanced angle is used for the ignition timing when the coolant temperature is low to improve drivability. Some engine models conduct correction advancing in response to the intake Read more Corrective Ignition Advance Control
Ignition
Outline of Ignition Timing Control (Control of ESA)
The ignition timing control consists of two basic controls.
1. Starting ignition control
The starting ignition control is performed by conducting ignition at the predetermined crankshaft angle regardless Read more Outline of Ignition Timing Control (Control of ESA)
Basic Ignition Advance Angle
The basic ignition advance angle is determined using the NE signal and the VG signal or PIM signal. The NE and VG signal data used to determine the basic ignition advance angle is stored in the engine Read more Basic Ignition Advance Angle
Ignition Circuitry
The engine ECU determines the ignition timing based on the G signal, NE signal and the signals from other various sensors. When the ignition timing has been determined, the engine ECU sends the IGT signal Read more Ignition Circuitry
Ignition coil united with igniter
This ignition device consists of an igniter and an ignition coil that is integrated into a single unit. In the past, high-voltage current was sent to the cylinders via high-tension cords. Now, an ignition Read more Ignition coil united with igniter
ESA (Electronic Spark Advance)
The engine ECU, which receives signals from various sensors, calculates the ignition timing and transmits ignition signals to the igniter. The ignition timing is calculated continuously in accordance with Read more ESA (Electronic Spark Advance)
Spark Plug
The high voltage generated in the secondary winding of the ignition coil produces a spark between the center and ground electrodes of the spark plug in order to ignite the air-fuel mixture that is compressed Read more Spark Plug
Platinum/Iridium-tipped Plug
On the platinum-tipped and iridiumtipped spark plugs, the center electrode and the opposing ground electrode are covered with a thin platinum or iridium tip. Therefore, these spark plugs provide a longer Read more Platinum/Iridium-tipped Plug
Ignition Performance
The following factors affect the ignition performance of a spark plug:
1. Electrode shape and discharge performance
Rounded electrodes make discharging difficult, while squared-off or pointed electrodes Read more Ignition Performance
Automotive Igniter
Outline
The igniter carries out the precise interruption of the primary current that flows to the ignition coil in accordance with the ignition signal (IGT) that is output by the engine ECU.