Injector Dead Time Measurement

Injectors require a certain minimum pulse time to begin to open, and to obtain minimum fuel flow. The time required for the injectors to begin to open is referred to as ‘Injector Dead Time”.

The injector dead time is dependent upon several variables such as the characteristics of the actual injector itself, plus external influences such as fuel pressure and particularly supply voltage.

The Mainline DynoLog system has provision for “Live” measurement of the injector dead time, at any engine speed (RPM) RPM and load (Torque),with compatible ECUs.

Setting of the injector dead time is usually provided by the aftermarket ECU tuning program by providing dead time compensation to account for the characteristics of the injectors the engine management system.

Without injector dead time compensation data, or having a fault that effects injector dead time, tuning and engine can be much more difficult and time consuming.

Being able to “see” your injector dead time can be invaluable for confirming correct injector dead time compensation by the ECU, or a fault unrelated to the ECU.

This is just another example of why Mainline DynoLog Dynamometers are simply light years in front of any other dynamometer system !