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How long is the injector pulse width?
Injector pulse width is the amount of time, measured in milliseconds (ms), that a fuel injector stays open (delivers fuel) during a cylinder intake cycle. The typical injector pulse width for an idling engine at normal operating temperature is between 2.5 and 3.5 ms.
What makes a fuel injector pulse?
The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.
What is minimum injector opening time?
The injectors are too large or the fuel pressure is too high (or both). That’s why your “Minimum Injector Opening Time” of 1.5 msec is being activated.
What causes high injector pulse width?
When the fuel injector flow becomes restricted or blocked the engine controller will attempt to increase the fuel flow by opening the injector for a longer period of time, increasing the injector pulse width.
What part turns the fuel injectors on and off?
The amount of fuel injected is controlled by a flap valve located in the engine’s air intake. The flap sits beneath the control unit and rises and falls in response to airflow – as you open the throttle, the ‘suck’ from the cylinders increases the airflow and the flap rises.
What is injector opening time?
Every injector is pressurized by fuel and the opening time is very short. The opening time is something between 1 mS to 10 mS depending on the manufacture of your system and the engine load. The time the injector is closed is between 50 mS and 100 mS (on idle).
What is injector dead time?
The “dead time” is just the amount of time from closed to opened that a certain sized injector takes to open under a certain, voltage and fuel pressure, and to be honest is NOT THAT IMPORTANT in reality, it’s one of those “fine tuning” things tht keeps a steady idle at night or when there’s a load on the electrical …