PWM for auto use

I am new to the group as well as new to electronics. I have a question dealing with a PWM that could be used in automotive service. I have done general research on the use of a PWM. What I find most is the use of operating an electric motor. My question concerns something I haven't learned enough about yet but deals with the voltage used to drive a motor verses the voltage used to open or close an automotive fuel injector (one). I am digging into modifications to my passenger vehicle that could improve fuel economy. I belive a PWM could be the answer for an idea I have. So, would the same output voltage from a PWM be utilized the same if used on a magnetic switch acting fuel injector as on an electric motor? The difference I see is the motor would dissipate the voltage where the magnetic switch injector would be different. The injector operates on a ground signal from the OEM Electronic Control Module. Would the circuit board output components be the same for both mechanical devices? Thank you for any help.

Posted by keninusa on 04/08/2009, at 19:54 GMT

PWM for auto use

The fuel pump motor in this case is often a simple on-off control by the system ecu via a 80 to 100 ohm coil relay. Often this system is also under timer control when the engine is not running but the ignition is still switched on as a safety feature. The fuel line is in a loop system from and return to the tank often stabilised at around 28 p.s.i by a seperate pressure regulator module.

Posted by Anonymous (varient412@yahoo.co.uk) on 28/01/2010, at 16:04 GMT