truck electronic systems

what info do you need exactly?

Early engines, all manual... mechanical injectors etc.

New engines, all ECM controlled. Restrictive emission regulations.

 

High Dieseltech and welcome to the forum. As blanco said, electronics didnt come to diesel till mid/late '90's. Not exactly sure of years.
Some earlier motors had electric fuel supply/shut off solenoids.
Cant think of more for you at the moment... maybe more will come to me.....
There will be others in here that will give you much more info and help
Best to you with your paper...

 

what about series parallel switches for 24 volt starting with 4 six volt batteries
and
positive ground (i think it was a Western Star thing) early years
dash boards used to have all mechanical gauges and now they use multiplexing and all the gauges are run off a few small electrical wires
in the early 90's Delco was making brushless alternators
maybe you could also go into ABS which was non existant and now there is traction control, and anti roll over sensors which use some kind of yaw sensor.
not to mention electronically shifted manual 18speed transmissions that adjust the engine rpm and change the gear for you while you hold your right foot firmly on the floor !!!!!!!!!
hope your paper turns out well

 

Since the 50's to almost the mid 90's we had mech. engines. The only few electronic items on the unit would be the fuel shut off solenoid and the kysor engine shut down system. In the late 80's and early 90's Detroit came out with the series 60, cat came out with the PEEC system, and cummins had the celect. These were very primitive electronic engines, limited on what could be done. still very advanced compared from what they org. were. As the years progressed we developed new and faster ecms, very complex wiring systems to keep up with what people and emissions want. Our sensors and engine controls have changed. we went to J1708 datalink, and now we have j1939 multiplex systems for engine that send communication and control various components on the engine as well as the vehicle such as the turbo, dpf, as well as other modules on the truck xmsn, abs, body controlers, hvac systems it goes on.

Our fuel and air intake systems have came along way. Before we had an injection pump, fuel lines, fuel nozzles, governor springs, flyweights, air fuel ratio controls timing advanceds. Now we have solenoids, high pressure common rail fuel systems that are over 30,000psi, huei hydraulically actuated electronically controlled unit injector that uses high pressure engine oil to actuate the injector to inject fuel. It goes on with various systems out there

We have VGT Turbos, egr controls, obd diag, urea injection, dpfs, nox sensors, fuel dosers, a spark plug(haha)

But in all it has came along way from the 50's to today, and its always changing. Hopefully some of my mindless nonsense will help you out.

 

I think that a good resource for you to look at would be the army TM 9-8000, its full of info from the gassers of the 40's to the wonderful GM fuel injection on the 6.2/6.5L, plus it has info on 2/4 strokers, even turbines.

It also has a bunch of electrical info in it, since that is what you are looking for.

 

Check out the Antique Truck Historical Society (ATHS) and the Antique Truck Club of America (ATCA). Tons of historical information available there.

 

dieseltech: Best of luck on your exam!!!... And yes, please let us know how you did on your exam. I have confidence you will do well....