Integrated EFI

[Ken H.]

I've been real skeptical about the integrated EFI systems, like Fi-Tech,
because of my inherent EE's concern about the temperatures under automotive
hoods. Today I received one of the periodic product announcements from
Digikey (a top electronics distributor). This one covers very small
Automotive Power MOSFETs (electronic switches essential to such equipment
as ECUs). These are rated at 70A and UP TO 175*C=347*F!!!

Guess I haven't been paying attention since my re-retirement 24 years ago.
Maybe Y'All "Early Adopters" won't wind up beside the road after all.

Ken H.

 

[bill wevers]

It seems that the OEMs put their ECU behind the firewall or next to the door pillar.
My Explorer has the ECU connector poking out of the firewall over the engine.
But the critical components are in the passenger compartment.

--
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose

 

[sean kidd]

If these integrated ECU throttle body manufacturers were smart, they would/should incorporate the heat sink into the Venturi bore, this way you would
have a constant flow of "cold" air cooling it...
--
Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.

Colonial Travelers

 

[justin brady1]

The whole throttle body is an aluminum heat sink.
The issue isn't when its running, the vaporization of fuel and air flow keep it cool.
The issue is on a hot day after shutdown the heat soak. With no cooling air flow they get hot.

Whether that's a real issue or not remains to be seen. I would say not.
--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455