[GMCnet] Integrated EFI [message #329335] |
Tue, 20 February 2018 13:28 |
Ken Henderson
Messages: 8726 Registered: March 2004 Location: Americus, GA
Karma: 9
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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.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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Re: [GMCnet] Integrated EFI [message #329342 is a reply to message #329335] |
Tue, 20 February 2018 19:19 |
bwevers
Messages: 597 Registered: October 2010 Location: San Jose
Karma: 5
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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
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Re: [GMCnet] Integrated EFI [message #329364 is a reply to message #329363] |
Wed, 21 February 2018 08:29 |
Justin Brady
Messages: 769 Registered: April 2015 Location: Bell Buckle, TN
Karma: 11
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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
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