OT: 1972 911 Interference (Funny)
05-28-2002, 04:35 PM
#1
Burning Brakes
Thread Starter
Join Date: Nov 2001
Location: San Francisco Bay Area
Posts: 1,199
Likes: 0
Received 2 Likes
on
1 Post
OT: 1972 911 Interference (Funny)
Thought you guys might appreciate this 
I was just reading through the IEEE EMC Newsletter and stumbled across this article:
Some terms you might not know
EMC = Electromagnetic Compatability
EMI = Electromagnetic Interference
"In the early 1970's Porsche introduced a new fuel injection system, which encountered some EMI problems at around 150MHz. Evidently, RF interference could cause a failure in which hte electronic fuel injection system released fuel to all cylinders simultaneously, instead of releasing fuel to cylinders according to the firing order."
"One sunny Southern California afternoon in 1972, two EMC engineers were cruising the freeway in their 1968 Volvo. All of a sudden, EMC Engineer #1 says, "Hey EMC Engineer #2, that's one of those new Porsches that is susceptible to RF!" Having read the same technical brief that EMC Engineer #1 had read, EMC Engineer #2 quickly grabbed the microphone on his trusty 2 meter HAM radio set and let a barrage of RF energy loose. The shiny new Porsche, at that point almost ready to overtake the cruising Volvo, reacted immediately and violently. The sports car slowed and then surged and slowed again with a huge ball of fire exiting the exhaust system hehind the automobile. When EMC engineer #2 release the microphone key, the Porsche hesitated slightly and then recovered from its out-of-sync overdose of fuel. Once again, the little sports car was prepared to blow by the engineer's beloved Swedish sedan. Not Completely believing what he sa the first time, EMC Engineer #2 again keyed up his 2 meter set. Again, the Porsche hesitated and lurched with a fireball breathing from its tail pipe. Suddenly aware of the moral and legal implications of blowing up a fellow motorist, EMC Engineer #2 hastily released the microphone key. Although the Porsche recovered almost immediately, the driver was most certainly daunted by the experience and cautiously exited at the next off-ramp. One can only speculate about his conversation with the Porsche dealer. "I paid good money for this #%*@! sports car and it can't even pass a '68 Volvo on interstate 5!." "
Thought that was a funny story.
I was just reading through the IEEE EMC Newsletter and stumbled across this article:
Some terms you might not know
EMC = Electromagnetic Compatability
EMI = Electromagnetic Interference
"In the early 1970's Porsche introduced a new fuel injection system, which encountered some EMI problems at around 150MHz. Evidently, RF interference could cause a failure in which hte electronic fuel injection system released fuel to all cylinders simultaneously, instead of releasing fuel to cylinders according to the firing order."
"One sunny Southern California afternoon in 1972, two EMC engineers were cruising the freeway in their 1968 Volvo. All of a sudden, EMC Engineer #1 says, "Hey EMC Engineer #2, that's one of those new Porsches that is susceptible to RF!" Having read the same technical brief that EMC Engineer #1 had read, EMC Engineer #2 quickly grabbed the microphone on his trusty 2 meter HAM radio set and let a barrage of RF energy loose. The shiny new Porsche, at that point almost ready to overtake the cruising Volvo, reacted immediately and violently. The sports car slowed and then surged and slowed again with a huge ball of fire exiting the exhaust system hehind the automobile. When EMC engineer #2 release the microphone key, the Porsche hesitated slightly and then recovered from its out-of-sync overdose of fuel. Once again, the little sports car was prepared to blow by the engineer's beloved Swedish sedan. Not Completely believing what he sa the first time, EMC Engineer #2 again keyed up his 2 meter set. Again, the Porsche hesitated and lurched with a fireball breathing from its tail pipe. Suddenly aware of the moral and legal implications of blowing up a fellow motorist, EMC Engineer #2 hastily released the microphone key. Although the Porsche recovered almost immediately, the driver was most certainly daunted by the experience and cautiously exited at the next off-ramp. One can only speculate about his conversation with the Porsche dealer. "I paid good money for this #%*@! sports car and it can't even pass a '68 Volvo on interstate 5!." "
Thought that was a funny story.
