Label: Musiques Nouvelles - MN 010 • Format: Cassette Album C60 • Country: UK • Genre: Electronic • Style: Abstract, Industrial, Experimental
If the computer is in the transmission, how does it decide to shift? What about it's in the Telesis In Auto Mechanica - A.C.F.* - Time Shift It depends on the transmission manufacturer and the model of the transmission. In the '80s and before, an automatic transmission was controlled by a vacuum actuator and a cable which ran to the throttle called a TV cable. Later in the '90s, when electronic engine management came into play, transmissions started being controlled by a Telesis In Auto Mechanica - A.C.F.* - Time Shift computer in the car or Powertrain Control Module - PCM.
This controlled a lot of aspects of the tranny, to include shifting, line pressures, torque converter lockup and other operations. Shifting the gears is dependent on several different factors, such as engine load, throttle position, speed of the vehicle, engine speed, etc. Every manufacturer does it a little different, so I won't try to go into it.
Load on Engine:If load is too high, then it must use a lower gear to obtain the required pull. Like on slopes, or a heavier car. Pedal position:If your pedal is floored, you directly order the engine to downshift for quick power.
Apart from this there are some automatics there which learn your driving patterns. Then there are AMTs. Home Questions Tags Users Unanswered. In an automatic transmission, what decides to change gears? Asked 5 years, 6 months ago. Active 5 years, 6 months ago. Viewed 12k times. Without reading the wiki, is it vacuum and engine speed? I had Nicolasa - Pachito Alonso - Ritmo Pilon the wiki, and it didn't help me.
That's why I asked the question Engine speed : Only if engine spped is high enough it can shift to next gear Speed of car:It will not downshift unless spped of car is lesser, else the engine will over rev Load on Engine:If load is too high, then it must use a lower gear to obtain the required pull.
Good point about the AMT. A holiday carol for coders. Featured on Meta. Update: an agreement with Monica Cellio. Linked Related Hot Network Questions.
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