______ 
| ___ \
| |_/ /
| ___ \
| |_/ /
\____/ 
       
       

  _____ 
 |_   _|
   | |  
   | |  
  _| |_ 
 |_____|
        
        

         
         
 ##   ## 
 ## # ## 
 ####### 
  #####  
  ## ##  
         

         
         
 ##  ##  
 ##  ##  
 ##  ##  
  ####   
   ##    
         

  _____ 
 | ____|
 |  _|  
 | |___ 
 |_____|
        

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
'''transmission related notes''' GenBoard/VerThree could control automatic transmission: HW (input, output and numbercrunch-power) is sufficient but it would require about 1000..2000 (estimated) lines of code (read: not implemented yet). ---- '''Cooperating with factory autotrans''' Many automatic gearboxes are '''individual units''', that only '''need some''' signals from the engine (or '''signals common with the engine'''): * RPM (or they measure RPM of the input shaft themselves) * TPS signal: this is always needed for an automatic transmission * CLT or oil temperature * VBatt (for solenoid current control), they usually measure VBatt themselves Some automatic gearboxes share the ''brain'' with the engine (ECM controls automatic gearbox solenoids). This is rare, but getting more frequent. Such a beast needs all signals that engine management requires. It's not tricky to get the inputs to unit, and fake resistors on injector outputs (if it detects injector current, to make it believe injectors are there). however such a unit usually instructs (with an internal command signal) the engine to decrease torque for a moment while switching. This is usually * minor issue for planet-gear autotrans, but * huge issue for sequential gearbox (like the ones used on F1 and their manual cousins on motorcycles) You need to look up the manual of the gearbox to find out more. The popular 40L60E and 40L80E series feature an individual brain, easy to get working with an aftermarket ECM (see MembersPage/ChrisGerhardt). ---- '''Gearbox control''' In modern trucks the manual gearbox is operated electronicly so its a manual gearbox shifting automaticly. It is theoretically (!) possible to have GenBoard control the gearbox. benefits are: * no powerloss cause there's no power converter. * fast and comfortable changing of gears. * because shifting is optimal and always the same way the gearbox is operated wear, tear and driver abuse can be roled out or being brought to a minimum. Disadvantage: * no driver interfearance in shifting (well, buttons can be provided) Inputs: revs, MAP(load), TPS outputs:clutch Servo motor controller,forward backward gearbox lever servo motor and for left right lever control. Concerns: * number of outputs and current capabilities (Econoseal-PCB likes max 10A at 85C) * complex software (!!) ---- Tunable TCU ('''T'''ransmission-'''C'''ontrol-'''U'''nit)s: * http://www.enginecontroller.com/modules.php?name=Content&pa=showpage&pid=4 See also: GearBox
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.