Re: Toyota Crisis Worsens, Cars Pulled From Rental Fleets, A Million More Cars Recalled
I don't follow your logic here. You seem to be assuming that all DBW systems are designed like the Toyota system. I am not saying that.
My logic is this:
The toyota DBW pedal assembly contains a type of part that is not used in any non-DBW car. This type of part is tricky to design, and toyota or their supplier got the design wrong, causing the system to fail.
Since this type of part is only used on DBW cars, and it failed on these toyotas, then this failure would not have occured if Toyota had not used DBW.
no! The friction part is only used on DBW cars. There is nothing like it in non-DBW cars.
That is correct. Toyota may not have needed to add the friction part to their DBW systems, but they did, and it's causing them grief. Grief they would not have had if they did not use DBW in the cars. (or if they did not use this particular design of throttle pedal). There were two ways to prevent it, one was to be even more careful with the design, another was to eliminate the (what I feel is) unnecessary DBW system completely. My point is that DBW requires way more care in design, and there are many more opportunities to screw it up, and the throttle is a part of a car that requires that it be done RIGHT. Risk management....think about it. Why use a system that has many more possible failure modes when you don't really have to?
I'm not presuming anything.
Originally posted by dieselgeek
I don't follow your logic here. You seem to be assuming that all DBW systems are designed like the Toyota system. I am not saying that.
My logic is this:
The toyota DBW pedal assembly contains a type of part that is not used in any non-DBW car. This type of part is tricky to design, and toyota or their supplier got the design wrong, causing the system to fail.
Since this type of part is only used on DBW cars, and it failed on these toyotas, then this failure would not have occured if Toyota had not used DBW.
Meanwhile, the problem is either bad engineering, or bad manufacture, of a part that's nearly identical to the same part in a cable throttle system.
You CANNOT say that "All DBW throttles incorporate a friction device" either because, nobody here has proven that as fact either. The pedal in the DBW throttle in my truck is a simple spring with a potentiometer, there is no dampener or friction device that I can find. It's a simple pivot with a bushing attached to a TPS. Thus, this isn't true for "All DBW systems"
If you want to PRESUME the statement "Drive by wire caused Toyota's problems" then fine, that's your opinion. But it is nowhere near close to fact because it includes broad assumptions. Again, sorry if that upsets you but - this is crystal clear.
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