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2010 Toyota Camry

572 messages,  Last post on Nov 23, 2009 at 9:44 AM

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#160 of 572 Re: What else changed? [acdii] by wwest Apr 07, 2009 (8:01 am)
Replying to: acdii (Apr 07, 2009 7:19 am) I haven't driven many cars with TC, and even fewer in conditions wherein TC actually activated. But going all the way back to our '92 LS400 you just adequately described the operation, TC activated = NO GO FORWARD.   Our '92 has the ability to turn TC off and I developed the practice of doing just that each and every time I started it. On the subject of the Prius as an engineer I understand the TC design. Using the brakes for TC would be a poor compromise when you have linear functionality of the synchronous A/C drive system at hand.
#161 of 572 Re: What else changed? [thegraduate] by wwest Apr 07, 2009 (8:18 am)
Replying to: thegraduate (Apr 07, 2009 7:41 am) Basically, turning FWD & F/awd TC off, for many engineers, is a tad beyond engineering comprehension.   Why is TC activating, why has TC activated?   Because there is TOO much drive torque being applied to the driven wheels for the level of trcation available....   So think of TC, first and foremost, as an early warning of roadbed conditions.   Now that TC has activated what is, should be, your next move...??   Try to "feather" the throttle ever so lightly as to get moving forward without breaking through the "traction barrier". Try applying just enough torque to get the vehicle going forward.   Doesn't work...??   Call a tow truck or add traction. Tire chains..??   Most folks with even a minor level of experience driving in wintertime low traction conditions will tell you that disabling TC so as to allow unlimited wheelspin/slip will almost never be of much help. If the slippery "layer" is thin enough that the heat of a spinning tire can break/cut through, then yes. Or if you need to use wheelspin/slip to rock the car back and forth to get unstuck, then again, yes.   But keep in mind that had that Prius TC system allowed you to go "spinning out" across that intersection what would you have done if a quick turning maneuver had been required and then, ONLY THEN, you discovered the poor traction conditions...??   What then...!! Replies to this message: acdii (Apr 07, 2009 9:56 am) wwest (Apr 07, 2009 4:15 pm)
#162 of 572 Re: What else changed? [wwest] by acdii Apr 07, 2009 (9:56 am)
Replying to: wwest (Apr 07, 2009 8:18 am) On all cars EXCEPT the Prius, you still have some forward momentum or power being applied, the Prius TC=ZERO power being applied! Ask anyone who drives a Prius with stock tires how disconcerting it is to try to pull out into traffic or go up a hill when there is a little sand or gravel on the road and you wind up not going anywhere quickly. There are some out there who couldnt make it up their own driveway with stock tires! The whole point of giddy up and go is lost when it kicks in. In any other car a little wheel slip wont put you in a ditch, so the tire slips a little, but you still go. The TC on the Prius is HYPERSENSITIVE! Just a little slip of a tire kicks it in, and that is my whole point here. The same intersection with the Camry, the tires slip a little still, but the TC doesn't kick in at all, get the point? Prius Vs Camry, both Hybrids, same amount of traction, Prius no go, Camry go. No matter how you "feather" the Prius, when you have poor traction, it doesn't go because the TC prevents any power to be applied. In all the other cars, at least you still have some power being applied to the wheels still turn, they may still slip some, but they will still turn, NOT in the Prius, they STOP! Replies to this message: wwest (Apr 07, 2009 4:15 pm)
#163 of 572 Re: What else changed? [wwest] by dudleyr Apr 07, 2009 (2:05 pm)
Replying to: wwest (Apr 06, 2009 6:10 pm) I used to own a '63 corvair convertible, and tuck under was not even on the radar compared to an extremely happy rear end. Driving at speeds that a Camry could do easily (trying to stay on topic) the rear end would suddenly try to pass the front end when going around corners. To say it is like a Porsche is quite an insult to that brand.   Maybe your experience in driving a first generation Corvair is different.
#164 of 572 topic by pat HOST Apr 07, 2009 (3:11 pm)
2010 Camry anyone?
#165 of 572 Re: What else changed? [acdii] by wwest Apr 07, 2009 (4:15 pm)
Replying to: acdii (Apr 07, 2009 9:56 am) First, the low speed torque of those synchronous AC motors is nothing short of phenomenal. So it may just be that torque is being applied but results in wheelspin/slip so quickly that it only appears that no forward drive is available.   Also....The OEM tires are undoubtedly selected primarily for low rolling resistance. Someone correct me if I'm mistaken but I suspect that might also mean relatively low traction.   And while I have no exposure to the actual firmware code, the few FWD vehicles I have driven always seem to activate TC even before I had a sense of wheelspin/slip. But in reality it may very well be the tire selection that is making the difference.
#166 of 572 Re: What else changed? [acdii] by chicagocamry Apr 10, 2009 (6:07 am)
Replying to: acdii (Apr 07, 2009 7:19 am) I believe the 2010 Camry has a switch to turn off traction control, whereas the 09 didn't (for the optional traction control).
#167 of 572 When will 2010 Camry Hybrids start showing up in Dealer Showrooms by djs3 Apr 14, 2009 (8:50 am)
Does anyone know when the 2010 Camry Hybrids will start showing up in dealer showrooms? Some dealers in NJ are saying not until June but I get the sense that they don't know or are just pushing to sell the 2009 Hybrids they still have on the lot.   Thanks!!! Replies to this message: wwest (Apr 14, 2009 9:08 am) saidiadude (Apr 14, 2009 9:58 am)
#168 of 572 Re: When will 2010 Camry Hybrids start showing up in Dealer Showrooms [djs3] by wwest Apr 14, 2009 (9:08 am)
Replying to: djs3 (Apr 14, 2009 8:50 am) Given that the viability of DFI, Direct Fuel Injection, is now well proven technically, and clearly results in a rather dramatic rise in FE, I wouldn't buy any new vehicle, hybrid or no, until the engine is adapted to/for DFI.
#169 of 572 Re: When will 2010 Camry Hybrids start showing up in Dealer Showrooms [djs3] by saidiadude Apr 14, 2009 (9:58 am)
Replying to: djs3 (Apr 14, 2009 8:50 am) In LA county, the Camrys are stacking up on the dealer lot. They're not too anxious to receive more inventory, even though the new models have more to offer. One of the local dealers also mentioned that they would not have any 2010 Camry or Prius in their inventory system till Summer.

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