Im pretty sure that none of our readers who drives a car with a manual transmission has ever looked down at their shifter and exclaimed I sure wish this was a. Sale Results NEXT SALE STONDON HALL 27TH NOVEMBER 2017. We send out the sale results notifications in the form of a newsletter within 14 days of the sale. This Patent For A Toyota Assisted Manual Transmission Is Very Weird. Im pretty sure that none of our readers who drives a car with a manual transmission has ever looked down at their shifter and exclaimed I sure wish this was a hell of a lot more complicated, needlessly Im pretty sure. I cant say the same for some Toyota engineers, who have patented an electronically controlled manual transmission that I have no idea who would want. The patent is from January, and it came to our attention via this post over at Motor. I took a look at the patent itself, and its pretty confusing. Fiat Steam Shower Manual' title='Fiat Steam Shower Manual' />Tabtight professional, free when you need it, VPN service. A lot of that confusion comes from the strange, other universe logic of patent language. For example, look at this flow chart of how the transmission works, and note how they choose to indicate if the clutch pedal is pressed or not IS CLUTCH PEDAL UNOPERATED So, if yes, then that means, no, the clutch is not operated. Or maybe, yes, the clutch is un operated. Or both. And, if no, that means, yes, it is not not operated. Which means it is operated. Ow. I think I pulled a think gland. Anyway, according to the abstract, this is what this transmission does An electronic control unit permits a shift operation to a neutral position, by which a manual transmission 1. Accordingly, shifting to the neutral position can be performed only by the shift operation. Thus, power transmission can be blocked after termination of the coasting control. In addition, the electronic control unit prohibits the shift operation to a particular gear after the transmission is switched to neutral. Thus, overreving or underreving at the termination of the coasting control can be suppressed. Okay, so from what I can tell, the transmission has a little computer thats watching all kinds of things, specifically vehicle speed and engine speed, and when it detects the clutch engaged you know, not not operated and the shifter in the neutral position, it leaps into action. It looks like one of the big goals of this transmission is to prevent overrevving and underrevving the engine when shifting say, if youre going 7. To keep these embarrassing and potentially engine harming things from happening, a series of shift lock pins are deployed to make it impossible to stick the car in the wrong gear for the given engine RPMs. Im guessing all this compu math happens in the brief interval when the clutch is down and the shifter passes through the N positionwhat the document refers to as coasting control. I guess I can see some usefulness here, as trying to start in 3rd is never fun, and I guess keeping an engine from overrevving in too low a gear is good, but these hardly seem like the sorts of things that would require all this additional hardware and complexity. Wont a normal rev limiter be enough to protect the engine And, when you try and drive in too high a gear, you feel it lugging pretty quickly. Plus, wouldnt this sort of kill deliberate downshifting and engine braking The shift prohibition settings are described, confusingly, here 0. The shift prohibition position setting section 1. V. FIG. 7 is a graph of a relationship between the vehicle speed V and the engine speed Ne at each of the gear shift stages. As shown in FIG. 7, when each of the gear shift stages is defined, the engine speed Ne is increased as the vehicle speed V is increased. Ligament D Arantius. In addition, as the gear shift stage is lowered, the engine speed Ne is increased at the same vehicle speed V. An RED speed Nered in FIG. Alternatively, the RED speed Nered may be set at a speed at which the driver receives a sense of discomfort. An idle speed Neidle is a lower limit speed of the engine 1. The idle speed Neidle is set at such a speed that an engine stalls when the engine speed Ne falls below this lower limit speed or a speed at which an oil pump cannot feed a sufficient amount of oil. Alternatively, the idle speed Neidle may be set at a speed at which the driver receives the sense of discomfort. Thus, the gear shift stage, at which the post gear shifting engine speed Ne falls within a speed range between the idle speed Neidle and the RED speed Nered becomes a permitted speed, becomes the permitted gear shift stage. Meanwhile, the gear shift stage, at which the post gear shifting engine speed Ne falls out of the above speed range, corresponds to the shift prohibition gear shift stage. I think this line is important Alternatively, the RED speed Nered may be set at a speed at which the driver receives a sense of discomfort. But mostly because Im not clear on if this is being referenced as a good or bad thing. So, it looks like this is basically a manual transmission with a bunch of extra hardware to keep drivers from making a couple of simple mistakes that pretty much anyone who has driven stick for any amount of time knows pretty much how to deal with. Whats the point of this, exactly A sort of more forgiving manual transmission, I guess I mean, Im not totally opposed to that if it helps manual transmissions stay viable, but its hard not to feel like this misses the point of manual transmissions entirely.
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