My sister's virtually new Toyota Corolla hybrid certainly doesn't have an EV mode. It has an "eco mode", and it does stay on battery power up to ~15mph which would let you creep out of a garage.Sorry JASmith. That explanation doesn't wash at all. In the first place, all the modern Toyota hybrids have a selectable EV only mode.
You don't have a PHEV though, do you? These aren't available to anyone yet as far as I know. The Crosstrek PHEV doesn't have an EV mode, and like the Corolla turns on the ICE somewhere around 15mph as well, as it just doesn't have enough power and pretty sure it just has a dummy light that lets you know when its operating in EV mode but it rightfully decides on its own when all the conditions are met that it can do so. The plugin Tucson probably won't have a EV forced mode, but would be able to operate under a wider envelope in EV only mode using its own onboard logic especially if you stay in its similar eco mode.In the 2nd place, All PHEVs that I know of have a selectable EV only mode.
Poor reliability though according to Consumer Reports, and its basically a small Chevy Cruze. It was much more expensive than a Cruze, yet still looked like one, and the market was shifting to crossovers at the time. If they had figured out how to reduce the cost, increased reputation for reliability, and had made it a slightly larger crossover like the Chevy Trailblazer, I bet it would have sold much better. The pure EV Bolt seems to be selling well for them though.Drove a Chevy Volt a couple of years ago. 50 miles range electric only before the ICE was needed. Great car....nobody bought them.....gone.
I understand and agree with your opinion of the Chevy Volt. The one I drove was small inside [battery took some room], and it did not have the feel of high quality.Poor reliability though according to Consumer Reports, and its basically a small Chevy Cruze. It was much more expensive than a Cruze, yet still looked like one, and the market was shifting to crossovers at the time. If they had figured out how to reduce the cost, increased reputation for reliability, and had made it a slightly larger crossover like the Chevy Trailblazer, I bet it would have sold much better. The pure EV Bolt seems to be selling well for them though.
The Toyota HEV (not PHEV) models with selectable EV mode are the Sienna hybrid, the Highlander hybrid, the RAV4 hybrid, Auris hybrid, and Prius hybrid. There may be other models as well. The Accord hybrid has a selectable EV mode as does the CR-V hybrid and Insight hybrid. There may be other models. The point is that these hybrid makers include that function because there are many times, when traveling short distances, that customers need to inhibit the engine from starting. I think that hyundai wants to take control over the engine starting completely away from the customer because they are overly paranoid about customers discharging the traction battery too far and bricking the battery. If so, that's a shame because it's a useful function and a critically useful function if you shuffle vehicles around in your garage often. My Tucson starts every time when backing out of the garage. I place it in park in the driveway and boom, the engine starts without fail.It looks like the Toyota models OP is mentioning is the Prime models which are more comparable to the upcoming Tucson Plug-in Hybrid. The regular Hybrid models for both Toyota and Hyundai have tiny 1.x kWh batteries that will not do much at all on its own. I can move my Tucson up a spot on my driveway and the ICE does not kick in, but that's about it. The Toyota Rav4 Prime has an 18kWh battery and the Tucson Plug-in will have a 13kWh battery and definitely seems like it might have an EV only mode.
HP doesn't measure power. There are 1000's of 80,000 lb truck and trailers flying down our highways running @ 200lbs per HP and while they may be dangerous it's not because of lack of power.Do you know how slow a 4K pound Tucson would be in EV only mode? That's only 90hp.
The slowest vehicle I've ever driven, which I considered to be downright dangerous in some situations due to lack of ability to quickly get up to speed was a Chevy S10. It was just over 3000lbs and 120hp,
Its literally a measurement of power, lol!HP doesn't measure power.
I would be very surprised, as it goes against everything I learned in school as an Engineer. Horsepower is a measure of how quickly work can be done, whereas torque is merely measuring twisting strength. With the right gearing I can exert thousands of ftlbs with a mere hand-crank or even move a 18 wheeler down a driveway, but that work is going to be done over a very long period of time since I'm not going to be able to output even a horsepower. In short, horsepower wins races, not torque.Your S10 was probably pokey but it only had 140ft-lbs of torque max, where the PHEV electric motor to develop 90 HP @ 2100 RPM needs to be developing around 225ft-lbs of torque, and match that with a paddle controlled 6 speed I think you will be surprised how quickly it will get out of the way.
Using your description there are 3 metric's time, distance and force. Horsepower is a measurement of work. Lets describe a theoretical turbine that produces flat line torque of 10 lb-ft the torque/force, @ 52.5 rpm = .1 HP, 525 rpm = 1 HP, 5252 rpm = 10 HP, 52520 rpm = 100 HP, and finally, 525200 rpm = 1000 hp all with the same 10 lb-ft of force/power/torque. Distance and time aren't the power component of horsepower.Its literally a measurement of power, lol!
"horsepower hôrs′pou″ər N. A unit of power in the US Customary System, equal to 745.7 watts or 33,000 foot-pounds per minute."
Those loaded 18 wheelers running Cummins 12 or 15-liter engines are producing around 400+/- HP but 2000+ lb-ft of torque. How about this, bolt 2 Mazda RX8 engines (each making 260 hp @ 8500 rpm even if we combine their torque to 320 lb-ft) put them in a loaded 18 wheeler, and see how they fare going over the Grapevine LOL. In your hand-crank example, while it will take a very long time if you had more torque/force to provide the time would diminished like getting a car moving using 225 lb-ft of torque.hand-crank or even move a 18 wheeler down a driveway, but that work is going to be done over a very long period of time since I'm not going to be able to output even a horsepower.
I can agree with that, of course, those engines are spinning around 15k so that horsepower comes with only 300lb-ft of torque. But here's the thing - I don't think I'll be racing my new Tucson. This started because you didn't feel the 90HP electric motor was adequate for city driving and I pointed that 90HP came with 225 lb-fh of torque made up for the low HP. the same way the 369 lb-ft of torque makes the 180 HP GMC 4X4 diesel driveable - but stiil not for racing.In short, horsepower wins races, not torque.
Its not my description, its copied and pasted from a dictionary... and no horsepower isn't a measurement of work, its a measurement of the rate at which work is done or work over time. In automotive terms, its describing how quickly you can move a certain weight down the road.Using your description
Those 18 wheelers are extremely slow, so why are you bringing them up as a metric? A loaded 18 wheeler takes several miles and as much as several minutes to get to 60mph, and while your passenger vehicle can stop from that speed in about 115 feet on average a loaded truck will take at least a football field as a rule of thumb or three times that. Semi drivers are set to such rigorous standards because they can't do anything quickly and rely on a lot of planning and signaling accordingly.Those loaded 18 wheelers running Cummins 12 or 15-liter engines are producing around 400+/- HP but 2000+ lb-ft of torque.
I don't know why you are laughing, because it would make absolutely no difference with appropriate gearing, as horsepower is horsepower. The reason they don't use such high revving peaky engines has to do with efficiency and durability. A tiny engine can't sustain 8.5K RPM for very long periods of time, nor is it likely fuel efficient to do so.How about this, bolt 2 Mazda RX8 engines (each making 260 hp @ 8500 rpm even if we combine their torque to 320 lb-ft) put them in a loaded 18 wheeler, and see how they fare going over the Grapevine LOL.
Off the line in first gear, you're going to feel that torque because it takes some speed to rev the engine up to where its making peak horsepower, but once you're rolling your acceleration potential is going to be measured in horsepower, and 90hp motivating near 4000lbs of vehicle is going to be painfully slow such as my example of going up an entrance ramp or passing on the highway.This started because you didn't feel the 90HP electric motor was adequate for city driving and I pointed that 90HP came with 225 lb-fh of torque made up for the low HP. the same way the 369 lb-ft of torque makes the 180 HP GMC 4X4 diesel driveable - but stiil not for racing.
Area under the horsepower curve, not torque curve, but yes a broader curve matters especially right off the line, but 4000lb/90hp is still a very high weight to power ratio no matter how lazily of an RPM you can use that power. Oh well, some will only learn through experience so when you get your plugin hybrid do us a favor and upload a video on how fast you can accelerate from say 40mph to 75mph on an onramp using only the 90hp electric motor. Teslas ARE fast, because Teslas have over 800hp.charlescrown said:What makes a good engine is the area under the torque curve.