Electric car: power, autonomy, consumption?

[plasmanu]

Eh ...
What ...?
Nice signature @seminGH HF
HF is High Frequency

[Leo Maximus]

... A Prius that descends the plain of Alsace on the 4 stabilized lanes at 110 will be a car .... thermal ....

No.

With Toyota's HSD, as soon as the speed is different from zero, the MG2 electric motor is still running.

At 110 km / h the MG2 electric motor runs around 8000 rpm (+/- 1000 laps depending on the version), even in Alsace ...

A Prius can not be a 100% thermal car. As soon as you lift your foot, the thermal decelerates and then stops, regardless of the speed, and the MG2 electric motor continues to run.

[bamboo]

... A Prius that descends the plain of Alsace on the 4 stabilized lanes at 110 will be a car .... thermal ....

A Prius can not be a 100% thermal car. As soon as you lift your foot, the thermal decelerates and then stops, regardless of the speed, and the MG2 electric motor continues to run.

To be more precise: the HSD constantly optimizes the efficiency of the car:
- If the descent makes that the engine would not be used at full load, then it takes the opportunity to recharge the battery
- If on the contrary, the thermal needs a little outside help to not exceed the maximum efficiency, then it is the electric motor that helps.

[gildas]

Out of curiosity, 1L of diesel = 10kw

An electric car charge = 20 Kw consumed for 100 km traveled.
(25 Kw price on the plug?)

A diesel car = 40 to 50 kw for 100 km and I do not speak of gray energy for the supply of diesel!

Advantage to the electric car.

[Leo Maximus]

... To be more precise: the HSD constantly optimizes the efficiency of the car:
- If the descent makes that the engine would not be used at full load, then it takes the opportunity to recharge the battery
- If on the contrary, the thermal needs a little outside help to not exceed the maximum efficiency, then it is the electric motor that helps.

Absolutely, bamboo!

In Toyota's HSD, the MG2 electric motor / generator always runs at any speed. It only stops when the car stops. The rotational speed of the MG2 motor / generator is directly proportional to the speed of the vehicle.

The assertion that Toyota's hybrid cars can only run 2 km in electric then, the battery being flat, they are then ordinary thermal cars has always been totally wrong.

The animation here: http://nebconsulting.com/bedewi-Prius.html the watch. It is impossible to ride with the ICE thermal only. The thermal ICE can turn alone but the vehicle will remain stationary as MG1 will turn in the positive direction.

[Leo Maximus]

Illustration with two videos on youtube by Olaf Rohde:

In Lexus CT200h: https://www.youtube.com/watch?v=H1xZHgf9bAM

In Yaris Hybrid: https://www.youtube.com/watch?v=0oYsfOzU45A

In both cases, the driver has a heavy or very heavy foot: sometimes 70 in town and up to 140 in areas limited to 70 ...

In CT200h, the course lasts 30 mn and the thermal is stopped for almost 15 mn, almost half of the time. The MG2 engine / generator never stops spinning while the car is running.

At 90 km / h, "cool":



Position Throttle Manifold on 17% so low acceleration. Almost constant speed.

MG2 engine / generator at 7000 rpm (probably less actually, see RaceRender setup)

Thermal ICE at 1000 revolutions / min.

MG1 engine / generator at -3000 rpm.

----------------------------------------------

In acceleration up to 139 km / h!



The thermal ICE and the 2 motors / generators MG1 and MG2 rotate.

[Leo Maximus]

In Hybrid Yaris, more detailed RaceRender info with Vb volt battery voltage and Ib amps charge / discharge current.

And more cool driving:



At 97 km / h. Thermal ICE at 1800 RPM, MG2 at 7000 RPM. Driving light foot, (Throttle Manifold 12%). The thermal will stop.

Total journey time 12 minutes 05. The thermal will be shut down for 5 minutes 15. Almost half the time.

State of charge of the battery (SOC): 63% at the beginning, 57% at the arrival.

[bamboo]

Out of curiosity, 1L of diesel = 10kw

An electric car charge = 20 Kw consumed for 100 km traveled.
(25 Kw price on the plug?)

A diesel car = 40 to 50 kw for 100 km and I do not speak of gray energy for the supply of diesel!

Advantage to the electric car.

And again, you played down the advantage:

I had left a wattmeter plugged permanently on my car charger: I was at less than 13 kwh / 100km at the socket.

[Remundo]

we can not compare thermal energy with mechanical energy directly.

Thermal energy is a messy energy that can not be converted into mechanical energy with high efficiency

While mechanical (or electrical) energy is an ordered form of energy whose conversion at high efficiency is possible (> 90%).

In reality, the electrical energy consumed by an EV required the same combustion energy at the power plant (thermal ...) than it would have been directly burned by a combustion engine.

And even a little more according to some studies.

Revisit a little thermodynamics lessons, Friends.

[bamboo]

In reality, the electrical energy consumed by an EV required the same combustion energy at the power plant (thermal ...) than it would have been directly burned by a combustion engine.

And even a little more according to some studies.

Who did these studies?
In a power plant, the electrical energy produced always has the same high efficiency (A gas plant has a yield of 50%). Unlike the car engine that has a performance of:
- 0% at a stop sign, red light, or even in front of the baker because the driver does not want to cut his engine while the "co-pilot" goes to get bread ...
- 5% on the first 5 km
- 10% on the following 5
- 10% in city

Revisit a little thermodynamics lessons, Friends. Razz

Revise your co-generation classics: it is easier to usefully recover the heat generated by the cooling towers than with a car radiator ... which constantly wants to evacuate into the atmosphere the 90% d oil energy released in heat ...

(buildings are heated with the "waste" heat from power plants)