Car manufacturers lobbying, for the engine

[denis]

The vehicle is driven by motors placed directly in the wheels which recover energy during decelerations and dispense with the braking system (hey yes).

Are you talking about electro-magnetic braking like "telma" (retarders mounted on buses and trucks)?

No, I'm talking about wheel motors which can be used as a passive brake (energy recovery) but also as an active brake and with sufficient power to do without conventional brakes. Parking can be managed by electromechanical clutching ...

The engine thus combines engine functions, forward / reverse transmission, regenerative retarder, active braking, steering assistance, abs, esp ...

Finally I do not agree with the vision of Bougonnator (excuse me) of Cléanova. This vehicle can, if we give ourselves the means, to Paris Bordeaux by motorway with its range extender and at 130km / h. Only it will run in electric for 150km then in series hybrid for the rest of the journey. The electrical balance will be better than the hybrid balance which will be better than the balance sheet of a Prius because we will not have all the losses of a mechanical transmission or of the operation of an "automobile" engine, that is to say operating at speeds and transient loads. From this point of view a generator has a better efficiency. this is also the reason why rotary engines (wankel, quasiturbine) surely have a card to play for the future.

There are already passenger cars that work like the Cléanova. I am thinking of pick ups transformed into electrical and which have an on-board generator. As luck would have it in Canada, the country where the Cléanova traction chain comes from.

ok agree with all that, except: for the end of braking and braking when stopped ,; it is possible, but in terms of energy, it will be a disaster; it is better to have mechanical brakes in parallel, in any case they will be required for emergency braking I think there is no need to make equations to demonstrate this et equations is not my thing others do it.

[Bougonnator]

Hi Citro.

It is good that we do not agree because thus we exchange. I may have tapped a little hard to react.
I do not know Cleanova well and as I have a heavy foot in a car or my right wrist contracted by motorcycle I never reproduce the figures announced. Mea culpa for the Cleanova but I only ask to see to change my mind.

However, I had the opportunity to drive an electric AX. What a catastrophe ! At the time it was whispered that it released more lead via the evaportion of batteries than an uncatalysed car. Whatever there is not the subject. So I drove in fast urban conditions: a round trip from La Défense to Boulogne Billancourt. I made the outward journey in the traffic and the return by obstructing the traffic by hoping to arrive before the battery is flat. I left with almost full. On paper, it's true that the autonomy was over 100km. But the first day only. When the batteries were new, then never again.
For the Wankel, now its reliability problems seem resolved. But it remains gluttonous. Very compact but gluttonous. The RX8 which releases 192 or 231 hp depending on the version greedier than the Porsche Caiman and BMW 330 rivals of equivalent power. The wankel also does not allow to dispense with a reduction and differential, and especially a gearbox since its specific torque is rather low. On the other hand, its compactness makes it easier to slide it under the hood of a hybrid.
Another way, less noisy which moreover, could be a Stirling assembled in generator.
Alas, 2006 is the year of the publication of the deficit records of car manufacturers (excluding Japanese) and I do not imagine them taking industrial risks or making R&D investments when the finances are bad. We're going to have to deal with the old-fashioned solutions they offer us and be content with silly gadgets like 3D GPS, or new, more user-friendly cup holders.
Me too it annoys me!

[Bougonnator]

The Cleanova is still far from making Paris-Bordeau in one go.
For the moment, the 16 rolling copies are making short trips for La Poste and EDF.
These are typical urban journeys, like from the post office to the Café des Sports, or from the transformer to the Commerce road stop.
The van is not sold to the general public, yet!
I do not call it a mass market vehicle with wide circulation. It is a concept in the process of experimentation, testing what.
It is individually approved. And if he only had this vehicle, Heuliez would not even be considered a manufacturer since production is below 50 annual copies. But you have to start with something.
On the other hand, the installed power is interesting because realistic. And it is true that no longer shifting and no longer having the noise of the heat engine are real comfort. You have to roll the electric once to really understand it.
There remains the purchase and maintenance price of the battery-powered livestock trailer ....

[zac]

And it is true that no longer shifting and no longer having the noise of the heat engine are real comfort. You have to roll the electric once to really understand it.

Hello

it's like riding a rolls or bentley, great for the ears and super stressful in town; pedestrians can't hear you and systematically try to throw themselves under your wheels.

@+

[Woodcutter]

Mazda persists and signs.

Appeared in "Auto-bild": the MX8 will be marketed and powered by a Wankel engine ..........

I have to find the photo.

Mazda has been selling sports coupes with a "Wankel" rotary engine for a very long time (RX7, then RX8 models, with their various variations).