Jump to content
News Ticker
Benvenuto su Autopareri!

Recommended Posts

Cita

 

Continental has been developing cost-effective 48-volt electrification, which can be used with both gasoline and diesel engines for number of years. In the run-up to IAA 2019, Continental Powertrain is now presenting a 48-volt high-power drive system with 30 kW, enabling a full-hybrid vehicle.

Conventional full-hybrid vehicle would normally use high voltage technology. The Continental 48-volt hybrid system that offers features similar to those of a high-voltage electric drive.

The new 48-volt high-power system, comprising an electric motor with integrated power electronics and a battery, reduces fuel consumption and thereby also CO2emissions by around 20% compared with similar vehicles fitted with combustion engines. At the same time, the new 48-volt technology is also considerably cheaper than the high-voltage systems used up to now.

Our development objective was to achieve a level of driving efficiency with 48-volt technology that was previously reserved for high-voltage systems and we have now done exactly that.

—Stephan Rebhan, head of Technology & Innovation at Powertrain

 

The 48-volt systems were previously known as mild or P0 hybrids. They involve relatively unobtrusive electrification of the powertrain. Fuel consumption is reduced mainly with the support of the combustion engine (boosting) during acceleration and the recovery of excess kinetic energy (recuperation) when the vehicle decelerates. However, purely electric driving is not possible with such systems, which Continental already manufactures for a number of automotive manufacturers.

In the latest stage of development, the 48-volt system was repositioned in the powertrain. The electric motor was no longer placed in front of the combustion engine on the crankshaft, but behind it—between the combustion engine and transmission (P2 hybrid). This meant that fuel savings were able to increase and, in certain situations, such as driving through a 30 km/h speed limit zone, the vehicle could be driven using the electric motor alone.

With the new 48-volt high-power technology, this hybrid system enables the same functionality as previous, full-hybrid vehicles. The key component here is a new, water-cooled electric motor, the peak output of which was doubled to 30 kW in comparison with that used previously. Electric-only driving is therefore possible up to a speed range of 80 to 90 km/h.

Pp-continental-48-volt-high-power-product-1-data

8-volt high-power electric motor with a peak output of 30 kW.


The developers were able to achieve a 100% increase in power while maintaining the diameter of the motor. Overall, 48-volt high-power technology requires only slightly more installation space than the previous system. The difference in weight is also minimal.

However, the electric motor is not the only new component of the 48-volt high-power technology. The integrated power electronics also uses a new technology that now enables it to handle significantly higher currents. The innovations of the new 48-volt high-power technology result in a level of electrical efficiency that surpasses the previous system by almost 10%.

During recuperation, the new technology is much more effective than was previously the case because the losses incurred in the electric drive system has been halved.

A 48-volt system requires considerably less effort in terms of insulation protection, electrical components are smaller and cheaper, and even the design can be made significantly more compact, because smaller gaps are required between the individual components than is the case with high-voltage technology.

Continental is showcasing the new 48-volt high-power technology, which is also ready for series development, in a Ford Focus test vehicle.

With an eye on the new approval regulations that have been in force since 1 Septembe 2018, in accordance with the WLTP cycle, the 48-volt high-power technology could be developed even further. If, for example, the system was supplemented by on-board charging technology and a larger battery, this would make even a plug-in hybrid drive featuring 48-volt technology possible. This is because the ability to drive in all-electric mode is no longer the main criterion for benefiting from the support for plug-in vehicles. Instead, it is the conversion of electrically stored energy into traction in general.

The deciding factor for different funding initiatives is whether CO2 emissions can be reduced to below 50 g per kilometer.

 

 

Via GreenCarCongress

  • Thanks! 2
Link to comment
Share on other sites

  • J-Gian changed the title to Continental: nuovo Mild-Hybrid a 48 V e 30 kW

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Similar Content

    • By Touareg 2.5
      Fuori Produzione; per il Nuovo Modello cliccate sul seguente link:
      Toyota Auris Facelift 2015







      Auris Hybrid







      es.autoblog - carscoop









      Press Release :
      (1)
      Toyota
      (2)

      Toyota


      Davvero na zozzeria unica sta Auris; risulta essere imbarazzante a 360° e non è cosa da poco .
    • By Cole_90
      Il 2022 porta nuovi fari anteriori a LED, migliorie ai materiali interni e l’allestimento Adventure!
       
       




       
      Press Release:
       
      Toyota Europe
    • By J-Gian
      Un tempo, il metodo di calcolo dei consumi nel ciclo NEDC per un auto ibrida plug-in, era frutto di una formula matematica che teneva conto del presunto utilizzo medio, quindi una buona parte in modalità elettrica ed una piccola parte in modo ibrido. 
       
      La formula era questa: C = (De·C1 + Dav·C2)/(De + Dav)
       
      Dove:
      C = consumo di carburante in l/100 km  
      De = autonomia rilevata in modalità elettrica
      C1 = consumo carburante rilevato con la batteria carica (perché in certe condizioni del ciclo prova potrebbe accendersi il termico)
      C2 = consumo carburante rilevato con la batteria scarica (modalità ibrida)
      Dav = 25 km, presunto utilizzo medio in modalità ibrida, su percorrenze di 100 km
       
       
      Ad esempio, una Prius ibrida plug-in del 2009, il calcolo era questo 2,1 = (25 x 0,5 + 25 x 3,7) / (25+25)
      2,1 l/100 km, corrispondono a 49 g/km di CO2: questo bastava per stare sotto i 50 g/km ed ottenere certe agevolazione in alcuni paesi. Ecco che a quel punto non aveva nemmeno senso eccedere nella taglia della batteria, sarebbero stati solamente costi e peso che poteva incidere su C2.
       
      La fonte di quanto sopra è questa: km77.com - Va de consumos, perdón, emisiones
       
       
       
       
      Con il ciclo WLTP non ho ancora trovato informazioni dettagliate riguardo al nuovo metodo di calcolo. 
      Il ciclo WLTP per una ibrida plug-in comunque prevede questo (fonte: How are plug-in hybrids and electric cars measured? )
       
      inizio ciclo di omologazione WLTP a batteria completamente carica; si tratta delle medesime prove sui rulli che fanno le auto a motore termico (anche le elettriche) con il nuovo iter;
        ripetere il ciclo fino alla scarica completa della batteria di trazione, misurando costantemente le emissioni di CO2 (quindi, complementarmente, i consumi di carburante); 
        notare che durante i test, il motore termico potrebbe accendersi autonomamente per svariate esigenze (es. velocità elevata); l'apporto del termico diverrà via via predominante man mano che ci si avvicinerà alla scarica totale; il tutto viene misurato e contribuisce al calcolo finale delle emissioni di CO2;
        a batteria di trazione totalmente scarica, si effettua un ulteriore ciclo WLTP in modalità totalmente ibrida (termico e frenate rigenerative);
        a questo punto il test si dichiara concluso; si calcolano matematicamente le emissioni di CO2 facendo una media sul rapporto tra autonomia elettrica e totale. 
        La difficoltà nel restituire un dato realistico con questa tipologia di auto, sta nel valutare quale sia poi l'effettivo uso medio dell'utente, ovvero quanto la utilizzerà effettivamente come elettrica, quanto come ibrida. 
       
       
       
      Sicuramente quindi, i nuovi cicli di omologazione hanno messo un po' a soqquadro i piani delle case che puntavano sulle ibride plug-in come artifizio per farla franca. Tuttavia, una volta trovati i nuovi parametri per far rientrare il conteggio entro la soglia desiderata, le case hanno rapidamente adeguato accumulatori e/o sono ricorse a termici più efficienti, per raggiungere nuovamente un risultato che potrebbe non essere lo specchio reale dei consumi ed emissioni.
       
       
       
×
×
  • Create New...

Important Information

Il sito utilizza i cookie per fornirti un'esperienza di navigazione più funzionale, per fini statistici e per la pubblicazione di banner pubblicitari in linea con le tue preferenze. Nascondendo questo avviso, scorrendo questa pagina, cliccando su un link, o proseguendo la navigazione in altra maniera, acconsenti all'uso dei cookie. Terms of Use.