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Featured Replies

Inviato
erano del pde normale.

Per il piezo, per ora accontentatevi di questa traduzione automatica e della foto, tratte da www.vwmechatronic.de il sito della JointVenture tra VW e Siemens per la produzione degli iniettori piezo, dove si vede bene che il "concetto" di iniettore pompa è stato rispettato. Scusate, ma devo scappare a studiare.

With the product, which Volkswagen Mechatronic manufactures, it concerns an advancement of the pump nozzle procedure so mentioned for TDI engines, used by Volkswagens. It is characterised by highest possible injection pressures with efficiency improved at the same time and more precisely, flexibly controllable injection. Thus these Diesel engines are particularly high performance and discharge with comparatively low consumption of fewer pollutants. The manufacturing of such high pressure Diesel injection systems presupposes technologies within the tenth micrometer range for the economic manufacturing. Substantial manufacturing characteristics of the project are therefore very high tolerance accuracies by high-technological precision machines. Customer of the injecting elements manufactured by Volkswagen Mechatronic is the Volkswagen company. Their employment is intended for the entire vehicle pallet of the Volkswagen company.

Pumpe_Beschr.gif

Inviato
  • Autore

http://www.kraftfahrzeugtechnik-heute.de/k/resources/literatur/leseproben/u230e.pdf

http://rb-k.bosch.de/en/start/product_ds_33_comrail_injk.html

A me pare che a differenza dell'iniettore del common rail in cui il piezo innesca "direttamente" l'apertura dell'iniettore, nel PDE il piezo opera nella apertura/chiusura della camera ad alta pressione su cui a agisce lo stantuffo.

L'aumento di pressione porta poi all'apertura dell'ago e quindi all'iniezione del gasolio...

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