Discussion in 'Biodiesel general' started by Noelege, Feb 14, 2013.
What made them change to common rail?
Short answer: emission controls.
Hello I understand the PD design was a play to circumvent paying Mercedes a royalty per unit for their common rail patent, then VAG gave up once California Diesel Emission laws went into effect in 2007. That true?
<great resource this board>
1999 Golf TDI
1987 Porsche 951
I was speaking with Landon (founder Appalacian Diesel Works) he was telling me about how he injection events occur. The ALH is the last fuel system using single event injection per cylinder per stroke. The pumpe duce has 10+ and common rail has near 100. Which is why they do not sound like a diesel anymore. Emissions as well as efficiencies and sound control all played a part in this change.
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