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General Automotive General automotive discussion. This is intended to be a discussion about other not VW and Diesel cars you may have or interested in.

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Old November 28th, 2013, 18:06   #1
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Default Bosch compact: Pressure in diesel engines

Bosch compact: Pressure in diesel engines

”Over the next decade, the vast majority of diesel engines will manage with injection pressures of around 2,000 bar. Although 3,000 bar is not unrealistic, it will be limited to racing cars and high-performance diesel engines.”

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

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Old November 28th, 2013, 19:49   #2
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All well and good but I wonder if they'll be trying that using a CP4.1 pump ...

Seems like a number of later model engines have backtracked from the piezo injectors and backed off the pressure a little to avoid grenading that thing - or even chose a last-generation pump design (Cruze).
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formerly ... 2006 Jetta TDI 5-sp, Spice Red, Unitronics stage 1, 0.681 5th gear.
and before that ... 1996 Passat TDI, Silk Blue
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Old November 29th, 2013, 02:45   #3
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I wonder what engines they plan on using this in? Great if this works as designed but with sub standard lubrication all bets are off!
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Old November 29th, 2013, 09:25   #4
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I wonder how close they can get to meeting PM specs without using a DPF. That was mentioned as a possibility in the text.
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Old November 29th, 2013, 13:30   #5
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I suspect that GM knows something we don't.

The CP1H may be the key to avoiding the present crisis.
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Old November 29th, 2013, 18:54   #6
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Went to the Audi Canada official unveiling of the 2015 A3 sedan last night. New HPFP being used which is to be more efficient, and adds a little more horsepower and torque. Good news. Could not get which model pump as my answer came from one of the corporate reps who was on hand. Also at this time urea will not be used but that may change. It depends on how the testing goes for Canadian emissions. The TDI will arrive late August 2014 with the gasser versions being released April-May 2014. Very attractive car. Audi expects to sell a lot up here.
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