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NeilBlanchard · 02-04-2013, 10:31 AM

If the accumulator has no pressure, how long does the ICE have to run to fully pressurize it (while the car is sitting still)? If it is just minutes, then the ICE cannot warm up properly.

Can the ICE be sized to meet just the average load? In other words, the accumulator has to be large enough to meet the largest demand - say climbing a steep grade for longer than the ICE takes to pressurize it.

It doesn't look like the PSA Peugeot Citroën and Bosch system uses in-wheel hydraulic motors.

With in-wheel motors, there cannot be any gear changes, right? So, the faster you go, the faster the pressure is used, since the volume of hydraulic fluid used vs speed is constant?

02-04-2013, 10:31 AM	#68 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,907 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,950 Times in 1,844 Posts	If the accumulator has no pressure, how long does the ICE have to run to fully pressurize it (while the car is sitting still)? If it is just minutes, then the ICE cannot warm up properly. Can the ICE be sized to meet just the average load? In other words, the accumulator has to be large enough to meet the largest demand - say climbing a steep grade for longer than the ICE takes to pressurize it. It doesn't look like the PSA Peugeot Citroën and Bosch system uses in-wheel hydraulic motors. With in-wheel motors, there cannot be any gear changes, right? So, the faster you go, the faster the pressure is used, since the volume of hydraulic fluid used vs speed is constant? __________________ Sincerely, Neil http://neilblanchard.blogspot.com/ Last edited by NeilBlanchard; 02-04-2013 at 10:36 AM..