Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Got 2.25 L/100 km 104.36 mpg (US) at 80 km/h avg speed

ausias · 06-06-2012, 08:26 AM

Congratulations.

But if you are doing P&G between 80 to 95 kph, your average speed is somewhere near 87.5 kph (it tends to maximum speed becuase average increases when higher acceleration you have and lower the deceleration will be). MAths say average of numbers higher than 80 are higher than 80.

YOur fuel consumption is better than you say because average speed needs to be higher than you say or you are wrong in your numbers.

My car/s fuel consumption at 80 kmh now is 3.89L/100km (using cruise control) 1.9 TDI BXE 105 cv @ 138 cv. http://en.wikipedia.org/wiki/Seat_leon
It seems very difficult to me my car going under 3.5 L/100 km at 80 kmh (sport tires, standard underbody, standard gearing will be changed in near future but i'm not going under 3.5 at that speed). Maybe using push and glide but i only glide downhill.

My goal with my car is 5.5 L/100km at 120 kmh cruise control (standard it was 6.76 L/100km). Current fuel consumption is: 122 km/h cruise control 6.06L/100km (22km highway loop) and 5.9 L/100km (240 km higway loop). I will change tires, underbody and gearing in the future. I was focused on cheap aeromods (wheelcaps, grille, spoiler) and ecu flash because i wanted more power to overtake. 2008 Seat Leon Ecomotive Gearbox it's hard to find (but I have to because my topspeed will increase 15 kmh or 10 mph! and fuel economy improve).

I did some P&G with my year 2000 (310.000 km odometer) 1.9 tdi 110CV AHF and I got 4.5 L/100km at 110 km/h (100 to 120 kph interval) saving 0.5 L/100km, tdi's 5 th gear minimum efficiency it's high enough to show little improvement. The same car with Cd aeromoded from 0.31 to 0.28 gave me a fuel consumption of 3.08 L/100km (82 kmh average, using foot control speed). http://en.wikipedia.org/wiki/%C5%A0koda_Octavia

I use P&G with my car while city driving becase of awful effficiency of 1st to 3th gears at cruise speed compared with engine's maximum. I'm getting with the Skoda Octavia 1.9 TDI 110 cv AHF in the city 6.0 L/100km if I drive it with P&G, and long gears etc. Taxi drivers have fuel consumptioms of 7.6 L/100km with same car.

Diesel Trains doesn't need P&G and they get maximum efficiency at steady speed with correct gearing.
Does not using P&G on a 300 km trip sound crazy to you?

06-06-2012, 08:26 AM	#18 (permalink)
ausias Burning oil to move air. Join Date: Aug 2011 Location: Valencia (Europe) Posts: 126 ausiasmobil - '06 Seat Leon 1.9 TDI Reference 90 day: 40.22 mpg (US) EcoTxec - '99 Skoda Octavia 1.9 TDI 110 cv Laurin & Klement 90 day: 52.85 mpg (US) Thanks: 92 Thanked 37 Times in 25 Posts	Congratulations. But if you are doing P&G between 80 to 95 kph, your average speed is somewhere near 87.5 kph (it tends to maximum speed becuase average increases when higher acceleration you have and lower the deceleration will be). MAths say average of numbers higher than 80 are higher than 80. YOur fuel consumption is better than you say because average speed needs to be higher than you say or you are wrong in your numbers. My car/s fuel consumption at 80 kmh now is 3.89L/100km (using cruise control) 1.9 TDI BXE 105 cv @ 138 cv. http://en.wikipedia.org/wiki/Seat_leon It seems very difficult to me my car going under 3.5 L/100 km at 80 kmh (sport tires, standard underbody, standard gearing will be changed in near future but i'm not going under 3.5 at that speed). Maybe using push and glide but i only glide downhill. My goal with my car is 5.5 L/100km at 120 kmh cruise control (standard it was 6.76 L/100km). Current fuel consumption is: 122 km/h cruise control 6.06L/100km (22km highway loop) and 5.9 L/100km (240 km higway loop). I will change tires, underbody and gearing in the future. I was focused on cheap aeromods (wheelcaps, grille, spoiler) and ecu flash because i wanted more power to overtake. 2008 Seat Leon Ecomotive Gearbox it's hard to find (but I have to because my topspeed will increase 15 kmh or 10 mph! and fuel economy improve). I did some P&G with my year 2000 (310.000 km odometer) 1.9 tdi 110CV AHF and I got 4.5 L/100km at 110 km/h (100 to 120 kph interval) saving 0.5 L/100km, tdi's 5 th gear minimum efficiency it's high enough to show little improvement. The same car with Cd aeromoded from 0.31 to 0.28 gave me a fuel consumption of 3.08 L/100km (82 kmh average, using foot control speed). http://en.wikipedia.org/wiki/%C5%A0koda_Octavia I use P&G with my car while city driving becase of awful effficiency of 1st to 3th gears at cruise speed compared with engine's maximum. I'm getting with the Skoda Octavia 1.9 TDI 110 cv AHF in the city 6.0 L/100km if I drive it with P&G, and long gears etc. Taxi drivers have fuel consumptioms of 7.6 L/100km with same car. Diesel Trains doesn't need P&G and they get maximum efficiency at steady speed with correct gearing. Does not using P&G on a 300 km trip sound crazy to you? __________________ Sold: Last edited by ausias; 06-06-2012 at 08:47 AM..