Go Back   Team-BHP > BHP India > The Indian Car Scene


Reply
 
Thread Tools Search this Thread
Old 15th June 2007, 23:49   #1
BHPian
 
Join Date: Jul 2005
Location: Mumbai (MH-01)
Posts: 809
Thanked: 71 Times
Exclamation Standard guidelines for calculating FE?

FUEL EFFICIENCY (FE) which is an important factor in a typical Indian car buyer's decision, is often manipulated by manufacturers (especially bike manufacturers) to gain maximum publicity and sales "mileage" (pun intended) by quoting "UNDER STANDARD TEST CONDITIONS"

Like it or not, fuel efficiency is an important requirement when it comes to environment conservation and the country's huge fuel import bills.

I know that in Europe there is something called "European Combined Driving Cycle" which is a standard yardstick to compare FE of different cars.

We have standard acceleration tests like 0-100 kph, 0-400m (quarter mile) and so on, then why not for FE.

It's seen that every magazine and manufacturer uses its own convenient formula to calculate fuel efficiency of their product.

Let's say, standards can be set on the basis of....
1) Minimum Distance to be covered.
2) Minimum Speed of the vehicle.
3) No. of passengers / amount of fuel in car while testing.
4) Climatic/road conditions and so on.

If such standards do exist in India, then why aren't they implemented ?

For some, this might be a hopeless thread but it is a fact that fuel efficiency is a very very important parameter from all points of view.
salilpawar1 is offline   Reply With Quote
Old 16th June 2007, 00:16   #2
Team-BHP Support
 
aah78's Avatar
 
Join Date: Feb 2004
Location: NYC / BOM
Posts: 3,625
Thanked: 1,627 Times
Default

Quote:
Originally Posted by salilpawar1 View Post
"UNDER STANDARD TEST CONDITIONS"
which as we all know are highly exaggerated figures and aren't even close to everyday driving situations.

i remember reading in either Car & Driver or Road & Track, that the EPA which handles the fuel efficiency figures do have some sort of plan to change their testing procedures (or calculations) to bring the fuel efficiency figures closer to practical levels.

Quote:
Originally Posted by salilpawar1
It's seen that every magazine uses its own convenient formula to calculate fuel efficiency of their product.
most magazines usually display an average fuel economy figure from cars in their long-term fleets. they get this figure by taking an average figure of mileage over mixed terrain. this is generally closer to the figure one should expect in everyday driving conditions.

Last edited by aah78 : 16th June 2007 at 00:36. Reason: adding information.
aah78 is online now   Reply With Quote
Old 16th June 2007, 00:58   #3
BANNED
 
hellspawn's Avatar
 
Join Date: Jul 2005
Location: noida
Posts: 1,686
Thanked: 6 Times
Infractions: 0/1 (10)
Default

but then again te "under standard test conditions" is a yardstick to measure the fuel efficiency by.i would suppose its difficult to recreate the same situations,driving conditions,weather,traffic for each car and thus the figures would vary even for the same car if this test is done again.europe has good roads,sensible traffic management,educated drivers so its posible to replicate atleast the same driving conditions.in india,you would find buses,autos,bikes cutting in front of you and thus fe figures would vary say for a car which didnt encounter these conditions compared to a car which did.
if a car under test conditions gives 20kmpl and another car gives 30kmpl under standard test condition,then you know that the second car is more fuel efficient.
hellspawn is offline   Reply With Quote
Old 16th June 2007, 01:02   #4
Team-BHP Support
 
.anshuman's Avatar
 
Join Date: Dec 2004
Location: Good-Gaon
Posts: 7,714
Thanked: 9,021 Times
Default

i agree there should be a set standard so that manufacturers can claim the figures accordingly,agencies like ARAI should give fuel consumption ratings when they test any vehicle prior to its launch this will aid in clearing confusion amongst not so well informed or tooooo smart costumers especially after seeing the fiesta ad claiming 34kmpl

OFFTOPIC:ive met lots of ppl who say fiesta returns 34kmpl some of their distant relative is getting that,the other day i was in verna and i met a guy he asked "kya average hai?" i told him 15kmpl city he said its poor because fiesta gives 34,now should i have argued with that guy,such things occur frequently.
.anshuman is offline   Reply With Quote
Old 19th June 2007, 11:06   #5
BHPian
 
Join Date: Jul 2005
Location: Mumbai (MH-01)
Posts: 809
Thanked: 71 Times
Smile

Quote:
Originally Posted by hellspawn View Post
but then again te "under standard test conditions" is a yardstick to measure the fuel efficiency by.i would suppose its difficult to recreate the same situations,driving conditions,weather,traffic for each car and thus the figures would vary even for the same car if this test is done again.europe has good roads,sensible traffic management,educated drivers so its posible to replicate atleast the same driving conditions.in india,you would find buses,autos,bikes cutting in front of you and thus fe figures would vary say for a car which didnt encounter these conditions compared to a car which did.
if a car under test conditions gives 20kmpl and another car gives 30kmpl under standard test condition,then you know that the second car is more fuel efficient.
Agreed, but won't a some standardisation will give a buyer some parameter to compare FE of different cars.

Seriously, how many motorists drive their cars regulary "pedal to the metal" style... but still acceleration figures like 0-100 kph and topspeed give an idea about the relative performances of two cars.
salilpawar1 is offline   Reply With Quote
Old 19th June 2007, 22:15   #6
Team-BHP Support
 
Rehaan's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 22,381
Thanked: 22,610 Times
Default

Also check out this thread and the 2 links in it >>

http://www.team-bhp.com/forum/indian...-your-car.html (How do you calculate mileage for your car)

cya
R
Rehaan is offline   Reply With Quote
Old 9th February 2008, 11:56   #7
BANNED
 
Join Date: Jun 2007
Location: Bengalooru
Posts: 1,471
Thanked: 7 Times
Default

Check this post http://www.team-bhp.com/forum/716802-post15.html in the thread http://www.team-bhp.com/forum/indian...standards.html (Does India need fuel efficiency standards?)
diabloo is offline   Reply With Quote
Old 9th February 2008, 12:42   #8
BHPian
 
Join Date: Oct 2007
Location: Pune
Posts: 213
Thanked: 0 Times
Default

I think this thread can be merged with Khanak's thread. What say?
given2fly is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Steps in calculating the acceleration timings [0-100 & in-gear]? swiftnfurious Technical Stuff 4 31st October 2011 05:44
Calculating EMIs jat The Indian Car Scene 16 12th September 2009 16:54
Calculating preclose amount? AdvaithC Indian Car Loans & Insurance 4 7th July 2008 00:35
Calculating Sub Wattage vebmetal In-Car Entertainment 6 14th November 2007 12:52
turbo guidelines for speedrun 2005 iceman91 Indian Motorsport 11 27th October 2005 19:16


All times are GMT +5.5. The time now is 14:39.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks