Costing Vs Getting To Highest Gear

[Hoonigan]

And I thought people bought autos NOT to think about gear changing and apparently there are people giving themselves brain tumors thinking of them FFS.

Anyways Mr. Dilan, easiest answer is to go easy on the long pedal if you're concerned about economy. That's a no brainer regardless of the transmission. Even more so in an automatic cos it will hang on the high revs until it figures out it's time to shift up. If you smoothly accelerate and drive normally, the car will pick the best gears for you at the best times.

[Crosswind]

  On 1/10/2014 at 5:27 PM, Hoonigan said:

And I thought people bought autos NOT to think about gear changing and apparently there are people giving themselves brain tumors thinking of them FFS.

ur wrong buddy. People in this country buy autos cos they can't balance the clutch

[Komisiripala]

Mods thanks for correcting the title typo. It was bothering me! But I think op was actually bothered about the costing and not coasting lol

[Hoonigan]

  On 1/12/2014 at 11:28 AM, Crosswind said:

ur wrong buddy. People in this country buy autos cos they can't balance the clutch

LOL more than likely

[VVTi]

  On 1/12/2014 at 12:02 PM, Komisiripala said:

Mods thanks for correcting the title typo. It was bothering me! But I think op was actually bothered about the costing and not coasting lol

I thought it was a cost related question too.

[Grid]

  On 1/8/2014 at 2:59 PM, VVTi said:

I find getting out of the car and pushing the damn thing to be very economical too... besides after a few weeks of such pushing I find my abs are killer and my biceps make women wet their panties...

LOL

[The Don]

  On 1/9/2014 at 7:17 AM, dilan_randika said:

Friends,

i'm somewhat new to this automatic transmission functionality & things that's why i wish to ask u experience people a such question.

transmission = auto

in my question, i assumed a condition like in a by road or a lane that we r not making any traffic jam & road is not in a proper condition that best suitable gears are 1,2 & if you do hard acceleration u can get into 3rd.

Question is instead of doing rapid acceleration to get into 3rd)or any higher) for a short time, if we let car to do all job in 1st & 2nd in cruising manner(not hurry to reach destination) keeping RPM <= 2000 & using the maximum momentum & let the cars weight itself roll it.....

1. So such driver would save more fuel than the one who aggressive(may go in higher gears, would finish journey quickly, more acceleration may be higher RPMs like 3000)?

2. An automatic transmission car would select the best suitable gear vehicle should be based on vagarious factors like load etc. why does still an auto car does bit less on km/l than it's same type manual?

Jokes aside, if you want to maintain fuel economy, keeps the revs down and gradually accelorate. Rapid acceloration causes extra fuel burn, and so does being in the wrong gear! (does not matter in an automatic). And once you get to your optimum speed for the road simply maintain it.

All automatics are not as efficient as manual transmissions and delays changing gear and efficiency transferring power makes most conventional hydraulic based auto transmissions less economical than equivalent manual transmission. But this is not quite the case for dual clutch based auto systems which have the potential to be more efficient than manuals.

[Komisiripala]

Hey why is it back to costing??

[Charith H Jayasinghe]

  On 1/15/2014 at 3:10 PM, The Don said:

Jokes aside, if you want to maintain fuel economy, keeps the revs down and gradually accelorate. Rapid acceloration causes extra fuel burn, and so does being in the wrong gear! (does not matter in an automatic). And once you get to your optimum speed for the road simply maintain it.

All automatics are not as efficient as manual transmissions and delays changing gear and efficiency transferring power makes most conventional hydraulic based auto transmissions less economical than equivalent manual transmission. But this is not quite the case for dual clutch based auto systems which have the potential to be more efficient than manuals.

What is this? Also adding that, at cruising speed torque converter gets locked (like above 60km/h) so that energy waste will be low after this unless you do a hard acceleration.

[Rumesh88]

  On 1/16/2014 at 1:41 AM, Charith H Jayasinghe said:

What is this? Also adding that, at cruising speed torque converter gets locked (like above 60km/h) so that energy waste will be low after this unless you do a hard acceleration.

Think of dual clutch as a manual gearbox but with two clutches both operated by a electronically controlled hydraulic system and one clutch serving odd numbered gears and other serving even ones. This is supposed to give you a feeling closer to a manual box but not as "fuel efficient" (assuming that is what the salient point of thread is) as a CVT. BTW thread topic should have been something like " Cost of Coasting Vs ...... ?