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So tired of missing the light and waiting for the next cycle cause so many people still believe slow acceleration saves fuel.
Engine efficiency peaks in most applications at around 75% of rated engine power, which is also the range of greatest engine torque (e.g. in most modern passenger automobile engines with a redline of about 6,000 RPM, maximum torque is obtained at about 4,500 RPM, and maximum engine power is obtained at about 6,000 RPM). At all other combinations of engine speed and torque, the thermal efficiency is less than this maximum. https://en.wikipedia.org/wiki/Engine_efficiency
Maybe back in the days of carburetors on automobile you wasted fuel by opening the main jets but we have this new thing called fuel injection. Been around for some time now.
Will the myth that slowly accelerating saves fuel ever die ?
every car responds differently, even EFI cars. remember that fuel flow is calculated by the ECU based on many inputs, and if you are accelerating hard, you are going to use more fuel even with EFI, because the ECU is going to add more fuel to make the necessary power, and to prevent detonation in certain speed and load ranges.
and while EFI cars have tighter control over the a/f ratios, that doesnt mean the ratios are the same across the RPM band. they fluctuate just like carburetted engines did.
Not really. If we're talking about minimizing the number of people missing the next light, then the logical solution is to maximize everyone's acceleration up to it.
Methinks a lot of people spend way too much time behind the wheel, because they're clearly not enjoying it much, if at all.
We weren't talking about "minimizing the number of people...."
You just accomplished the "double strawman" where you make up yet another scenario in order to defend the previously constructed scenario.
Because surely none of us agree with your views that we should be able to drink whatever amounts we want and still operate vehicles without consequence.
every car responds differently, even EFI cars. remember that fuel flow is calculated by the ECU based on many inputs, and if you are accelerating hard, you are going to use more fuel even with EFI, because the ECU is going to add more fuel to make the necessary power, and to prevent detonation in certain speed and load ranges.
and while EFI cars have tighter control over the a/f ratios, that doesnt mean the ratios are the same across the RPM band. they fluctuate just like carburetted engines did.
Definitely. Not to mention you have to factor in some posters views that drunk driving is acceptable.
OP, you’re only partially right. Extremely slow acceleration is still acceleration and the longer you accelerate, the more gas you’re burning. But if you’re acceleration hard then you’re burning more gas than either slow or moderate acceleration. Moderate acceleration to cruising speed is more efficient and safer. You bathtub analogy is wrong because in a vehicle gas goes into the engine and right back out as exhaust. It’s more like using 220 volts to Power a desk lamp. That lamp will light up with low power but it won’t be bright enough. Use the right amount of power to get the job done safely. Use too much power and you reduce the life of the bulb.
We weren't talking about "minimizing the number of people...."
You just accomplished the "double strawman" where you make up yet another scenario in order to defend the previously constructed scenario.
Because surely none of us agree with your views that we should be able to drink whatever amounts we want and still operate vehicles without consequence.
The strawman police is back.
If you want to defend the claim that mashing the gas saves fuel, you’d be better off attempting a technical counterpoint rather than overusing the term “strawman”.
The best mileage is accomplished by getting into the highest gear as quickly as possible without using high throttle openings or extended low gear operation to get the speed needed for high gear use.
It will be different for each car configuration but usually moderate acceleration works best. Neither a heavy foot or extended very light acceleration will win the mileage award.
We weren't talking about "minimizing the number of people...."
You just accomplished the "double strawman" where you make up yet another scenario in order to defend the previously constructed scenario.
Because surely none of us agree with your views that we should be able to drink whatever amounts we want and still operate vehicles without consequence.
What were we talking about then? OP's first sentence stated he was sick of missing the next light because too many people are accelerating slowly. So, we're talking about just one person missing the next light?
LOL, OK. You just accomplished the double doofus: Ignoring issue being discussed and making a personal attack.
But it sure is fun for this old woman slow starter to watch someone rush like he is in the start of a race only to pull up beside him at the next light.
The strawman police is back.
If you want to defend the claim that mashing the gas saves fuel, you’d be better off attempting a technical counterpoint rather than overusing the term “strawman”.
Indeed, but defending a position based on a false premise and a faulty analogy isn't easy.
Is the OP really arguing that rapid acceleration, which obviously raises RPMs, is saving gas? How many more posters need to correct her before she realizes this entire thread was nonsense? The correct answer as posted several times is a moderate acceleration. I like to move down the road too. People who drive slowly or delay at a light drive me crazy. But it's been my experience that the vast majority of people in this country accelerate at the appropriate speed.
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