Fuel Consumption Saving Tips

[5936]

So that's what I have been doing and suppose to be doing according to manual, as coasting allows Regen brake to charge batteries.

Cheers to coasting.

[Good-Carbuyer]

can fight wif jazz oredi

 

I believe under ideal condition my previous Accent 1.5M (no modification) ever did 18.8km/l and 28.8km/l over distances of about 100km (even hybrid only 27km/l then)

[Good-Carbuyer]

You assumption is completely the opposite of Hypermiling. That act is called Road Hogging.

 

Hypermiling requres a person to be highly alert of the traffic conditions around. It requres a conscious effort to keep up with the flow and at the same time comply with the laws of traffic.

 

Hypermiling does not disrupt traffic flow but instead if everybody practises hypermiling, 60%... I repeat again...60% of tailgating collisions can be avoided... Tailgating collisions are inconsiderate, and it contributes to disruption of traffic flow.

 

Hypermiling promotes a smoother traffic flow.

 

A computer simulated traffic flow was done (in US) with regards to start stop traffic.

This sort of driving created very bad jams for long periods of time. Usually associated with over-exuberant driving. Driving that involves quick starts, persistant overtaking, and closing-up the gap(tailgating).

 

However, when the computer simulated everyone leaving spaces of a few car lenghts ahead... and everyone following the flow of the general traffic. The speed although a little slower... moved along very very smoothly. There were very few jams.

 

So you decide. Is Safe Hypermiling in Singapore a considerate act or a inconsiderate one.

 

I believe most techniques in hypermiling are fine with the exception of tail-gating practice. One rear end collision can wipe out the petrol/fuel saved over the previous months/years. I also use hill-climb and conering for braking/slowing the car

[Elfenstar]

You assumption is completely the opposite of Hypermiling. That act is called Road Hogging.

 

Hypermiling requres a person to be highly alert of the traffic conditions around. It requres a conscious effort to keep up with the flow and at the same time comply with the laws of traffic.

 

Hypermiling does not disrupt traffic flow but instead if everybody practises hypermiling, 60%... I repeat again...60% of tailgating collisions can be avoided... Tailgating collisions are inconsiderate, and it contributes to disruption of traffic flow.

 

Hypermiling promotes a smoother traffic flow.

 

A computer simulated traffic flow was done (in US) with regards to start stop traffic.

This sort of driving created very bad jams for long periods of time. Usually associated with over-exuberant driving. Driving that involves quick starts, persistant overtaking, and closing-up the gap(tailgating).

 

However, when the computer simulated everyone leaving spaces of a few car lenghts ahead... and everyone following the flow of the general traffic. The speed although a little slower... moved along very very smoothly. There were very few jams.

 

So you decide. Is Safe Hypermiling in Singapore a considerate act or a inconsiderate one.

 

I think you're mixing a lot of things things together and confusing them as a single "entity".

Hypermilling is about maximising fuel economy.

Road hogging and tailgating are both examples of inconsiderate driving.

Keeping up with the flow is part of conscientious driving

And complying with the law is just that.

 

Speed and acceleration wise, theoretically you get the best fuel economy at the lowest load, and lowest engine speed. That is what hypermilling is about. Everything from aerodynamics, to keeping weight down to coasting, and even drafting, all involves keeping the load as low as possible.

 

You can hypermill and be conscientious, but they are independent of each other. Just know that by doing both, it is at the expense of fuel economy.

 

Also, hypermilling in itself does not promote a smoother flow. It may impede traffic flow as long as everyone else drives faster. Similarly, aggressive non-conscientious driving by persistant overtaking, forcefully cutting in, not giving way etc disrupts the flow by causing others to slow down unnecessarily. Your US study example wasn't hypermilling, rather it was conscientious driving, which is exactly what allows for a smoother traffic flow.

 

Btw, being highly aware of whats going on around is a responsibility of every driver regardless of driving style, and no, it is not a trait that is uniquely associated with hypermilling.

 

P.S. In reference to being efficient from 90 to 100kmh. To nitpick a lil In constant cruising, between 70 to 90kmh is most efficient for most vehicles when you compare time taken vs consumption, however for hypermilling the target is lowest FC (i.e. distance vs consumption) which is roughly between 50 to 70kmh. The exact speed would be dependant on each vehicle.

Edited August 11, 2010 by Elfenstar

[Hypermiler]

 

Which was exactly what i was pointing out in your post. Don't mix road-hogging, inconsiderate, and unsafe driving habits associated with Safe Hypermiling In Singapore. These are completely the opposite actions from the bold heading.

 

For Safe Hypermiling In Singapore.

You still need to be highly aware and alert to hypermile safely. It is therefore a trait in "Hypermiling In Singapore".

As you have noticed in some replies here. It stresses some people out to drive conscientiously and consciously.

 

It takes concentration and effort to keep to the flow of traffic at sustained periods of time. It can be stressful to some if they are not conditioned enough to do it.

 

So happened that this technique coincides with safe and responsible driving habits. That's a good thing.

 

As i have mentioned earlier. Safe Hypermiling In Singapore requires you to regulate your speed to follow the flow of traffic.

 

Not slow it down or raise it up. It means that when flow is fast. Follow fast. When flow is slow. Follow slow. Just keep to a safety distance from the front. I really thought i mentioned this before.

 

 

With regards to

 

P.S. In reference to being efficient from 90 to 100kmh. To nitpick a lil In constant cruising, between 70 to 90kmh is most efficient for most vehicles when you compare time taken vs consumption, however for hypermilling the target is lowest FC (i.e. distance vs consumption) which is roughly between 50 to 70kmh. The exact speed would be dependant on each vehicle.

 

Good point above. Time vs consumption, distance vs comsumption.

 

That is very true. Each vehicle/model will have its own sweet spot km/hr. This will depend very much on the car's final gear ratio. Thought i mentioned about this sweet spot thingy before too. Why do i sound like i m repeating over and over.

 

Cars with good power to weight ration will enjoy a better chance of getting good mileage figures. Little stress on engine.

 

Agree with you on that point. The less stress you put on your engine, the better the FC.

 

To be clear. What i am talking about applies only to singapore roads. Only what is practical to our traffic culture here.

 

Therefore i always stress on hypermiling in a safe and considerate manner. We will leave the "foreign" negative techniques out from here to avoid misunderstanding. Otherwise have to repeat and re-explain because some don't bother to read the old contributions.

 

To avoid being mistaken or misunderstood I will usually put my heading in bold before i start. Safe Hypermiling In Singapore to make the line of discussion clear.

 

As i have mentioned before. To Hypermile is to do a set of things to achieve good km/L. It's a big term for several actions and steps to take. Don't get it mistaken with having ONLY to do with vehicle Activity & Motion.

 

Many things done together. Not separated. Hypermiling is a umbrella terminology.

 

So, should I put the heading as Safe And Considerate Hypermiling In Singapore before i type?

 

Too long?... Too short people misunderstand or say cannot see. Too long becomes too much to read. How?

 

 

[Hypermiler]

 

You driving a hybrid car? Which one?

 

Never seen the instrument display before. I am especially curious with the eco driving recommended by the computer. Read briefly about it only.

 

Can you describe how it works?

[Hypermiler]

 

I believe under ideal condition my previous Accent 1.5M (no modification) ever did 18.8km/l and 28.8km/l over distances of about 100km (even hybrid only 27km/l then)

 

That is a very impressive figure. Awesome!

 

I have yet to truely beat my average of 20km/L. 23km/L was a one off. Will use your record as inspiration.

 

[Joseph22]

I believe most techniques in hypermiling are fine with the exception of tail-gating practice. One rear end collision can wipe out the petrol/fuel saved over the previous months/years. I also use hill-climb and conering for braking/slowing the car

 

Dont think Tail-gating is part of Hypermiling, in fact they dont encourage tail-gating. at least that what the hypermiling website say.

 

anyway i dont do Hypermiling. but after reading i realise that i do Hybridmiling

Edited August 12, 2010 by Joseph22

[ShaniClinton]

The fuel is going to be finished in future so be careful to use it when needed.

 

Shani.

[5936]

Different hybrid have different instrumentation.

 

I can only show dashboard of Estima, since you are interested.

 

No Eco drive, but got EV switch to drive at below 25kmh, at most 1km only. Toyota say it's design for use when moving into quiet residential area, thus only 1km t most. But I reckon, battery not enough to sustain.

 

Most of the meters are self explantory.

 

From most left:

1) Fuel gauge

2) Energy meter ( real time KM/L readout)

3) Speedometer (top)

3) LCD message screen (bottom)

4) Rear motor electrical usage(top)

4) Regen Brake energy recovery rate(bottom)

5) Air con power usage

6) Aux power usage

 

[Wishcumstrue]

From http://en.wikipedia.org/wiki/Hypermiling:

 

"Hypermiling is the act of driving using techniques that maximize fuel economy."

 

I prefer to replace the word "act" with "art".

 

[Hypermiler]

 

Thank you 5936.

 

Liked how the display shows which energy source is being drawn and when the regen is taking place.

 

Very clear and simple indeed.

[Hypermiler]

 

Fuel Prices

 

Although the newspapers boasted that fuel prices ""tumbled down"" by 3 cents/L , it will never return to the days when a litre of petrol was never more than $1.50/L.

 

So for those who NEED to drive but don't agree with the current fuel prices, time to practise hypermiling.

 

Price hikes will be less noticeable.

 

 

[Hypermiler]

The fuel is going to be finished in future so be careful to use it when needed.

 

Shani.

 

While oil may finish soon. Natural gas will always be around. There are still layers upon layers of dead sea creatures buried and fermenting on and under the seabed.

 

I'm not saying that we can still use fuel the way we do now. Only have to adjust ourselves to a friendlier and conservertive way of "burning" it. Prolonging the existence of oil a little while more until we can find a more viable/practicle solution. This will also give the next generation some fun finding out how burning oil feels like.

 

Technology has not caught up fast enough yet to provide for the market make a complete replacement. Our current energy needs are still based on burning of fossil fuel... mainly driven by piston engines.

 

Likewise how we now feel about our predecessors who once burn coal and wood in their external combustion piston steam driven machinery.

 

We have not quite abandoned or moved away from the piston technology yet. Too much have already been invested into this technoloy. No economical ways to make big switch over to something else yet.

 

[Lectrosphere]

wao... am i too late for this thread?

 

well... the best fuel saving tips is your right foot!

[Cheesensation]

wao... am i too late for this thread?

 

well... the best fuel saving tips is your right foot!

 

 

Or like Johnny Walker always says, Keep Walking.

[Good-Carbuyer]

With the price of petrol at sky high levels this days, I have been adopting a conservative driving styles with grade 95 petrol and it is amazing how much I am able to hit 16.05km/lit with my face lifted 7th Gen Civic.

 

I also would like to know if I can use grade 92 now. Anybody can give me some insight here?

 

Thanks in advance!

 

Rgds,

GigaCrusher

 

I am also monitoring the same answer for my Myvi now. Hope to be pleased by end of the month

[Good-Carbuyer]

My car is auto 1.6L with HID frint lights. Trust me that driving styles really make a difference....I just need to remind the recent Shell competition to stretch the petrol dollar and the winner came in at an amazing 29km/L! What is amazing is the couple won in a Hyundai Sonata if I recall correctly...

 

Thats great. My Accent 1.5M only did 28.83km/l without competition