Fuel Misers

[Drago]

Well, the preheated seems to works. Was blowing warm air immediately, and the gauge was at normal operating temperature before I'd left the village. That means less time spent on the cold running program, less fuel used. I'll report back when I've done a few more miles and determined if it does improve economy as I suspect it does.

 

[Dirk]

Well, the preheated seems to works. Was blowing warm air immediately, and the gauge was at normal operating temperature before I'd left the village. That means less time spent on the cold running program, less fuel used. I'll report back when I've done a few more miles and determined if it does improve economy as I suspect it does.

It's just shifting the energy used to another point. Overall, from a 'save the planet' perspective, it's probably less efficient.

 

[Drago]

Although most of the energy came from the 5kW solar bolted to my roof, so I'm not so worried on that score. Hence my comment about a Tesla battery, which would allow me to do the same at night.

 

[Jody]

Well, the preheated seems to works. Was blowing warm air immediately, and the gauge was at normal operating temperature before I'd left the village. That means less time spent on the cold running program, less fuel used. I'll report back when I've done a few more miles and determined if it does improve economy as I suspect it does.

Where abouts does this heater sit. Is it in the header tank?

 

[Drago]

It sits beneath the expansion tank, plumbed in between the tank and the block.

 

[Jody]

It sits beneath the expansion tank, plumbed in between the tank and the block.

Never seen them before but intrigued on how they work. Does it have an internal pump or work on gravity

 

[Drago]

The Hot Frog has an internal pump, though some work by convection. Its on an internal thermostat so switches on and off as required, although the pump keeps going when the heater cuts put.

I've a busy day tomoz, but I'll try and slap up a pic on Friday.

 

[mustang1]

That depends on the piston speed of the engine.
At a given RPM a short stroke motor has a slower piston speed than a long stroke one and therefore less inertia for the same engine capacity. ie. a small capacity long stroke motor could generate more force than a large capacity short stroke one.

Long stroke also has more vibration and produces less torque.

 

[Ming the Merciless]

Another day of zero gallons used on the bike and walking.

 

[mustang1]

Absolutely! And long stroke motors tend to be those of a larger capacity, to give more time with each revolution for the combustion process to complete.

There are many, many, variables, but all other things being equal there is no reason in either physics or engineering why a 1.4 litre turbo of 100 HP should be any less durable than a 2 litre NA engine of 100 HP.

What if it the 1.4 was a 3 cylinder turbo intercooler supercharged engine and the 2.0 was a V6 NA?

 

[mustang1]

People by diseasels for the economy, and then cane them everywhere, utterly destroying any small advantage of owning one. Why?

I like the torque you get in a diesel. Press accelerator in right way and you get a wallop of speed.
Also buy diesel because buying some cars with petrol engine totally kills resale value (market perception and all that). Lower road tax.

In a nutshell, I don't think people buy diesel purely for mpg reasons, but I guess most do.

 

[mustang1]

and then map the daylights out of them, delete the DPF/cats and turn them into rolling coal. To the point where the youth think that a thick cloud of soot from a tuned diesel is a good thing.

I dislike the sound of a diesel car. The cool kids of today probably never heard the sound of a good petroleum engine.

 

[mustang1]

Well, the preheated seems to works. Was blowing warm air immediately, and the gauge was at normal operating temperature before I'd left the village. That means less time spent on the cold running program, less fuel used. I'll report back when I've done a few more miles and determined if it does improve economy as I suspect it does.

Does the pre heater warm up all the oil and stuff in the engine as well? Because if it didn't then maybe the cold running program should be used until the engine gf era to warm itself up as it expects?

 

[Drago]

Just to coolant, although the heat will work through the block. The cold running program richens the mixture and raises the idle speed, so running in the absence of it shouldnt be detrimental to the oil.

 

[Dirk]

Long stroke also has more vibration and produces less torque.

Really?