Stop & Start System (SST) for any car?

Tips, advice and tips to lower your consumption, processes or inventions as unconventional engines: the Stirling engine, for example. Patents improving combustion: water injection plasma treatment, ionization of the fuel or oxidizer.
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Macro
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by Macro » 17/07/13, 14:51

the consumption of a pump is directly linked to its flow even if the discharge pressure is + / - = 0.

For me no worries to suppress your DA pump
http://wilblogmeca.blogspot.fr/2012/05/ ... voici.html
the original assembly
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the change
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To determine the length of your new course, a meter of seamstress wound on the new path
it must be 6 streaks on oscarrotte you type direct in reference 6pkX (X being the number of mm tensioner completely relaxed and hop and zou : Cheesy: : Cheesy:
Last edited by Macro the 17 / 07 / 13, 14: 55, 1 edited once.
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chatelot16
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by chatelot16 » 17/07/13, 14:52

eh yes ! an alternator for the flywheel

you need a flywheel for an engine to work well, and it's a little sterile weight: if this same weight is the rotor of a flywheel-shaped alternator, we can say that half the weight of this alternator replaces the wheel

the next step is to put the clutch between the engine and the alternator flywheel: suddenly this alternator flywheel can drive the car with the engine off

when there is a need for the engine we engage and it finds its flywheel

but this is no longer DIY ... it is the design of a hybrid car
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by Macro » 17/07/13, 15:01

It's been since this morning that I scratch everywhere the photos of psa belts on the net to realize that the arrangement of the rollers and equipment are almost similar on all their engines ...
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by Macro » 17/07/13, 15:11

chatelot16 wrote:eh yes ! an alternator for the flywheel

you need a flywheel for an engine to work well, and it's a little sterile weight: if this same weight is the rotor of a flywheel-shaped alternator, we can say that half the weight of this alternator replaces the wheel



I even have one in stock that is waiting to be grafted into an organ requester which has 2 flywheels ... one box side and one alternator side but hey it's a 3 cylinder prototype
https://www.econologie.com/forums/j-ai-trouv ... 12441.html
http://www.oliomobile.org/fr/forum/down ... &mode=view

For info..All recent cars that I have tinkered with lately have alternators driven by freewheels ... Why..I don't know..Always it is that when they are hs (seized) it causes hellish vibrations. ..
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by chatelot16 » 17/07/13, 16:17

I have already noticed this kind of freewheel on alternator pulley when I saw parts at a recuperator: it surprised me and I do not understand its usefulness
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by dirk pitt » 18/07/13, 13:31

Macro wrote:the consumption of a pump is directly linked to its flow even if the discharge pressure is + / - = 0.


oops, I can't let that be said without reacting.

the hydraulic power of a pump is an exact combination of its flow and its pressure.
P (kW) = (Flow rate (L / min) x Pressure (bars)) / 600
the mechanical power will depend a little on the type of pump but if the pressure is zero, the power is close to ZERO, only the losses.
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by chatelot16 » 18/07/13, 13:45

the useful power of a hydraulic pump is indeed the multiplication of the pressure by the flow: if zero pressure zero theoretical power

but nothing is perfect, there is pressure drop in the pipes and power loss in the pump, and the power consumed in a zero pressure pump is far from zero!

worse this lost power strongly depends on the speed

the pump is calculated to have a sufficient flow at low motor speed: therefore much too high flow at high motor speed ... and lost power which increases with the cube of speed!

Hence the big advantage of the electric steering pump which turns just at the useful speed and never more, which means that despite the loss of the passge by electricity we gain!

according to the image that has been shown you have to find a belt of the right length to avoid passing over the pump
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by Macro » 18/07/13, 15:51

A power steering belt starts to squeal when you turn the steering wheel and the pump growls at that time and it's good because of the flow ...
Pump I have a few dozen that turn to my ears all day long they are centrifugal the curve is quite different but on volumetric with internal bypass we have similarities ...

of memory on the one that is inspected the most at 240m3 / h and 5,8bars they are at 170A at 120m3h and 6.3bar they are at 100A .. And discharge at 1.5bar the flow rises to about 440m3h ... And there we are in 240A, we have to "winnow" it otherwise the engine thermals jump ...

The DA pump set with its free return to the bowl will be in exactly the same kind of configuration ...
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by dirk pitt » 18/07/13, 16:10

Macro wrote:of memory on the one that is inspected the most at 240m3 / h and 5,8bars they are at 170A at 120m3h and 6.3bar they are at 100A .. And discharge at 1.5bar the flow rises to about 440m3h ... And there we are in 240A, we have to "winnow" it otherwise the engine thermals jump ...
.


240000x60x5.8/600=139kW hydrau
120000x60x6.3/600=76kW
440000x60x1.5/600=66kW

in the latter case, another factor must intervene such as the losses due to an overspeed so that the elec power rises while the hydrau power is low.
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by chatelot16 » 18/07/13, 16:49

why does it squeak when management comes to a stop?

when the steering wheel is not touched the distributor lets the oil return to the tank with the minimum pressure: minimum power

when you turn the steering wheel it sends the oil into the cylinder: a little stronger pressure, and power too

when the cylinder reaches the end of the stroke, it puts the maximum pressure: maximum power, it opens a safety valve, and some valve whistle

often also the belt slips before the valve opens ... often it is unclear, there are both at the same time, valve noise and belt noise

nothing to do with centrifugal pumps which have a different behavior: when the flow is reduced by blocking the circuit the pressure does not increase much and the power decreases
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