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Varitech Pty.Ltd. http://varitech-aust.com Design and Technology Developers Sun, 01 Apr 2018 18:42:54 +0000 en-AU hourly 1 https://wordpress.org/?v=4.8.6 29979344 What has man done!! http://varitech-aust.com/?p=1259 http://varitech-aust.com/?p=1259#respond Tue, 02 May 2017 06:28:50 +0000 http://varitech-aust.com/?p=1259

Continue reading »]]> What has man done!!

Many years ago someone invented the wheel for transport!

Prior to that some one invented man and animals with legs for walking snakes with bending bodies for transfer-motion on land, fish with bending bodies for travel I water and birds with wings for flight.

Walking is a efficient and excellent way of moving around a would that is not flat.

Transfer motion is good for soft terrains not hard flat.

Fish swimming in water bending bodies is great.

Flight is running then flapping wings, gently at first, then stronger till reaching a height and then gliding.

Everything was just happening till the wheel.

Man got SMART !!!!!!

He decided that he would not or would not copy any of these except some fishermen  who waved an oar at the back of their boats to propel them.

Rather than translation everything was rotation!!

Things got wheels

Everything that men made that had to travel across the terrain had to have wheels and the surface it travelled on  had to be smooth.

Instead of stopping and looking at the size of the road making problem man then started too deface the earth’s surface with roads tracks airports.

The screw propeller changes water motion.

Flight by flapping wings soon became not possible because they could not start with a gentle small stroke and increase it as required

Fixed stroke and fixed speed engines were soon making wing flapping out of the question. Instead translation was required at speed to fly. Helicopters an exception.

I believe that we should go back to before the wheel  for transport and rethink

One big mistake – the wheel has set man back a long way.

If all the energy wasted making surfaces for wheels to travel on was not done.

I believe that our grand designer must be sitting there wishing we could get our designs back on track.

So with this thought I now start a new mode of transport

It is walking

If a car could walk and run what a saving in infrastructure

So why don’t things walk

Because no one has troubled to design a walking motion.

Rotation of a wheel can be converted to walking motion

So a rotating machine can provide a walking motion

So motors can power walking

With variable stroke technology walking be controllable.

If all vehicles had legs and walked road surfaces would not be needed

Of course some would to really rough places

It planes could run and take off not travel on wheels they could land in many more places but I propose not running to take off I propose jumping and flapping wings like a bird.

History shows that man decided not to try to fly by flapping wings

It was tried and broke mainly because of the lack of control of the stroke

Stroke control is no longer a problem so I believe flapping wings will work

when powered by an engine.

Water propulsion by bending in the middle in a waving motion may be used like fish do and may be are far more efficient way of propulsion.

So with stroke control available waving of an oar at the rear or bending of the ships body could make it swim.

So what comes out of this is

God, whoever he is, where ever he is, designed us and our world in a brilliant way.

He designed us to self perpetuate.

I would like now to see us start reviewing and redesigning everything that has been invented since man started to use wheels.

One can see why the original designs are the best.

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Combustion and how it happens http://varitech-aust.com/?p=1230 http://varitech-aust.com/?p=1230#respond Mon, 12 Dec 2016 10:27:35 +0000 http://varitech-aust.com/?p=1230

Continue reading »]]>  So lets look at petrol engines which use a spark

to ignite a mixture of fuel vapour and air

Put our selves inside the combustion chamber—-there is this mixture in the air and in the corner is a spark plug.

The air around you is compressed as the piston rises under your feet at some point it stops and is ready to go down

You look across at the spark plug and a little flame appears which spreads all around you and most of the gas gets on fire as the piston below you feet is driven down

Not all of the fuel air mixture ignites and what does ignite occurs in quite along time

The flame has to travel around the chamber.

This is not efficient combustion approx 25% lost energy

 

Similarly when we look at diesel engine

Put our selves inside the combustion chamber—-there is air only and in the corner is a fuel  injector.

The air around you is compressed as the piston rises under your feet at some point it stops and is ready to go down

You look across at the injector and a fine spray of fuel appears which as it enters ignites because the pressure inside is so great that it combusts and  a flames spreads all around you and most of the gas gets on fire as the piston below you feet is driven down

This is not efficient combustion either approx 10% lost energy

It is obvious that combustion has to be improved

It has been found that

Put our selves inside the combustion chamber—-there is air and finely atomised fuel mixture.

The mixture around you is compressed as the piston rises under your feet at some point it reaches that pressure at which the mixture –the WHOLE MIXTURE  — will ignite due to compression.

You look across and every little molecule of mixture is ignited simultaneously and

combusts and  a flames have happened in every corner at once

this is complete combustion but did you notice that the piston below your feet is still on its way up, and the ignition is actually occurred on the way up ===

==NO GOOD==

This, the problem here is today’s inventors problem to time this combustion to occur as the piston comes to the top and then to make it happen if the fuel has a slight change in quality or climatic conditions..

this combustion is called HCCI Homogeneous Charge Compression Ignition

 

Engineers have spent many years trying for this goal!!

  • If HCCI were adopted in all the shipping in the world where combustion was more efficient and pollution far less and shipping costs reduced
  • Similarly trucking using HCCI would be more efficient and pollution far less and shipping costs reduced.
  • HCCI has another advantage in that many different fuels can be used in one engine.
  • This means defence of the country means any fuel found in the field during war can be used.
  • It means the poor countries farmers etc could grow there own fuel.
  • It means that the car industry as we now it can be saved.
  • It may mean that generation of electricity using piston engines may be a proposition.
  • It means that airborne illness could be reduced in the world.

 

Many global car companies are trying to achieve HCCI

GOOD NEWS

There is one company which has solved this 100%— the ignition occurring at the top of he stroke for every stroke

Varitech pty ltd

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Take one step back and review our progress http://varitech-aust.com/?p=1072 http://varitech-aust.com/?p=1072#comments Sat, 11 Apr 2015 02:47:20 +0000 http://varitech-aust.com/?p=1072

Continue reading »]]> I am proposing that the next generation of engine should be the nucleus of a brand new approach, not “doctoring up” the old one.

The basic engine principal was invented and produced around 1900 AD – a very good piece of technology when there was unlimited fuel and the only problem with exhaust was it smelt a bit.

Suddenly pollution, global warming and fossil fuel shortages (“the pollution years”) hit the headlines and rushed engineers into modifications to the basic engine.

Our technology suggests that we get the basic, unimproved engine-block design and simply make it adjust itself to our requirements – that is a new engine-block with variable stroke for each of its pistons. (Our term DVST “Dynamically Variable Stroke Technology”)

With this new starting point the problems of waste caused by engines being a fixed size big enough to go up hills and too big to go down the other side.

During the “pollution years” development of ideas was at its peak. Engineers discovered that if the fuel/air mixture in an IC petrol Engine could be compressed by the piston till it exploded rather than spark ingnition, gave an increase in fuel efficiency of approx 25%. (Their Term HCCI “Homogeneous Charge Compression Ignition”)

Using a spark plug to ignite a partially squeezed fuel air/mixture which gave ignition at one point spreading out and not including all of the mixture before the next cycle.

Engineers also discovered that if an air only mixture was squeezed beyond the point that fuel (diesel) exploded and then fuel was injected under high pressure into the engine it also ignited from the injector spreading, as with the IC petrol spark ignition, out and not including all of the mixture before the next cycle.

To vary the amount that the fuel is squeezed DVST is very effective without further additions to the engine.

All fuels need to be squeezed different amounts before they explode.- DVST allows for this when looking at new fuels.

Obviously attempts to achieve DVST are numerous over the last 100years but none have been used for production vehicles because of their complicated unreliable designs.

Our DVST is simply a geometric solution using Hypocyclic gears which were discovered in about 1500AD. No levers , cams or trinkets.

Understandably the motor industry has to adjust to such a simple solution to their biggest problem for 100years.It is said that the simplest solution is the best.

Looking further away from the engine industry.

Pumping oil with a piston pump has always given a predetermined delivery – now with DVST it can give a variable delivery without extra flow control valves. Our technology actual senses  the load on the pump and regulates the delivery itself.

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The Size of Items Purchased http://varitech-aust.com/?p=897 http://varitech-aust.com/?p=897#respond Sun, 19 May 2013 03:50:41 +0000 http://varitech-aust.com/?p=897

Continue reading »]]> When ever you buy something there is a process which goes through your mind?

You assesses

  1. A need for an item
  2. The size to do the biggest job you can think off
  3. The price of that item
  4. Can you afford this item
  5. Should I get the next size up just in case because you can afford it.

The result

Probably purchased an item too big for the job , but “no worries it will be OK”

Based on your financial position this is how it works or, someone else has or has seen one this size and you get one this size or perhaps bigger.

The fact that size seems unimportant to a world that has everything, no one stops to think about the consequences.

Any well designed object runs at its best efficiency at full load. (Note ! the percentages are for illustration only).

  1. The 1% of the  time it is used at full load efficiency =============       99%      say
  2. 9% of the  time it is used at ¾ full load efficiency =============         80%
  3. 60% of the  time it is used at1/2 full load efficiency = ===========        75%
  4. Remaining 30% of the time it is used at 1/4full load efficiency ==== =      60%

From these estimates  it runs at 74%  throughout  it’s life or 26% of waste

This is because we could not purchase one item to suit all the load applications. – the ideal is a variable item which maintains the high efficiency for any load.

A device to do this was conceived to make electric motors vary in speed – for example refrigeration, electric drills. The result a large increase in efficiency say 25% minus losses 10% due to heat loss in the controller .

These losses appear over probably 10 major items per family in Australia

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Variation in our time! http://varitech-aust.com/?p=798 http://varitech-aust.com/?p=798#respond Mon, 28 Jan 2013 03:28:46 +0000 http://varitech-aust.com/?p=798

Continue reading »]]>  

“VARIATION – A REQUIREMENT  FOR EVERY DAY ITEMS”

 It is better to have one item of variable size to cover all requirements than many different sized items.

We may be tempted to use something to do a job that was too big or too small!

Flexibility is the answer! we waste far less  energy, money, natural materials and time.

 The trouble is once an item is produced and sold and we are used to it, improvements in the original design are rarely considered. 

Inefficient changes to items that occur in numbers as large as these mentioned, have catastrophic effects on our World efficiency, pollution and quality of life. 

Look at inventions as they were when they were first released to the public and review the some of the changes made to them to achieve our needs. 

Car engines originally invented had one speed and power output. 

Variations were required to make them useful – people wanted to travel fast or slow, up hills and down slopes at a safe speed. – a throttle was immediately added followed by variable valve timing, reducing active cylinders and variable pressure turbos. 

Note! These were all improvements added without looking at the fundamental problem –  that the physical size of the engine needed to be variable 

Refrigeration originally invented had one speed and power output. 

To save energy the motor driving the compressor was made to change its speed with “inverters” 

Note! Speed control was added (which in itself uses energy in the form of heat) without looking at the fundamental problem that the physical size of the compressor needed to be variable. 

Hydraulic Pumps are part of everyday life – cars, trucks, tractors, earth movers, outboard motors, ships, cranes, lifts, industry and manufacturing. 

                  A (swash plate) special pump has been designed and used universally to achieve variable flow with fixed pressure 

Note! The fundamental problem that the physical size of the compressor needed to be variable was addressed , but a simpler and cheaper alternative is now available 

Each one of these examples illustrated shows that even though the problem was addressed, the efficiency of  the item was affected. 

Each of these items have a crank and connecting rod of fixed travel giving a fixed SIZE. 

Varying the stroke while it is running is the fundamental solution to VARYING SIZE.

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What if? http://varitech-aust.com/?p=776 http://varitech-aust.com/?p=776#respond Sat, 19 Jan 2013 01:15:25 +0000 http://varitech-aust.com/?p=776

Continue reading »]]> what if?

We had the choice of  size of things that we buy simply by having them adjustable in size?

We would only need to buy one item for each application!

We wouldn’t use something to do a job that was too big or too small!

Flexibility is the answer!

This makes us waste far less  energy, money, natural materials and time.

The next time you use something – look at and say “could this be made adjustable?

 

This is the way inventors think of new ideas.

 

A new idea needs an inventive ability to bring this to reality.

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PROGRESS OF THE CAR ENGINE part 3 http://varitech-aust.com/?p=649 http://varitech-aust.com/?p=649#respond Thu, 02 Aug 2012 07:21:07 +0000 http://varitech-aust.com/?p=649

Continue reading »]]> Since approx 2005 development has travelled “away to the side” to achieve improvement because variable stroke technology had not yet been invented to practically function for a production vehicle.

New technologies being used to simulate Variable Stroke Technology and HCCI are Variable valve timing, Variable Valve Actuation and variable delivery Turbos applied to petrol and diesel engines as an interim measure until Variable Stroke Technology could be invented and developed.
 
It can be seen that the development, maintenance and construction is a precision operation hence expensive and sensitive to damage. Improvements in performance are considerable.
 
Variable Valve Actuation
  Must be applied to dual overhead cam engines meaning single overhead cam engines are not applicable and will have to be phased out.
The valve timing is set to not fill the combustion chamber with intake stroke making the compression ratio vary – the requirement for HCCI.
              The valve timing can be set to reduce pumping losses during deceleration. 
Turbos
                  To give smoother operation for passenger cars development of the variable delivery turbo has made diesels an option for them.
Factors which are to be noted are:
  1. Miniature adjustable angle vanes rotate at quote speeds up to 100,000 rpm in engine oil pressure fed floating bushes.
  2. Special materials are used to withstand high speeds and temperature.
  3. Dual-stage technology is also being applied to passenger cars.
  4.  Diesel Fuel injectors:
  Many hours and dollars have been spent on development of fuel injectors to deliver fuel in an efficient way to the combustion chamber as quickly as possible. – to create accurate flame timing.
Each injector has a many precision components and there is one for every cylinder. 
Fuel Pumps:
                  A precision machined pump designed to handle pure clean fuel. And deliver it at a high pressure is always required where fuel is injected into the cylinder at the top of the combustion  stroke.
 
This is I understand it !
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THE PROGRESS OF THE CAR ENGINE part2 http://varitech-aust.com/?p=586 http://varitech-aust.com/?p=586#respond Thu, 17 May 2012 08:12:59 +0000 http://varitech-aust.com/?p=586

Continue reading »]]> Around 2000 AD someone realised that everything done so far was on the “Top Part” of the engine only

It had been noticed that if one could vary the stroke of the engine while it was running advantages could be achieved. A change to the Bottom Part!

  1. Variable Compression Ratio (VCR) – changes the performance of the engine with compression – the size of the engine changes as required.
  2. Homogeneous Charge Compression Ignition (HCCI) – meaning 

Homogeneous charge – all as one – the charge of fuel and air are properly mixed.

Compression Ignition – Ignites when compressed to a certain point (not to be mistaken for Diesel, which ignites because the fuel is injected in a compressed environment. Compression is greater than required for ignition)

The advantages of this ignition are that it is uniform throughout giving 25% efficiency improvement.

For the next 10 years or so till about 2010 AD motor manufacturers around the world had prototypes of variable stroke engines (Dynamically Variable Stroke Technology DVST) with some success, but none actually reached production volumes because of complications.

Governments encouraged this development.

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THE PROGRESS OF THE CAR ENGINE part1 http://varitech-aust.com/?p=580 http://varitech-aust.com/?p=580#respond Sat, 21 Apr 2012 04:26:55 +0000 http://varitech-aust.com/?p=580

Continue reading »]]> The car engine as we know it is one of the most engineered items that man has developed since approx 1900 AD

 

It comprises of two parts:

 

  1. The “Top Part” which is everything above the engine block
  2. The “Bottom Part” – the engine block (the forgotten part which is below the top half )

 

From 1900 AD the engine has need improvement continuously to fit the needs of the people:

 

  1. Change to 4 cylinder to give more power
  2. Battery spark ignition and starting
  3. Automatic advance and retard of ignition – better economy and power
  4. Multiple carburettors – more power – less economy
  5. Superchargers – more power – less economy
  6. Turbo-chargers – more power – better economy
  7. Polishing and grinding ports – performance
  8. Greater than 4 cylinders – more power – less economy
  9. Overhead valves – more power – better economy
  10. Fuel injection – more power – better economy
  11. Electronic fuel injection – more power – better economy

 

By this time it was about 1980 AD where it was obvious that Pollution was also a factor!

 

Attempts to improve this were added:

 

  1. Exhaust recirculation
  2. Fuel tank breathing
  3. Crankcase ventilation
  4. Catalytic converters
  5. Try using Diesel engines more

 

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