Siemens Inductive Charging

Posted by Wael A. Saad On Thursday, 31 May 2012 2 comments


vision of the future of wireless power. In the future, electric vehicles may be able to charge their batteries wireless.Siemens is active in this field and develops a safe and convenient technology for wireless charging.

Siemens and BMW are partnering on a field trial for inductive chargers. In way of thinking these can be installed into vehicle parking, taxi cab, and of course driveways, sunk right into the ground.

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Video : Amazing Full Drift C 63 AMG

Posted by Wael A. Saad On Tuesday, 29 May 2012 1 comments

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Top Tips for Hot Summer Driving

Posted by Wael A. Saad On Monday, 28 May 2012 4 comments

“A clever person solves a problem. A wise person avoids it.”

Thank you Einstien, you are living in my heart. That was true, so that here are the top tips to avoid hot summer driving problems
Drive safely

1- Your Health and safety:

- Keep a car fire extinguisher near to you, just in case.
- keep a large bottle of water near to you and may be some of your favorite fruits, snacks, juice, or cold drinks. Sunburn affects your body's ability to cool itself and causes a loss of body fluids.
- Do not leave Children or pets in a Car alone. Even if the car was air conditioned or the windows are open. Don’t leave them fallen asleep in the car.
- Avoid sudden change in temperature; this will be stressful to your body. Stay one min in your car with opened windows to gradually temperature change.
- Direct sun exposure so harmful.
- In case of driving or riding in a convertible, wrap your hair well, wear a sunglasses, or wear a hat.
- Keep a fully-charged mobile phone with you in case of emergency
- If you are 65 years of age or older, keep in contact with a friend along the way
- keep the first aid bag
Please Drive Safe

2- Your car health and safety 

- Check tire pressures, avoid tire over pressure due to hot roads.
- Check your radiator coolant levels, and be sure there is no leakage under your car or around the radiator, and hoses.
- Check your engine oil levels, and be sure there is no leakage under your car or around the engine
- Check the cooling fan for proper operation
- Don’t fill your fuel tank up to the brim, the heat expansion could cause a fuel leak.
- Don't splash hot engine or brakes with water. This is  extreme thermal stress over any hot body.
- Park in the shade.

Drive safe, and remember there is always someone waiting for you, and another one is writing this article for you :) waiting your comment too
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What is hybrid? P2

Posted by Wael A. Saad On Saturday, 26 May 2012 0 comments
Hybrid not zero emission car, but Lowest emission with highest energy saving. This  is great goal in manufacturing fields.
 
Car owner: can we continue now.  
Hybrid Car
Auto: sure.

Auto: A lot of systems are involved into hybrid cars, to achieve two main propose. The first is how to reduce the emission as we mentioned before European want to reach 95 g/km at the next 8 years. 

The second is hoe to reduce energy wasting to increase the efficiency of the car. Here is a simple operation overview to open the understanding gates of energy and emissions reduction:

The hybrid main components are Engine, Motor, Generator, and Planetary Gear. The planetary gear "its working as power split device" combined them to resulting one output goes to reduction unite, hence to the differential gears. The previous combination called "hybrid-trans axle".


An ECU (Electronic control unite) organizing whom will be a driver and which will be driven. Actually based on, the state of operation "start-out, accelerating, decelerating, or stopping" the ECU is acting. The ECU sends its signal to feed the motor by the batteries energy to move the car, or start the engine to supply its energy to the generator which will recharge the batteries.
 Also, the engine can share its energy to run both of the car and the generator at the same time, and both of them "Engine, Motor, and the Generator" can works together.

Auto: this was an overview, now how we save energy and reduce emissions, here is some of systems explanation shows how is that works :

     This system recover the wasted energy during braking or deceleration.

     During cold engine starting, Hydrocarbon "HC" emissions kept inside the car to be fully burned or purged. That improves the exhaust emissions at low temperature.

     No more starting a cold engine, because this system pumping hot stored water to worm-up the engine fast this reducing fuel wasting during engine worm-up, and also reduce the HC emissions that generated at cold starting

      A device installed to reduce the vaporized fuel loses, therefor the evaporation emissions is reduced too.

Auto: and that's not all, even engines includes systems help to reduce fuel consumption and increases engine efficiency beside that improving the emissions.



Read Part 1..... Press Here
If you want to knew why are cars getting greener? ... Press Here 
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What is hybrid? P1

Posted by Wael A. Saad On Wednesday, 23 May 2012 0 comments
Electric Vs. Gasoline


"Walk, bike, take the bus, train whenever possible, Drive less, and Start a No Driving Day once a week to save the the world " the Entire World ...1900

 Car owner: Hello, Auto.

Auto: hay, how are you?

Car owner: i am so happy, I have bought a new hybrid car. I am saving the world.

Auto: Actually, you almost there.

Car owner: What?


Carb Emmision groups
Auto: inventing a hybrid car was the solution for many problems. we cant use electric car all the time while engine polluting every thing " See Electric Vs. Gasoline figure". there is a classification of car emissions "Check the CARB emission groups", And hybrid cars are not zero emission.  

Car owner: can you explain more?

Auto: i will give you an Overview:

Hybrid components:

The main components of hybrid vehicles are:
1- ICE   -- Engine.
2- MG1 -- Motor Generator 1
Hybrid Components
3- MG2 -- Motor generator 2
4- PSD -- planetary gear set "Check power split device animation"
5-Inverter
6- HV--High voltage battery
7- ECU -- electronic control unite



Operation modes: check this flash
1- stopped
2- starting out
3- normal Driving
4- Acceleration and full throttle
5- Deceleration and braking
6- Revers

by using a hybrid car, you are helping to reduce the emissions and wasted power.
check part 2 for more .....Press Here
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why cars are getting greener??

Posted by Wael A. Saad On Monday, 21 May 2012 5 comments

“We’re borrowing money from China to buy oil from the Gulf to burn it in ways that destroys the planet. Every bit of that’s got to change” …….. Al Gore, July 2008

Car owner: Hello, Auto.
Auto: Hello, Dude. Why are you upset?
Car owner: they told me I have to change my car, or i will die. Do you believe that?!!!!
Auto: I am afraid, this is true.
Car owner: what?! are You  kidding me?
Green Car
Auto: No, but let me explain to you….. 
Here we go, Facts:
+   Vehicle exhaust contributes roughly 60% of all carbon monoxide emissions nationwide, and up to 95% in cities.

+  Average new car emissions in Europe are 138g of carbon dioxide per km, but the European Union has set a target of 95g per km by 2020.

On the other hand, you should imagine how much are those circles are complicated. Your old car is destroying the earth, and consumes a great amount of resources like fuel, and the manufacturing materials. That’s all to save your time and to make you feel comfort.

Vehicle Emissions
As a return, you win a lot amount of pollution “CO, CO2, NOx, VOC, etc….” which actually affects the entire world, and that including you.  “Read this report for more details
Here is another fact

Green Cars are no longer an option, rather a global game-changer whose future is “when”, not “if”. Inflection point on the horizon.
Car Owner: Green Cars!!!!!
Auto: yes, Green cars. The solutions are simplified into equation hard to be solved. We need a car with
1-            Low emissions or without emissions if possible.
2-            a car with Light weight to reduce energy consumption.
3-            Stable and safe car for drivers.

Car owner: I can’t see any problem with that.
Auto: when automakers was trying to find a clean fuel. They found choosing between many options are not an easy thing, but finally Electric or Nitrogen was the best options.
If they choose the electric, we will need large batteries to store the enough energy. Large batteries are over load to the car weight and that energy wasting. “Easy come..Easy go”.

 Another problem, how to charge batteries? Solar energy needs bulky solar cells which increases vehicle weights, which originally we want to reduce it. Not to mention, non-sunny countries. And we can’t plug the car along the run ways.

By the same way for liquid nitrogen, energy is wasted during liquefaction process. Beside this, while leakage, it reduces the oxygen concentration if poorly ventilated store area is used. Liquid nitrogen can cause frostbite and can make some materials extremely brittle. Its explosion is so risky.

Conclusion: electric it self is not suitable energy to run a car. And such a light weight car couldn’t be established specially when safety is the mean issue. Liquid N2 is not the suitable fuel too because it’s become danger if leaked, spilled or explode.

So that, We use hybrid cars. Read more... Press here
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Hybrid cars are green

Posted by Wael A. Saad On Saturday, 19 May 2012 12 comments



hello everyone, under this line there are two sliding faders go play with them a little














OK stop playing, this is not online game , :) just kidding

thank you Eahart.com for this cool animation ;)

How is hybrid cars working?

It's so easy, hybrid cars are working with a combination of three rotating devices. An engine, motor, and generator are three rotating devices combined together with a mechanical element called planetary gear   Power Split Device.

power split device
The power split device is a Gear system design which gives 3 rotating shafts to be rotate together.

The figure shows typical power split device. Read more ... Press here
Hybrid cars use this combination to reduce the usage of the diesel engines which contaminate the air, and water. By using motor + battery we produce zero emission, but why we use this combination?  Press here
 to discover the answer.


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Car simplification: 1- what is car? P3

Posted by Wael A. Saad On Friday, 18 May 2012 7 comments
 
Any one is missing me? (o,O)     NO matter my girlfriend still with me, and as I remember we was talking about her kind Heart, sorry I mean her engine.

Car simplification
what is car? Part 3

We was talking at “Part 2” about, what is engine and how is simply working. Also, we discussed briefly how the fuel is entering the chamber, two more things we need to talk about the 1st is (how to ignite the fuel?) And the 2nd (how we start the engine?) so, let us start.

How we can ignite the fuel?

There are two basic methods to ignite the fuel into internal combustion engines:
               1-      Self Ignition. (called Diesel Engine)
               2-      Using ignition system. (Called Benzene Engine)

       In fact this is one of the main differences between Diesel and Benzene Engines. In addition to, power, speed, and size. But we will discuss the differences later.
-        
           * Based on pressure and temperature relations when we increase the pressure the temperature increases too. That’s why we use gasoline as a fuel for Diesel engine.
     

     * When the pressure of the gasoline increase, the gasoline will be fire at (about 250 deg. C) without any ignition spark. This temperature called (Self Ignition Temperature).
Ignition System with Distributor.
   



     * The benzene could not be self ignited, because it’s need about three times gasoline pressure to be self ignited which is extremely hard to be achieved (about 550 deg. C)
    


      * Spark-plug with spark Distributor is needed to firing the fuel at Benzene engines, with certain firing order. But some cars distributor-less or it electronically distributes the sparks to the spark-plugs.
   


Distributor-Less Ignition system
      * A spark is a highly voltage charge runs through a wire connected to the spark-plug.

     *As conclusion if u r using diesel engine, you don’t have ignition system. But if you have benzene engine you may have distributor or distributor-less ignition system.









thank's for howautoworks

But how the engine start, this will be our next part, Go  check part 4
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Video: Brake System 6-3

Posted by Wael A. Saad On Tuesday, 15 May 2012 2 comments



Press to Watch Brake System Video 1
Press to Watch Brake System Video 2
Press to Watch Brake System Video 3

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Video: Brake system 6-2

Posted by Wael A. Saad On 0 comments





Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Video: Brake System: 6

Posted by Wael A. Saad On 2 comments

Follow the next links now to read more

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Car simplification: 1- what is car? P2

Posted by Wael A. Saad On Sunday, 13 May 2012 18 comments

My girl friend, she is have strong and smooth body, a beating heart “little faster but, its ok.”, a thinking brain and, a flowing blood. She can breathe, dance, drink, eat, and even she feels my sensation “yup, she is”. But she is blind “So poor :-(“. So I promised her to spend my life driving her along the off roads. 


This is true; cars bodies are made to be smooth to reduce air resistance, and strong in case of accident. Engines works as a heart to the car and its beat is varying between 800 rpm to 6500 rpm. The ECU (Electronic Control Unite) plays as the brain so that, its can think. Liquids are flowing inside the engine, brake, and the cooling system. It can breathe and drink (Air + Fuel) the Air-Fuel mixture, Dance when you drive it. Finally, eat your money if she went sick.

Car simplification
what is car? Part 2

But, how is that working together?
A great car designer’s are working to establish the relations between the discussed main parts.
                                                       “Read Part 1”.
When the relations are established, the car goes acting like human being.
Let us knew briefly, what every part is doing to establish the relation.
        1-      The Engine (Internal Combustion Engine).


What is the engine?
Engine is a mechanical device, which convert energy that exists due to combustion of air-fuel mixture into a rotational movement. [Chemical energy to Mechanical energy]
4- stroke Engine
When firing a pressurized "air-fuel mixture" that inside a sealed chamber with only one moving side (called a cylinder), an extreme explosion occurs forces the moving side to move in the opposite direction of the explosion (result of pressure increases).

The moving side (called a piston) connected by mechanical components (called connecting rod) to a type of rotating shafts with special design (called Crank Shaft). This arrangement of parts forces the crank shaft to rotate. Now the movement is established.


This cycle repeated, entering the mixture, increase the mixture pressure, firing the mixture, and let the exhaust exit.


Every step of this cycle called a stroke, which means we have four strokes in one cycle and that gives the engine another name (four – stroke engine). 
Engines commonly have an arrangement of 4, 6, 8, or 12 cylinders. Those may be arranged v-shape or in-line.    


How dose the air-fuel mixture entering the chamber?
Fuel System


There are too many ways to entering the mixture into the engine chamber. The old way is called carburetors but after development, a new era of injection systems and turbo chargers are appeared.


Injection systems are the responsible part to inject the fuel into the engine chamber while turbo charger increases the rate of air charging.

Bosch Fuel Injection System
On the other hands, at the top of every chamber a set a valves works to entering the mixture, and exiting the exhaust gases.

The four valves for each cylinder are commonly used. The 4 valves are divided (two valves for the intake, and two for the exhaust). A driving shaft (called camshaft) is swing the valves into open-close position.




But how we can ignite the mixture inside the sealed chamber?
What is gasoline and petrol? And what is the difference?

All will be answer follow the next part, to be continued……

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Car simplification: 1- what is car? P1

Posted by Wael A. Saad On Saturday, 12 May 2012 2 comments

car simplification
what is car? part 1
   
Introduction:
Start Taking about cars required much thinking to decide where to start from?. So that, I decide to start from zero :) . Yes, from zero.

What is Car?
Cars, vehicles, automobiles, trucks, or even autos are different names for the same thing. Car is a device helping you to not suffering. In other words, a car saves your time, effort, energy, and goods. Cars can be your sport, hobby, study, home, friend “Transformers are example:) ” or a slave waiting at the garage for your orders.
But, technically car is combination from a mechanical, electrical and, Accessory parts assembled by mechanical angels.

What are main Car Parts?
1-      Engine (petrol, gasoline, electric motor, or combination of them called hybrid ).
      Gives the car POWER to run.
2-      Transmission system.
      For speed variation.
3-      Steering system.
      To control the direction.
4-      Braking System.
       To stop the car when you need.
5-      Suspension system.
      Comfort for the driver and the passenger, and safety for goods.
6-      Safety parts.
       Ensure you are safe.
7-   Electric and electronic systems
       Parts communicating
8-      Body and chassis.
      To contain the previous parts and the driver.    Read more about Brakes

What are the components“not important or luxury”?
1-      Sound system.
2-      Air conditioning system “not for all countries”.
3-      Some accessories.


Are there classifications for cars?
Yes, there is too much classification or categorizing method here are some of my opinion   
      1)      Classification due to usage:
     

     2)      Classification due to numbers of passengers:
   

     3)      Classification according to body shape:
    

    4)      Classification according to performance and customization:
FHWA Classification Chart
FHWA Classification Chart
   

    5)      Classification according to number of axis:
    6)      Classification due to vehicle weight :
   

    7)      Classification according to manufacturing country :


As shown above cars can be classified to million ways. Check another article at Wikipedia
but this is not the end, every day a new brand or  modification is exist, on other hands care model can be classification or categorizing method.

Read Part 2 >>> Press Here

   
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Video: Gasoline Engine

Posted by Wael A. Saad On Friday, 11 May 2012 1 comments


Amazing Video from Toyota Teams:
the video show internal engine parts, engine testing, engine disassembling methods, and a various information abut Engine overhaul 

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Brake System: 5- BAS (Brake Assist System)

Posted by Wael A. Saad On Thursday, 10 May 2012 26 comments
 5- BAS (Brake Assist System)
What is BAS?
Simply, a brake assist system monitors the driver’s use of the brake pedal, automatically sensing an attempt to stop the car as a result of panic.
It then provides very high braking power, even when the driver is only pressing gently on the brake pedal.

When this is used together with anti-lock braking systems, it success in faster and safer braking.
Brake assist system
BAS Action chart
Depending on the driver, statistics for emergency stops in cars using this technology range from a 20% - 45% reduction in stopping distances, a potentially significant difference in critical situations.

Some road tests show that a driver requires up to 240 feet (73 meters) to stop a car heading around 60 mph (100 km/h).

 In the same circumstances, cars with brake assist were able to come to a complete stop in as little as 130 feet (40 meters).
Since it only takes one-fifth of a second to travel a car length at highway speeds, the superior speed with which the brake assist is able to react also accounts for its improved safety results over traditional braking systems.


Press to Watch Brake System Video 1

Press to Watch Brake System Video 2
Press to Watch Brake System Video 3

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Brake System: 4- LSD (Limited Slip Differential)

Posted by Wael A. Saad On Wednesday, 9 May 2012 38 comments
4- LSD (Limited Slip Differential) 
A limited slip differential (LSD) is a modified or extracted type of differential gear arrangement that allows for some variation in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity.
effect of LSD
LSD Effect On The Road

The main advantage of a limited slip differential is found by considering the case of a standard (or "open") differential where one wheel has no contact with the ground at all.

In such a case, the contacting wheel will remain stationary, and the non-contacting wheel will rotate freely

the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, thus the vehicle will remain stationary. In everyday use on typical roads, such a situation is very unlikely, and so a normal differential suffices.

For more demanding use, such as driving in mud, off-road, or for high performance vehicles, such a state of affairs is undesirable, and the LSD can be employed to deal with it. By limiting the velocity difference between a pair of driven wheels, useful torque can be transmitted as long as there is some friction available on at least one of the wheels.

Press to Watch Brake System Video 1

Press to Watch Brake System Video 2
Press to Watch Brake System Video 3

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Brake System: 3- EBD (Electronic brake force distribution)

Posted by Wael A. Saad On Tuesday, 8 May 2012 2 comments
3- EBD (Electronic brake force distribution)

What is EBD?
When a rotating wheel is subjected to excessive heavy braking, it is prone to lock-up. In motor vehicles,
the anti-lock braking system (ABS) works to prevent this by monitoring wheel speeds and taking action in the form of releasing pressure on the braking circuit, when a rapid deceleration occurs in any of the wheels to ensure steering and vehicular control is maintained during heavy or emergency braking. This has its disadvantages though, as different amounts of braking pressure are required to lock a rotating wheel on different surfaces.

Effect of EBD
EBD Operation 
How does it works?
here is an example to explain how EBD work, less braking pressure would be needed to lock a wheel which was in contact with ice than a wheel which was in contact with an asphalt road.

 In a situation where the wheels of a vehicle are on different surfaces (for example the two left wheels are on a concrete road and the two right wheels were on snow), during an emergency stop ABS would detect the two right wheels about to lock and would activate, even though the two left wheels would not have locked when the right wheels did.

 EBD detects such conditions and electronically controls the braking force applied to each individual wheel, and therefore maximizes the braking force to ensure a maximum braking effectiveness. The final result is more precise and effective braking under all conditions, and also makes the car much more stable under heavy braking, reducing front end dive

Press to Watch Brake System Video 1

Press to Watch Brake System Video 2
Press to Watch Brake System Video 3

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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Brake System: 2- ESC (Electronic Stability Control)

Posted by Wael A. Saad On 1 comments

2- ESC (Electronic Stability Control)
What is ESC or ESP?
 Electronic Stability Control (ESC) is a computerized system designed to improve a vehicle's handling by detecting and preventing skids, helping the driver maintain control of the vehicle.

Note: (ESP always needs ABS system, where the ABS plays as an Actuator while the ESC playing as the controller) . Read about ABS
 ESC simplifies steering for the driver. ESC uses the vehicle's braking system as a tool for "steering" the vehicle back on track. Braking is automatically applied to individual wheels, such as the inner rear wheel to counter under steer, or the outer front wheel to counter over steer. Some ESC systems also intervene by reducing engine power or accelerating the driven wheels.
ESC components 

One step beyond ABS is modern ESC systems. Here, two more sensors are added to help the system work. These are a steering wheel angle sensor, and a gyroscopic sensor.

The theory of operation is simple: when the gyroscopic sensor detects that the direction taken by the car doesn't agree with what the steering wheel sensor says, the ESC software will brake the necessary wheel(s) (up to three with the most sophisticated systems) so that the car goes the way the driver intends.

The wheel sensor also helps in the operation, since this will tell the ABS that wheels on the outside of the curve should brake more than wheels on the inside, and by how much.

 How does it work?
ESC compares the driver's intended direction (by measuring steering angle) to the vehicle's actual direction (by measuring lateral acceleration, vehicle rotation (yaw) and individual wheel speeds). If the vehicle is not going where the driver is steering, ESC then brakes individual front or rear wheels and/or reduces excess engine power (not all systems can reduce engine power) as needed to help correct under-steer (plowing) or over-steer (fishtailing).
Effect of ESC by using ABS system
ESC incorporates yaw angle control into anti-lock brakes. Yaw is rotation around the vertical axis; i.e. spinning left or right. Anti-lock brakes enable ESC to brake individual wheels.

ESC may also incorporate traction control, which senses drive-wheel slip under acceleration and individually brakes the slipping wheel or wheels and/or reduces excess engine power until control is regained.
ESC cannot override a car's physical limits or increase traction. If a driver pushes the vehicle's traction beyond its limits, ESC cannot prevent a crash. It is a tool to help the driver maintain control using available traction.


Press to Watch Brake System Video 1

Press to Watch Brake System Video 2
Press to Watch Brake System Video 3

Read About ABS : Press Here
Read About ESP : Press Here
Read About ESC : Press Here
Read About EBD: Press Here
Read About LSD: Press Here
Read About BAS: Press Here

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