Hy-Wire Car
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
computer science crazy
Super Moderator
******

Posts: 3,048
Joined: Dec 2008
#1
20-09-2008, 10:58 PM


Hy-Wire Car is without mechanical and hydraulic linkage end engine. Instead of these it contain a fuel cell stack and a drive by wire system. It is fully automated car it is a future car. In future it will have a wide application. The problem with fuel consumption and pollution can be minimize to certain level. In this article, we'll look at one interesting vision of the future, General Motor's remarkable concept car, the Hy-wire. GM may never actually sell the Hy-wire to the public, but it is certainly a good illustration of various ways cars might evolve in the near future. By using Hy-Wire technology certain multi national companies like General Motors is fully intended to release a production version of the car in 2010, assuming it can resolve the major fuel and safety issues. The life on the high way will see some major changes within the next few decades..
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply
summer project pal
Active In SP
**

Posts: 308
Joined: Jan 2011
#2
09-01-2011, 11:52 PM

ABSTRACT

Hy-Wire Car is without mechanical and hydraulic linkage end engine. Instead of these it contain a fuel cell stack and a drive by wire system. It is fully automated car it is a future car. In future it will have a wide application. The problem with fuel consumption and pollution can be minimize to certain level.
Hy in Hy –wire stands for hydrogen,used as a standard fuel for a fuel cell system. There is no steering wheel ,there is no pedal,there is no engine under the hood.Hy wire car genereate electricity from an chemical reaction.
Hydrogen used as a standard fuel and is stored in three cylindrical tanks.Hy wire seats and windows like a conventional car. To steer the car, you glide the grips up and down lightly -- you don't have to keep rotating a wheel to turn, you just have to hold the grip in the turning position.

Hy-wire has a huge front windshield, which gives everybody a clear view of the road. The floor of the fiberglass-and-steel passenger compartment can be totally flat, and it's easy to give every seat lots of leg room. Main advantage of Hy wire car is safety.we can assume,it can resolve some major fuel and safety issues.

.doc   Hy-Wire Car.doc (Size: 4.87 MB / Downloads: 525)
passwordConfusedeminar and presentationproject and implimentations
Chapter 1
INTRODUCTION



Fig 1.GM's sedan model Hy-wire
Hy-wire is a descendant of the GM Autonomy released at the 2002 North American International Autoshow. The Autonomy is a car which combines a hydrogen fuel cell with drive by wire technology. These technologies in combination allow all the mechanicals of the car to reside as a separate component to the body and passenger space.

The absence of a direct connection between the steering & pedals is possible with by-wire technology. Instead of mechanical connections to the chassis, the driver input is sent striaght actuates the neccessary component. With this setup, there are no restraints in when designing the interior space as connections from the controls to the chassis are not made.
A single docking port provides the electrical connection bewteen the chassis and body. There are 10 pick-up points where the body mounts the chassis. Such few attachments provide maximum flexibility when designing a body.
The Hy-Wire is placed atop the same chassis as the one found on the Autonomy. With such a flexible chassis, GM was able to create the Hy-Wire in only eight months.to a computer which then

CHAPTER-2
DESIGN



Due to hydrogen fuel cell drive system used by the Hy-wire the conventional car layout has been revamped. Without the need for a conventional engine block and transmission system coupled to the steering column and pedals through mechanical linkage the cars power system and single electric motor are built into a flat skateboard configuration. This serves to lower the car's center of gravity but more importantly to standardize vehicle drive train systems. Because all propulsion and energy storage systems are housed in the skateboard designers are free to arrange the passenger compartment however they see fit. This allows for highly flexible vehicle configurations such as a 4 door sedan, mini van, or even a small bus to be placed on the same drive system, with the only difference being the shape of the cars upper body and the location of seats. The skateboard itself contains crumple zones similar to those in conventional automobiles.

Fig 3.Hy Wire car lay out.




Many scientists are inventing ways to use fuel cells to power things that we use every day, like computers and refrigerators. Fuel cells can power a car the same way they power a light bulb.
GM has built several cars that run on fuel cells. The coolest and most unusual is called the Hy-wire, a name chosen by kids. The Hy-wire looks very different than the car that your parents might drive. There is no dashboard, no engine and no steering wheel. That’s because a stack of fuel cells takes up less space than the engines that are in cars today




Fig 4. AUTONOMY CONCEPT

Skateboard' chassis concept demonstrated in the AUTONOMY
CONCEPT at the 2002 North American Interational Auto Show



Fig 5 .side and frient view.



The X-drive, which allows steering, braking and other vehicle systems to be controlled electronically rather than mechanically, provides greater freedom for the driver. Drivers now have the option to brake and accelerate with either the right or left hand. The driver accelerates by gently twisting either the right or left handgrip, and brakes by squeezing the brake actuator also located on the handgrips. The handgrips glide up and down for steering.

The X-drive, which also incorporates an electronic monitor for vital car functions, shuttles easily from side-to-side on a horizontal bar that stretches across the full width of the vehicle. It provides another example of the extreme flexibility of the car's architecture.

A single docking port provides the electrical connection between the all-aluminum chassis and the fiberglass body. Mechanically, there are 10 body attachment linkages.

Hy-wire weighs 1,900 kilograms (4,180 pounds) with 20-inch tires in front and 22-inch tires in the rear. Putting all technical elements into the chassis provides a low center of gravity, giving the architecture both a high safety and driving dynamics potential. Passive safety requirements will be fulfilled using impact-absorbing elements, so-called crash boxes, at a later stage of development.

"Most of the powertrain load has been evenly distributed between the front and rear of the chassis so there is a lower center of gravity for the whole vehicle, without sacrificing ground clearance

2.1DRIVER INTERFACE
The cars drive by wire system coupled with cameras instead of mirrors and multiple LCD displays for feedback to the driver allows the drivers seat to be located theoretically anywhere however most current designs still favor the driver in front of or beside the other passengers for maximum visibility. The digital coupling of the controls to the drive system means neither the drivers seat nor the steering and throttle controls be fixed in place with the 2003 concept model having a single control interface that can be operated from either the right or left front seats, the 2004 concept design places the two front seats on a rotating platform which allows the driver and passenger seats to be swapped or the driver to sit in front of the passenger for greater flexibility.


CHAPTER 3
HY-WIRE BASICS



Two basic elements largely dictate car design today: the internal combustion engine and mechanical and hydraulic linkages. If you've ever looked under the hood of a car, you know an internal combustion engine requires a lot of additional equipment to function correctly. No matter what else they do with a car, designers always have to make room for this equipment.

The same goes for mechanical and hydraulic linkages. The basic idea of this system is that the driver maneuvers the various actuators in the car (the wheels, brakes, etc.) more or less directly, by manipulating driving controls connected to those actuators by shafts, gears and hydraulics. In a rack-and-pinion steering system, for example, turning the steering wheel rotates a shaft connected to a pinion gear, which moves a rack gear connected to the car's front wheels. In addition to restricting how the car is built, the linkage concept also dictates how we drive: The steering wheel, pedal and gear-shift system were all designed around the linkage idea.

The defining characteristic of the Hy-wire (and its conceptual predecessor, the Autonomy) is that it doesn't have either of these two things. Instead of an engine, it has a fuel cell stack, which powers an electric motor connected to the wheels. Instead of mechanical and hydraulic linkages, it has a drive by wire system -- a computer actually operates the components that move the wheels, activate the brakes and so on, based on input from an electronic controller. This is the same control system employed in modern fighter jets as well as many commercial planes.

The result of these two substitutions is a very different type of car -- and a very different driving experience. There is no steering wheel, there are no pedals and there is no engine compartment. In fact, every piece of equipment that actually moves the car along the road is housed in an 11-inch-thick (28 cm) aluminum chassis -- also known as the skateboard -- at the base of the car. Everything above the chassis is dedicated solely to driver control and passenger comfort.

This means the driver and passengers don't have to sit behind a mass of machinery. Instead, the Hy-wire has a huge front windshield, which gives everybody a clear view of the road. The floor of the fiberglass-and-steel passenger compartment can be totally flat, and it's easy to give every seat lots of leg room. Concentrating the bulk of the vehicle in the bottom section of the car also improves safety because it makes the car much less likely to tip over.

But the coolest thing about this design is that it lets you remove the entire passenger compartment and replace it with a different one. If you want to switch from a van to a sports car, you don't need an entirely new car; you just need a new body (which is a lot cheaper).

Fig 6 .Latest Hy wire car model.

fig 7.inside view
The Hy-wire has wheels, seats and windows like a conventional car, but the similarity pretty much ends there. There is no engine under the hood and no steering wheel or pedals inside.

Chapter 4
POWER


The "Hy" in Hy-wire stands for hydrogen, the standard fuel for a fuel cell system. Like batteries, fuel cells have a negatively charged terminal and a positively charged terminal that propel electrical charge through a circuit connected to each end. They are also similar to batteries in that they generate electricity from a chemical reaction. But unlike a battery, you can continually recharge a fuel cell by adding chemical fuel -- in this case, hydrogen from an onboard storage tank and oxygen from the atmosphere.

The basic idea is to use a catalyst to split a hydrogen molecule (H2) into two H protons (H+, positively charged single hydrogen atoms) and two electrons (e-). Oxygen on the cathode (positively charged) side of the fuel cell draws H+ ions from the anode side through a proton exchange membrane, but blocks the flow of electrons. The electrons (which have a negative charge) are attracted to the protons (which have a positive charge) on the other side of the membrane, but they have to move through the electrical circuit to get there. The moving electrons make up the electrical current that powers the various loads in the circuit, such as motors and the computer system. On the cathode side of the cell, the hydrogen, oxygen and free electrons combine to form water (H2O), the system's only emission product.



FIG 8 .Fuel cell stack
In a hydrogen fuel cell, a catalyst breaks hydrogen molecules in the anode into protons and electrons. The protons move through the exchange membrane, toward the oxygen on the cathode side, and the electrons make their way through a wire between the anode and cathode. On the cathode side, the hydrogen and oxygen combine to form water. Many cells are connected in series to move substantial charge through a circuit.

In a hydrogen fuel cell, a catalyst breaks hydrogen molecules in the anode into protons and electrons. The protons move through the exchange membrane, toward the oxygen on the cathode side, and the electrons make their way through a wire between the anode and cathode. On the cathode side, the hydrogen and oxygen combine to form water. Many cells are connected in series to move substantial charge through a circuit.

One fuel cell only puts out a little bit of power, so you need to combine many cells into a stack to get much use out of the process. The fuel-cell stack in the Hy-wire is made up of 200 individual cells connected in series, which collectively provide 94 kilowatts of continuous power and 129 kilowatts at peak power. The compact cell stack (it's about the size of a PC tower) is kept cool by a conventional radiator system that's powered by the fuel cells themselves.


Fig 9 .The hydrogen tanks and fuel-cell stack in the Hy-wire

This system delivers DC voltage ranging from 125 to 200 volts, depending on the load in the circuit. The motor controller boosts this up to 250 to 380 volts and converts it to AC current to drive the three-phase electric motor that rotates the wheels (this is similar to the system used in conventional electric cars).

The electric motor's job is to apply torque to the front wheel axle to spin the two front wheels. The control unit varies the speed of the car by increasing or decreasing the power applied to the motor. When the controller applies maximum power from the fuel-cell stack, the motor's rotor spins at 12,000 revolutions per minute, delivering a torque of 159 pound-feet. A single-stage planetary gear, with a ratio of 8.67:1, steps up the torque to apply a maximum of 1,375 pound-feet to each wheel. That's enough torque to move the 4,200-pound (1,905-kg) car 100 miles per hour (161 kph) on a level road. Smaller electric motors maneuver the wheels to steer the car, and electrically controlled brake calipers bring the car to a stop.

The gaseous hydrogen fuel needed to power this system is stored in three cylindrical tanks, weighing about 165 pounds (75 kilograms) total. The tanks are made of a special carbon composite material with the high structural strength needed to contain high-pressure hydrogen gas. The tanks in the current model hold about 4.5 pounds (2 kg) of hydrogen at about 5,000 pounds per square inch (350 bars). In future models, the Hy-wire engineers hope to increase the pressure threshold to 10,000 pounds per square inch (700 bars), which would boost the car's fuel capacity to extend the driving range.
Ultimately, GM hopes to get the fuel-cell stack, motors and hydrogen-storage tanks small enough that they can reduce the chassis thickness from 11 inches to 6 inches (15 cm). This more compact "skateboard" would allow for even more flexibility in the body design.


Fig 10.Body fitting on chasis.

Two major classes of problems must be solved before fuel cells succeed in passenger cars. The lesser of the two involves problems with the fuel cells themselves; they are short-lived and fragile and cannot tolerate subfreezing temperatures when not running. The other surrounds what are called "infrastructure" issues related to the manufacture and distribution of the hydrogen fuel that powers the cells. Here the solutions are not obvious. The hydrogen fuel must be produced, either by reforming natural gas or petroleum or by using electricity to break down water into hydrogen and oxygen. And then the hydrogen must be made available to drivers to power their cars. In the most likely scenario, some number of gas stations would have to be retrofitted to dispense hydrogen;


CHAPTER 5
CONTROL


The Hy-wire's "brain" is a central computer housed in the middle of the chassis. It sends electronic signals to the motor control unit to vary the speed, the steering mechanism to maneuver the car, and the braking system to slow the car down.

At the chassis level, the computer controls all aspects of driving and power use. But it takes its orders from a higher power -- namely, the driver in the car body. The computer connects to the body's electronics through a single universal docking port. This central port works the same basic way as a USB port on a personal computer: It transmits a constant stream of electronic command signals from the car controller to the central computer, as well as feedback signals from the computer to the controller. Additionally, it provides the electric power needed to operate all of the body's onboard electronics. Ten physical linkages lock the body to the chassis structure.

Fig 11.GM's diagram of the Autonomy design

The driver's control unit, dubbed the X-drive, is a lot closer to a video game controller than a conventional steering wheel and pedal arrangement. The controller has two ergonomic grips, positioned to the left and right of a small LCD monitor. To steer the car, you glide the grips up and down lightly -- you don't have to keep rotating a wheel to turn, you just have to hold the grip in the turning position. To accelerate, you turn either grip, in the same way you would turn the throttle on a motorcycle; and to brake, you squeeze either grip.

Electronic motion sensors, similar to the ones in high-end computer joysticks, translate this motion into a digital signal the central computer can recognize. Buttons on the controller let you switch easily from neutral to drive to reverse, and a starter button turns the car on. Since absolutely everything is hand-controlled, you can do whatever you want with your feet (imagine sticking them in a massager during the drive to and from work every day).

Fig 12.The Hy-wire's X-drive


Fig 13.The X-drive can slide to either side of the vehicle
The 5.8-inch (14.7-cm) color monitor in the center of the controller displays all the stuff you'd normally find on the dashboard (speed, mileage, fuel level). It also gives you rear-view images from video cameras on the sides and back of the car, in place of conventional mirrors. A second monitor, on a console beside the driver, shows you stereo, climate control and navigation information.

Since it doesn't directly drive any part of the car, the X-drive could really go anywhere in the passenger compartment. In the current Hy-wire sedan model, the X-drive swings around to either of the front two seats, so you can switch drivers without even getting up. It's also easy to adjust the X-drive up or down to improve driver comfort, or to move it out of the way completely when you're not driving.

One of the coolest things about the drive-by-wire system is that you can fine-tune vehicle handling without changing anything in the car's mechanical components -- all it takes to adjust the steering, accelerator or brake sensitivity is some new computer software. In future drive-by-wire vehicles, you will most likely be able to configure the controls exactly to your liking by pressing a few buttons, just like you might adjust the seat position in a car today. It would also be possible in this sort of system to store distinct control preferences for each driver in the family.



Fig 15.GM concept of the Autonomy without and with a body attached

The big concern with drive-by-wire vehicles is safety. Since there is no physical connection between the driver and the car's mechanical elements, an electrical failure would mean total loss of control. In order to make this sort of system viable in the real world, drive-by-wire cars will need back-up power supplies and redundant electronic linkages. With adequate safety measures like this, there's no reason why drive-by-wire cars would be any more dangerous than conventional cars. In fact, a lot of designers think they'll be much safer, because the central computer will be able to monitor driver input. Another problem is adding adequate crash protection to the car.

The other major hurdle for this type of car is figuring out energy-efficient methods for producing, transporting and storing hydrogen for the onboard fuel-cell stacks. With the current state of technology, actually producing the hydrogen fuel can generate about as much pollution as using gasoline engines, and storage and distribution systems still have a long way to go (see How the Hydrogen Economy Works for more information).

So will we ever get the chance to buy a Hy-wire? General Motors says it fully intends to release a production version of the car in 2010, assuming it can resolve the major fuel and safety issues. But even if the Hy-wire team doesn't meet this goal, GM and other automakers are definitely planning to move beyond the conventional car sometime soon, toward a computerized, environmentally friendly alternative. In all likelihood, life on the highway will see some major changes within the next few decades.




SPECIFICATION

• Top speed: 100 miles per hour (161 kph)
• Weight: 4,185 pounds (1,898 kg)
• Chassis length: 14 feet, 3 inches (4.3 meters)
• Chassis width: 5 feet, 5.7 inches (1.67 meters)
• Chassis thickness: 11 inches (28 cm)
• Wheels: eight-spoke, light alloy wheels.
• Tires: 20-inch (51-cm) in front and 22-inch (56-cm) in back
• Fuel-cell power: 94 kilowatts continuous, 129 kilowatts peak
• Fuel-cell-stack voltage: 125 to 200 volts
• Motor: 250- to 380-volt three-phase asynchronous electric motor
• Crash protection: front and rear "crush zones" (or "crash boxes") to absorb impact energy
• Related GM patents in progress: 30
• GM team members involved in design: 500+




CHAPTER 6
CONCLUSION


By using Hy-Wire technology certain multi national companies like General Motors is fully intended to release a production version of the car in 2010, assuming it can resolve the major fuel and safety issues. The life on the high way will see some major changes within the next few decades.

CHAPTER 7
REFERENCES


• howstuffworks.com
• generalmoters.com
Reply
seminar paper
Active In SP
**

Posts: 6,455
Joined: Feb 2012
#3
29-03-2012, 11:13 AM

To get more information about the topic "the hy-wire car full report " please refer the link below
topicideashow-to-the-hy-wire-car-full-report

topicideashow-to-hy-wire-car-full-report

topicideashow-to-the-hy-wire-car

topicideashow-to-hy-wire-car
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  location driven car music player jaseelati 0 142 06-02-2015, 03:48 PM
Last Post: jaseelati
  car parking system ppt jaseelati 0 242 06-02-2015, 12:59 PM
Last Post: jaseelati
  Compressed air car seminar ideas 2 966 23-01-2015, 06:21 PM
Last Post: Guest
  powered by article dashboard car gps receiver jaseelati 0 357 10-01-2015, 01:38 PM
Last Post: jaseelati
  seminar report on driverless car jaseelati 0 234 18-12-2014, 03:44 PM
Last Post: jaseelati
  google driverless car seminar report jaseelati 0 262 11-12-2014, 01:17 PM
Last Post: jaseelati
  ppt on DRIVERLESS CAR study tips 3 2,372 24-03-2014, 04:21 PM
Last Post: seminar project topic
  CAR AERODYNAMICS REPORT seminar projects maker 0 479 25-09-2013, 01:00 PM
Last Post: seminar projects maker
  Electric car with Suspension Report study tips 0 376 13-08-2013, 02:36 PM
Last Post: study tips
  A Seminor report On AUTOMATED MULTI LEVEL CAR PARKING SYSTEM study tips 0 567 06-08-2013, 03:42 PM
Last Post: study tips