GM fuel cell vehicles to China Hy-wire
In early 2001 North American International Auto Show, GM introduced the self-Magic (AUTOMONY) concept cars so that the whole number of cars eclipsed, because it is a completely different exhibits, can not even call it “car.” It is only a skateboard-like chassis, the chassis in an integrated fuel cell power systems as well as all other control systems. Wire with the use of technology, the “skateboard” Let the steering wheel, pedal things have become redundant. As long as it is installed to a different “car shell”, the “skateboard” on either a sports car, as well as a station wagon, and even can be a vehicle.
At that time, our reporter to the complete subversion of the traditional concept of the autonomy of automotive concept car known as the magic is “the design of General Motors as the world’s a dream.” But soon, GM put this dream into reality, the world may be driving a wire fuel cell vehicle in the Hy-wire in September 2002 officially unveiled in Paris Motor Show. It was “Time Magazine” in 2002 awarded “Coolest Invention Award.” This to “H” as the energy carrier of the automobile, for General Motors to the “hydrogen economy” of the goal and laid a solid foundation. The car is now common to the Chinese to allow the Chinese public have the opportunity to work together and common, to share the joy of dreams come true.
Hy-wire for the Hydrogen and the by-wire compound words, which means hydrogen fuel drive – wire. Hy-wire model is a five-seater with four station wagon, its driver and control system installed in the chassis like skateboarding, so the crew inside the vehicle and their luggage to have the largest space. No motor vehicle, no need to operate the pedal, only one is called X-drive operation of the electronic control panel, conveniently placed in the car left or right side. The car’s fuel cell group installed in the rear of the chassis can produce 94 kilowatts of continuous power. Car interior decoration and style reflect the personality of the body needs.
New device wire system
“By-wire” wire technology is the core of the intelligent electro-mechanically actuated devices, these devices will be the driver’s instructions by the electronic signals into mechanical motion, the system also provides electronic signals to the drivers of dynamic feedback.
As a result of motor vehicle steering column and the steering wheel pedal-wire control system was installed to replace the driver can also be used with the right hand to left-handed manipulation of the moving vehicle.
When the car need to turn to when drivers can rotate the handle to control the device, the sensor will capture the action of the digital signal and then send a signal to the motor, its drive towards rack instructions. When accelerating, the driver is located just gently rotate the left or the right side of the handle; in the slowdown, then only the minimal amount of financial support in the same brake brake handle; handle to control the direction of sliding up and down.
In addition, drivers can choose the right or left sitting in the driver’s seat of the chair, as the drive control device installed in the console can be moved around on. Wire system also integrates with an electronic monitor may be the primary function of the implementation of vehicle monitoring. Monitor in a car-wide track width of the level of movement back and forth. As a result of by-wire system is used to connect and control electronics, so it simply insert the Hy-wire chassis on the dock-type interface.
Wire technology in automotive applications has the advantage of being, first, the steering wheel steering column and pedal after the car design for more space, simplifying the procedures for operating the vehicle; Second, save the mechanical and hydraulic connections devices, reduced body weight and simplified maintenance; Third, the by-wire system without the use of hydraulic fluid for steering and braking, making more environmentally friendly car; the fourth, as the vehicle through the driver software to determine the characteristics, such as brakes, turn and accelerate, driving the launch of a new adjustment process as easy as simple.
Distinctive chassis combination
Hy-wire chassis for the main part of the thickness of 11 inches, on both sides along the direction of decreasing thickness, the brink of the Department reduced to seven inches. The car’s fuel cell group installed in the rear of the chassis through its traditional cooling radiator. Fuel cell stack size and the chassis is similar to personal computers, from a total of 200 series of fuel cell components. The fuel cell stack 129 kilowatts at peak power of the state continued to generate 94 kilowatts of electricity. This environmentally-friendly generator in accordance with the load can provide between 125 and 200 volt DC voltage. The inverter voltage can be increased to 250 ~ 380 V, and then converted into alternating current to drive motor (Hy-wire control system of the wire voltage of 42 volts to work). Online Communication under control devices, fuel cells can be made fully dynamic response; therefore no need to use batteries to provide additional capacity for peak power. Three can withstand the pressure of 350 Palestinian cylindrical hydrogen storage tank has been fixed in the horizontal central skateboard chassis, weighs just 75 kilograms, can store two kilograms of gaseous hydrogen. Fuel cell from the hydrogen storage tank to provide access to electricity. GM’s next goal is to pressure vessel 350 from the existing 700 bus to Pakistan in order to ensure the largest fuel cell vehicle to achieve 500 km trip. Due to the vast majority of power system load has been evenly distributed in the chassis between the front and rear end, the overall vehicle center of gravity has been lowered. Because of this, cars have been given better control performance, and the maximum increase in body height at the same time still ensure good anti-roll performance, which greatly improved the overall safety of vehicles.
Innovative car design
Hy-wire vehicle weight of 1,900 kilograms, the use of 20-inch front tires, rear tires 22 inches used. Aluminum in the chassis and between the glass fiber body, through the universal docking interface to achieve electrical connection. Mechanical connection between the two cars who rely on at the 10 connector, it can be easily demolished. The car with cameras instead of rear-view mirror, headlights and tail lights of the LED technology is used, so the lights can be installed in a small space.汪云青
Hy-wire concept car specifications parameter table
Vehicle fuel cell and wire technology, front-wheel-drive luxury cars
Number of 5 passengers
Fuel storage system composed of carbon composite materials in three cylindrical pressure vessel
Fuel cell stack 200 independent fuel cell
Series voltage 125-200 volts
Continuous power 94 kilowatts, 129 kilowatts of peak
Power density of 1.60 kilowatts / L, 0.94 kilowatts / kg
Electronic traction system with integrated power electronics and planetary gear of the three-phase asynchronous motor
Operating voltage 250-380 V
Torque 215 Nm
Maximum speed of 12000rpm
Transmission ratio 8.67:1
Skateboard chassis aluminum frame
Length / width / height 4357/1670/2790 mm
Body weight of steel and glass fiber, 1.9 thousand kilograms
Body length of 5 meters
Wheelbase 3114 millimeters
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