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Electronic Differential
In automotive engineering the electronic differential is a form of differential, which provides the required torque for each driving wheel and allows different wheel speeds. It is used in place of the mechanical differential in multi-drive systems. When cornering, the inner and outer wheels rotate at different speeds, because the inner wheels describe a smaller turning radius. The electronic differential uses the steering wheel command signal and the motor speed signals to control the power to each wheel so that all wheels are supplied with the torque they need. Functional description The classical automobile drivetrain is composed by a single Internal combustion engine providing torque to one or more driving wheels. The most common solution is to use a mechanical device to distribute torque to the wheels. This mechanical differential allows different wheel speeds when cornering. With the emergence of electric vehicles new drive train configurations are possible. Multi-drive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automotive Engineering
Automotive engineering, along with aerospace engineering and naval architecture, is a branch of vehicle engineering, incorporating elements of mechanical, electrical, electronic, software, and safety engineering as applied to the design, manufacture and operation of motorcycles, automobiles, and trucks and their respective engineering subsystems. It also includes modification of vehicles. Manufacturing domain deals with the creation and assembling the whole parts of automobiles is also included in it. The automotive engineering field is research intensive and involves direct application of mathematical models and formulas. The study of automotive engineering is to design, develop, fabricate, and test vehicles or vehicle components from the concept stage to production stage. Production, development, and manufacturing are the three major functions in this field. Disciplines Automobile engineering Automobile engineering is a branch study of engineering which teaches manufacturing, de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stability Control
Electronic stability control (ESC), also referred to as electronic stability program (ESP) or dynamic stability control (DSC), is a computerized technology that improves a car handling, vehicle's stability by detecting and reducing loss of Traction (engineering), traction (skid (automobile), skidding). When ESC detects loss of steering control, it automatically applies the brakes to help steer the vehicle where the driver intends to go. Braking is automatically applied to wheels individually, such as the outer front wheel to counter oversteer, or the inner rear wheel to counter understeer. Some ESC systems also reduce engine power until control is regained. ESC does not improve a vehicle's cornering performance; instead, it helps reduce the chance of the driver losing control of the vehicle. According to the U.S. National Highway Traffic Safety Administration and the Insurance Institute for Highway Safety in 2004 and 2006 respectively, one-third of fatal accidents could be preven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
System On Chip
A system on a chip or system-on-chip (SoC ; pl. ''SoCs'' ) is an integrated circuit that integrates most or all components of a computer or other electronic system. These components almost always include a central processing unit (CPU), memory interfaces, on-chip input/output devices, input/output interfaces, and secondary storage interfaces, often alongside other components such as radio modems and a graphics processing unit (GPU) – all on a single substrate or microchip. It may contain digital, analog, mixed-signal, and often radio frequency signal processing functions (otherwise it is considered only an application processor). Higher-performance SoCs are often paired with dedicated and physically separate memory and secondary storage (such as LPDDR and Universal Flash Storage, eUFS or eMMC, respectively) chips, that may be layered on top of the SoC in what's known as a package on package (PoP) configuration, or be placed close to the SoC. Additionally, SoCs may use s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tire Wear
A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, which also provide a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, that is designed to match the weight of the vehicle with the bearing strength of the surface that it rolls over by providing a bearing pressure that will not deform the surface excessively. The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric, and wire, along with carbon black and other chemical compounds. They consist of a tread and a body. The tread provides traction while the body provides containment for a quantity of compressed air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truck
A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction, with a cabin that is independent of the payload portion of the vehicle. Smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of refuse trucks, fire trucks, concrete mixers, and suction excavators. In American English, a commercial vehicle without a trailer or other articulation is formally a "straight truck" while one designed specifically to pull a trailer is not a truck but a "Tractor unit, tractor". The majority of trucks currently in use are still powered by diesel engines, although small- to medium-size trucks with gasoline engines exist in the US, Canada, and Mexico. The market-share of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liebherr
Liebherr is a German-Swiss multinational equipment manufacturer based in Bulle, Switzerland, with its main production facilities and origins in Germany. Liebherr consists of over 130 companies organized into 11 divisions: earthmoving, mining, mobile cranes, tower cranes, concrete technology, maritime cranes, aerospace and transportation systems, machine tools and automation systems, domestic appliances, and components. It has a worldwide workforce over 42,000, with nine billion euros in revenue for 2017. By 2007, it was the world's largest crane company. Established in 1949 by Hans Liebherr in Kirchdorf an der Iller, Baden-Württemberg, Germany, the business is still entirely owned by the Liebherr family. Isolde and Willi Liebherr, Hans' daughter and son, respectively, are the chief executive and chairman of the Bulle, Switzerland–based Liebherr-International AG, and several other family members are actively involved in corporate management. In 2005, ''Forbes'' magazine li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liebherr T 282B
The Liebherr T 282 series are off-highway, ultra class, rigid frame, two axle, diesel-electric, AC powertrain haul trucks designed and manufactured in the United States by Liebherr Mining Equipment Co. The Liebherr T 282 series is no longer in production, however, due to the extended service life of this equipment, many are still in operation on mines around the world. The T 282 series is succeeded by the Liebherr T 284. T 282 The 1998 T 282 offers a payload of up to and was built specifically for high-production mining applications worldwide. The T 282 was succeeded by the T 282 B, designed in Newport News, Virginia with a payload capacity. Development and testing Liebherr developed a payload capacity haul truck for large-scale mining operations. Engineers at Liebherr Mining Equipment Newport News Co. designed the T 282 to have the lightest Empty Vehicle Weight (EVW) respective to its payload capacity. The T 282 was the first mining haul truck designed by Liebherr fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eliica
The Eliica (or the Electric Lithium-Ion Car) is a battery electric vehicle prototype or concept car first shown in 2004 and designed by a team at Keio University in Tokyo, led by Professor Hiroshi Shimizu. The car runs on a lithium-ion battery and can accelerate from 0– in four seconds (faster than the Porsche 911 Turbo at the time). In 2004, the Eliica reached a speed of on Italy's Nardò High Speed Track. The team's goal is to exceed , breaking the record set by today's street-legal gasoline-powered vehicles. Shimizu's new project is called "SIM-Drive" (シムドライブ), with wheel hub motors. KAZ The Eliica is a refinement of the earlier KAZ (Keio Advanced Zero-emission vehicle), a limousine-sized 8-wheel 8-person electric vehicle prototype of 2003 that also set speed records. Design details The Eliica weighs and seats the driver and three passengers. The body was tested in a wind tunnel. The front doors open forward and the rear doors open upward like gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liebherr T282
Liebherr is a German-Swiss multinational equipment manufacturer based in Bulle, Switzerland, with its main production facilities and origins in Germany. Liebherr consists of over 130 companies organized into 11 divisions: earthmoving, mining, mobile cranes, tower cranes, concrete technology, maritime cranes, aerospace and transportation systems, machine tools and automation systems, domestic appliances, and components. It has a worldwide workforce over 42,000, with nine billion euros in revenue for 2017. By 2007, it was the world's largest crane company. Established in 1949 by Hans Liebherr in Kirchdorf an der Iller, Baden-Württemberg, Germany, the business is still entirely owned by the Liebherr family. Isolde and Willi Liebherr, Hans' daughter and son, respectively, are the chief executive and chairman of the Bulle, Switzerland–based Liebherr-International AG, and several other family members are actively involved in corporate management. In 2005, ''Forbes'' magazine li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regenerative Braking
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, the electric traction motor uses the vehicle's momentum to recover energy that would otherwise be lost to the brake discs as heat. This method contrasts with conventional braking systems. In those systems, the excess kinetic energy is converted to unwanted and wasted heat due to friction in the brakes, or with rheostatic brakes, where the energy is recovered by using electric motors as generators but is immediately dissipated as heat in resistors. In addition to improving the overall efficiency of the vehicle, regeneration can significantly extend the life of the braking system as the mechanical parts will not wear out quickly. General principle The most common form of regenerative brake involves an electric motor functioning as an electric generator. In elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction Control System
A traction control system (TCS), also known as ASR (from german: Antriebsschlupfregelung, lit=drive slippage regulation), is typically (but not necessarily) a secondary function of the electronic stability control (ESC) on production motor vehicles, designed to prevent loss of traction (i.e., wheelspin) of the driven road wheels. TCS is activated when throttle input and engine power and torque transfer are mismatched to the road surface conditions. The intervention consists of one or more of the following: *Brake force applied to one or more wheels *Reduction or suppression of spark sequence to one or more cylinders *Reduction of fuel supply to one or more cylinders *Closing the throttle, if the vehicle is fitted with drive by wire throttle *In turbocharged vehicles, a boost control solenoid is actuated to reduce boost and therefore engine power. Typically, traction control systems share the electrohydraulic brake actuator (which does not use the conventional master cylinder and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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